PENTEGRA DENTAL GROUP INC
S-1, 1997-10-10
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<PAGE>
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON OCTOBER 10, 1997
 
                                                      REGISTRATION NO. 333-
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
                                    FORM S-1
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
                          PENTEGRA DENTAL GROUP, INC.
 
             (Exact name of registrant as specified in its charter)
 
<TABLE>
<S>                              <C>                            <C>
           DELAWARE                          8021                  76-0545043
 (State or other jurisdiction    (Primary Standard Industrial   (I.R.S. Employer
              of                 Classification Code Number)     Identification
incorporation or organization)                                      Number)
</TABLE>
 
                           --------------------------
 
<TABLE>
<S>                                       <C>
     PENTEGRA DENTAL GROUP, INC.                     GARY S. GLATTER
   2999 NORTH 44TH STREET, STE. 650          2999 NORTH 44TH STREET, STE. 650
        PHOENIX, ARIZONA 85018                    PHOENIX, ARIZONA 85018
            (602) 952-1200                            (602) 952-1200
  (Address, including zip code, and       (Name and address, including zip code,
telephone number, including area code,     and telephone number, including area
 of registrant's principal executive           code, of agent for service)
               offices)
</TABLE>
 
                           --------------------------
 
                                   COPIES TO:
 
<TABLE>
<S>                                       <C>
           RICHARD S. ROTH                             TED W. PARIS
        JACKSON WALKER L.L.P.                     BAKER & BOTTS, L.L.P.
            1100 LOUISIANA                            910 LOUISIANA
              SUITE 4200                                SUITE 3000
         HOUSTON, TEXAS 77002                      HOUSTON, TEXAS 77002
</TABLE>
 
                           --------------------------
 
        APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:
  AS SOON AS PRACTICABLE AFTER THIS REGISTRATION STATEMENT BECOMES EFFECTIVE.
                           --------------------------
 
    If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act,
check the following box. / /
 
    If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box and
list the Securities Act registration statement number of the earlier effective
registration statement for the same offering. / /
 
    If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. / /
 
    If this Form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities Act
registration number of the earlier effective registration statement for the same
offering. / /
 
    If delivery of the prospectus is expected to be made pursuant to Rule 434,
check the following box. / /
                           --------------------------
 
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<CAPTION>
                                                                                      PROPOSED MAXIMUM
                                                                 PROPOSED MAXIMUM         AGGREGATE
         TITLE OF EACH CLASS OF                 AMOUNT TO         OFFERING PRICE          OFFERING             AMOUNT OF
       SECURITIES TO BE REGISTERED          BE REGISTERED(1)       PER SHARE(1)         PRICE(2),(3)       REGISTRATION FEE
<S>                                        <C>                  <C>                  <C>                  <C>
Common Stock, $.001 par value............          --                   --               $40,250,000            $12,197
</TABLE>
 
(1) In accordance with Rule 457(o) under the Securities Act of 1933, as amended,
    the number of shares being registered and the proposed maximum offering
    price per share are not included in this table.
 
(2) Includes shares of Common Stock issuable upon exercise of the Underwriters'
    over-allotment option.
 
(3) Estimated solely for purposes of calculating the registration fee.
                           --------------------------
 
    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
Information contained herein is subject to completion or amendment. A
registration statement relating to these securities has been filed with the
Securities and Exchange Commission. These securities may not be sold nor may
offers to buy be accepted prior to the time the registration statement becomes
effective. This prospectus shall not constitute an offer to sell or the
solicitation of an offer to buy nor shall there be any sale of these securities
in any State in which such offer, solicitation or sale would be unlawful prior
to registration or qualification under the securities laws of any such State.
<PAGE>
                 Subject To Completion, Dated October 10, 1997
 
PROSPECTUS
 
                                2,500,000 SHARES
 
                          PENTEGRA DENTAL GROUP, INC.
 
                                  COMMON STOCK
                                ----------------
 
    All of the shares of Common Stock, par value $.001 per share ("Common
Stock"), offered hereby (the "Offering") are being offered by Pentegra Dental
Group, Inc. (the "Company"). Prior to the Offering, there has been no public
market for the Common Stock. It is currently estimated that the initial public
offering price will be between $     and $     per share. See "Underwriting" for
a discussion of the factors to be considered in determining the initial public
offering price. The Company has applied to have the Common Stock approved for
quotation on the Nasdaq National Market under the symbol "PDGI."
 
                             ---------------------
 
    THE SHARES OF COMMON STOCK OFFERED HEREBY INVOLVE A HIGH DEGREE OF RISK.
                    SEE "RISK FACTORS" BEGINNING ON PAGE 7.
 
                             ---------------------
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
   AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
      NOR HAS THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE
        SECURITIES COMMISSION PASSED UPON THE ACCURACY OR
             ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION
                       TO THE CONTRARY IS A CRIMINAL OFFENSE.
 
<TABLE>
<CAPTION>
                                                              Underwriting
                                                               Discounts
                                                    Price to      and     Proceeds to
                                                     Public   Commissions(1)  Company(2)
<S>                                               <C>         <C>         <C>
Per Share.........................................      $          $           $
Total(3)..........................................      $          $           $
</TABLE>
 
(1) The Company has agreed to indemnify the Underwriters against certain
    liabilities, including liabilities under the Securities Act of 1933, as
    amended (the "Securities Act"). See "Underwriting."
 
(2) Before deducting estimated expenses of $2,300,000, payable by the Company.
 
(3) The Company has granted the Underwriters a 30-day option to purchase up to
    375,000 additional shares of Common Stock on the same terms and conditions
    as set forth above, solely to cover over-allotments, if any. If such option
    is exercised in full, the total Price to Public, Underwriting Discounts and
    Commissions and Proceeds to Company will be $         , $       and
    $         , respectively. See "Underwriting."
 
                             ---------------------
 
    The shares of Common Stock offered by this Prospectus are offered by the
Underwriters, subject to prior sale, to withdrawal, cancellation or modification
of the offer without notice, to delivery to and acceptance by the Underwriters
and to certain further conditions. It is expected that delivery of certificates
representing the shares of Common Stock will be made at the offices of Lehman
Brothers Inc., New York, New York, on or about            , 1997.
 
                             ---------------------
 
LEHMAN BROTHERS                                    RAUSCHER PIERCE REFSNES, INC.
 
                                          , 1997
<PAGE>
                                     [MAP]
 
    CERTAIN PERSONS PARTICIPATING IN THE OFFERING MAY ENGAGE IN TRANSACTIONS
THAT STABILIZE, MAINTAIN OR OTHERWISE AFFECT THE PRICE OF THE COMMON STOCK. SUCH
TRANSACTIONS MAY INCLUDE THE PURCHASE OF SHARES OF COMMON STOCK FOLLOWING THE
PRICING OF THE OFFERING TO COVER A SYNDICATE SHORT POSITION IN THE COMMON STOCK
OR FOR THE PURPOSE OF MAINTAINING THE PRICE OF THE COMMON STOCK, AND THE
IMPOSITION OF PENALTY BIDS. FOR A DESCRIPTION OF THESE ACTIVITIES, SEE
"UNDERWRITING."
 
                                       2
<PAGE>
                               PROSPECTUS SUMMARY
 
    PENTEGRA DENTAL GROUP, INC. ("PENTEGRA" OR THE "COMPANY") WAS RECENTLY
FORMED TO SERVE, UPON COMPLETION OF THE OFFERING, AS THE PARENT CORPORATION OF
PENTEGRA INVESTMENTS, INC. ("PII"). CONCURRENTLY WITH THE CLOSING OF THE
OFFERING, (I) THE COMPANY WILL ACQUIRE, IN SEPARATE TRANSACTIONS (THE
"ACQUISITIONS"), SUBSTANTIALLY ALL THE TANGIBLE AND INTANGIBLE ASSETS, AND
ASSUME CERTAIN LIABILITIES, OF 51 DENTAL PRACTICES (COLLECTIVELY, THE "FOUNDING
AFFILIATED PRACTICES") IN EXCHANGE FOR CASH AND SHARES OF COMMON STOCK, (II) THE
HOLDERS OF COMMON STOCK OF PII WILL EXCHANGE THEIR SHARES FOR SHARES OF COMMON
STOCK ON A ONE-FOR-ONE BASIS (THE "SHARE EXCHANGE"), (III) THE COMPANY WILL
ACQUIRE (THE "PENTEGRA/NAPILI TRANSACTION") SUBSTANTIALLY ALL OF THE ASSETS OF
TWO COMPANIES CONTROLLED BY THE COMPANY'S CHAIRMAN OF THE BOARD, PENTEGRA, LTD.
AND NAPILI, INTERNATIONAL ("NAPILI") AND (IV) PII WILL REPURCHASE 245,835 SHARES
OF ITS CLASS B PREFERRED STOCK, PAR VALUE $0.01 PER SHARE ("CLASS B PREFERRED"),
AT THE SUBSCRIPTION PRICE PER SHARE PAID TO PII FOR THOSE SHARES AND,
IMMEDIATELY THEREAFTER, REDEEM ALL OF THE REMAINING SHARES OF ITS CLASS A
PREFERRED STOCK, PAR VALUE $0.01 PER SHARE ("CLASS A PREFERRED") AND CLASS B
PREFERRED AT A REDEMPTION PRICE OF $2.00 PER SHARE (THE "REPURCHASE AND
REDEMPTION"). THE NUMBER OF SHARES OF COMMON STOCK TO BE ISSUED IN EACH
ACQUISITION WILL DEPEND ON THE INITIAL PUBLIC OFFERING PRICE OF THE COMMON
STOCK. ACCORDINGLY, THE DISCLOSURES HEREIN RELATING TO THE SHARES OF COMMON
STOCK ISSUED IN CONNECTION WITH THE ACQUISITIONS ARE ESTIMATED, BASED ON AN
ASSUMED INITIAL PUBLIC OFFERING PRICE OF $    PER SHARE (THE MIDPOINT OF THE
ESTIMATED INITIAL PUBLIC OFFERING PRICE RANGE). UNLESS OTHERWISE INDICATED BY
THE CONTEXT, REFERENCES HEREIN TO (I) "PENTEGRA" OR THE "COMPANY" INCLUDE
PENTEGRA DENTAL GROUP, INC., PII, PENTEGRA, LTD. AND NAPILI AND (II) "AFFILIATED
PRACTICES" MEAN THE FOUNDING AFFILIATED PRACTICES AND ANY DENTAL PRACTICES WITH
WHICH THE COMPANY MAY ENTER INTO SIMILAR RELATIONSHIPS IN THE FUTURE. UNLESS
OTHERWISE INDICATED, THE INFORMATION IN THIS PROSPECTUS (I) GIVES EFFECT TO A
REVERSE STOCK SPLIT OF THE OUTSTANDING SHARES OF COMMON STOCK OF PII AND (II)
ASSUMES THE UNDERWRITERS' OVER-ALLOTMENT OPTION IS NOT EXERCISED. THE FOLLOWING
SUMMARY IS QUALIFIED IN ITS ENTIRETY BY THE MORE DETAILED INFORMATION AND
FINANCIAL STATEMENTS, INCLUDING THE NOTES THERETO, APPEARING ELSEWHERE IN THIS
PROSPECTUS.
 
                                  THE COMPANY
 
    Pentegra Dental Group, Inc. was recently formed to provide management,
administrative, development and other services to dental practices throughout
the United States. The Company's approach to dental practice management (the
"Pentegra Dental Program") was developed by Dr. Omer K. Reed, the Chairman of
the Board of the Company, and is designed to increase revenues and lower costs
at Affiliated Practices while freeing the practicing dentists to focus on the
delivery of high-quality care. The Company will earn management service fees
under long-term service agreements with Affiliated Practices (the "Service
Agreements"). In most cases, service fees payable to the Company under the
Service Agreements represent a share of the Affiliated Practices' operating
profits, thereby providing incentives for the Company and the Affiliated
Practices to work together to maximize practice profitability. The Company will
also seek to grow by acquiring and affiliating with additional dental practices.
 
    The Company has entered into definitive acquisition agreements and Service
Agreements with 51 Founding Affiliated Practices, which include 78 dentists and
63 dental offices located in 18 states. The Founding Affiliated Practices are
primarily general dentistry practices, but also include specialists such as
periodontists, pedodontists and oral surgeons. For the year ended December 31,
1996, total patient revenue for the Founding Affiliated Practices was
approximately $39.2 million and pro forma revenue for the Company would have
been approximately $27.1 million. In addition, the Company will acquire from Dr.
Reed the assets of a consulting firm, Pentegra, Ltd., which was founded in 1988,
and a seminar company, Napili, which was founded in 1963. The clinical,
administrative and marketing training developed and provided by these companies
to practicing dentists and their teams are the foundation for the Pentegra
Dental Program. After completion of the Offering, the Pentegra Dental Program
will be available exclusively to Affiliated Practices.
 
    The Health Care Finance Administration ("HCFA") estimates that in 1995
approximately $43 billion was spent in the United States on dental services, and
projects annual dental expenditures will reach $79
 
                                       3
<PAGE>
billion in the year 2005. In a 1995 survey, the American Dental Association
("ADA") reported that there were approximately 153,000 active dentists in the
United States, approximately 88% of whom were practicing either alone or with
only one other dentist. In recent years, dentists have begun to consolidate into
affiliated groups and with practice management companies. Dentists who affiliate
with practice management companies gain several benefits, such as opportunities
to achieve economies of scale, to implement cost management techniques and to
gain access to capital for new equipment and other working capital needs.
 
    The Company's objective is to become a leader in providing dental practice
management services. In order to achieve this objective, the Company's strategy
includes the following elements:
 
    - FOCUS ON TRADITIONAL FEE-FOR-SERVICE DENTAL CARE. According to the 1993
      Foster Higgins National Survey of Employer-Sponsored Health Plans,
      approximately 78% of the plans surveyed pay for dental services on a
      fee-for-service basis. The Company believes that fee-for-service care is
      high-quality, highly profitable and professionally rewarding for dentists.
 
    - INCREASE PRODUCTIVITY AND PROFITABILITY OF AFFILIATED PRACTICES BY
      IMPLEMENTING THE PENTEGRA DENTAL PROGRAM. The Pentegra Dental Program
      involves proven techniques to increase revenues and lower costs, as well
      as methods to make the dentist and his or her practice team more efficient
      in the delivery of dental care.
 
    - LOWER OPERATING COSTS BY ACHIEVING ECONOMIES OF SCALE. The Company
      believes that, as a result of its size and resources, it will be able to
      provide Affiliated Practices with certain management functions at lower
      cost than if the Affiliated Practices were to perform the services by
      themselves.
 
    - FREE THE DENTIST TO FOCUS MORE TIME ON THE PRACTICE OF DENTISTRY. The
      Company will relieve practicing dentists of administrative tasks. The
      Company believes management and administrative support will substantially
      reduce the amount of time affiliated dentists are required to spend on
      administrative matters and enable them to dedicate more time and effort
      toward the growth of their professional practices.
 
    - GROW THROUGH ACQUISITIONS AND AFFILIATIONS OF ADDITIONAL DENTAL
      PRACTICES. The Company will generally seek to affiliate with practices
      that have high potential for future growth, particularly through
      implementation of the Pentegra Dental Program, an established reputation
      for high-quality care and a strategic fit either in an existing market or
      as an entry into a new market.
 
    The Pentegra Dental Program is based on a cooperative approach that
emphasizes patient wellness and involves the dentist and his or her patient
mutually agreeing on a program to achieve and maintain optimal oral health. The
Company believes that the average dentist has the skills necessary to diagnose
and provide appropriate care to patients, but many of them have not developed
the skills needed to obtain patient acceptances of, and commitments to, the
treatment plans. As a result, a significant amount of recommended care may not
be completed, with correspondingly lower revenues to the dentists. The Company
will provide training and support to assist affiliated dentists and their teams
to communicate effectively with each patient regarding the type and value of
care needed, to obtain the patient's commitment to a treatment plan and then to
implement the agreed-upon treatment. In order to promote operational efficiency
and assure quality of care at Affiliated Practices, the Company's information
systems will monitor patient treatment plans and track the number and type of
procedures performed by each practice. Additionally, the Company will provide
the Affiliated Practices with billing and collections, purchasing, inventory
management, invoice processing and payment, payroll processing, patient
scheduling and financial reporting and analysis.
 
                                       4
<PAGE>
                                  THE OFFERING
 
<TABLE>
<S>                                        <C>
Common Stock offered by the Company......  2,500,000 shares
Common Stock to be outstanding after the
  Offering...............................  6,319,178 shares(1)
Use of proceeds..........................  To fund the cash portion of the aggregate
                                           purchase price of the assets of the Founding
                                           Affiliated Practices, to fund the Pentegra/Napili
                                           Transaction, to repurchase or redeem the
                                           outstanding shares of preferred stock of PII, to
                                           repay certain indebtedness of Pentegra and the
                                           Founding Affiliated Practices and for general
                                           corporate purposes. See "Use of Proceeds."
Proposed Nasdaq National Market symbol...  PDGI
</TABLE>
 
- ---------
 
(1) Includes 2,062,511 shares of Common Stock to be issued in connection with
    the Acquisitions and excludes (i) an aggregate of 646,667 shares of Common
    Stock issuable upon exercise of stock options to be granted under the
    Company's 1997 Stock Compensation Plan (the "1997 Stock Compensation Plan")
    effective on the date the Offering closes at an exercise price equal to the
    initial public offering price per share and (ii) 1,353,333 shares reserved
    for future issuance under the 1997 Stock Compensation Plan. See
    "Management--1997 Stock Compensation Plan." The number of shares to be
    outstanding on completion of the Offering will decrease if the initial
    public offering price is higher, and will increase if the initial public
    offering price is lower, than $    per share. For example, an aggregate of
            shares of Common Stock would be outstanding if that price is $
    per share, while an aggregate of         shares of Common Stock would be
    outstanding if that price is $    per share.
 
                                  RISK FACTORS
 
    The Common Stock offered hereby involves a high degree of risk. See "Risk
Factors."
 
                                       5
<PAGE>
                             SUMMARY FINANCIAL DATA
                      (IN THOUSANDS EXCEPT PER SHARE DATA)
 
    The following financial information is derived from the historical combined
financial statements of Pentegra, Ltd. and Napili (the "Combined Predecessor
Companies") and the historical financial statements and the notes thereto
included in this Prospectus. Except as indicated, this information does not
reflect the effects of the Offering, the Acquisitions, the Share Exchange, the
Pentegra/Napili Transaction and the Repurchase and Redemption. For certain
information concerning the Acquisitions, see Note 4 of Notes to the Pentegra
Dental Group, Inc. Financial Statements.
 
<TABLE>
<CAPTION>
                                                                                                   COMBINED PREDECESSOR
                                                                                                        COMPANIES
                                                                       COMBINED PREDECESSOR        --------------------
                                                                             COMPANIES                                    PENTEGRA
                                                                  -------------------------------    SIX MONTHS ENDED    -----------
                                                                                                                         SIX MONTHS
                                                                      YEAR ENDED DECEMBER 31             JUNE 30         ENDED JUNE
                                                                  -------------------------------  --------------------      30,
                                                                    1994       1995       1996       1996       1997        1997
                                                                  ---------  ---------  ---------  ---------  ---------  -----------
                                                                                                        UNAUDITED
<S>                                                               <C>        <C>        <C>        <C>        <C>        <C>
Statement of Operations Data:
Revenue.........................................................  $     943  $     841  $     922  $     371  $     508   $      --
Expenses
  Staff salaries, wages and benefits............................        181        246        292        122        126          --
  Lecture and seminar expenses..................................        117         96         70         47        161          --
  Rent..........................................................        148        144        159         46         74          --
  General and administrative expenses...........................        364        313        360         93        125          91
  Advertising expenses..........................................         17          4          3          3         --          --
  Depreciation..................................................         21         24          8          4          4          --
  Other expenses................................................         15          9          2          2         11         148
                                                                  ---------  ---------  ---------  ---------  ---------  -----------
    Total expenses..............................................        863        836        894        317        501         239
                                                                  ---------  ---------  ---------  ---------  ---------  -----------
Income (loss) from operations...................................         80          5         28         54          7        (239)
Interest expense................................................         49         46         52         27          5          --
                                                                  ---------  ---------  ---------  ---------  ---------  -----------
Income (loss) before income taxes and extraordinary gain........         31        (41)       (24)        27          2        (239)
Provision (benefit) for income taxes............................         26        (13)         7          3         --          --
                                                                  ---------  ---------  ---------  ---------  ---------  -----------
Income (loss) before extraordinary gain.........................          5        (28)       (31)        24          2        (239)
Extraordinary gain, net of income tax effect of $5..............         --          7         --         --         --          --
                                                                  ---------  ---------  ---------  ---------  ---------  -----------
  Net income (loss).............................................  $       5  $     (21) $     (31) $      24  $       2   $    (239)
                                                                  ---------  ---------  ---------  ---------  ---------  -----------
                                                                  ---------  ---------  ---------  ---------  ---------  -----------
  Net income (loss) per share...................................                                                          $   (0.14)
                                                                                                                         -----------
                                                                                                                         -----------
Weighted average outstanding shares.............................                                                              1,757
                                                                                                                         -----------
                                                                                                                         -----------
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                                                        SIX MONTHS
                                                                                                          YEAR ENDED       ENDED
                                                                                                         DECEMBER 31,    JUNE 30,
                                                                                                             1996          1997
                                                                                                         -------------  -----------
<S>                                                                                                      <C>            <C>
Supplemental Data(1):
  Total patient revenue for the Founding Affiliated Practices..........................................    $  39,214     $  19,586
  Total pro forma Service Agreement revenue of the Company.............................................    $  27,072     $  13,403
</TABLE>
<TABLE>
<CAPTION>
                                                                          COMBINED PREDECESSOR
                                                                               COMPANIES            COMBINED
                                                                         ----------------------    PREDECESSOR
                                                                                                    COMPANIES      PENTEGRA
                                                                              DECEMBER 31        ---------------  -----------
                                                                         ----------------------     JUNE 30,       JUNE 30,
                                                                           1995        1996           1997           1997
                                                                         ---------     -----     ---------------  -----------
<S>                                                                      <C>        <C>          <C>              <C>
Balance Sheet Data:
Cash and cash equivalents(3)...........................................  $       9   $      38      $      66      $     845
Working capital (deficit)..............................................       (352)        (29)            (4)         1,175
Total assets...........................................................         48          74             88          1,396
Notes payable, net of current portion..................................         --           9              5             --
Redeemable preferred stock.............................................         --          --             --          1,089
Stockholders' equity (deficit).........................................       (329)        (17)            10            297
 
<CAPTION>
 
                                                                         AS ADJUSTED(2)
                                                                         ---------------
                                                                            JUNE 30,
                                                                              1997
                                                                         ---------------
<S>                                                                      <C>
Balance Sheet Data:
Cash and cash equivalents(3)...........................................     $  16,170
Working capital (deficit)..............................................        15,678
Total assets...........................................................        20,049
Notes payable, net of current portion..................................            --
Redeemable preferred stock.............................................            --
Stockholders' equity (deficit).........................................        18,663
</TABLE>
 
- -------------
 
(1) See Note 4 of Notes to the Pentegra Dental Group, Inc. Financial Statements.
 
(2) As adjusted gives effect to (i) the Offering, (ii) the Acquisitions, (iii)
    the repayment of certain debt of Pentegra and the Founding Affiliated
    Practices, (iv) the Pentegra/Napili Transaction, (v) the Share Exchange and
    (vi) the Repurchase and Redemption, as if such transactions had occurred on
    June 30, 1997. See the Unaudited Pro Forma Balance Sheet of Pentegra and the
    notes thereto included in this Prospectus.
 
(3) See "Use of Proceeds."
 
                                       6
<PAGE>
                                  RISK FACTORS
 
    IN ADDITION TO THE OTHER INFORMATION CONTAINED IN THIS PROSPECTUS,
PROSPECTIVE INVESTORS SHOULD CONSIDER THE FOLLOWING FACTORS IN EVALUATING THE
COMPANY AND ITS BUSINESS BEFORE PURCHASING ANY OF THE SHARES OF THE COMMON STOCK
OFFERED HEREBY. THIS PROSPECTUS CONTAINS FORWARD-LOOKING STATEMENTS THAT INVOLVE
RISKS AND UNCERTAINTIES. ACTUAL RESULTS COULD DIFFER MATERIALLY FROM THOSE
DISCUSSED IN THE FORWARD-LOOKING STATEMENTS AS A RESULT OF CERTAIN FACTORS,
INCLUDING THOSE SET FORTH BELOW AND ELSEWHERE IN THIS PROSPECTUS.
 
ABSENCE OF COMBINED OPERATING HISTORY
 
    The Company was incorporated in 1997 and has conducted no operations to date
other than in connection with the Offering and the Acquisitions. The Company has
entered into agreements to acquire substantially all the assets and assume
certain liabilities of the Founding Affiliated Practices concurrently with the
closing of the Offering. In connection with the Acquisitions, the Company is
entering into Service Agreements with the Founding Affiliated Practices for
initial terms of 40 years (subject to early termination by either party for
"cause," which includes a material default by or bankruptcy of the other party).
See "Business--Service Agreements." Historically, the Founding Affiliated
Practices have operated as separate independent entities. There can be no
assurance that the process of integrating the management and administrative
functions of the Founding Affiliated Practices will be successful or that the
Company's management will be able to manage these operations effectively or
implement the Company's operating or expansion strategies successfully. Failure
by the Company to implement its operating and expansion strategies successfully
would have a material adverse effect on the Company. See "Business--Business
Strategy" and "--Service Agreements."
 
RELIANCE ON AFFILIATED PRACTICES AND DENTISTS
 
    The Company will receive fees for management services provided to the
Affiliated Practices under the Service Agreements. It will not employ dentists
or control the practice of dentistry by the dentists employed by the Affiliated
Practices, and its management services revenue generally will depend on revenue
generated by the Affiliated Practices. In some cases, the management fees will
be based on the costs and expenses the Company incurs in connection with
providing management services. While the laws of some states permit the Company
to participate in the negotiations by Affiliated Practices of managed care
contracts, preferred provider arrangements and other negotiated price
agreements, the Affiliated Practices will be the contracting parties for those
relationships, and the Company will be dependent on its Affiliated Practices for
the success of any such relationships. Accordingly, the profitability of those
payor relationships, as well as the performance of the individual dentists
employed by the Affiliated Practices, will affect the Company's profitability.
See "Management's Discussion and Analysis of Financial Condition and Results of
Operations--Overview" and "Business--Service Agreements."
 
    The revenue of the Affiliated Practices (and, therefore, the success of the
Company) is dependent on fees generated by the dentists employed by the
Affiliated Practices. In connection with the Service Agreements, each dentist
who owns a Founding Affiliated Practice will enter into a five-year employment
agreement with the professional corporation or other entity with which that
dentist is affiliated (and which is a party to a Service Agreement). The dentist
employment agreements provide that the employee dentist will not compete with
the Affiliated Practice during the term of the agreement and following the
termination of the agreement for a term of two years in a specified geographical
area. In most states, however, a covenant not to compete will be enforced only
to the extent it is necessary to protect a legitimate business interest of the
party seeking enforcement, does not unreasonably restrain the party against whom
enforcement is sought and is not contrary to the public interest. This
determination is made based on all the facts and circumstances of the specific
case at the time enforcement is sought. Thus, there can be no assurance that a
court will enforce such a covenant in a given situation. In addition, no
judicial precedents have addressed whether a dental practice management
company's interest under a management or service agreement will be viewed as the
type of protectable business interest that would permit it
 
                                       7
<PAGE>
to enforce such a covenant or to require an affiliated practice to enforce such
covenants against an employee dentist. A substantial reduction in the number of
dentists employed by or associated with the Affiliated Practices could have a
material adverse effect on the financial performance of the Company. Failure by
the Affiliated Practices to employ a sufficient number of dentists (whether by
renewals of existing employment agreements or otherwise) would have a material
adverse effect on the Company. See "Business--Dentist Employment Agreements."
 
INTEGRATION OF MANAGEMENT INFORMATION SYSTEMS
 
    The success of the Company's business strategy will be dependent on, among
other things, the successful implementation of new management information
systems and other operating systems to permit the effective integration of the
administrative operations of the Affiliated Practices into the Company's
operations. For example, the Company will be required to integrate its financial
information system with existing practice management systems at the Affiliated
Practices, which may be different from those used by the Company. Any
significant delay or increase in expense associated with the conversion and
integration of management information systems used by Affiliated Practices could
have a material adverse effect on the successful implementation of the Company's
expansion strategy. In addition, the Company will have some systems that are
decentralized, including cash collections. Accordingly, the Company will rely on
local staff for certain functions, including upstreaming cash to the Company.
See "Business-- Management Information Systems."
 
RISKS ASSOCIATED WITH EXPANSION STRATEGY
 
    The success of the Company's expansion strategy will depend on a number of
factors, including the Company's ability to (i) identify attractive and willing
candidates to become Affiliated Practices in suitable markets and in suitable
locations within those markets, (ii) affiliate with acceptable Affiliated
Practices on favorable terms, (iii) adapt the Company's structure to comply with
present or future legal requirements affecting the Company's arrangements with
Affiliated Practices and comply with regulatory and licensing requirements
applicable to dentists and facilities operated and services offered by dentists,
(iv) obtain suitable financing to facilitate its expansion program and (v)
expand the Company's infrastructure and management to accommodate expansion. A
shortage of available dentists with the skills and experience sought by the
Company would have a material adverse effect on the Company's expansion
opportunities, and the Company anticipates facing substantial competition from
other companies to establish affiliations with additional dental practices.
There can be no assurance that the Company's expansion strategy will be
successful, that modifications to the Company's strategy will not be required,
that the Company will be able to manage effectively and enhance the
profitability of additional Affiliated Practices or that the Company will be
able to obtain adequate financing on reasonable terms to support its expansion
program. Furthermore, using shares of Common Stock as consideration for (or in
order to provide financing for) future acquisitions could result in significant
dilution to then-existing stockholders. In addition, future acquisitions
accounted for as purchases may result in substantial annual noncash amortization
charges for intangible assets in the Company's statements of operations. There
can be no assurance that the Company will be able to achieve planned growth,
that the assets of dental practices will continue to be available for
acquisition by the Company, that the Company will be able to realize expected
operating and economic efficiencies from pending or future acquisitions or that
the addition of Affiliated Practices will be profitable. See "--Competition,"
"--Immediate and Substantial Dilution and Absence of Dividends," "Management's
Discussion and Analysis of Financial Condition and Results of
Operations--Overview" and "Business--Business Strategy."
 
NEED FOR ADDITIONAL FINANCING
 
    The Company's expansion program will require substantial capital resources.
Capital is needed not only for the acquisition of the assets of additional
Affiliated Practices, but also for the effective integration,
 
                                       8
<PAGE>
operation and expansion of the Affiliated Practices. The Affiliated Practices
may from time to time require capital for renovation and expansion and for the
addition of equipment and technology. The Company believes the net proceeds from
the Offering and cash flow from operations will be sufficient to meet the
Company's anticipated expansion and working capital needs through the end of
1998. Thereafter, however, the Company may require additional capital from
outside financing sources in order to continue its expansion program. There can
be no assurance that the Company will be able to obtain additional funds when
needed on satisfactory terms or at all. Any significant limitation on the
Company's ability to obtain additional financing could have a material adverse
effect on the Company. See "Management's Discussion and Analysis of Financial
Condition and Results of Operations--Liquidity and Capital Resources."
 
PROCEEDS OF OFFERING PAYABLE TO AFFILIATES
 
    In connection with the closing of the Acquisitions, the Company will pay,
out of proceeds from the Offering, approximately $6.5 million in cash to the
owners of the Founding Affiliated Practices, including approximately $216,326 to
Ronnie L. Andress, D.D.S., $130,027 to James H. Clarke, Jr., D.D.S., $143,183 to
Mack E. Greder, D.D.S., $144,017 to Roger Allen Kay, D.D.S., and $295,830 to
Ronald M. Yaros, D.D.S. In addition, the Company will use $200,000 of the
proceeds from the Offering to purchase substantially all of the tangible and
intangible assets of Pentegra, Ltd. and Napili, both of which entities are
controlled by Dr. Reed. The Company will also use approximately $2.8 million of
the proceeds from the Offering in connection with the Repurchase and Redemption
of PII's Class A Preferred and Class B Preferred, including approximately
$37,500 to Dr. Reed, $37,500 to Gary S. Glatter, $334 to James L. Dunn, Jr.,
$667 to J. Michael Casas, $50,000 to Dr. Greder and $50,000 to Dr. Kay. See "Use
of Proceeds" and "Certain Transactions--Organization of the Company."
 
GOVERNMENT REGULATION
 
    Various federal and state laws regulate the dental services industry.
Regulatory oversight includes, but is not limited to, considerations of
corporate practice of dentistry, fee splitting, fraud and abuse, self-referral,
false claims and insurance regulation.
 
    CORPORATE PRACTICE OF DENTISTRY AND FEE SPLITTING RESTRICTIONS
 
    The laws of many states prohibit business corporations such as the Company
from engaging in the practice of dentistry or employing dentists to practice
dentistry and prohibit dentists from splitting fees with non-dentists. The
specific restrictions against the corporate practice of dentistry, as well as
the interpretation of those restrictions by state regulatory authorities, vary
from state to state. The restrictions are generally designed to prohibit a
non-dental entity (such as the Company) from controlling the professional assets
of a dental practice (such as patient records and payor contracts), employing
dentists to practice dentistry (or, in certain states, employing dental
hygienists or dental assistants), or controlling the content of a dentist's
advertising or professional practice. The laws of many states also prohibit
dentists from sharing professional fees with non-dental entities. State dental
boards do not generally interpret these prohibitions as preventing a non-dental
entity from owning non-professional assets used by a dentist in a dental
practice or providing management services to a dentist for a fee, provided
certain conditions are met. The Company believes that its operations will not
contravene any applicable restriction on the corporate practice of dentistry and
that the management fees it intends to charge for its services are consistent
with the laws and regulations of the jurisdictions in which it will operate
concerning fee-splitting. There can be no assurance, however, that a review of
the Company's business relationships by courts or regulatory authorities will
not result in determinations that could prohibit or otherwise adversely affect
the operations of the Company or that the regulatory environment will not
change, requiring the Company to reorganize or restrict its existing or future
operations. The laws regarding fee-splitting and the corporate practice of
dentistry and their interpretation are enforced by regulatory authorities with
broad discretion. There can be no assurance that the legality of the Company's
business or its relationship with the Affiliated
 
                                       9
<PAGE>
Practices will not be successfully challenged or that the enforceability of the
provisions of any Service Agreement will not be limited.
 
    FRAUD AND ABUSE LAWS AND RESTRICTIONS ON REFERRALS AND SELF-REFERRALS
 
    Many states in which the Founding Affiliated Practices are located have
fraud and abuse laws that, in many cases, apply to referrals for items or
services reimbursable by any insurer, not just by Medicare and Medicaid. A
number of states, including many of the states in which the Founding Affiliated
Practices are located, also impose significant penalties for submitting false
claims for dental services. In addition, most states have laws prohibiting
paying or receiving any remuneration, direct or indirect, that is intended to
induce referrals for health care items or services, including dental items and
services. Many states in which the Founding Affiliated Practices are located
either prohibit or require disclosure of self-referral arrangements and impose
penalties for the violation of these laws. Many states, including Alaska,
Florida and Maine, limit the ability of a person other than a licensed dentist
to own or control equipment or offices used in a dental practice. Some of these
states allow leasing of equipment and office space to a dental practice under a
bona fide lease, if the equipment and office remain under the control of the
dentist.
 
    ADVERTISING RESTRICTIONS AND LIMITATIONS ON DELEGATION
 
    Some states prohibit the advertising of dental services under a trade or
corporate name. Some states, including Texas, require all advertisements to be
in the name of the dentist. A number of states also regulate the content of
advertisements of dental services and the use of promotional gift items. In
addition, many states impose limits on the tasks that may be delegated by
dentists to hygienists and dental assistants. These laws and their
interpretations vary from state to state and are enforced by the courts and by
regulatory authorities with broad discretion.
 
    INSURANCE REGULATION
 
    There are certain state insurance regulatory risks associated with the
Company's anticipated role in negotiating and administering managed care
contracts on behalf of the Affiliated Practices. The application of state
insurance laws to third-party payor arrangements, other than fee-for-service
arrangements, is an unsettled area of law with little guidance available. State
insurance laws are subject to broad interpretation by regulators and, in some
states, state insurance regulators may determine that the Company or the
Affiliated Practices are engaged in the business of insurance because of the
capitation features (or similar features under which an Affiliated Practice
assumes financial risk) that may be contained in managed care contracts. In the
event the Company or an Affiliated Practice is determined to be engaged in the
business of insurance, the Company or the Affiliated Practice could be required
to either seek licensure as an insurance company or change the form of its
relationships with the third-party payors. There can be no assurance that the
Company's operations would not be adversely affected if the Company or any of
the Affiliated Practices were to become subject to state insurance regulations.
 
    HEALTH CARE REFORM
 
    The United States Congress has considered various types of health care
reform, including comprehensive revisions to the current health care system. It
is uncertain what legislative proposals, if any, will be adopted in the future
or what actions federal or state legislatures or third-party payors may take in
anticipation of or in response to any health care reform proposals or
legislation. There can be no assurance that applicable federal or state laws and
regulations will not change or be interpreted in the future either to restrict
or adversely affect the Company's relationships with dentists or the operation
of Affiliated Practices. See "Business--Government Regulation."
 
                                       10
<PAGE>
RISKS ASSOCIATED WITH COST CONTAINMENT INITIATIVES
 
    The health care industry, including the dental services market, is
experiencing a trend toward cost containment, as third-party and government
payors seek to impose lower reimbursement rates on providers. The Company
believes this trend will continue and will increasingly affect dental services.
This may result in a reduction in per-patient and per-procedure revenue from
historical levels. There can be no assurance that any reductions in revenues and
operating margins could be offset through cost reductions, increased volume,
introduction of new procedures or otherwise. Accordingly, significant reductions
in payments to Affiliated Practices or other changes in reimbursement by
third-party payors for dental services performed by Affiliated Practices may
have a material adverse effect on the Company.
 
RISKS ASSOCIATED WITH MANAGED CARE CONTRACTS; CAPITATED FEE REVENUE
 
    The Company believes that managed care arrangements are becoming more
prevalent in certain sectors of the dental services industry. As an increasing
percentage of the population is covered by managed care organizations that
provide dental coverage, the Company believes its future success may be
dependent, in part, on its ability to assist the Affiliated Practices in
negotiating contracts with dental health maintenance organizations, insurance
companies, self insurance plans and other private third-party payors pursuant to
which services will be provided on some type of fee-for-service or capitated
basis by some of its Affiliated Practices. Under certain capitated contracts,
the health care provider accepts a predetermined amount per patient per month as
its sole payment in exchange for providing a specific schedule of services to
enrollees. These contracts shift much of the risk of providing health care from
the payor to the provider. To the extent that the Affiliated Practices enter
into capitated managed care arrangements, they are exposed to the risk that the
cost of providing dental care required by these contracts exceeds the amount
that the Affiliated Practice receives for providing such dental care. To the
extent the Affiliated Practices enter into additional managed care contracts,
the Affiliated Practices may achieve greater predictability of revenues but
greater unpredictability of expenses due to the fluctuating costs of the
services provided. There can be no assurance that the Company will be able to
negotiate on behalf of the Affiliated Practices satisfactory arrangements on a
capitated basis, regardless of the amount of risk sharing. In addition, to the
extent that patients or enrollees covered by certain of these contracts require,
in the aggregate, more frequent or extensive care than anticipated, operating
margins may be reduced, or the revenues derived from these agreements may be
insufficient to cover the costs of the services provided. As a result,
Affiliated Practices would be at risk for additional costs which would reduce or
eliminate any earnings for the Affiliated Practices under these contracts with a
corresponding reduction in or elimination of the service fee payable to the
Company.
 
CONTROL BY EXISTING MANAGEMENT AND STOCKHOLDERS
 
    Following the completion of the Acquisitions and the Offering, Dr. Reed, the
Company's Chairman of the Board, the other executive officers and directors of
the Company as a group and the owners of the Founding Affiliated Practices other
than Dr. Reed will beneficially own approximately 2.9%, 18.5% and 32.6%,
respectively, of the outstanding shares of Common Stock. These persons, if
acting in concert, will be able to exercise control over the Company's affairs,
elect the entire Board of Directors and (subject to Section 203 of the Delaware
General Corporation Law ("DGCL")) control the outcome of any matter submitted to
a vote of stockholders. The Company's Bylaws provide that a majority of the
members of the Board of Directors must be licensed dentists who are affiliated
with Affiliated Practices. Each of Dr. Reed and the other board members who own
an Affiliated Practice will be a party to a Service Agreement with the Company.
In connection with the provision of management services by the Company to the
Affiliated Practices owned by those dentists, potential conflicts may arise. See
"Security Ownership of Certain Beneficial Owners and Management" and "Certain
Transactions."
 
                                       11
<PAGE>
DEPENDENCE ON KEY PERSONNEL
 
    The Company's future performance depends in significant part on the
continued service of its senior management, including Dr. Reed and Gary S.
Glatter, the President and Chief Executive Officer of the Company. There can be
no assurance that these individuals will continue to work for the Company. Loss
of services of those persons could have a material adverse effect on the
Company. The success of the
Company's growth strategy will also depend on the Company's ability to attract
and retain additional high quality personnel. See "Business--Employees" and
"Management."
 
COMPETITION
 
    The Company anticipates facing substantial competition from other companies
to establish affiliations with additional dental practices. The Company is aware
of several practice management companies focused on dentistry and several
companies pursuing similar strategies in other segments of the health care
industry (including dentistry). Certain of these competitors have greater
financial and other resources than the Company and have operations in areas
where the Company may seek to expand in the future. Additional companies with
similar objectives are expected to enter the Company's markets and compete with
the Company. In addition, the business of providing dental services is highly
competitive in each market in which the Company will operate. Each of the
Founding Affiliated Practices faces local competition from other dentists,
pedodontists (dentists specializing in the care of children's teeth) and other
providers of specialty dental services (such as periodontists, orthodontists and
oral surgeons) some of whom have more established practices. There can be no
assurance that the Company or the Affiliated Practices will be able to compete
effectively with their respective competitors, that additional competitors will
not enter their markets or that additional competition will not have a material
adverse effect on the Company or the Affiliated Practices. See
"Business--Competition."
 
MALPRACTICE RISKS OF PROVIDING DENTAL SERVICES
 
    The Affiliated Practices provide dental services to the public and are
exposed to the risk of professional liability and other claims. In recent years,
dentists have become subject to an increasing number of lawsuits alleging
malpractice and related legal theories. Some of these lawsuits may involve large
claims and significant defense costs. Any suits involving the Company or
dentists at the Affiliated Practices, if successful, could result in substantial
damage awards to the claimants that may exceed the limits of any applicable
insurance coverage. Although the Company will not control the practice of
dentistry by the Affiliated Practices, it could be asserted that the Company
should be held liable for malpractice of a dentist employed by an Affiliated
Practice. Each Affiliated Practice has undertaken to comply with all applicable
regulations and legal requirements, and the Company maintains liability
insurance for itself. There can be no assurance, however, that a future claim or
claims will not be successful or, if successful, will not exceed the limits of
available insurance coverage or that such coverage will continue to be available
at acceptable costs. Malpractice insurance, moreover, can be expensive and
varies from state to state. Successful malpractice claims asserted against the
Affiliated Practices (or their dentists) or the Company may have a material
adverse effect on the Company. See "Business--Litigation and Insurance."
 
POTENTIAL EFFECT OF SHARES ELIGIBLE FOR FUTURE SALE ON PRICE OF COMMON STOCK
 
    The market price of the Common Stock of the Company could be adversely
affected by the sale of substantial amounts of the Common Stock in the public
market following the Offering. The shares being sold in the Offering will be
freely tradable unless acquired by affiliates of the Company.
 
    Concurrently with the closing of the Offering, the owners of the Founding
Affiliated Practices will receive, in the aggregate, 2,062,511 shares of Common
Stock as a portion of the consideration for the assets of their practices.
Certain other stockholders of the Company will hold, in the aggregate, an
 
                                       12
<PAGE>
additional 1,756,667 shares of Common Stock. Those shares are not being offered
and sold pursuant to this Prospectus. None of those 3,819,178 shares were
acquired in transactions registered under the Securities Act and, accordingly,
such shares may not be sold except in transactions registered under the
Securities Act or pursuant to an exemption from registration. In addition, the
Company's executive officers, directors and current stockholders and the persons
acquiring shares of Common Stock in connection with the Acquisitions have agreed
with the Company that they will not sell any of the 3,819,178 shares of Common
Stock owned by them immediately after the consummation of the Acquisitions for a
period of one year following the closing of the Offering, subject to their right
to exercise certain piggy-back registration rights. After the expiration of that
restricted period, all of those shares may be sold in accordance with Rule 144
under the Securities Act, subject to the applicable volume limitations, holding
period and other requirements of Rule 144.
 
    The Company, its directors, executive officers and current stockholders, and
all persons acquiring shares of Common Stock in connection with the Acquisitions
have agreed not to offer or sell any shares of Common Stock for a period of 180
days (the "180-Day Lockup Period") following the date of this Prospectus without
the prior written consent of Lehman Brothers Inc., except that the Company may,
subject to certain conditions, issue Common Stock in connection with
acquisitions and awards under the 1997 Stock Compensation Plan.
 
    Following completion of the Offering, the Company intends to register the
issuance of an additional 1,500,000 shares of its Common Stock under the
Securities Act subsequent to completion of the Offering for use by the Company
as all or a portion of the consideration to be paid in future acquisitions.
Those shares will generally be freely tradable by nonaffiliates after their
issuance, unless the resale thereof is contractually restricted, and resales of
those shares during the 180-Day Lockup Period would require the prior written
consent of Lehman Brothers Inc.
 
    The Company anticipates that, prior to the consummation of the Offering, the
Company will have outstanding under the 1997 Stock Compensation Plan options to
purchase approximately 646,667 shares of Common Stock. The Company intends to
register the shares issuable upon exercise of options granted under the 1997
Stock Compensation Plan. See "Management--1997 Stock Compensation Plan" and
"Shares Eligible for Future Sale."
 
NO PRIOR MARKET; POSSIBLE VOLATILITY OF STOCK PRICE
 
    Prior to the Offering, there has been no public market for the Common Stock,
and there can be no assurance that an active trading market will develop or, if
a trading market does develop, that it will continue after the Offering. The
initial public offering price of the Common Stock, which will be determined
through negotiations between the Company and the Underwriters, may not be
indicative of the price at which the Common Stock will trade after the Offering.
See "Underwriting" for a description of the factors considered in determining
the initial public offering price. The securities markets have, from time to
time, experienced significant price and volume fluctuations that may be
unrelated to the operating performance of particular companies. These
fluctuations often substantially affect the market price of a company's common
stock. The market prices for securities of medical and dental practice
management companies have in the past been, and can be expected to be,
particularly volatile. The market price of the Common Stock could be subject to
significant fluctuations in response to numerous factors, including variations
in financial results or announcements of material events by the Company or its
competitors. Regulatory changes, developments in the health care industry or
changes in general conditions in the economy or the financial markets could also
adversely affect the market price of the Common Stock.
 
CERTAIN ANTI-TAKEOVER PROVISIONS
 
    Certain provisions of the Company's Restated Certificate of Incorporation
(the "Certificate of Incorporation") and Bylaws and of Delaware law could,
together or separately, discourage potential
 
                                       13
<PAGE>
acquisition proposals, delay or prevent a change in control of the Company or
limit the price that certain investors might be willing to pay in the future for
shares of the Common Stock. The Certificate of Incorporation provides for "blank
check" preferred stock, which may be issued without stockholder approval and
provides for a "staggered" Board of Directors. In addition, certain provisions
of the Company's Bylaws restrict the right of the stockholders to call a special
meeting of stockholders, to nominate directors, to submit proposals to be
considered at stockholders' meetings and to adopt amendments to the Bylaws, and
the Bylaws require that at least a majority of the members of the Board of
Directors be licensed dentists who are affiliated with Affiliated Practices. The
Company also is subject to Section 203 of the DGCL, which, subject to certain
exceptions, prohibits a Delaware corporation from engaging in any of a broad
range of business acquisitions with an "interested stockholder" for a period of
three years following the date such stockholder became an interested
stockholder. See "Description of Capital Stock."
 
IMMEDIATE AND SUBSTANTIAL DILUTION AND ABSENCE OF DIVIDENDS
 
    Purchasers of shares of Common Stock offered hereby will experience
immediate and substantial dilution in the pro forma net tangible book value of
their shares in the amount of $    per share. See "Dilution." In the event the
Company issues additional Common Stock in the future, including shares that may
be issued in connection with future acquisitions, purchasers of Common Stock in
the Offering may experience further dilution in the net tangible book value per
share of Common Stock. The Company has never paid any cash dividends and does
not anticipate paying cash dividends on its Common Stock in the foreseeable
future. See "Dividend Policy."
 
                                       14
<PAGE>
                                  THE COMPANY
 
    The Company was organized in 1997 and has conducted no operations to date
other than in connection with the Offering and the Acquisitions. The Company has
entered into agreements to acquire substantially all the assets and assume
certain liabilities of the Founding Affiliated Practices, Pentegra, Ltd. and
Napili concurrently with the closing of the Offering. The Company's principal
executive offices are located at 2999 N. 44th Street, Suite 650, Phoenix,
Arizona 85018, and its telephone number is (602) 952-1200.
 
                                USE OF PROCEEDS
 
    The net proceeds to the Company from the sale of the shares of Common Stock
offered hereby (after deducting the underwriting discounts and commissions and
estimated offering expenses (excluding the offering expenses previously funded
with proceeds from the issuance of capital stock of PII, including all the Class
A Preferred and Class B Preferred being acquired in the Repurchase and
Redemption)) are estimated to be approximately $    million (approximately $
million if the Underwriters' over-allotment option is exercised in full),
assuming an initial public offering price of $     per share (the midpoint of
the estimated initial public offering price range). Of those net proceeds, (i)
approximately $6.5 million will be used to pay the cash portion of the
consideration for the Acquisitions, (ii) $200,000 will be used to effect the
Pentegra/Napili Transaction, (iii) approximately $2.8 million will be used in
connection with the Redemption and Repurchase, (iv) approximately $2.9 million
will be used to repay certain indebtedness of the Company and the Founding
Affiliated Practices and (v) approximately $300,000 will be used to repay the
$300,000 aggregate principal amount outstanding under the Company's 9.5%
promissory notes issued on September 30, 1997 to fund certain of the Company's
offering and operating expenses. The indebtedness of the Founding Affiliated
Practices to be repaid bears interest at an average rate of eight percent and
would otherwise mature at various dates through 2002. The remaining net proceeds
will be used for general corporate purposes, which are expected to include
future acquisitions and future capital expenditures. Other than with respect to
the Acquisitions, the Company currently has no agreement or understanding with
respect to any future acquisition. Pending such uses, the net proceeds will be
invested in short-term, interest-bearing, investment-grade securities. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations--Liquidity and Capital Resources."
 
                                DIVIDEND POLICY
 
    It is the Company's current intention to retain earnings for the foreseeable
future to support operations and finance expansion. The payment of any future
dividends will be at the discretion of the Company's Board of Directors and will
depend upon, among other things, the Company's earnings, financial condition,
cash flow from operations, capital requirements, expansion plans, the income tax
laws then in effect, the requirements of Delaware law and restrictions that may
be imposed by the Company's future financing arrangements.
 
                                       15
<PAGE>
                                    DILUTION
 
    The net tangible book value of the Company as of June 30, 1997 was $0.05 per
share of Common Stock as determined by dividing the tangible net worth of the
Company (tangible assets less total liabilities and the aggregate stated value
of the Class A Preferred and Class B Preferred) by the number of shares of
Common Stock outstanding. After giving effect to (i) the Acquisitions and (ii)
the sale by the Company of 2,500,000 shares of Common Stock offered at a price
of $    per share (the midpoint of the estimated initial public offering price
range) and the application of the estimated net proceeds therefrom as set forth
under "Use of Proceeds," the net pro forma tangible book value of the Company as
of June 30, 1997 would have been $2.93 per share. This represents an immediate
increase in the net tangible book value of $2.88 per share to existing
stockholders and an immediate dilution to new investors purchasing Common Stock
in the Offering of $    per share. The following table illustrates the per share
dilution to new investors purchasing Common Stock in the Offering:
 
<TABLE>
<S>                                                            <C>        <C>
Assumed initial public offering price per share(1)...........             $
  Historical net tangible book value.........................  $    0.05
  Increase due to Acquisitions and the Offering..............  $    2.88
                                                               ---------
  Pro forma net tangible book value per share after the
    Offering.................................................             $    2.93
                                                                          ---------
Dilution per share to initial public offering investors......             $
                                                                          ---------
                                                                          ---------
</TABLE>
 
- ---------
 
(1) Before deducting estimated underwriting discounts and estimated expenses of
    the Offering payable by the Company.
 
    The dilution to new investors purchasing shares in the Offering will
increase if the initial public offering price is higher, and will decrease if
the initial public offering price is lower, than $    per share.
 
    The following table sets forth, on a pro forma basis to give effect to the
Acquisitions as of June 30, 1997, the number of shares of Common Stock purchased
from the Company, the total consideration to the Company and the average price
per share paid to the Company by existing stockholders and the new investors
purchasing shares from the Company in the Offering (before deducting
underwriting discounts and commissions and estimated offering expenses):
 
<TABLE>
<CAPTION>
                                         SHARES PURCHASED        TOTAL CONSIDERATION(1)      AVERAGE
                                      -----------------------  --------------------------   PRICE PER
                                        NUMBER      PERCENT       AMOUNT        PERCENT       SHARE
                                      ----------  -----------  -------------  -----------  -----------
<S>                                   <C>         <C>          <C>            <C>          <C>
Existing stockholders...............   3,819,178        60.4%  $  (6,609,018)           %   $
New investors.......................   2,500,000        39.6%  $                        %
                                      ----------       -----   -------------       -----
    Total...........................   6,319,178       100.0%  $                   100.0%
                                      ----------       -----   -------------       -----
                                      ----------       -----   -------------       -----
</TABLE>
 
- ---------
 
(1) Total consideration paid by existing stockholders represents the combined
    stockholders' equity of the Founding Affiliated Practices before the
    Offering, adjusted to reflect the payment of $6.5 million in cash as part of
    the consideration for the Acquisitions. See "Use of Proceeds" and
    "Capitalization."
 
    All of the calculations above exclude an aggregate of 646,667 shares of
Common Stock issuable upon exercise of stock options anticipated to be
outstanding on the date the Offering closes at an exercise price equal to the
initial public offering price per share under the 1997 Stock Compensation Plan
and 1,353,333 shares reserved for future issuance under the 1997 Stock
Compensation Plan. See "Management--1997 Stock Compensation Plan."
 
                                       16
<PAGE>
                                 CAPITALIZATION
 
    The following table sets forth the short-term debt and the capitalization of
the Company at June 30, 1997 on a historical basis and as adjusted to give
effect to (i) the Offering, (ii) the Acquisitions, (iii) the repayment of
certain debt of the Company and the Founding Affiliated Practices, (iv) the
Share Exchange, (v) the Pentegra/Napili Transaction and (vi) the Repurchase and
Redemption. See "Use of Proceeds." This table should be read in conjunction with
the unaudited Pro Forma Balance Sheet of Pentegra and the notes thereto included
elsewhere in this Prospectus.
 
<TABLE>
<CAPTION>
                                                                                             AS OF JUNE 30, 1997
                                                                                         ---------------------------
                                                                                         HISTORICAL   AS ADJUSTED(1)
                                                                                         -----------  --------------
                                                                                               (IN THOUSANDS)
<S>                                                                                      <C>          <C>
Short-term debt:
  Current portion of long-term debt....................................................   $      --     $       --
                                                                                         -----------       -------
  Total short-term debt................................................................   $      --     $       --
                                                                                         -----------       -------
                                                                                         -----------       -------
Long-term debt:
  Long-term debt, net of current portion...............................................          --             --
Redeemable Preferred Stock.............................................................       1,089             --
Stockholders' equity (deficit):
  Common Stock, 40,000,000 shares authorized; 1,756,667 shares issued and outstanding
    and         shares issued and outstanding as adjusted(1)...........................          18
  Additional paid-in capital(2)........................................................         518
  Accumulated deficit..................................................................        (239)
                                                                                         -----------       -------
    Total stockholders' equity.........................................................         297
                                                                                         -----------       -------
    Total capitalization...............................................................   $   1,386     $
                                                                                         -----------       -------
                                                                                         -----------       -------
</TABLE>
 
- ---------
 
(1) Excludes 646,667 shares of Common Stock subject to options granted pursuant
    to the 1997 Stock Compensation Plan. See "Management--1997 Stock
    Compensation Plan."
 
(2) The effect of the Acquisitions on additional paid-in capital is equal to the
    net of the aggregate liabilities to be assumed from the Founding Affiliated
    Practices (including $2.9 million of certain indebtedness to be assumed by
    the Company), and the aggregate book value of the assets to be acquired of
    $95,000, plus aggregate cash payments of $6.5 million to be made as part of
    the consideration for the Acquisitions less the par value of the Common
    Stock to be issued in connection with the Acquisitions.
 
                                       17
<PAGE>
                            SELECTED FINANCIAL DATA
                      (IN THOUSANDS EXCEPT PER SHARE DATA)
 
    The selected historical financial data of the Company and the Combined
Predecessor Companies should be read in conjunction with "Management's
Discussion and Analysis of Financial Condition and Results of Operations" and
the historical financial statements and the notes thereto included in this
Prospectus. The selected historical financial data of the Combined Predecessor
Companies as of December 31, 1995 and 1996 and for each of the years ended
December 31, 1994, 1995 and 1996 and the historical financial data of the
Company as of June 30, 1997 and for the period from inception, February 21,
1997, through June 30, 1997, set forth below, have been derived from the audited
financial statements of the Combined Predecessor Companies and the Company. The
selected historical financial data of the Combined Predecessor Companies set
forth below as of June 30, 1997 and for the years ended December 31, 1992 and
1993 and the six months ended June 30, 1996 and 1997 have been derived from the
unaudited financial statements of the Combined Predecessor Companies, which were
prepared on the same basis as the audited financial statements of the Combined
Predecessor Companies included elsewhere herein and which, in the opinion of
management of the Company, include all adjustments (consisting of normal
recurring adjustments) necessary to present fairly the information set forth
below. Except as indicated, this information does not reflect the effects of the
Offering, the Acquisitions, the Share Exchange, the Pentegra/Napili Transaction
and the Repurchase and Redemption. For certain information concerning the
Acquisitions, see Note 4 of Notes to the Pentegra Dental Group, Inc. Financial
Statements.
 
<TABLE>
<CAPTION>
                                                                                        COMBINED
                                                                                       PREDECESSOR
                                                                                       COMPANIES
                                                                                       ----------  PENTEGRA
                                                           YEAR ENDED DECEMBER 31                  --------
                                                       ------------------------------  SIX MONTHS    SIX
                                                                                       ENDED JUNE   MONTHS
                                                       COMBINED PREDECESSOR COMPANIES      30       ENDED
                                                       ------------------------------  ----------  JUNE 30,
                                                        1992   1993  1994  1995  1996  1996  1997    1997
                                                       ------  ----  ----  ----  ----  ----  ----  --------
                                                       (UNAUDITED)                     (UNAUDITED) (UNAUDITED)
<S>                                                    <C>     <C>   <C>   <C>   <C>   <C>   <C>   <C>
STATEMENT OF OPERATIONS DATA:
Revenue..............................................  $1,209  $680  $943  $841  $922  $371  $508   $   --
Expenses
  Staff salaries, wages and benefits.................     421   193   181   246   292   122   126       --
  Lecture and seminar expenses.......................     321   199   117    96    70    47   161       --
  Rent...............................................     141    73   148   144   159    46    74       --
  General and administrative expenses................     193   122   364   313   360    93   125       91
  Advertising expenses...............................      24     9    17     4     3     3    --       --
  Depreciation.......................................      45    15    21    24     8     4     4       --
  Other expenses.....................................       5    11    15     9     2     2    11      148
                                                       ------  ----  ----  ----  ----  ----  ----  --------
      Total expenses.................................   1,150   622   863   836   894   317   501      239
                                                       ------  ----  ----  ----  ----  ----  ----  --------
  Income (loss) from operations......................      59    58    80     5    28    54     7     (239)
  Interest expense...................................      50    42    49    46    52    27     5       --
                                                       ------  ----  ----  ----  ----  ----  ----  --------
  Income (loss) before income taxes and extraordinary
    gain.............................................       9    16    31   (41)  (24)   27     2     (239)
  Provision (benefit) for income taxes...............       2     4    26   (13)    7     3    --       --
                                                       ------  ----  ----  ----  ----  ----  ----  --------
  Income (loss) before extraordinary gain............       7    12     5   (28)  (31)   24     2     (239)
  Extraordinary gain, net of income tax effect of
    $5...............................................      --    --    --     7    --    --    --       --
                                                       ------  ----  ----  ----  ----  ----  ----  --------
      Net income (loss)..............................  $    7  $ 12  $  5  $(21) $(31) $ 24  $  2   $ (239)
                                                       ------  ----  ----  ----  ----  ----  ----  --------
                                                       ------  ----  ----  ----  ----  ----  ----  --------
      Net income (loss) per share....................                                               $(0.14)
                                                                                                   --------
                                                                                                   --------
Weighted average outstanding shares..................                                                1,757
                                                                                                   --------
                                                                                                   --------
</TABLE>
 
                                       18
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                                             SIX MONTHS
                                                                                                YEAR ENDED      ENDED
                                                                                               DECEMBER 31,   JUNE 30,
                                                                                                   1996         1997
                                                                                               ------------  -----------
<S>                                                                                            <C>           <C>
Supplemental Data(1):
  Total patient revenue for the Founding Affiliated Practices................................   $   39,214    $  19,586
  Total pro forma Service Agreement revenue of the Company...................................   $   27,072    $  13,403
</TABLE>
 
<TABLE>
<CAPTION>
                                                                        COMBINED           COMBINED
                                                                      PREDECESSOR         PREDECESSOR
                                                                       COMPANIES           COMPANIES      PENTEGRA    AS ADJUSTED(2)
                                                                  --------------------  ---------------  -----------  --------------
                                                                      DECEMBER 31          JUNE 30,       JUNE 30,       JUNE 30,
                                                                    1995       1996          1997           1997           1997
                                                                  ---------  ---------  ---------------  -----------  --------------
<S>                                                               <C>        <C>        <C>              <C>          <C>
BALANCE SHEET DATA:
Cash and cash equivalents(3)....................................  $       9  $      38     $      66      $     845     $   16,170
Working capital (deficit).......................................       (352)       (29)           (4)         1,175         15,678
Total assets....................................................         48         74            88          1,396         20,049
Notes payable, net of current portion...........................         --          9             5             --             --
Redeemable preferred stock......................................         --         --            --          1,089             --
Stockholders' equity (deficit)..................................       (329)       (17)           10            297         18,663
</TABLE>
 
- ------------
 
(1) See Note 4 of Notes to the Pentegra Dental Group, Inc. Financial Statements.
 
(2) As adjusted gives effect to (i) the Offering, (ii) the Acquisitions, (iii)
    the repayment of certain debt of Pentegra and the Founding Affiliated
    Practices, (iv) the Pentegra/Napili Transaction, (v) the Share Exchange and
    (vi) the Repurchase and Redemption, as if such transactions had occurred on
    June 30, 1997. See the Unaudited Pro Forma Balance Sheet of Pentegra and the
    notes thereto included in this Prospectus.
 
(3) See "Use of Proceeds."
 
                                       19
<PAGE>
               MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
                      CONDITION AND RESULTS OF OPERATIONS
 
    THE FOLLOWING DISCUSSION AND ANALYSIS CONTAINS CERTAIN STATEMENTS OF A
FORWARD-LOOKING NATURE RELATING TO FUTURE EVENTS OR THE FUTURE FINANCIAL
PERFORMANCE OF THE COMPANY. SUCH STATEMENTS ARE ONLY PREDICTIONS AND THE ACTUAL
EVENTS OR RESULTS MAY DIFFER MATERIALLY FROM THE RESULTS DISCUSSED IN THE
FORWARD-LOOKING STATEMENTS. FACTORS THAT COULD CAUSE OR CONTRIBUTE TO SUCH
DIFFERENCES INCLUDE, BUT ARE NOT LIMITED TO, THOSE DISCUSSED IN "RISK FACTORS,"
AS WELL AS THOSE DISCUSSED ELSEWHERE IN THIS PROSPECTUS. THE HISTORICAL RESULTS
SET FORTH IN THIS DISCUSSION AND ANALYSIS ARE NOT INDICATIVE OF TRENDS WITH
RESPECT TO ANY ACTUAL OR PROJECTED FUTURE FINANCIAL PERFORMANCE OF THE COMPANY.
THIS DISCUSSION AND ANALYSIS SHOULD BE READ IN CONJUNCTION WITH THE PRO FORMA
BALANCE SHEET, THE FINANCIAL STATEMENTS AND THE RELATED NOTES THERETO INCLUDED
ELSEWHERE IN THIS PROSPECTUS.
 
OVERVIEW
 
    Although the Company has conducted no significant operations to date, it
will succeed to the business of Pentegra, Ltd. and Napili, which developed the
Pentegra Dental Program. In connection with the Acquisitions, the Company will
acquire certain tangible and intangible assets and assume certain liabilities
of, and enter into Service Agreements with, the Founding Affiliated Practices.
Through the Service Agreements, the Company will be providing practice
management services to the Founding Affiliated Practices in return for
management service fees.
 
    The expenses incurred by the Company in fulfilling its obligations under the
Service Agreements are generally of the same nature as the operating costs and
expenses that were otherwise incurred by the Founding Affiliated Practices,
including salaries, wages and benefits of practice personnel (excluding dentists
and certain other licensed dental care professionals), dental supplies and
office supplies used in administering their practices and the office (general
and administrative) expenses of the practices. In addition to the operating
costs and expenses discussed above, the Company will be incurring personnel and
administrative expenses in connection with establishing and maintaining a
corporate office, which will provide management, administrative, marketing and
development and acquisition services that are generally of the same nature as
those that have historically been incurred by Pentegra, Ltd. and Napili in
connection with the provision of services to dental practices.
 
RESULTS OF OPERATIONS
 
    PENTEGRA AND PII
 
    Pentegra and PII have conducted no significant operations to date and will
not conduct significant operations until the Acquisitions, the Pentegra/Napili
Transaction and the Offering are completed. Nominal general and administrative
expenses were incurred during the six months ended June 30, 1997. The Company
has incurred and will continue to incur various legal, accounting, travel,
personnel and marketing costs in connection with the Acquisitions and the
Offering. Of these expenses, $1,450,000 is being funded with proceeds from the
issuances of the Common Stock, Class A Preferred and Class B Preferred in the
second quarter of 1997 and $300,000 is being funded with proceeds from the
issuance of $300,000 aggregate principal amount of 9.5% promissory notes of the
Company to two separate lenders in October 1997.
 
    PENTEGRA, LTD. AND NAPILI
 
    Pentegra, Ltd. and Napili provide clinical, administrative and marketing
consulting and training programs to dentists and their personnel. The
period-to-period comparisons set forth below for the combined operations of
Pentegra, Ltd. and Napili should be considered in conjunction with the
discussion of pro forma results of operations below.
 
                                       20
<PAGE>
    SIX MONTHS ENDED JUNE 30, 1997 COMPARED TO SIX MONTHS ENDED JUNE 30,
1996.  Total revenue for the six months ending June 30, 1997 was $508,000, a
$137,000 increase over the same period in 1996. The increase resulted primarily
from an increase in the number of seminars held by Napili and a 15 percent
increase in the number of persons participating in Pentegra, Ltd. consulting
programs. Expenses generally increased in proportion to the increase in seminars
and consulting programs except for lecture and seminar expenses, which increased
approximately 240% to $161,000. During 1997, Napili committed substantial
additional resources to improving the setting and amenities offered in
connection with its seminars to attract more participants. The Company expects
lecture and seminar expenses to decrease in future periods as it limits
participation to dentists employed by Affiliated Practices. In September 1996,
the owners of Pentegra, Ltd. and Napili contributed capital of $343,000, which
was used to repay indebtedness. Consequently, interest expense decreased by
$22,000 to $5,000 for the six months ended June 30, 1997 compared to the
corresponding period in the prior year.
 
    YEAR ENDED DECEMBER 31, 1996 COMPARED TO YEAR ENDED DECEMBER 31,
1995.  Total revenue was $922,000 in 1996, an increase of $81,000 over 1995,
resulting from an increase in the number of participants in Pentegra, Ltd.
consulting programs. Staff salaries, wages and benefits increased by $46,000 to
$292,000 because of additions of professional personnel by Pentegra, Ltd. Rent
and general and administrative expenses increased in support of the additional
personnel and enhanced consulting programs. Lecture and seminar expenses
decreased $26,000 to $70,000, reflecting a general change in venues for seminars
and lectures. Depreciation decreased by $16,000 to $8,000 because leasehold
improvements were fully depreciated in 1996.
 
    YEAR ENDED DECEMBER 31, 1995 COMPARED TO YEAR ENDED DECEMBER 31,
1994.  Total revenue decreased $102,000 to $841,000 in 1995, primarily as a
result of reduced marketing and promotional expenses of Pentegra, Ltd.
consulting programs due to the implementation of a new marketing strategy that
was subsequently abandoned. Staff additions also occurred in 1996, which
increased salaries, wages and benefits and increased focus on training new
personnel, rather than marketing. Lecture and seminar expenses decreased by
$21,000 to $96,000, reflecting more modest venues and a decrease in promotion,
which is also reflected in the $13,000 decrease in advertising.
 
    PLANNED OPERATIONS
 
    The Company intends to complete the Acquisitions and the Pentegra/Napili
Transaction concurrently with the Offering. See Note 4 of Notes to the Pentegra
Dental Group, Inc. Financial Statements. It is anticipated that substantially
all the Company's revenues will consist of fees under the Service Agreements.
Pro forma revenues of $27.1 million and $13.4 million for the year ended
December 31, 1996 and the six months ended June 30, 1997, respectively, are
based on the service fees that would have been payable pursuant to the Service
Agreements with the Founding Affiliated Practices. Revenues may be expected to
vary proportionately with the level of dental care provided by Affiliated
Practices.
 
LIQUIDITY AND CAPITAL RESOURCES
 
    PENTEGRA AND PII
 
    The Company had cash of approximately $845,000 at June 30, 1997. In July
1997, the Company received an additional $326,000 proceeds from its June 1997
private placement of Common Stock, Class A Preferred and Class B Preferred and,
in October 1997, the Company received an additional $300,000 through the
issuance of $300,000 aggregate principal amount of 9.5% promissory notes
aggregating to that amount to two lenders. In connection with the issuance of
the 9.5% promissory notes, PII issued an aggregate of 20,000 shares of its
common stock to the lenders for cash consideration of $.01 per share. The
Company anticipates receiving approximately $      million, net of underwriters'
commissions and other offering costs, as proceeds from the Offering. The Company
will use the net proceeds of the Offering to pay (i) the costs of the Offering
not previously funded from the proceeds of the issuance of capital stock of
 
                                       21
<PAGE>
PII, (ii) the cash portion of the consideration for the Acquisitions of
approximately $6.5 million, (iii) the consideration for the Pentegra/Napili
Transaction of $200,000, (iv) approximately $2.8 million in connection with the
Repurchase and Redemption, (v) approximately $2.9 million to retire certain
indebtedness of the Founding Affiliated Practices and (vi) approximately
$300,000 to repay the aggregate principal amount outstanding under the Company's
9.5% promissory notes. The remaining net proceeds will be used for general
corporate purposes, which are expected to include future acquisitions and
capital expenditures.
 
    Management believes the net proceeds of the Offering, combined with the
Company's cash flows from operations, will be sufficient to fund planned capital
expenditures and ongoing operations of the Company through the end of 1998. The
Company intends to register 1,500,000 shares of Common Stock under the
Securities Act for use in the Company's acquisition program.
 
    PENTEGRA, LTD. AND NAPILI
 
    Pentegra, Ltd. and Napili had a working capital deficit of $4,000 at June
30, 1997. Management believes that cash flows from operations will be adequate
to fund these companies' operations through the date the Pentegra/Napili
Transaction is completed.
 
ACCOUNTING TREATMENT
 
    The acquisition of the assets and assumption of certain liabilities of the
Founding Affiliated Practices pursuant to the Acquisitions will be accounted for
by the Company at the transferors' historical cost basis. The Common Stock being
issued in the Acquisitions will be recorded at the historical net book value of
the net assets being acquired, as reflected on the books of the Founding
Affiliated Practices. Cash consideration paid in the Acquisitions will be
treated for accounting purposes as a dividend to the Founding Affiliated
Practices and their owners.
 
RECENT PRONOUNCEMENTS
 
    In February 1997, the Financial Accounting Standards Board ("FASB") issued
Statement of Financial Accounting Standards ("SFAS") No. 128, "Earnings Per
Share." SFAS No. 128 specifies the computation, presentation, and disclosure
requirements of earnings per share and supersedes Accounting Principles Board
Opinion No. 15, "Earnings Per Share." SFAS No. 128 requires a dual presentation
of basic and diluted earnings per share. Basic earnings per share, which
excludes the impact of common stock equivalents, replaces primary earnings per
share. Diluted earnings per share, which utilizes the average market price per
share as opposed to the greater of the average market price per share or ending
market price per share when applying the treasury stock method in determining
common stock equivalents, replaces fully diluted earnings per share. SFAS No.
128 is effective for both interim and annual periods ending after December 15,
1997.
 
    The Emerging Issues Task Force of the FASB is currently evaluating certain
matters relating to the physician practice management industry, which the
Company expects will include a review of accounting for affiliated dental
practices. The Company is unable to predict the impact, if any, that this review
may have on the Company's financial statement presentation.
 
                                       22
<PAGE>
                                    BUSINESS
 
OVERVIEW
 
    Pentegra Dental Group, Inc. was recently formed to provide management,
administrative, development and other services to dental practices throughout
the United States. The Company's approach to dental practice management (the
"Pentegra Dental Program") was developed by Dr. Omer K. Reed, the Chairman of
the Board of the Company, and is designed to increase revenues and lower costs
at Affiliated Practices while freeing the practicing dentists to focus on the
delivery of high-quality care. The Company will earn management service fees
under long-term service agreements with Affiliated Practices (the "Service
Agreements"). In most cases, service fees payable to the Company under the
Service Agreements represent a share of the Affiliated Practices' operating
profits, thereby providing incentives for the Company and the Affiliated
Practices to work together to maximize practice profitability. The Company will
also seek to grow by acquiring and affiliating with additional dental practices.
 
    The Company has entered into definitive acquisition agreements and Service
Agreements with 51 Founding Affiliated Practices, which include 78 dentists and
63 dental offices located in 18 states. The Founding Affiliated Practices are
primarily general dentistry practices, but also include specialists such as
periodontists, pedodontists and oral surgeons. For the year ended December 31,
1996, total patient revenue for the Founding Affiliated Practices was
approximately $39.2 million and pro forma revenue for the Company would have
been approximately $27.1 million. In addition, the Company will acquire from Dr.
Reed the assets of a consulting firm, Pentegra, Ltd., which was founded in 1988,
and a seminar company, Napili, which was founded in 1963. The clinical,
administrative and marketing training developed and provided by these companies
to practicing dentists and their teams are the foundation for the Pentegra
Dental Program. After completion of the Offering, the Pentegra Dental Program
will be available exclusively to Affiliated Practices.
 
    The Company believes it has several advantages that would lead dental
practices to seek to affiliate with the Company: (i) the Company and the
Founding Affiliated Practices focus on providing traditional fee-for-service
dental care, which the Company believes is highly profitable and professionally
rewarding for dentists; (ii) the Pentegra Dental Program offers proven
techniques to increase practice profitability substantially; (iii) both the
Company and the Affiliated Practices will have incentives to work together to
maximize practice profitability; and (iv) affiliation with the Company will
enable Affiliated Practices to benefit from professional management techniques,
economies of scale in administrative and other functions, and enable affiliated
dentists to dedicate more time and effort towards the growth of their practices.
 
INDUSTRY
 
    The Health Care Finance Administration ("HCFA") estimates that in 1995,
approximately $43 billion was spent in the United States on dental services.
HCFA projects annual dental expenditures to increase at an average annual rate
of six percent per year, reaching $79 billion in the year 2005. The Company
believes there are several factors that will drive growth in dental expenditures
in the United States, including (i) the aging of the population, which increases
the demand for restorative and maintenance procedures (E.G., crowns, bridges and
implants) that tend to be more profitable than routine procedures (E.G.,
cleanings and fillings); (ii) the increasing attention to dental health and
wellness, with greater emphasis on personal appearance, which increases the
demand for general dentistry services and, in particular, cosmetic dental
procedures (E.G., porcelain bonding and bleaching), which also tend to be more
profitable than routine procedures; and (iii) the increasing percentage of the
population covered by some form of dental insurance, which, according to the
National Center for Health Statistics, makes patients more likely to seek
treatment from their dentist.
 
    Payments for dental services are made either directly by patients or by
third-party payors. Third-party payors primarily consist of private insurance
indemnity plans, preferred provider organizations ("PPOs") and dental health
maintenance organizations and other managed care programs ("DHMOs"). Private
 
                                       23
<PAGE>
indemnity insurance companies typically pay for a patient's dental care on a
fee-for-service basis, while PPO plans pay on a discounted fee-for-service
basis. DHMO plans typically pay on a per-person, per-month basis regardless of
the level of service provided to the patient. In the case of both PPOs and
DHMOs, patients typically must pay on a fee-for-service basis for any services
outside the limited range of dental procedures covered. According to the 1993
Foster Higgins National Survey of Employer-Sponsored Health Plans, approximately
78% of the plans surveyed pay for dental services on a fee-for-service basis,
while approximately 22% of the plans surveyed are PPO and DHMO plans (I.E.,
discounted fee-for-service payments or capitated payments). According to HCFA,
only approximately four percent of all payments for dental care are made under
the Medicaid program (which provides limited coverage for indigent children),
with no coverage being provided by the Medicare program.
 
    In a 1995 survey, the ADA reported that there were approximately 153,000
active dentists in the United States, approximately 88% of whom were practicing
either alone or with only one other dentist. In recent years, dentists have
begun to consolidate into affiliated groups and with practice management
organizations. Dentists who affiliate with practice management companies gain
several benefits, such as opportunities to achieve economies of scale, to
implement cost management techniques and to gain access to capital for new
equipment and other working capital needs.
 
BUSINESS STRATEGY
 
    The Company's objective is to become a leader in providing dental practice
management services. In order to achieve this objective, the Company's strategy
includes the following elements:
 
    - FOCUS ON TRADITIONAL FEE-FOR-SERVICE DENTAL CARE. According to the 1993
      Foster Higgens National Survey of Employer-Sponsored Health Plans,
      approximately 78% of the plans surveyed pay for dental services on a
      fee-for-service basis. The Company believes that fee-for-service care is
      high-quality, highly profitable and professionally rewarding for dentists.
 
    - INCREASE PRODUCTIVITY AND PROFITABILITY OF AFFILIATED PRACTICES BY
      IMPLEMENTING THE PENTEGRA DENTAL PROGRAM. The Pentegra Dental Program
      involves proven techniques to increase revenues and lower costs, as well
      as methods to make the dentist and his or her practice team more efficient
      in the delivery of dental care.
 
    - LOWER OPERATING COSTS BY ACHIEVING ECONOMIES OF SCALE. The Company
      believes that, as a result of its size and resources, it will be able to
      provide Affiliated Practices with certain management functions at lower
      cost than if the Affiliated Practices were to perform the services by
      themselves.
 
    - FREE THE DENTIST TO FOCUS MORE TIME ON THE PRACTICE OF DENTISTRY. The
      Company will relieve practicing dentists of administrative tasks. The
      Company believes management and administrative support will substantially
      reduce the amount of time affiliated dentists are required to spend on
      administrative matters and enable them to dedicate more time and effort
      toward the growth of their professional practices.
 
    - GROW THROUGH ACQUISITIONS AND AFFILIATIONS OF ADDITIONAL DENTAL PRACTICES.
      The Company will generally seek to affiliate with practices that have high
      potential for future growth, particularly through implementation of the
      Pentegra Dental Program, an established reputation for high-quality care
      and a strategic fit either in an existing market or as an entry into a new
      market.
 
SERVICES AND OPERATIONS
 
    THE PENTEGRA DENTAL PROGRAM
 
    The Company intends to implement the Pentegra Dental Program at each
Affiliated Practice. The Pentegra Dental Program was developed by Dr. Reed
through Pentegra, Ltd. and Napili. Napili was founded in 1963 and has conducted
technical and management seminars for several thousand practicing
 
                                       24
<PAGE>
dentists, including many who have attended these seminars more than once. As a
result of demand by attendees of Napili seminars, Dr. Reed established Pentegra,
Ltd. in 1988 to provide hands-on training and services to small groups of
dentists. Shortly after completion of the Offering, Pentegra, Ltd. and Napili
will no longer operate independently and their services will be available
exclusively to Affiliated Practices.
 
    The Company focuses on traditional fee-for-service practices, which generate
revenue by providing care to their established patient bases and typically grow
through patient referrals. The Company believes that the average dentist has the
skills necessary to diagnose and provide appropriate care to patients, but many
of them have not developed the skills needed to obtain patient acceptances of,
and commitments to, the treatment plans. As a result, a significant amount of
recommended care may not be completed, with correspondingly lower revenues to
the dentists.
 
    The Pentegra Dental Program is based on a cooperative approach that
emphasizes patient wellness and involves the dentist and his or her patient
mutually agreeing on a program to achieve and maintain optimal oral health. The
Company will provide training and support to assist affiliated dentists and
their teams to communicate effectively with each patient regarding the type and
value of care needed, obtain the patient's commitment to a treatment plan and
then implement the agreed-upon treatment plan. The Company and the Affiliated
Practices will monitor the patients' treatment plans by using active recall
systems to ensure that scheduled treatments are actually performed. The Pentegra
Dental Program stresses quality of care and personal attention, both of which
the Company believes are highly valued by patients and help achieve treatment
plan acceptance. The Company intends to develop and maintain a statistical
database for each Affiliated Practice to define and measure the standard of care
and assure that the desired standards are being achieved.
 
    The Pentegra Dental Program also analyzes and rationalizes fee structures to
increase profitability. The Company believes that typical fee structures do not
accurately reflect all direct and indirect costs of various procedures. In order
to address this, the Company will use time-related cost allocation models to
recommend fee structures for Affiliated Practices that are designed to reflect
the true cost of procedures and, hence, increase profitability.
 
    In addition, the Pentegra Dental Program focuses on increasing the
productivity of the dentist and his or her team. The Company will seek to
increase hygienic use and production at the Affiliated Practices. A number of
dental services can be provided by hygiene teams with only limited involvement
by the dentist, thereby enabling dentists to use their extra time on higher
margin procedures requiring greater expertise and skill. The Company will also
monitor patient scheduling and time spent with patients in order to increase
utilization of existing dental equipment and personnel.
 
    MANAGEMENT INFORMATION SYSTEMS
 
    The Company will utilize an integrated server-based information system to
track important operational and financial data related to each Affiliated
Practice's performance. The Company's management information system will
interface with the practice management software currently being used by the
Founding Affiliated Practices and enable the Company to collect from each
Affiliated Practice, on a daily basis, data on patients seen, number and type of
procedures performed, billing and collections, and other data needed for
financial reporting and analysis. The Company will then compile and analyze this
data in order to promote efficiency and assure high quality care at Affiliated
Practices, as well as maintain necessary financial controls. The Company's
management information system will also enable the Company to centralize certain
functions, such as purchasing, accounts payable and payroll processing, and
achieve economies of scale.
 
    The Company is currently in the process of refining and testing its
management information system at beta sites at selected Founding Affiliated
Practices. The Company expects its integrated system to be operational at all of
the Founding Affiliated Practices at the closing of the Offering, and will be
installed promptly at all future Affiliated Practices as they affiliate with the
Company. Any significant delay or
 
                                       25
<PAGE>
increase in expense associated with the conversion and integration of management
information systems used by Affiliated Practices could have a material adverse
effect on the successful implementation of the Company's expansion strategy. In
addition, the Company will have some systems that will remain decentralized for
at least some time, such as cash collections. Accordingly, the Company will rely
on local staff for certain functions, including upstreaming cash to the Company.
 
    OTHER PRACTICE MANAGEMENT SERVICES
 
    The Company will provide other practice management services to the
Affiliated Practices, including staffing, education and training, employee
benefits administration, advertising and other marketing support and, where
permitted by applicable law, dentist recruiting. This management and
administrative support should substantially reduce the amount of time affiliated
dentists are required to spend on administrative matters and enable them to
dedicate more time and effort toward the growth of their professional practices.
In addition, the Company expects to be able to negotiate on behalf of Affiliated
Practices discounts on, among other things, dental and office supplies, health
and malpractice insurance and equipment.
 
    In certain markets, the Company may assist Affiliated Practices in securing
reimbursement contracts from third-party payors. In those situations, the
Company's role will be to negotiate and administer the contracts on behalf of
the Affiliated Practices.
 
LOCATIONS
 
    Upon consummation of the Acquisitions, the Company will provide management
services to the practices and offices in the following states:
 
<TABLE>
<CAPTION>
                                                                                  NUMBER OF
                                                                             --------------------
                                   STATE                                      OFFICES   DENTISTS
- ---------------------------------------------------------------------------  ---------  ---------
<S>                                                                          <C>        <C>
Alaska.....................................................................          1          1
Arizona....................................................................          6          7
California.................................................................          1          1
Colorado...................................................................          4          6
Florida....................................................................          3          3
Louisiana..................................................................          1          1
Maine......................................................................          1          1
Maryland...................................................................          1          1
Massachusetts..............................................................          1          2
Michigan...................................................................          1          1
Nebraska...................................................................          2          2
New Mexico.................................................................          1          2
New York...................................................................          4          4
North Dakota...............................................................          1          1
Oregon.....................................................................          1          1
Texas......................................................................         31         41
Washington.................................................................          2          2
Wisconsin..................................................................          1          1
                                                                             ---------  ---------
  Totals...................................................................         63         78
                                                                             ---------  ---------
                                                                             ---------  ---------
</TABLE>
 
    All office facilities are leased, in some cases from the owner of the
Affiliated Practice using the facility. Pursuant to its Service Agreements, the
Company will provide all the office facilities (which it intends to lease),
dental equipment and furnishings to the Affiliated Practices.
 
                                       26
<PAGE>
SUMMARY OF TERMS OF ACQUISITIONS
 
    The aggregate consideration that will be paid by Pentegra to acquire the
Founding Affiliated Practices consists of (i) approximately $6.5 million in cash
and (ii) approximately 2,062,511 shares of Common Stock. The number of shares to
be outstanding on completion of the Offering will decrease if the initial public
offering price is higher, and will increase if the initial public offering price
is lower, than $    per share. The Company will also assume certain indebtedness
of the Founding Affiliated Practices of approximately $2.9 million. Pentegra
will acquire substantially all the assets necessary to operate the business of
each of the Founding Affiliated Practices, except as limited by applicable
restrictions on the corporate practice of dentistry. See Note 4 of Notes to the
Pentegra Dental Group, Inc. Financial Statements and "--Government Regulation."
 
    The consideration being paid by Pentegra for each Founding Affiliated
Practice was determined by arm's-length negotiations between Pentegra and a
representative of that Founding Affiliated Practice. Pentegra used valuation
methods to negotiate the consideration being paid to each of the Founding
Affiliated Practices, including the practice wholly owned by Dr. Reed, which
methods were based upon the Founding Affiliated Practice's gross revenue, net
income and growth potential.
 
    The closing of each Acquisition is subject to customary conditions. These
conditions include, among others, the accuracy, on the closing date of the
Acquisitions, of the representations and warranties made by the Founding
Affiliated Practices and their stockholders and by the Company; the performance
of each of their respective covenants included in the agreements relating to the
Acquisitions; and the absence of any material adverse change in the results of
operations, financial condition or business of each Founding Affiliated
Practice.
 
    Any Founding Affiliated Practice's acquisition agreement may be terminated,
under certain circumstances, prior to the closing of the Offering: (i) by the
mutual consent of Pentegra and the Founding Affiliated Practice; (ii) if the
Offering and the acquisition of that Founding Affiliated Practice are not closed
by March 31, 1998; or (iii) by the Founding Affiliated Practice or Pentegra if a
material breach or default is made by the other party in the observance or in
the due and timely performance of any of the covenants, agreements or conditions
contained in the acquisition agreement.
 
SERVICE AGREEMENTS
 
    Upon consummation of the Acquisitions, the Company will enter into a Service
Agreement with each Founding Affiliated Practice under which the Company will
become the exclusive manager and administrator of non-dental services relating
to the operation of the Founding Affiliated Practices. The following is intended
to be a brief summary of the typical form of Service Agreement the Company will
enter into with each Founding Affiliated Practice. The Company expects to enter
into similar agreements with Affiliated Practices in the future. The actual
terms of the various Service Agreements vary from the description below on a
case-by-case basis, depending on negotiations with the individual Founding
Affiliated Practices and the requirements of applicable law and governmental
regulations.
 
    The service fees (the "Service Fees") payable to the Company by the Founding
Affiliated Practices under the Service Agreements vary based on the fair market
value, as determined in arm's-length negotiations, of the nature and amount of
services provided. Such fees, together with reimbursement for operating and
non-operating expenses of the Founding Affiliated Practice to be paid by the
Company pursuant to the Service Agreement, are payable monthly, and the Service
Fees consist of various combinations of the following: (i) a percentage (ranging
from 35% to 40%) of the difference between the sum of revenues related to dental
services less operating expenses associated with the Founding Affiliated
Practices; (ii) a percentage (16%) of the revenues relating to dental services,
not to exceed a percentage (35%) of the difference between the revenues related
to dental services and operating expenses associated with the Founding
Affiliated Practices; or (iii) the greater of (a) a percentage (not to exceed
35%) of the difference between the revenues related to dental services and
operating expenses associated with the Founding Affiliated Practices or (b) a
specified fixed fee. In addition, with respect to four of the Founding
 
                                       27
<PAGE>
Affiliated Practices, the service fees are based on flat fees that are subject
to renegotiation or adjustment on an annual basis. See "Management's Discussion
and Analysis of Financial Condition and Results of Operations--Overview."
 
    Pursuant to each Service Agreement, the Company will, among other things,
(i) act as the exclusive manager and administrator of non-dental services
relating to the operation of the Founding Affiliated Practice, subject to
matters reserved to the Founding Affiliated Practice, (ii) administer the
billing of patients, insurance companies and other third-party payors and
collect on behalf of the Founding Affiliated Practice the fees for professional
dental and other services and products rendered or sold by the Founding
Affiliated Practice, (iii) provide, as necessary, clerical, accounting, payroll,
legal, bookkeeping and computer services and personnel, information management,
printing, postage and duplication services and transcribing services, (iv)
supervise and maintain custody of substantially all files and records (other
than patient records if prohibited by applicable law), (v) provide facilities,
equipment and furnishings for the Founding Affiliated Practice, (vi) order and
purchase inventory and supplies as reasonably requested by the Founding
Affiliated Practice and (vii) implement, in consultation with the Founding
Affiliated Practice, public relations or advertising programs.
 
    Pursuant to each Service Agreement, the respective Founding Affiliated
Practice retains the decision-making power and responsibility for, among other
things, (i) hiring, compensating and supervising dentist employees and other
licensed dental professionals, (ii) ensuring that dentists have the required
licenses, credentials, approvals and other certifications appropriate to the
performance of their duties and (iii) complying with federal and state laws,
regulations and ethical standards applicable to the practice of dentistry. In
addition, the Founding Affiliated Practice will be exclusively in control of all
aspects of the practice of dentistry and the provision of dental services.
 
    Each Service Agreement is for an initial term of 40 years, with automatic
extensions (unless specified notice is given) of five years. The Service
Agreement may be terminated by either party if the other party (i) files a
petition in bankruptcy or other similar events occur or (ii) defaults on the
performance of a material duty or obligation, which default continues for a
specified term after notice. In addition, the Service Agreement may be
terminated by the Company (i) if the Founding Affiliated Practice or a dental
employee engages in conduct for which the dental employee's license to practice
dentistry is revoked or suspended or is the subject of any restrictions or
limitations by any governmental authority to such an extent that he, she or it
cannot engage in the practice of dentistry or (ii) upon a breach by the dentist
of the employment agreement between the Founding Affiliated Practice and the
dentist.
 
    The Service Agreement requires the Founding Affiliated Practice to enforce
the employment agreements between the Founding Affiliated Practice and the
dentists associated with the Founding Affiliated Practice (the "Dentist
Employment Agreements"). If the Founding Affiliated Practice does not enforce
such employment agreement, the Company may, at its option, require the Founding
Affiliated Practice to either assign (i) such employment agreement or (ii) the
rights to enforce the covenant not to compete set forth therein to the Company
or its designee.
 
    The Founding Affiliated Practice is responsible for obtaining professional
liability insurance for the employees of the Founding Affiliated Practice and
the Company is responsible for obtaining general liability and property
insurance for the Founding Affiliated Practice.
 
    Upon termination of a Service Agreement, the Founding Affiliated Practice
has the option to purchase and assume, and the Company has the option to require
the Founding Affiliated Practice to purchase and assume, the assets and
liabilities related to the Founding Affiliated Practice at the fair market value
thereof, except in certain circumstances where the Founding Affiliated Practice
or the Company, as applicable, was in breach of the Service Agreement.
 
                                       28
<PAGE>
DENTIST AGREEMENT
 
    Each dentist who has an ownership interest in a Founding Affiliated Practice
will enter into a dentist agreement, which provides the Company such dentist's
guarantee (for the initial five years and for so long thereafter as he or she
owns any interest in the Founding Affiliated Practice) of the Founding
Affiliated Practice's obligations under the applicable Service Agreement. In
addition, such agreement provides that the dentist may not sell his or her
ownership interest during the dentist's five-year employment term without the
Company's prior written consent. In the event of a default under the Service
Agreement by the Founding Affiliated Practice, the dentist agreement provides
that the Company may, at its option, require the Founding Affiliated Practice to
convey its patient records and the capital stock of the Founding Affiliated
Practice to the Company's authorized designee.
 
DENTIST EMPLOYMENT AGREEMENTS
 
    Upon consummation of the Acquisitions, each Founding Affiliated Practice
will be a party to a Dentist Employment Agreement with each dentist owner,
including the dentist who owns such Founding Affiliated Practice. The Dentist
Employment Agreements with dentists who will receive cash or Common Stock in the
Acquisitions are for an initial term of five years and continue thereafter on a
year-to-year basis until terminated under the terms of the agreements. The
Dentist Employment Agreements provide that the employee dentist will not compete
with the Affiliated Practice during the term of the agreement and following the
termination of the agreement for a term of two years in a specified geographical
area. If employment of a dentist is terminated during the initial five-year term
without the consent of Pentegra for any reason other than the dentist's death or
disability or the occurrence of certain events outside the dentist's control, an
event of default will occur under the Service Agreement. In certain
jurisdictions a covenant not to compete may not be enforceable under certain
circumstances. See "Risk Factors-- Reliance on Affiliated Practices and
Dentists."
 
COMPETITION
 
    The Company anticipates facing substantial competition from other companies
to establish affiliations with additional dental practices. The Company is aware
of several practice management companies focused on dentistry and several
companies pursuing similar strategies in other segments of the health care
industry (including dentistry). Certain of these competitors have greater
financial and other resources than the Company and have operations in areas
where the Company may seek to expand in the future. Additional companies with
similar objectives are expected to enter the Company's markets and compete with
the Company. In addition, the business of providing dental services is highly
competitive in each market in which the Company will operate. Each of the
Founding Affiliated Practices faces local competition from other dentists and
providers of specialty dental services (pedodontists, orthodontists, oral
surgeons, etc.), some of whom have more established practices. There can be no
assurance that the Company or the Affiliated Practices will be able to compete
effectively with their respective competitors, that additional competitors will
not enter their markets or that additional competition will not have a material
adverse effect on the Company.
 
EMPLOYEES
 
    As of September 30, 1997, the Company employed three persons. Upon
consummation of the Acquisitions, the Company expects that it will have
approximately 390 employees, of which approximately 15 will be employed at the
Company's headquarters or at the Company's regional office in Houston, Texas,
and approximately 375 will be employed at the locations of the Founding
Affiliated Practices. None of the Company's employees are represented by
collective bargaining agreements. The Company considers its employee relations
to be good.
 
                                       29
<PAGE>
LITIGATION AND INSURANCE
 
    The Affiliated Practices provide dental services to the public and are
exposed to the risk of professional liability and other claims. In recent years,
dentists have become subject to an increasing number of lawsuits alleging
malpractice and related legal theories. Some of these lawsuits involve large
claims and significant defense costs. Any suits or claims involving the Company
or dentists at the Affiliated Practices, if successful, could result in
substantial damage awards to the claimants that may exceed the limits of any
applicable insurance coverage. Although the Company does not control the
practice of dentistry by the Affiliated Practices, it could be asserted that the
Company should be held liable for malpractice of a dentist employed by an
Affiliated Practice. Each Affiliated Practice has undertaken to comply with all
applicable regulations and legal requirements, and the Company maintains
liability insurance for itself. There can be no assurance, however, that a
future claim or claims will not be successful or, if successful, will not exceed
the limits of available insurance coverage or that such coverage will continue
to be available at acceptable costs.
 
    The Company is currently not a party to any claims, suits or complaints. The
Company may become subject to certain pending claims as the result of successor
liability in connection with the Acquisitions; however, it is management's
opinion that the ultimate resolution of those claims will not have a material
adverse effect on the financial position, operating results or cash flows of the
Company.
 
    The Founding Affiliated Practices have maintained professional liability
insurance coverage, generally on a claims-made basis. Such insurance provides
coverage for claims asserted when the policy is in effect regardless of when the
events that caused the claim occurred. The Company intends to acquire similar
coverage after the closing of the Acquisitions, since the Company, as a result
of the Acquisitions, will in some cases succeed to the liabilities of the
Founding Affiliated Practices. Therefore, claims may be asserted against the
Company after the closing of Acquisitions for events that occurred prior to such
closing.
 
GOVERNMENT REGULATION
 
    The dental services industry is regulated extensively at both the state and
federal levels. Regulatory oversight includes, but is not limited to,
considerations of fee-splitting, corporate practice of dentistry and state
insurance regulation.
 
    CORPORATE PRACTICE OF DENTISTRY AND FEE-SPLITTING RESTRICTIONS
 
    The laws of many states prohibit business corporations such as the Company
from engaging in the practice of dentistry or employing dentists to practice
dentistry and prohibit dentists from splitting fees with non-dentists. The
specific restrictions against the corporate practice of dentistry, as well as
the interpretation of those restrictions by state regulatory authorities, vary
from state to state. The restrictions are generally designed to prohibit a
non-dental entity (such as the Company) from controlling the professional assets
of a dental practice (such as patient records and payor contracts), employing
dentists to practice dentistry (or, in certain states, employing dental
hygienists or dental assistants) or controlling the content of a dentist's
advertising or professional practice. The laws of many states also prohibit
dentists from sharing professional fees with non-dental entities. State dental
boards do not generally interpret these prohibitions as preventing a non-dental
entity from owning non-professional assets used by a dentist in a dental
practice or providing management services to a dentist for a fee provided
certain conditions are met. The Company believes that its operations will not
contravene any restriction on the corporate practice of dentistry and that the
management fees it intends to charge for its services are consistent with the
laws and regulations of the jurisdictions in which it will operate concerning
fee-splitting. There can be no assurance, however, that a review of the
Company's business relationships by courts or regulatory authorities will not
result in determinations that could prohibit or otherwise adversely affect the
operations of the Company or that the regulatory environment will not change,
requiring the Company to reorganize or restrict its existing or future
operations. The laws regarding fee-splitting and the corporate practice of
 
                                       30
<PAGE>
dentistry and their interpretation are enforced by regulatory authorities with
broad discretion. There can be no assurance that the legality of the Company's
business or its relationship with the Affiliated Practices will not be
successfully challenged or that the enforceability of the provisions of any
Service Agreement will not be limited.
 
    FRAUD AND ABUSE LAWS AND RESTRICTIONS ON REFERRALS AND SELF-REFERRALS
 
    Many states in which the Founding Affiliated Practices are located have
fraud and abuse laws that, in many cases, apply to referrals for items or
services reimbursable by any insurer, not just by Medicare and Medicaid. A
number of states, including many of the states in which the Founding Affiliated
Practices are located, also impose significant penalties for submitting false
claims for dental services. In addition, most states have laws prohibiting
paying or receiving any remuneration, direct or indirect, that is intended to
induce referrals for health care items or services, including dental items and
services. Many states in which the Founding Affiliated Practices are located
either prohibit or require disclosure of self-referral arrangements and impose
penalties for the violation of these laws. Many states, including Alaska,
Florida and Maine, limit the ability of a person other than a licensed dentist
to own or control equipment or offices used in a dental practice. Some of these
states allow leasing of equipment and office space to a dental practice under a
bona fide lease, if the equipment and office remain under the control of the
dentist.
 
    ADVERTISING RESTRICTIONS AND LIMITATIONS ON DELEGATION
 
    Some states prohibit the advertising of dental services under a trade or
corporate name. Some states, including Texas, require all advertisements to be
in the name of the dentist. A number of states also regulate the content of
advertisements of dental services and the use of promotional gift items. In
addition, many states impose limits on the tasks that may be delegated by
dentists to hygienists and dental assistants. These laws and their
interpretations vary from state to state and are enforced by the courts and by
regulatory authorities with broad discretion.
 
    INSURANCE REGULATION
 
    There are certain state insurance regulatory risks associated with the
Company's anticipated role in negotiating and administering managed care
contracts on behalf of the Affiliated Practices. The application of state
insurance laws to third-party payor arrangements, other than fee-for-service
arrangements, is an unsettled area of law with little guidance available. State
insurance laws are subject to broad interpretation by regulators and, in some
states, state insurance regulators may determine that the Company or the
Affiliated Practices are engaged in the business of insurance because of the
capitation features (or similar features under which an Affiliated Practice
assumes financial risk) that may be contained in managed care contracts. In the
event that the Company or an Affiliated Practice is determined to be engaged in
the business of insurance, the Company or the Affiliated Practice could be
required to either seek licensure as an insurance company or change the form of
its relationships with the third-party payors. There can be no assurance that
the Company's operations would not be adversely affected if the Company or any
of the Affiliated Practices were to become subject to state insurance
regulations.
 
    HEALTH CARE REFORM
 
    The United States Congress has considered various types of health care
reform, including comprehensive revisions to the current health care system. It
is uncertain what legislative proposals, if any, will be adopted in the future
or what actions federal or state legislatures or third-party payors may take in
anticipation of or in response to any health care reform proposals or
legislation. There can be no assurance that applicable federal or state laws and
regulations will not change or be interpreted in the future either to restrict
or adversely affect the Company's relationships with dentists or the operation
of Affiliated Practices.
 
                                       31
<PAGE>
                                   MANAGEMENT
 
DIRECTORS AND EXECUTIVE OFFICERS
 
    As required by the Company's Bylaws, after the closing of the Offering, a
majority of the Company's Board of Directors will be dentists who are affiliated
with Affiliated Practices. The following table sets forth certain information
concerning the Company's directors, the nine persons nominated to become
directors on the closing of the Offering and the executive officers of the
Company (ages are as of September 30, 1997):
 
<TABLE>
<CAPTION>
                 NAME                       AGE                                 POSITION
- ---------------------------------------     ---     ----------------------------------------------------------------
<S>                                      <C>        <C>
Omer K. Reed, D.D.S....................         65  Chairman of the Board and Clinical Officer
Gary S. Glatter........................         44  President, Chief Executive Officer and Director
Sam H. Carr(1).........................         41  Senior Vice President, Chief Financial Officer and Director
James L. Dunn, Jr.(2)..................         35  Senior Vice President, Chief Development Officer and Director
John G. Thayer.........................         43  Senior Vice President and Chief Operating Officer
Kimberlee K. Rozman....................         37  Senior Vice President, General Counsel and Secretary
Ronnie L. Andress, D.D.S.(1)...........         42  Director
J. Michael Casas.......................         35  Director
James H. Clarke, Jr., D.D.S.(1)........         49  Director
Ronald E. Geistfeld, D.D.S.(1).........         63  Director
Allen M. Gelwick(2)....................         38  Director
Mack E. Greder, D.D.S.(1)..............         53  Director
Roger Allen Kay, D.D.S.(1).............         52  Director
Gerald F. Mahoney(1)...................         53  Director
Anthony P. Maris(1)....................         63  Director
George M. Siegel.......................         59  Director
Ronald M. Yaros, D.D.S.(1).............         51  Director
</TABLE>
 
- ---------
 
(1) Appointment as a director will become effective upon the closing of the
    Offering.
 
(2) Each of Mr. Gelwick and Mr. Dunn intends to resign as a director upon the
    closing of the Offering.
 
OMER K. REED, D.D.S. has served as the Company's Chairman of the Board and
Clinical Officer since May 1997. He founded Pentegra, Ltd. in 1988 and Napili in
1963, and is a practicing dentist with one of the Founding Affiliated Practices.
Since inception, Pentegra, Ltd. and Napili have provided comprehensive
management and consulting services to dental practices around the nation. In
1965, Dr. Reed founded the CeramDent Laboratory and he has maintained a private
dental practice in Phoenix since 1959. He has held associate professorships in
the Departments of Ecological Dentistry at the University of North Carolina,
Chapel Hill (1978-1988) and the University of Minnesota (1982-1991), and has
lectured extensively around the world on various subjects related to the
practice of dentistry. Dr. Reed also serves on the Board of Directors of Century
Companies of America, CUNA Mutual Insurance Group and the American Volunteer
Medical Team. Pursuant to the terms of his employment agreement with the
Company, the Company has undertaken to use its best efforts to elect Dr. Reed as
a director of the Company.
 
GARY S. GLATTER has served as the Company's President, Chief Executive Officer
and a Director since May 1997. Prior thereto, he was President and Chief
Operating Officer of H.E.R.C. Products Incorporated, a public company engaged in
manufacturing and selling chemical rehabilitation products for water
distribution systems. From 1989 until 1993, Mr. Glatter served as President and
Chief Executive Officer of Classic Properties, a New York-based real estate
company. Pursuant to the terms of his employment agreement with the Company, the
Company has undertaken to use its best efforts to elect Mr. Glatter as a
director of the Company.
 
                                       32
<PAGE>
SAM H. CARR has served as the Company's Senior Vice President and Chief
Financial Officer since September 1997. From September 1996 until August of
1997, Mr. Carr served as Vice President--Finance and Corporate Development of
Ankle & Foot Centers of America, LLP, a podiatry practice management company.
From February 1995 until July 1996, Mr. Carr was a Senior Manager with Arthur
Andersen LLP. Prior thereto, Mr. Carr was Chief Financial Officer of
Columbia/HCA's Bellaire Hospital in Houston, Texas from January 1994 until
January 1995, and Vice President of Finance of St. Vincent Hospital in Santa Fe,
New Mexico from 1990 until 1994. Mr. Carr is a certified public accountant.
Pursuant to the terms of his employment agreement with the Company, the Company
has undertaken to use its best efforts to elect Mr. Carr as a director of the
Company.
 
JAMES L. DUNN, JR. has served as the Company's Senior Vice President and Chief
Development Officer since July 1997 and as a Director since March 1997. Since
1987, Mr. Dunn has been an attorney practicing as a sole practitioner in
Houston, Texas. His legal practice is focused on providing services to members
of the dental community. He has been actively involved in the valuation or sale
of dental practices over the past five years. In 1995, Mr. Dunn was appointed to
the Texas Medical Disclosure Panel, the body that determines which dental
procedures require informed consent. Mr. Dunn is a member of the American
Society of Pension Actuaries and is a certified public accountant.
 
JOHN G. THAYER has served as the Company's Senior Vice President and Chief
Operating Officer since March 1997. Prior thereto, Mr. Thayer was Managing
General Partner of England and Company, a public accounting firm he co-founded
in 1983, which provides accounting and practice management counseling to health
care professionals in the Texas Gulf Coast area. In 1994, he co-founded Medtek
Management, Inc., a privately held management information company specializing
in the data processing needs of health care professionals.
 
KIMBERLEE K. ROZMAN has served as the Company's Senior Vice President, General
Counsel and Secretary since July 1997. Prior thereto, she served as Vice
President, Senior Counsel (January to July 1997) and Associate General Counsel
(1996) of Physicians Resource Group, Inc., a public company engaged in providing
ophthalmic practice management services. From 1990 to 1996, Ms. Rozman was an
associate with the law firm of Jackson Walker L.L.P.
 
RONNIE L. ANDRESS, D.D.S. has been engaged in the private practice of dentistry
in Freeport, Texas since 1995 and is President of Ronnie L. Andress, D.D.S.,
Inc., one of the Founding Affiliated Practices. Prior to 1995, Dr. Andress was
engaged in the private practice of dentistry in Houston, Texas for over 12
years.
 
J. MICHAEL CASAS has served as a Vice President of Physicians Resource Group,
Inc. since June 1995. From October 1991 to June 1995, Mr. Casas served as
Administrator of Texas Eye Institute Assoc., a comprehensive eye care provider
in the greater Houston, Texas area.
 
JAMES H. CLARKE, JR., D.D.S. has been engaged in the private practice of
dentistry in Houston, Texas since 1974 and is President of James H. Clark, Jr.,
D.D.S., Inc., one of the Founding Affiliated Practices.
 
RONALD E. GEISTFELD, D.D.S. is Professor Emeritus at the University of Minnesota
School of Dentistry, where he has taught since 1982. Dr. Geistfeld also
maintained a part-time dental practice in Minnesota from 1973 to 1992. He is a
member of the Minnesota Dental Association, the Minneapolis District Dental
Society, the American College of Dentists, the Academy of Operative Dentistry,
the Minnesota Academy of Restorative Dentistry and the Minnesota Academy for
Gnathological Research.
 
ALLEN M. GELWICK has served as a Senior Vice President of Alexander & Alexander,
an insurance brokerage firm, since 1995 and previously was a member of Alexander
& Alexander's Chairman's Council. From 1992 until 1994, he served as Senior Vice
President for Minet Insurance Services. Prior thereto, Mr. Gelwick served as
Senior Vice President for Frank B. Hall & Co. and was an underwriter for Chubb
Insurance.
 
MACK E. GREDER, D.D.S. has been engaged in the private practice of dentistry in
Omaha, Nebraska since 1970 and is President of Mack E. Greder, D.D.S., P.C., one
of the Founding Affiliated Practices.
 
                                       33
<PAGE>
ROGER ALLEN KAY, D.D.S. has been engaged in the private practice of dentistry in
Farmington and Livermore Falls, Maine since 1972 and is President of Roger Allen
Kay, D.D.S., P.A., one of the Founding Affiliated Practices. He is a member of
the Maine Dental Association, the American Dental Association, the Academy of
General Dentistry and the American Society of Dentistry for Children.
 
GERALD F. MAHONEY has been Chairman of the Board and Chief Executive Officer of
Mail-Well, Inc., a public company engaged in printing and envelope manufacturing
with over 50 printing offices throughout the United States, since 1994. Prior
thereto, he served as Chairman of the Board, President and Chief Executive
Officer of Pavey Envelope beginning in 1991. Mr. Mahoney is a certified public
accountant.
 
ANTHONY P. MARIS is a consultant to health care businesses. From 1987 to 1996,
Mr. Maris was a Director, Vice President, Chief Financial Officer and Treasurer
of Roberts Pharmaceutical Corporation, a public company engaged in
pharmaceuticals manufacturing. Prior thereto, Mr. Maris was a Director and Chief
Financial Officer of Hoffmann--La Roche Inc., a pharmaceutical manufacturer.
 
GEORGE M. SIEGEL was President and Chief Executive Officer of Parcelway Courier
Systems, Inc., a publicly traded messenger and courier business with operations
throughout North America, from 1990 to 1997. In 1993, Mr. Siegel co-founded U.S.
Delivery Systems, a public company engaged in consolidating local messenger and
delivery companies. Prior thereto, Mr. Siegel founded and was the President and
Chief Executive Officer of U.S. Messenger & Delivery Service and Direct Dispatch
Corporation, two messenger and courier service companies that he sold to Mayne
Nickless Courier System, Inc.
 
RONALD M. YAROS, D.D.S. has been engaged in the private practice of dentistry in
Aurora, Colorado since 1973 and is President of Ronald M. Yaros, D.D.S., P.C.,
one of the Founding Affiliated Practices. He is a member of the American Dental
Association, the Colorado Dental Association, the Metro Denver Dental Society
and the Academy of General Dentistry.
 
BOARD OF DIRECTORS
 
    The Board of Directors will be divided into three classes with at least four
directors in each class, with the term of one class expiring at the annual
meeting of stockholders in each year, commencing 1998. At each annual meeting of
stockholders, directors of the class the term of which then expires will be
elected by the holders of the Common Stock to succeed those directors whose
terms are expiring. The Company's Bylaws provide that a majority of the members
of the Board of Directors must be licensed to practice dentistry and affiliated
with one of the Affiliated Practices.
 
    On closing of the Offering, there will be three committees of the Board:
Audit, Compensation and Executive. The initial members of the Audit Committee
will be Messrs. Maris and Mahoney. The initial members of the Compensation
Committee will be Messrs. Maris, Siegel and Casas. The initial members of the
Executive Committee will be Dr. Reed and Messrs. Glatter and Siegel. The members
of the Audit and Compensation Committees will not be employees of the Company.
 
    Directors who are employees of the Company or a Founding Affiliated Practice
do not receive additional compensation for serving as directors. Each director
who is not an employee of the Company or a Founding Affiliated Practice will
receive a fee of $1,500 for attendance at each Board of Directors meeting and
$750 for each committee meeting (unless held on the same day as a Board of
Directors meeting), and an initial grant of nonqualified options to purchase
10,000 shares of Common Stock (except with respect to Messrs. Casas and Siegel,
who have waived their right to receive those options). Directors who are not
employees of the Company will also receive annual grants of nonqualified options
to purchase 5,000 shares on the first business day of the month following the
date on which each annual meeting of the Company's stockholders is held. See
"--1997 Stock Compensation Plan." All directors of the Company are reimbursed
for out-of-pocket expenses incurred in attending meetings of the Board of
Directors or committees thereof, and for other expenses incurred in their
capacity as directors of the Company.
 
                                       34
<PAGE>
EXECUTIVE COMPENSATION
 
    Pentegra has conducted no operations to date other than in connection with
the Offering and the Acquisitions. The Company anticipates that during 1997 its
most highly compensated executive officers will be Dr. Reed and Messrs. Glatter,
Carr, Dunn and Thayer (the "Named Executive Officers"), each of whom has entered
or will enter into an employment agreement providing for an annual salary of
$175,000, $175,000, $175,000, $125,000 and $125,000, respectively. See
"--Employment Agreements."
 
    In addition to base salary, Messrs. Glatter, Carr, Dunn and Thayer through
their employment agreements are eligible for certain bonuses described under
"--Employment Agreements" and performance bonuses based on the achievement of
specific financial targets of the Company. Performance bonuses will not exceed
50% of base salary for each of those officers, except Mr. Glatter (whose bonus
will not exceed 200% of his base salary).
 
    In September 1997, the Company granted options to purchase 333,333 shares,
66,667 shares, 33,333 shares and 33,333 shares of Common Stock to Messrs.
Glatter, Carr, Dunn and Thayer, respectively, under the Company's 1997 Stock
Compensation Plan, exercisable at the initial public offering price per share
set forth on the cover page of this Prospectus. Of the options granted to Mr.
Glatter, options to acquire 166,667 shares vest on the first anniversary of the
date of this Prospectus, options to acquire 66,667 shares vest on each of the
second and third anniversaries of the date of this Prospectus, and options to
acquire 33,333 shares vest on the fourth anniversary of the date of this
Prospectus. The options granted to Messrs. Carr, Dunn and Thayer vest annually
in 20% increments beginning on the first anniversary of the date of this
Prospectus. See "--1997 Stock Compensation Plan."
 
EMPLOYMENT AGREEMENTS
 
    The Company has entered into employment agreements with Dr. Reed, Messrs.
Glatter, Carr, Dunn and Thayer and Ms. Rozman. The following summary of these
agreements, which will be effective on the closing of the Acquisitions and the
Offering, does not purport to be complete and is qualified by reference to such
agreements, copies of which have been filed as exhibits to the Registration
Statement of which this Prospectus is a part. Each of these agreements provides
for an annual base salary in an amount not less than the initial specified
amount and entitles the employee to participate in all the Company's
compensation plans (as defined) in which other executive officers of the Company
participate. Dr. Reed's employment agreement provides that he will serve as the
Company's clinical officer and has a three-year term commencing on completion of
the Offering. Dr. Reed's base salary under the employment agreement will be
$175,000 per year, or as increased from time to time by the Board of Directors,
and provides for bonus payments aggregating $1,250,000 payable by the Company in
increments of $10,000 on closing of each future dental practice affiliation
subsequent to the Offering until the bonus has been paid in full, provided that
the bonus must be paid in full by the third anniversary of the date of this
Prospectus. Mr. Glatter's employment agreement provides that he will serve as
the Company's chief executive officer and president and has at least a four-year
term commencing on July 1, 1997. Mr. Glatter's base salary under the employment
agreement will be as follows: (i) $175,000 per year for the period from July 1,
1997 through June 30, 1998, (ii) $200,000 per year for the period from July 1,
1998 through June 30, 1999, (iii) $225,000 per year for the period from July 1,
1999 through June 30, 2000 and (iv) $250,000 per year from July 1, 2000
thereafter or as increased from time-to-time by the Board of Directors. Each of
the agreements for Messrs. Carr, Dunn and Thayer and Ms. Rozman has a continuous
five-year term with an annual base salary of $175,000 for Mr. Carr and of
$125,000 for each of the other officers, and is subject to the right of the
Company to terminate the employee's employment at any time. If the employee's
employment is terminated by the Company without cause (as defined), Messrs.
Carr, Dunn and Thayer and Ms. Rozman will be entitled to a payment equal to
either 12 months' or six months' salary depending on whether such employee has
relocated to Phoenix, Arizona, and Dr. Reed and Mr. Glatter will be entitled to
a payment equal to the salary payable over the remaining term of their
respective agreements. Mr. Thayer will also receive a $25,000 bonus on the
closing of the Offering and a $25,000 bonus on the first anniversary of that
 
                                       35
<PAGE>
closing. Each of the foregoing agreements also contain a covenant limiting
competition with the Company for one year following termination of employment.
 
    Each Founding Affiliated Practice will enter into an employment agreement
with its dentist employees. See "Business--Dentist Employment Agreements."
 
1997 STOCK COMPENSATION PLAN
 
    In August 1997, the Board of Directors adopted, and the stockholders of the
Company approved, the 1997 Stock Compensation Plan. The purpose of the 1997
Stock Compensation Plan is to provide the Company's employees, non-employee
directors and advisors and employees and directors of Affiliated Practices with
additional incentives by increasing their proprietary interest in the Company.
The aggregate number of shares of Common Stock with respect to which options and
awards may be granted under the 1997 Stock Compensation Plan may not exceed
2,000,000 shares.
 
    The 1997 Stock Compensation Plan provides for the grant of incentive stock
options ("ISOs"), as defined in Section 422 of the Code, nonqualified stock
options (collectively with ISOs, "Options") and restricted stock awards
("Awards"). Following the consummation of the Offering, the 1997 Stock
Compensation Plan will be administered by the Compensation Committee of the
Board of Directors, which will be comprised of not less than two members of the
Board of Directors (the "Committee"). Prior to the consummation of the Offering,
the 1997 Stock Compensation Plan had been administered by the Company's full
Board of Directors. The Committee has, subject to the terms of the 1997 Stock
Compensation Plan, the sole authority to grant Options and Awards under the 1997
Stock Compensation Plan, to interpret the 1997 Stock Compensation Plan and to
make all other determinations necessary or advisable for the administration of
the 1997 Stock Compensation Plan.
 
    All of the Company's employees, non-employee directors and advisors and
employees and directors of Affiliated Practices are eligible to receive
nonqualified stock options and Awards under the 1997 Stock Compensation Plan,
but only employees of the Company are eligible to receive ISOs. Options will be
exercisable during the period specified in each option agreement and will
generally be exercisable in installments pursuant to a vesting schedule to be
designated by the Committee. Notwithstanding the provisions of any option
agreement, options will become immediately exercisable in the event of certain
events including certain merger or consolidation transactions and changes in
control of the Company. No Option will remain exercisable later than ten years
after the date of grant (or five years from the date of grant in the case of
ISOs granted to holders of more than 10% of the outstanding Common Stock). An
Award grants the recipient the right to receive a specified number of shares of
Common Stock, which shall become vested over a period of time, not exceeding 10
years, specified by the Committee. Restricted stock transferred to a recipient
shall be forfeited upon the termination of the recipient's employment or service
other than for death, permanent disability or retirement unless the Committee,
in its sole discretion, waives the restrictions for all or any part of an Award.
 
    The exercise price for ISOs granted under the 1997 Stock Compensation Plan
may be no less than the fair market value of the Common Stock on the date of
grant (or 110% of the fair market value in the case of ISOs granted to employees
owning more than 10% of the Common Stock). The exercise price for nonqualified
options granted under the 1997 Stock Compensation Plan may not be less than the
fair market value of the Common Stock on the date of grant.
 
    Payment upon exercise of an Option may be made in cash or by check, by means
of a "cashless exercise" involving the sale of shares by, or a loan from, a
broker, or, in the discretion of the Committee, by delivery of shares of Common
Stock, by payment of the par value of the shares subject to the Option plus a
promissory note for the balance of the exercise price or in any other form of
valid consideration permitted by the Committee.
 
                                       36
<PAGE>
    There are generally no federal income tax consequences upon the grant of an
Option under the 1997 Stock Compensation Plan. Upon exercise of a nonqualified
option, the optionee generally will recognize ordinary income in the amount
equal to the difference between the fair market value of the shares at the time
of exercise and the exercise price, and the Company is generally entitled to a
corresponding deduction. When an optionee sells shares issued upon the exercise
of a nonqualified stock option, the optionee realizes short-term, mid-term or
long-term capital gain or loss, depending on the length of the holding period.
If the optionee holds the shares for more than 18 months, the capital gain or
loss will be long-term capital gain or loss. If the optionee holds the shares
for more than one year but not more than 18 months, the capital gain or loss
will be mid-term capital gain or loss. Otherwise, the capital gain or loss will
be short-term capital gain or loss. The Company is not entitled to any deduction
in connection with such sale.
 
    An optionee will not be subject to federal income taxation upon the exercise
of ISOs granted under the 1997 Stock Compensation Plan, and the Company will not
be entitled to a federal income tax deduction by reason of such exercise. A sale
of shares of Common Stock acquired upon exercise of an ISO that does not occur
within one year after the date of exercise or within two years after the date of
grant of the option generally will result in the recognition of long-term or
mid-term capital gain or loss by the optionee in an amount equal to the
difference between the amount realized on the sale and the exercise price, and
the Company is not entitled to any deduction in connection therewith. If a sale
of shares of Common Stock acquired upon exercise of an ISO occurs within one
year from the date of exercise of the option or within two years from the date
of the option grant (a "disqualifying disposition"), the optionee generally will
recognize ordinary income equal to the lesser of (i) the excess of the fair
market value of the shares on the date of exercise of the options over the
exercise price or (ii) the excess of the amount realized on the sale of the
shares over the exercise price. Any amount realized on a disqualifying
disposition in excess of the amount treated as ordinary income will be long-term
or short-term capital gain, depending upon the length of time the shares were
held. The Company generally will be entitled to a tax deduction on a
disqualifying disposition corresponding to the ordinary income recognized by the
optionee.
 
    For alternative minimum tax purposes, the difference between the fair market
value, on the date of exercise, of Common Stock purchased upon the exercise of
an ISO, and the exercise price increases alternative minimum taxable income.
Additional rules apply if an optionee makes a disqualifying disposition of the
Common Stock.
 
    There are generally no federal income tax consequences upon the grant of an
Award, except as described below regarding a section 83(b) election. Upon the
expiration of the restrictions on shares of Common Stock subject to an Award,
except as provided in the next sentence, the recipient of the Award will
recognize taxable ordinary income equal to the fair market value of the shares
at the time of such expiration. If the recipient of an Award elects, pursuant to
section 83(b) of the Code, within 30 days of the date shares of restricted stock
are considered transferred to the recipient, to recognize taxable ordinary
income at the time of the transfer in an amount equal to the fair market value
of such shares, no additional income will be recognized upon the lapse of the
restrictions on the shares and no deduction will be allowed to the recipient if
the shares are subsequently forfeited. A recipient who makes such an election
under section 83(b) is required to give notice of such election to the Company
immediately after making the election, and the Company will be entitled to a
deduction equal to the amount of income recognized by the recipient. For capital
gains purposes the recipient's holding period for the shares received will begin
at the time taxable income is recognized under these rules and his or her basis
in the shares will be the amount of ordinary income recognized.
 
    The Company anticipates that upon the consummation of the Offering it will
have (i) outstanding options to purchase a total of approximately 646,667 shares
of Common Stock under the 1997 Stock Compensation Plan and (ii) options to
purchase 1,353,333 additional shares available for grant under the 1997 Stock
Compensation Plan.
 
                                       37
<PAGE>
                              CERTAIN TRANSACTIONS
 
ORGANIZATION OF THE COMPANY
 
    In connection with the formation of the Company, in February 1997, PII
issued common stock to J. Michael Casas (200,000 shares), James L. Dunn, Jr.
(100,000 shares), John G. Thayer (66,667 shares) and Allen M. Gelwick (66,667
shares), at a purchase price per share of $0.01. In May 1997, PII issued Class B
Preferred to J. Michael Casas (66,667 shares) and James L. Dunn, Jr. (33,334
shares), at a purchase price per share of $0.01. In May 1997, PII issued Common
Stock to George M. Siegel (300,000 shares), Dr. Reed (150,000 shares), Gary S.
Glatter (100,000 shares), Kelly W. Reed (150,000 shares) and Kimberlee K. Rozman
(33,333 shares), at a purchase price per share of $0.01. In September 1997 and
October 1997, PII purchased 46,667 shares and 20,000 shares, respectively, of
its common stock from George M. Siegel at a purchase price per share of $0.01.
In September 1997, the Company issued 66,667 shares of common stock to Sam H.
Carr at a purchase price of $0.01 per share.
 
    In connection with the raising of $1,450,000 by PII in order to fund a
portion of the expenses for the Offering and the Acquisitions, in June 1997, PII
issued capital stock to Dr. Reed (37,500 shares of Class B Preferred and 7,500
shares of common stock), Gary S. Glatter (37,500 shares of Class B Preferred and
7,500 shares of common stock), George M. Siegel (37,500 of Class B Preferred and
7,500 shares of common stock), Mack E. Greder, D.D.S. (25,000 shares of Class B
Preferred and 5,000 shares of common stock), Roger Allen Kay, D.D.S. (25,000
shares of Class B Preferred and 5,000 shares of common stock), Bruce A. Kanehl,
D.D.S. (25,000 shares of Class B Preferred and 5,000 shares of common stock),
Brian K. Kniff, D.D.S. (25,000 shares of Class B Preferred and 5,000 shares of
common stock), Richard W. Mains, Jr., D.M.D., RBM Trust (25,000 shares of Class
B Preferred and 5,000 shares of common stock), James W. Medlock, D.D.S. (25,000
shares of Class B Preferred and 5,000 shares of common stock), Thomas L.
Mullooly, D.D.S. (25,000 shares of Class B Preferred and 5,000 shares of common
stock), Richard H. Fettig, D.D.S. (25,000 shares of Class B Preferred and 5,000
shares of common stock), Marvin V. Cavallino, D.D.S. (50,000 shares of Class B
Preferred and 10,000 shares of common stock), Alan H. Gerbholz, D.D.S. (25,000
shares of Class B Preferred and 5,000 shares of common stock), Victor H.
Burdick, D.D.S. (25,000 shares of Class B Preferred and 5,000 shares of common
stock), Steve Anderson, D.D.S. (25,000 shares of Class B Preferred and 5,000
shares of common stock) and James P. Allen, D.D.S. (25,000 shares of Class B
Preferred and 5,000 shares of common stock), at a purchase price per share of
$1.00 for the Class B Preferred and of $0.01 for the common stock.
 
    In September 1997, (i) each owner of shares of common stock of PII agreed to
exchange those shares for shares of Common Stock on a one-for-one basis and (ii)
each of Dr. Reed and Messrs. Glatter, Dunn, Casas and Siegel agreed to sell to
PII all shares of Class B Preferred he owns at a price per share equal to the
subscription price he paid to PII for those shares, which transactions will
occur concurrently with the closing of the Offering and the Acquisitions. In
addition, immediately after the completion of the repurchases described in the
foregoing sentence, all outstanding shares of Class A Preferred and Class B
Preferred will be redeemed by PII at a redemption price of $2.00 per share from
the proceeds of the Offering.
 
    The Company has entered into an agreement with Pentegra, Ltd., Napili and
Dr. Reed to purchase substantially all of the tangible and intangible assets of
Pentegra, Ltd. and Napili for $200,000 upon completion of the Offering.
 
    Since February 1997, the Company has occupied and had access to the
facilities, equipment and staff of James L. Dunn & Assoc., Inc, an affiliate of
James L. Dunn, Jr. Beginning June 1, 1997, the Company agreed to compensate
James L. Dunn & Assoc., Inc. for use of and access to its office facilities,
equipment and staff at the rate of $10,000 per month. James L. Dunn & Assoc.,
Inc. will provide the Company a monthly invoice and obtain reimbursement for
those expenses from the Company. The Company believes that the compensation to
be paid to James L. Dunn & Assoc., Inc. represents the fair market value of the
services that will be provided to the Company. Subsequent to the Offering, this
arrangement may continue on a month-to-month basis at the discretion of the
Company.
 
                                       38
<PAGE>
    The Company has leased a portion of the office facilities, equipment and
staff of Pentegra, Ltd., which is wholly owned by Dr. Reed, beginning June 1,
1997. The Company has agreed to compensate Pentegra, Ltd. for use of and access
to its office facilities, equipment and staff at the rate of $11,000 per month.
Pentegra, Ltd. will provide the Company a monthly invoice and obtain
reimbursement for those expenses from the Company. The Company believes that the
compensation to be paid to Pentegra, Ltd. represents the fair market value of
the goods and services that will be provided to the Company. This lease will be
assumed by the Company in the Pentegra/Napili Transaction.
 
    The following table provides certain information concerning the
Acquisitions:
 
<TABLE>
<CAPTION>
                                                                                           CONSIDERATION TO BE
                                                                                                 RECEIVED
                                                                                         ------------------------
                                                                          ASSETS TO BE   NUMBER OF
                     FOUNDING AFFILIATED PRACTICES                       CONTRIBUTED(1)  SHARES(2)       CASH
- -----------------------------------------------------------------------  --------------  ----------  ------------
<S>                                                                      <C>             <C>         <C>
James P. Allen, D.D.S..................................................   $    (12,845)      42,554  $    138,301
Anderson Dental Group, Inc.............................................       (194,444)     112,615       366,000
Ronnie L. Andress, D.D.S., Inc.........................................        (62,257)      66,562       216,326
Kenneth W. Baker, D.D.S., P.C..........................................        (44,262)      45,384       147,496
Victor H. Burdick, D.D.S., P.C.........................................         (4,344)      35,116       114,126
Marvin V. Cavallino, D.D.S., A Professional Corporation................        (32,086)      44,138       143,447
James H. Clarke, Jr., D.D.S., Inc......................................          2,448       40,008       130,027
Henry F. Cuttler, D.D.S................................................        (22,323)      24,372        79,211
Edward T. Dougherty, Jr., D.D.S., P.A..................................         13,284       71,640       232,830
Family Dental Center, P.A..............................................         61,038       67,966       220,889
Richard H. Fettig, D.D.S...............................................         (5,548)      29,940        97,303
Alan H. Gerbholz, D.D.S., P.C..........................................         15,154       28,139        91,451
Michael J. Gershtenson, D.D.S., P.C....................................         67,846       30,174        98,067
Mack E. Greder, D.D.S., P.C............................................          5,706       44,056       143,183
Salvatore Guarnieri, D.D.S.............................................         48,447       30,860       100,295
Kent Hamilton, D.D.S...................................................        (39,219)      73,311       238,262
David R. Henderson, D.D.S..............................................          6,202       26,187        85,109
Stephen Hwang, D.D.S...................................................         14,198       23,056        74,931
Jackson Dental Partnership.............................................         79,736       33,405       --
Bruce A. Kanehl, D.D.S.................................................        (22,532)      45,347       147,378
Roger Allen Kay, D.D.S., P.A...........................................         15,067       44,313       144,017
Patrick T. Kelly, D.D.S., P.C..........................................          8,133       12,003        39,008
Brian K. Kniff, D.D.S., P.C............................................        158,300       70,060       227,696
Lakeview Dental, P.C...................................................        (15,217)      31,440       102,180
Donald W. Lanning, D.D.S...............................................         39,167       19,128        40,000
David A. Little, D.D.S.................................................       (141,340)      32,566       105,840
Susan Lunson, D.D.S....................................................       (117,218)      18,232        59,253
Richard W. Mains, Jr., D.M.D., P.C.....................................         86,785       51,739       168,152
James M. McDonough, D.D.S., P.C........................................        (12,524)      38,900       126,424
James W. Medlock, D.D.S., P.A..........................................        (14,784)      55,366       179,940
James Randy Mellard, D.D.S., M.S., P.C.................................        (16,915)       9,842        31,986
Mary B. Mellard, D.D.S., P.C...........................................       (102,614)      39,558       128,562
TL Mullooly, D.D.S., Inc...............................................         48,812       29,821        96,918
Byron L. Novosad, D.D.S., Inc..........................................          6,594       30,745        99,923
Randy O'Brien, D.D.S., Inc.............................................         (6,226)      23,634        76,811
Terrence C. O'Keefe, D.D.S.............................................         15,416       18,692        81,000
Harold A. Pebbles, Jr., D.D.S., P.C....................................        --            36,813       119,641
Jimmy F. Pinner, D.D.S.................................................          6,664       11,267        36,619
Omer K. Reed, D.D.S....................................................         17,806       24,075       --
Richard Reinitz, D.D.S., P.C...........................................       (129,725)      97,227       315,988
Greg Richards, D.D.S...................................................         (9,806)      12,711        41,305
Richard N. Smith, D.M.D., P.C..........................................        (60,599)      62,501       203,129
John N. Stellpflug, D.D.S..............................................        (16,671)      30,771       100,006
Jack Stephens, D.D.S...................................................         54,409       78,930       256,523
Y. Paul Suzuki, D.D.S., P.C............................................         17,036       29,498        95,870
Donald F. Tamborello, D.D.S............................................          6,243       35,280       114,660
</TABLE>
 
                                                               (TABLE CONTINUED)
 
                                       39
<PAGE>
<TABLE>
<CAPTION>
                                                                                           CONSIDERATION TO BE
                                                                                                 RECEIVED
                                                                                         ------------------------
                                                                          ASSETS TO BE   NUMBER OF
                     FOUNDING AFFILIATED PRACTICES                       CONTRIBUTED(1)  SHARES(2)       CASH
- -----------------------------------------------------------------------  --------------  ----------  ------------
<S>                                                                      <C>             <C>         <C>
Helena Thomas, D.D.S...................................................        (17,949)      18,943        61,566
Louis J. Thornley, D.D.S., P.C.........................................         25,843       27,381        88,988
S. Victor Uhrenholdt, D.D.S., P.C......................................         (7,441)      38,990       126,718
Scott Van Zandt, D.D.S.................................................          6,066       26,230        85,248
Ronald M. Yaros, D.D.S., P.C...........................................        187,368       91,025       295,830
                                                                         --------------  ----------  ------------
                                                                          $    (95,121)   2,062,511  $  6,514,433
                                                                         --------------  ----------  ------------
                                                                         --------------  ----------  ------------
</TABLE>
 
- ---------
(1) Net assets to be contributed reflects the historical book value of the
    assets of each practice, including their patient receivable balance, net of
    prepayments and liabilities of the practice to be assumed or repaid by the
    Company. These nonmonetary assets are reflected at historical cost in
    accordance with SAB No. 48. All monetary assets are recorded at fair value,
    which is approximated by the historical costs recorded by the practices.
 
(2) Assumes an initial public offering price of $    per share. The actual
    number of shares to be issued as consideration for the Acquisitions may be
    higher or lower depending on the actual initial public offering price per
    share.
 
COMPANY POLICY
 
    It is anticipated that future transactions with affiliates of the Company
will be minimal, will be approved by a majority of the disinterested members of
the Board of Directors and will be made on terms no less favorable to the
Company than could be obtained from unaffiliated third parties. The Company does
not intend to incur any further indebtedness to, or make any loans to, any of
its executive officers, directors or other affiliates.
 
                                       40
<PAGE>
                SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS
                                 AND MANAGEMENT
 
    The following table shows, as of September 30, 1997 and immediately after
giving effect to the closing of the Acquisitions and the Offering, the then
"beneficial ownership" of the Common Stock of (i) each director and person
nominated to become a director on closing of the Offering, (ii) each executive
officer, (iii) all executive officers and directors of the Company as a group
and (iv) each person who owns more than 5% of the outstanding Common Stock. The
table assumes none of such persons intend to acquire shares in the Offering.
 
<TABLE>
<CAPTION>
                                                                         SHARES BENEFICIALLY      SHARES BENEFICIALLY
                                                                                OWNED                    OWNED
                                                                           BEFORE OFFERING         AFTER OFFERING(1)
                                                                       -----------------------  -----------------------
                                                                         NUMBER      PERCENT      NUMBER      PERCENT
                                                                       ----------  -----------  ----------  -----------
<S>                                                                    <C>         <C>          <C>         <C>
Omer K. Reed, D.D.S..................................................     157,500         9.0%     181,575         2.9%
Gary S. Glatter......................................................     107,500         6.1%     107,500         1.7%
Sam H. Carr..........................................................      66,667         3.8%      66,667         1.1%
James L. Dunn, Jr....................................................      93,333         5.3%      93,333         1.5%
John G. Thayer.......................................................      66,667         3.8%      66,667         1.1%
Kimberlee K. Rozman..................................................      33,333         1.9%      33,333           *
Ronnie L. Andress, D.D.S.............................................           0           *       66,652           *
J. Michael Casas.....................................................     200,000        11.4%     200,000         3.2%
James H. Clarke, Jr., D.D.S..........................................           0           *       40,008           *
Ronald E. Geistfeld, D.D.S...........................................           0           *            0           *
Allen M. Gelwick.....................................................      66,667         3.8%      66,667         1.1%
Mack E. Greder, D.D.S................................................       5,000           *       49,056           *
Roger Allen Kay, D.D.S...............................................       5,000           *       49,313           *
Gerald F. Mahoney....................................................           0           *            0           *
Anthony P. Maris.....................................................           0           *            0           *
George M. Siegel.....................................................     240,833        13.7%     240,833         3.8%
Ronald M. Yaros, D.D.S...............................................           0           *       91,025         1.6%
Kelly W. Reed(2).....................................................     150,000         8.5%     150,000         2.4%
All executive officers and directors as a group (17 persons).........   1,042,500        59.3%   1,352,629        21.4%
</TABLE>
 
- ---------
 
*   less than 1%.
 
(1) Shares shown in the above table do not include shares that could be acquired
    upon exercise of currently outstanding stock options which do not vest
    within 60 days of the date of this Prospectus. The number of shares to be
    issued in connection with the Acquisitions assumes an initial public
    offering price of $    per share. The actual number of such shares may be
    higher or lower depending on the actual initial public offering price per
    share.
 
(2) Kelly W. Reed, Vice President of Operations of the Company, is the son of
    Omer K. Reed, D.D.S.
 
                                       41
<PAGE>
                          DESCRIPTION OF CAPITAL STOCK
 
    The Company's authorized capital stock consists of 40,000,000 shares of
Common Stock, par value $.001 per share, and 10,000,000 shares of preferred
stock, par value $.001 per share ("Preferred Stock"). At September 30, 1997,
1,756,667 shares of Common Stock were issued and outstanding. The following
summary is qualified in its entirety by reference to the Certificate of
Incorporation, which is included as an exhibit to the Registration Statement of
which this Prospectus is a part.
 
COMMON STOCK
 
    The Common Stock possesses ordinary voting rights for the election of
directors and in respect of other corporate matters, and each share has one
vote. The Common Stock affords no cumulative voting rights, and the holders of a
majority of the shares voting for the election of directors can elect all the
directors if they choose to do so. The Common Stock carries no preemptive
rights, is not convertible, redeemable or assessable. The holders of Common
Stock are entitled to dividends in such amounts and at such times as may be
declared by the Board of Directors out of funds legally available therefor. See
"Dividend Policy" for information regarding the Company's dividend policy.
 
PREFERRED STOCK
 
    The Preferred Stock may be issued from time to time by the Board of
Directors as shares of one or more series. Subject to the provisions of the
Certificate of Incorporation and limitations prescribed by law, the Board of
Directors is expressly authorized to adopt resolutions to issue the shares, to
fix the number of shares and to change the number of shares constituting any
series and to provide for or change the voting powers, designations, preferences
and relative, participating, optional, exchange or other special rights,
qualifications, limitations or restrictions thereof, including dividend rights
(including whether dividends are cumulative), dividend rates, terms of
redemption (including sinking fund provisions), redemption prices, conversion
rights and liquidation preferences of the shares constituting any class or
series of the Preferred Stock, in each case without any further action or vote
by the holders of Common Stock.
 
    Although the Company has no present intention to issue shares of Preferred
Stock, the issuance of shares of Preferred Stock, or the issuance of rights to
purchase such shares, could be used to discourage an unsolicited acquisition
proposal. For example, the issuance of a series of Preferred Stock might impede
a business combination by including class voting rights that would enable the
holders to block such a transaction; or such issuance might facilitate a
business combination by including voting rights that would provide a required
percentage vote of the stockholders. In addition, under certain circumstances,
the issuance of Preferred Stock could adversely affect the voting power of the
holders of the Common Stock. Although the Board of Directors is required to make
any determination to issue such stock based on its judgment as to the best
interests of the stockholders of the Company, the Board of Directors could act
in a manner that would discourage an acquisition attempt or other transaction
that some or a majority of the stockholders might believe to be in their best
interests or in which stockholders might receive a premium for their stock over
the then-market price of such stock. The Board of Directors does not at present
intend to seek stockholder approval prior to any issuance of currently
authorized stock, unless otherwise required by law or the rules of any market on
which the Company's securities are traded.
 
STATUTORY BUSINESS COMBINATION PROVISION
 
    The Company is a Delaware corporation and is subject to Section 203 of the
DGCL. In general, Section 203 prevents an "interested stockholder" (defined
generally as a person owning 15% or more of a corporation's outstanding voting
stock) from engaging in a "business combination" (as defined) with a Delaware
corporation for three years following the date such person became an interested
stockholder unless (i) before such person became an interested stockholder, the
board of directors of the corporation approved the transaction in which the
interested stockholder became an interested stockholder or
 
                                       42
<PAGE>
approved the business combination, (ii) upon consummation of the transaction
that resulted in the interested stockholder's becoming an interested
stockholder, the interested stockholder owned at least 85% of the voting stock
of the corporation outstanding at the time the transaction commenced (excluding
stock held by directors who are also officers of the corporation and by employee
stock plans that do not provide employees with the rights to determine
confidentially whether shares held subject to the plan will be tendered in a
tender or exchange offer) or (iii) following the transaction in which such
person became an interested stockholder, the business combination was approved
by the board of directors of the corporation and authorized at a meeting of
stockholders by the affirmative vote of the holders of 66 2/3% of the
outstanding voting stock of the corporation not owned by the interested
stockholder. Under Section 203, the restrictions described above also do not
apply to certain business combinations proposed by an interested stockholder
following the announcement or notification of one of certain extraordinary
transactions involving the corporation and a person who had not been an
interested stockholder during the previous three years or who became an
interested stockholder with the approval of a majority of the corporation's
directors, if such extraordinary transaction is approved or not opposed by a
majority of the directors who were directors prior to any person becoming an
interested stockholder during the previous three years or were recommended for
election or elected to succeed such directors by a majority of such directors.
 
OTHER MATTERS
 
    Delaware law authorizes corporations to limit or eliminate the personal
liability of directors to corporations and their stockholders for monetary
damages for breach of a director's fiduciary duty of care. The duty of care
requires that, when acting on behalf of the corporation, directors must exercise
an informed business judgment based on all material information reasonably
available to them. Absent the limitations authorized by Delaware law, directors
are accountable to corporations and their stockholders for monetary damages for
conduct constituting gross negligence in the exercise of their duty of care.
Delaware law enables corporations to limit available relief to equitable
remedies such as injunction or rescission. The Certificate of Incorporation
limits the liability of directors of the Company to the Company or its
stockholders to the fullest extent permitted by Delaware law. Specifically,
directors of the Company will not be personally liable for monetary damages for
breach of a director's fiduciary duty as a director, except for liability for
unlawful payments of dividends or unlawful stock repurchases or redemptions as
provided in Section 174 of the DGCL.
 
    The inclusion of this provision in the Certificate of Incorporation may have
the effect of reducing the likelihood of derivative litigation against directors
and may discourage or deter stockholders or management from bringing a lawsuit
against directors for breach of their duty of care, even though such an action,
if successful, might otherwise have benefitted the Company and its stockholders.
The Company's Bylaws provide indemnification to the Company's officers and
directors and certain other persons with respect to certain matters.
 
    The Bylaws provide that, from and after the first date that the Company has
received funding from the sale of capital stock in an initial public offering,
the stockholders may act only at an annual or special meeting of stockholders
and may not act by written consent. The Bylaws provide that special meetings of
the stockholders can be called only by the Chairman of the Board, the Chief
Executive Officer, the President or the Board of Directors.
 
    The Certificate of Incorporation provides that the Board of Directors shall
consist of three classes of directors serving for staggered terms. As a result,
it is currently contemplated that approximately one-third of the Company's Board
of Directors will be elected each year. The classified board provision could
prevent a party who acquires control of a majority of the outstanding voting
stock of the Company from obtaining control of the Board of Directors until the
second annual stockholders' meeting following the date the acquirer obtains the
controlling interest. In addition, the Company's Bylaws provide that a
 
                                       43
<PAGE>
majority of the members of the Board of Directors must be licensed dentists
affiliated with one of the Affiliated Practices. See "Management--Directors and
Executive Officers."
 
    The Certificate of Incorporation provides that the number of directors shall
be as specified in the Bylaws. The Bylaws provide that the number of directors
shall be determined by the Board of Directors from time to time, but shall be at
least one and not more than nineteen. It also provides that directors may be
removed only for cause, and then only by the affirmative vote of the holders of
at least a majority of all outstanding voting stock entitled to vote. This
provision, in conjunction with the provision of the Bylaws authorizing the Board
of Directors to fill vacant directorships, will prevent stockholders from
removing incumbent directors without cause and filling the resulting vacancies
with their own nominees.
 
STOCKHOLDER PROPOSALS
 
    The Company's Bylaws contain provisions (i) requiring that advance notice be
delivered to the Company of any business to be brought by a stockholder before
an annual meeting of stockholders and (ii) establishing certain procedures to be
followed by stockholders in nominating persons for election to the Board of
Directors. Generally, such advance notice provisions provide that written notice
must be given to the Secretary of the Company by a stockholder (i) in the event
of business to be brought by a stockholder before an annual meeting, not less
than 90 days nor more than 180 days prior to the earlier of the date of the
meeting or the corresponding date on which the immediately preceding annual
meeting of stockholders was held, and (ii) in the event of nominations of
persons for election to the Board of Directors by any stockholder, (a) with
respect to an election to be held at the annual meeting of stockholders, not
less than 90 days nor more than 180 days prior to the earlier of the date of the
meeting or the corresponding date on which the immediately preceding annual
meeting of stockholders was held, and (b) with respect to an election to be held
at a special meeting of stockholders for the election of directors, not later
than the close of business on the 10th day following the day on which notice of
the date of the special meeting was mailed to stockholders or public disclosure
of the date of the special meeting was made, whichever first occurs. Such notice
must set forth specific information regarding such stockholder and such business
or director nominee, as described in the Company's Bylaws. The foregoing summary
is qualified in its entirety by reference to the Company's Bylaws, which are
included as an exhibit to the Registration Statement of which this Prospectus is
a part.
 
TRANSFER AGENT AND REGISTRAR
 
    The transfer agent and registrar for the Common Stock is Continental Stock
Transfer & Trust Company.
 
                        SHARES ELIGIBLE FOR FUTURE SALE
 
    Upon consummation of the Acquisitions and the Offering, the Company will
have outstanding 6,319,178 shares of Common Stock (6,694,178 if the
Underwriters' over-allotment option is exercised in full) of which the 2,500,000
shares sold in the Offering (2,875,000 if the Underwriters' over-allotment
option is exercised in full) will be freely tradable without restriction or
further registration under the Securities Act, except for those held by
"affiliates" (as defined in the Securities Act) of the Company, which shares
will be subject to the resale limitations of Rule 144 under the Securities Act.
The remaining 3,819,178 shares of Common Stock are deemed "restricted
securities" under Rule 144 in that they were originally issued and sold by the
Company in private transactions in reliance upon exemptions under the Securities
Act, and may be publicly sold only if registered under the Securities Act or
sold in accordance with an applicable exemption from registration, such as those
provided by Rule 144 promulgated under the Securities Act as described below.
 
    In general, under Rule 144 as currently in effect, if a minimum of one year
has elapsed since the later of the date of acquisition of restricted securities
from the issuer or from an affiliate of the issuer, the
 
                                       44
<PAGE>
acquirer or subsequent holder would be entitled to sell within any three-month
period a number of those shares that does not exceed the greater of one percent
of the number of shares of such class of stock then outstanding or the average
weekly trading volume of the shares of such class of stock during the four
calendar weeks preceding the filing of a Form 144 with respect to such sale.
Sales under Rule 144 are also subject to certain manner of sale provisions and
notice requirements and to the availability of current public information about
the issuer. In addition, if a period of at least two years has elapsed since the
later of the date of acquisition of restricted securities from the issuer or
from any affiliate of the issuer, and the acquirer or subsequent holder thereof
is deemed not to have been an affiliate of the issuer of such restricted
securities at any time during the 90 days preceding a sale, such person would be
entitled to sell such restricted securities under Rule 144(k) without regard to
the requirements described above. Rule 144 does not require the same person to
have held the securities for the applicable periods. The foregoing summary of
Rule 144 is not intended to be a complete description thereof. The Commission
has proposed certain amendments to Rule 144 that would, among other things,
eliminate the manner of sale requirements and revise the notice provisions of
that rule. The Commission has also solicited comments on other possible changes
to Rule 144, including possible revisions to the one- and two-year holding
periods and the volume limitations referred to above.
 
    As of September 30, 1997, options to purchase an aggregate of 646,667 shares
of Common Stock were outstanding under the Company's 1997 Stock Compensation
Plan. See "Management--1997 Stock Compensation Plan." In general, pursuant to
Rule 701 under the Securities Act, any employee, officer or director of, or
consultant to, the Company who purchased his or her shares pursuant to a written
compensatory plan or contract is entitled to rely on the resale provisions of
Rule 701, which permit non-affiliates to sell such shares without compliance
with the public information, holding period, volume limitation or notice
provisions of Rule 144, and permit affiliates to sell such shares without
compliance with the holding period provisions of Rule 144, in each case
commencing 90 days after the date of this Prospectus. In addition, the Company
intends to file a registration statement covering the 1,500,000 shares of Common
Stock issuable upon exercise of stock options that may be granted in the future
under the 1997 Stock Compensation Plan, in which case such shares of Common
Stock generally will be freely tradable by non-affiliates in the public market
without restriction under the Securities Act.
 
    The Company, its executive officers, directors and current stockholders, and
the persons acquiring shares of Common Stock in connection with the Acquisitions
have agreed not to offer for sale, sell, contract to sell, grant any option or
other right for the sale of, or otherwise dispose of (or enter into any
transaction or device which is designed to, or could be expected to, result in
the disposition by any person at any time in the future of) any shares of Common
Stock or any securities, indebtedness or other rights exercisable for or
convertible or exchangeable into shares of Common Stock owned or acquired in the
future in any manner prior to the expiration of 180 days after the date of this
Prospectus (the "180-Day Lockup Period") without the prior written consent of
Lehman Brothers Inc., except that the Company may, subject to certain
conditions, issue shares of Common Stock in connection with future acquisitions
and may grant Options or Awards (or issue shares of Common Stock upon exercise
of Options or Awards) under the 1997 Stock Compensation Plan. These restrictions
will be applicable to any shares acquired by any of those persons in the
Offering or otherwise during the 180-Day Lockup Period. In addition, the
Company's executive officers, directors and current stockholders and the persons
acquiring shares of Common Stock in connection with the Acquisitions have agreed
with the Company that they generally will not sell, transfer or otherwise
dispose of any of their shares for one year following the closing of the
Offering.
 
    In connection with the Acquisitions, the Company will enter into
registration rights agreements with former stockholders of the Founding
Affiliated Practices (the "Registration Rights Agreements"), which will provide
certain registration rights with respect to the Common Stock issued to such
stockholders in the Acquisitions. Each Registration Rights Agreement will
provide the holders of Common Stock subject to such agreement with the right to
participate in registrations by the Company of its equity securities in
 
                                       45
<PAGE>
underwritten offerings. The registration rights conferred by the Registration
Rights Agreements will terminate on the second anniversary of the closing of the
Offering. The Company is generally required to pay the costs associated with
such an offering, other than underwriting discounts and commissions and transfer
taxes attributable to the shares sold on behalf of the selling stockholders. The
Registration Rights Agreements provide that the number of shares of Common Stock
to be registered on behalf of the selling stockholders is subject to limitation
if the managing underwriter determines that market conditions require a
limitation. Under the Registration Rights Agreements, the Company will indemnify
the selling stockholders thereunder, and such stockholders will indemnify the
Company against, certain liabilities in respect of any registration statement or
offering covered by the Registration Rights Agreements. The Company and each of
its current stockholders are parties to a stockholders agreement, which provides
those stockholders registration rights substantially equivalent to the
registration rights in the Registration Rights Agreements.
 
    Prior to the Offering, there has been no established public market for the
Common Stock. No prediction can be made of the effect, if any, that sales of
shares under Rule 144, or otherwise, or the availability of shares for sale will
have on the market price of the Common Stock prevailing from time to time after
the Offering. The Company is unable to estimate the number of shares that may be
sold in the public market under Rule 144, or otherwise, because such amount will
depend on the trading volume in, and market price for, the Common Stock and
other factors. Nevertheless, sales of substantial amounts of shares in the
public market, or the perception that such sales could occur, could adversely
affect the market price of the Common Stock. See "Underwriting."
 
    Following the consummation of the Offering, the Company intends to register
1,500,000 shares of Common Stock under the Securities Act for use in connection
with future acquisitions. These shares generally will be freely tradable after
their issuance by persons not affiliated with the Company unless the Company
contractually restricts their resale. Resales of any of those shares during the
180-Day Lockup Period would require the prior written consent of Lehman Brothers
Inc.
 
                                       46
<PAGE>
                                  UNDERWRITING
 
    Under the terms and subject to the conditions contained in an Underwriting
Agreement dated the date of this Prospectus (the "Underwriting Agreement"), the
underwriters named below (the "Underwriters"), for whom Lehman Brothers Inc. and
Rauscher Pierce Refsnes, Inc. are acting as representatives (the
"Representatives"), have severally agreed to purchase, and the Company has
agreed to sell, the respective number of shares of Common Stock set forth
opposite the name of each such Underwriter below:
 
<TABLE>
<CAPTION>
                                                                                    NUMBER OF
UNDERWRITERS                                                                         SHARES
- ---------------------------------------------------------------------------------  -----------
<S>                                                                                <C>
Lehman Brothers Inc..............................................................
Rauscher Pierce Refsnes, Inc.....................................................
 
                                                                                   -----------
    Total........................................................................    2,500,000
                                                                                   -----------
                                                                                   -----------
</TABLE>
 
    The Underwriting Agreement provides that the obligations of the Underwriters
to purchase the shares of Common Stock are subject to certain conditions, and
that, if any of the foregoing shares of Common Stock are purchased by the
Underwriters pursuant to the Underwriting Agreement, then all the shares of
Common Stock agreed to be purchased by the Underwriters pursuant to the
Underwriting Agreement must be so purchased.
 
    The Company has been advised by the Representatives that the Underwriters
propose to offer the shares of Common Stock in part directly to the public at
the public offering price set forth on the cover page of this Prospectus, and in
part to certain dealers (who may include the Underwriters) at such public
offering price, less a selling concession not in excess of $     per share. The
Underwriters may allow, and such dealers may reallow, a concession not in excess
of $     per share to certain brokers or dealers. After the initial offering to
the public, the public offering price, the concession to selected dealers and
the reallowance may be changed by the Underwriters.
 
    The Company has granted the Underwriters an option to purchase up to 375,000
additional shares of Common Stock at the initial public offering price less the
underwriting discounts and commissions shown on the cover page of this
Prospectus, solely to cover over-allotments, if any. Such option may be
exercised at any time until 30 days after the date of the Underwriting
Agreement. To the extent that the option is exercised, each Underwriter will be
committed, subject to certain conditions, to purchase a number of additional
shares of Common Stock proportionate to such Underwriter's initial commitment as
indicated in the preceding table.
 
    The Company has agreed to indemnify the Underwriters against certain
liabilities, including liabilities under the Securities Act, or to contribute,
under certain circumstances, to payments that the Underwriters may be required
to make in respect thereof.
 
    The Company, its executive officers, directors and current stockholders and
the persons acquiring shares of Common Stock in connection with the Acquisitions
have agreed not to, directly or indirectly, offer for sale, sell, contract to
sell, grant any option or other right for the sale of, or otherwise dispose of
(or enter into any transaction or device which is designed to, or could be
expected to, result in the disposition by any person at any time in the future
of) any shares of Common Stock or any securities, indebtedness or other rights
exercisable for or convertible or exchangeable into shares of Common Stock prior
to the expiration of 180 days after the date of this Prospectus, without the
prior written consent of Lehman Brothers Inc., except that the Company may,
subject to certain conditions, issue shares of Common Stock in connection with
future acquisitions and grant Options or Awards (or issue shares of
 
                                       47
<PAGE>
Common Stock upon exercise of Options or Awards) under the 1997 Stock
Compensation Plan. For information respecting additional restrictions on sales
by the Company's executive officers, directors, current stockholders and the
persons acquiring shares of Common Stock in connection with the Acquisitions,
see "Shares Eligible for Future Sale."
 
    Prior to the Offering, there has been no public market for the Common Stock.
The initial public offering price will be negotiated between the Company and the
Representatives. Among the factors to be considered in determining the initial
public offering price, in addition to prevailing market conditions, will be the
history of and the prospects for the industry in which the Company competes, the
past and present operations of the Founding Affiliated Practices, the historical
results of operations of the Founding Affiliated Practices, the Company's
capital structure, estimates of the business potential and earnings prospects of
the Company, an overall assessment of the Company, an assessment of the
Company's management and the consideration of the above factors in relation to
market valuation of companies in related businesses. There can be no assurance
that an active trading market will develop for the Common Stock or that the
Common Stock will trade in the public market subsequent to the Offering at or
above the initial public offering price.
 
    Until the distribution of the Common Stock is completed, rules of the
Commission may limit the ability of the Underwriters and certain selling group
members to bid for and purchase shares of Common Stock. As an exception to these
rules, the Representatives are permitted to engage in certain transactions that
stabilize the price of the Common Stock. Such transactions may consist of bids
or purchases for the purposes of pegging, fixing or maintaining the price of the
Common Stock.
 
    If the Underwriters create a short position in the Common Stock in
connection with the Offering (I.E., if they sell more shares of Common Stock
than are set forth on the cover page of this Prospectus), the Representatives
may reduce that short position by purchasing Common Stock in the open market.
The Representatives also may elect to reduce any short position by exercising
all or part of the over-allotment option described herein.
 
    The Representatives also may impose a penalty bid on certain Underwriters
and selling group members. This means that, if the Representatives purchase
shares of Common Stock in the open market to reduce the Underwriters' short
position or to stabilize the price of the Common Stock, they may reclaim the
amount of the selling concession from the Underwriters and selling group members
who sold those shares as part of the Offering.
 
    In general, purchases of a security for the purpose of stabilization or to
reduce a syndicate short position could cause the price of the security to be
higher than it might otherwise be in the absence of such purchases. The
imposition of a penalty bid might have an effect on the price of a security to
the extent that it were to discourage resales of the security by purchasers in
the Offering.
 
    Neither the Company nor any of the Underwriters makes any representation or
prediction as to the direction or magnitude of any effect that the transactions
described above may have on the price of the Common Stock. In addition, neither
the Company nor any of the Underwriters makes any representation that the
Representatives will engage in such transactions or that such transactions, once
commenced, will not be discontinued without notice.
 
    At the request of the Company, the Underwriters have reserved up to       of
the shares of Common Stock offered hereby for sale at the initial public
offering price to employees of the Company and other persons associated with the
Company.
 
    The Representatives have informed the Company that the Underwriters do not
intend to confirm sales of shares of Common Stock offered hereby to accounts
over which they exercise discretionary authority.
 
                                       48
<PAGE>
                                 LEGAL MATTERS
 
    The validity of the shares of Common Stock offered hereby will be passed
upon for the Company by Jackson Walker L.L.P., Houston, Texas. Certain legal
matters in connection with the sale of the Common Stock offered hereby will be
passed upon for the Underwriters by Baker & Botts, L.L.P., Houston, Texas.
 
                                    EXPERTS
 
    The financial statements of Pentegra Dental Group, Inc. as of June 30, 1997
and for the period from inception, February 21, 1997, through June 30, 1997 and
the combined financial statements of Pentegra, Ltd. and Napili, International as
of December 31, 1995 and 1996 and for each of the three years ended December 31,
1996, as detailed in the index on page F-1, included in this Prospectus, have
been audited by Coopers & Lybrand L.L.P., independent accountants, as indicated
in their reports with respect thereto, and are included herein in reliance upon
the authority of said firm as experts in accounting and auditing.
 
                             ADDITIONAL INFORMATION
 
    The Company has filed with the Commission a Registration Statement on Form
S-1 (together with all exhibits, schedules and amendments relating thereto, the
"Registration Statement") with respect to the Common Stock offered hereby. This
Prospectus, filed as part of the Registration Statement, does not contain all
the information contained in the Registration Statement, certain portions of
which have been omitted in accordance with the rules and regulations of the
Commission. For further information with respect to the Company and the Common
Stock offered hereby, reference is made to the Registration Statement including
the exhibits and schedules thereto. Statements contained in this Prospectus as
to the contents of any contract or other document filed as an exhibit to the
Registration Statement accurately describe the material provisions of such
document and are qualified in their entirety by reference to such exhibits for
complete statements of their provisions. All of these documents may be inspected
without charge at the Public Reference Section of the Commission at Judiciary
Plaza, 450 Fifth Street, N.W., Room 1024, Washington, D.C. 20549, and at the
following regional offices of the Commission: Citicorp Center, 500 West Madison
Street, Suite 1400, Chicago, Illinois 60661; and 7 World Trade Center, 13th
Floor, New York, New York 10048. Copies can also be obtained from the Commission
at prescribed rates. The Commission maintains a Web site (http://www.sec.gov)
that contains reports, proxy and information statements and other information
regarding registrants that file electronically with the Commission.
 
                                       49
<PAGE>
                         INDEX TO FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
                                                                                                         PAGE
                                                                                                    --------------
<S>                                                                                                 <C>
Pentegra Dental Group, Inc. Unaudited Pro Forma Balance Sheet.....................................       F-2
  Unaudited Pro Forma Balance Sheet as of June 30, 1997...........................................       F-3
  Notes to Unaudited Pro Forma Balance Sheet......................................................       F-4
 
Pentegra Dental Group, Inc. Financial Statements
  Report of Independent Public Accountants........................................................       F-5
  Balance Sheet as of June 30, 1997...............................................................       F-6
  Statement of Operations for the period from inception,
    February 21, 1997, through June 30, 1997......................................................       F-7
  Statement of Changes in Stockholders' Equity for the period from inception, February 21, 1997,
    through June 30, 1997.........................................................................       F-8
  Statement of Cash Flows for the period from inception, February 21, 1997, through June 30,
    1997..........................................................................................       F-9
  Notes to Financial Statements...................................................................       F-10
 
Pentegra, Ltd. and Napili, International Combined Financial Statements
  Report of Independent Public Accountants........................................................       F-19
  Combined Balance Sheets as of December 31, 1995 and 1996 and
    June 30, 1997 (Unaudited).....................................................................       F-20
  Combined Statements of Operations for the years ended December 31, 1994, 1995 and 1996 and for
    the six months ended June 30, 1996 and 1997 (Unaudited).......................................       F-21
  Combined Statements of Changes in Stockholders' Equity (Deficit) for the years ended December
    31, 1994, 1995 and 1996 and for the six months ended
    June 30, 1997 (Unaudited).....................................................................       F-22
  Combined Statements of Cash Flows for the years ended December 31, 1994, 1995 and 1996 and for
    the six months ended June 30, 1996 and 1997 (Unaudited).......................................       F-23
  Notes to Combined Financial Statements..........................................................       F-24
</TABLE>
 
                                      F-1
<PAGE>
                       UNAUDITED PRO FORMA BALANCE SHEET
 
    The unaudited pro forma balance sheet dated June 30, 1997 of Pentegra Dental
Group, Inc. (together with its parent entity, Pentegra Investments, Inc.,
"Pentegra" or the "Company") has been prepared as if (a) the acquisition by the
Company of certain assets and assumption of certain liabilities of 51 dental
practices (the "Founding Affiliated Practices") for consideration consisting of
a combination of cash and shares of its common stock, par value $.001 per share
(the "Common Stock"), and the execution of agreements to provide management
services to the Founding Affiliated Practices (collectively, the
"Acquisitions"), (b) the repayment of certain debt of the Founding Affiliated
Practices, (c) the acquisition by the Company (the "Pentegra/Napili
Transaction") of certain assets of Pentegra, Ltd. and Napili, International
("Napili"), (d) the repurchase by PII of 245,845 shares of Class B Preferred
Stock of Pentegra Investments, Inc, ("PII") from affiliates of the Company at
the subscription price per share paid to PII for those shares and the redemption
by PII of an aggregate of 1,337,500 shares of its Class A Preferred Stock and
Class B Preferred Stock for $2.00 per share (the "Repurchase and Redemption"),
(e) the exchange of all outstanding shares of common stock of PII for shares of
Common Stock on a one-for-one basis (the "Share Exchange") and (f) the initial
public offering of 2,500,000 shares of Common Stock (the "Offering") and the
application of the proceeds therefrom (as described in "Use of Proceeds"), all
had been completed, as if those transactions had occurred on June 30, 1997. The
Acquisitions, the repayment of certain debt of the Founding Affiliated
Practices, the Pentegra/Napili Transaction, the Repurchase and Redemption, the
Share Exchange and the Offering are each contingent on the occurrence of the
others.
 
    The Company will not employ dental professionals or control the practice of
dentistry by the dentists. As the Company will not be acquiring the future
patient revenues to be earned by the Founding Affiliated Practices, the
Acquisitions are not deemed to be business combinations. In accordance with the
Securities and Exchange Commission's Staff Accounting Bulletin No. 48,
"Transfers of Nonmonetary Assets by Promoters or Shareholders," the Acquisitions
will be accounted for at their historical cost basis with the shares of Common
Stock to be issued in the Acquisitions being valued at the historical net book
value of the nonmonetary assets acquired, net of liabilities assumed. The cash
consideration will be reflected as a dividend by the Company to the owners of
the Founding Affiliated Practices. The acquisition of certain assets of
Pentegra, Ltd. and Napili will be accounted for as a purchase in accordance with
Accounting Principles Board Opinion No. 16.
 
    The unaudited pro forma balance sheet has been prepared by the Company based
on the audited historical financial statements of the Company, Pentegra, Ltd.
and Napili included elsewhere in this Prospectus, including the audited combined
financial information of the Founding Affiliated Practices included in the notes
to the Company's financial statements, and assumptions deemed appropriate by the
Company.
 
                                      F-2
<PAGE>
                          PENTEGRA DENTAL GROUP, INC.
 
                       UNAUDITED PRO FORMA BALANCE SHEET
 
                                 JUNE 30, 1997
 
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                       PENTEGRA, LTD./
                                                           PENTEGRA        NAPILI        ADJUSTMENTS    PRO FORMA
                                                          -----------  ---------------  -------------  -----------
 
<S>                                                       <C>          <C>              <C>            <C>
                                                      ASSETS
Current assets:
  Cash and cash equivalents.............................   $     845      $      66     $      28,125(A)  $  16,170(1)
                                                                                               (6,942 (B)
                                                                                                 (200 (C)
                                                                                               (2,789 (D)
                                                                                               (2,869 (E)
                                                                                                  (66 (F)
  Accounts receivable, net..............................          --              2               554(B)        554
                                                                                                   (2 (F)
Other current assets....................................         340              1                (1 (F)        340
                                                          -----------        ------     -------------  -----------
    Total current assets................................       1,185             69            15,810      17,064
 
Property and equipment, net.............................           5             19             2,774(B)      2,809
                                                                                                   11(C)
Deferred offering costs.................................         200             --              (200 (A)         --
Other noncurrent assets, net............................           6             --               170(C)        176
                                                          -----------        ------     -------------  -----------
    Total assets........................................  $    1,396   $         88     $      18,565  $   20,049
                                                          -----------        ------     -------------  -----------
                                                          -----------        ------     -------------  -----------
 
                                       LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
  Accounts payable and accrued liabilities..............  $       10   $         66     $         126(B) $    1,386
                                                                                                  (66 (F)
                                                                                                1,250(G)
  Current portion of long-term debt.....................          --              7               785(B)     --
                                                                                                 (785 (E)
                                                                                                   (7 (F)
                                                          -----------        ------     -------------  -----------
    Total current liabilities...........................          10             73             1,303       1,386
 
Long-term debt..........................................          --              5             2,084(B)         --
                                                                                               (2,084 (E)
                                                                                                   (5 (F)
Class A redeemable preferred stock......................         675                             (675 (D)         --
Class B redeemable preferred stock......................         414             --              (414 (D)         --
 
Stockholders' equity:
  Common stock..........................................          18            952                 3(A)          7
                                                                                                    2(B)
                                                                                                 (952 (F)
                                                                                                  (16 (H)
  Additional paid-in capital............................         518             --            27,923(A)     20,145
                                                                                               (6,612 (B)
                                                                                               (1,700 (D)
                                                                                                   16(H)
  Accumulated deficit...................................        (239 )         (942   )           942(F)     (1,489 )
                                                                                               (1,250 (G)
                                                          -----------        ------     -------------  -----------
    Total stockholders' equity..........................         297             10            18,356      18,663
                                                          -----------        ------     -------------  -----------
    Total liabilities and stockholders' equity..........  $    1,396   $         88     $      18,565  $   20,049
                                                          -----------        ------     -------------  -----------
                                                          -----------        ------     -------------  -----------
</TABLE>
 
- ---------
 
(1) See "Use of Proceeds."
 
The accompanying notes are an integral part of the unaudited pro forma financial
                                  statements.
 
                                      F-3
<PAGE>
                          PENTEGRA DENTAL GROUP, INC.
 
                   NOTES TO UNAUDITED PRO FORMA BALANCE SHEET
 
UNAUDITED PRO FORMA BALANCE SHEET ADJUSTMENTS
 
    The accompanying unaudited pro forma balance sheet as of June 30, 1997 gives
effect to the Acquisitions, the payment of debt assumed from the Founding
Affiliated Practices, the Pentegra/Napili Transaction, the Repurchase and
Redemption, the Share Exchange and the Offering and the application of the
proceeds therefrom (as described in "Use of Proceeds," except for the repayment
of $300,000 aggregate principal amount outstanding under the Company's 9.5%
promissory notes), as if those transactions had occurred on June 30, 1997. The
unaudited pro forma balance sheet does not represent the historical or future
financial position of the Company.
 
(A) Reflects the issuance of 2,500,000 shares Common Stock in the Offering, net
    of (i) estimated underwriters' discounts and commissions and (ii) estimated
    offering costs of $2,300,000 less previously funded offering costs to be
    paid with proceeds from the issuance of capital stock of Pentegra
    Investment, Inc., including all Class A Preferred Stock and Class B
    Preferred Stock. The resulting net proceeds are reflected as Common Stock
    and additional paid-in capital. The Company had deferred offering costs of
    $200,000 at June 30, 1997.
 
(B) Reflects completion of the Acquisitions, which will involve (i) the issuance
    of 2,062,511 shares of Common Stock valued at the historical net book value
    of the assets transferred less the liabilities assumed, (ii) the deemed
    declaration of dividends totaling $6,514,000, taken together, and (iii) the
    purchase of monetary assets from the Founding Affiliated Practices for cash
    of $428,000, which assets are recorded at fair value. The historical net
    book value of the assets transferred and the liabilities assumed from the
    Founding Affiliated Practices are as follows (in thousands):
 
<TABLE>
<CAPTION>
<S>                                                                                   <C>
Property and equipment transferred..................................................  $   2,774
Less
  Current portion of notes payable..................................................       (785)
  Long-term portion of notes payable................................................     (2,084)
                                                                                      ---------
    Liabilities assumed, net of assets transferred..................................  $     (95)
                                                                                      ---------
                                                                                      ---------
</TABLE>
 
(C) Reflects completion of the Pentegra/Napili Transaction for consideration of
    $200,000 cash. As of June 30, 1997, the assets to be acquired in the
    Pentegra/Napili Transaction have a fair value of approximately $30,000. The
    cost in excess of the fair value of the net assets acquired will be
    amortized over a five-year period.
 
(D) Reflects the repurchase of 245,835 shares of Class B Preferred Stock from
    affiliates of the Company at the price per share paid to PII for those
    shares and the redemption of an aggregate of 1,337,500 shares of Class A
    Preferred Stock and Class B Preferred Stock for $2.00 per share and
    recognition of the related deemed dividend of $1,700,000.
 
(E) Reflects the use of proceeds from the Offering to repay the debt assumed in
    the Acquisitions.
 
(F) Reflects certain assets not acquired and liabilities not assumed of
    Pentegra, Ltd. and Napili in the Pentegra/Napili Transaction and elimination
    of those companies' historical equity accounts.
 
(G) Reflects the accrual of an employment bonus of $1,250,000 to the Chairman of
    the Board of Directors (the "Chairman"). Payment of the bonus will be made
    in increments of $10,000 on the closing of each future dental practice
    affiliation until the bonus has been paid in full. Management expects the
    bonus will be paid within the year following the Offering. In any event,
    pursuant to the terms of the Company's employment agreement with the
    Chairman, the employment bonus must be paid in full within three years of
    the Offering. The bonus will be expensed upon closing of the Offering
    because its payment is not contingent on future services.
 
(H) Reflects the exchange at the offering of 1,756,667 shares of $0.001 par
    value common stock of Pentegra Dental Group, Inc. for 1,756,667 shares of
    $0.01 par value common stock of PII.
 
                                      F-4
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Board of Directors and Stockholders of
Pentegra Dental Group, Inc.:
 
    We have audited the accompanying balance sheet of Pentegra Dental Group,
Inc. as of June 30, 1997, and the related statements of operations, changes in
stockholders' equity, and cash flows for the period from inception, February 21,
1997, through June 30, 1997. These financial statements are the responsibility
of the Company's management. Our responsibility is to express an opinion on
these financial statements based on our audit.
 
    We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audit provides a reasonable basis for our opinion.
 
    In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of Pentegra Dental Group, Inc.
as of June 30, 1997, and the results of its operations and its cash flows for
the period from inception, February 21, 1997, through June 30, 1997 in
conformity with generally accepted accounting principles.
 
                                          COOPERS & LYBRAND L.L.P.
 
Houston, Texas
October 10, 1997
 
                                      F-5
<PAGE>
                          PENTEGRA DENTAL GROUP, INC.
 
                                 BALANCE SHEET
 
                                 JUNE 30, 1997
 
               (IN THOUSANDS, EXCEPT SHARE AND PER SHARE AMOUNTS)
 
<TABLE>
<S>                                                                                   <C>
                                            ASSETS
Current assets:
  Cash and cash equivalents.........................................................  $     845
  Stock subscriptions receivable....................................................        326
  Prepaid expenses and other current assets.........................................         14
                                                                                      ---------
    Total current assets............................................................      1,185
Property and equipment..............................................................          5
Deferred offering costs.............................................................        200
Organizational costs................................................................          6
                                                                                      ---------
        Total assets................................................................  $   1,396
                                                                                      ---------
                                                                                      ---------
 
                             LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
  Accounts payable and accrued liabilities..........................................  $      10
                                                                                      ---------
    Total current liabilities.......................................................         10
                                                                                      ---------
Commitments and contingencies (See Notes)...........................................
Class A redeemable preferred stock, $0.01 par value, 5,000,000 shares authorized,
  900,000 shares issued and outstanding (liquidation preference of $900)............        675
Class B redeemable preferred stock, $0.01 par value, 5,000,000 shares authorized,
  683,335 shares issued and outstanding (liquidation preference of $683)............        414
Stockholders' equity:
  Common stock, $0.01 par value, 40,000,000 shares authorized, 1,756,667 shares
    issued and outstanding..........................................................         18
Additional paid-in capital..........................................................        518
Accumulated deficit.................................................................       (239)
                                                                                      ---------
    Total stockholders' equity......................................................        297
                                                                                      ---------
        Total liabilities and stockholders' equity..................................  $   1,396
                                                                                      ---------
                                                                                      ---------
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
 
                                      F-6
<PAGE>
                          PENTEGRA DENTAL GROUP, INC.
 
                            STATEMENT OF OPERATIONS
 
    FOR THE PERIOD FROM INCEPTION, FEBRUARY 21, 1997, THROUGH JUNE 30, 1997
 
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
Revenue.........................................................................  $      --
<S>                                                                               <C>
Expenses:
  General and administrative expenses...........................................         91
  Compensation expense in connection with issuance of common stock..............        148
                                                                                  ---------
      Total expenses............................................................        239
                                                                                  ---------
Net loss before income taxes....................................................       (239)
Provision for income taxes......................................................         --
                                                                                  ---------
Net loss........................................................................  $    (239)
                                                                                  ---------
                                                                                  ---------
Net loss per share..............................................................  $   (0.14)
                                                                                  ---------
                                                                                  ---------
Weighted average common shares outstanding......................................      1,757
                                                                                  ---------
                                                                                  ---------
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
 
                                      F-7
<PAGE>
                          PENTEGRA DENTAL GROUP, INC.
 
                  STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY
 
    FOR THE PERIOD FROM INCEPTION, FEBRUARY 21, 1997, THROUGH JUNE 30, 1997
 
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                               COMMON STOCK         ADDITIONAL                       TOTAL
                                                         ------------------------     PAID-IN      ACCUMULATED   STOCKHOLDERS'
                                                           SHARES       AMOUNT        CAPITAL        DEFICIT        EQUITY
                                                         -----------  -----------  -------------  -------------  -------------
<S>                                                      <C>          <C>          <C>            <C>            <C>
Balance at February 21, 1997...........................          --    $      --     $      --      $      --      $      --
Issuance of common stock
  ($0.01 per share cash on February 21, 1997)..........         667            7             3             --             10
Issuance of common stock
  ($0.01 per share cash and $0.14 per share
  compensation on May 22, 1997)........................         767            8           107             --            115
Issuance of common stock
  ($1.27 per share cash on June 13, 1997)..............         290            3           366             --            369
Issuance of common stock
  ($0.01 per share cash and $1.26 per share
  compensation on June 13, 1997).......................          33           --            42             --             42
Net loss...............................................          --           --            --           (239)          (239)
                                                              -----        -----         -----          -----          -----
Balance at June 30, 1997...............................       1,757    $      18     $     518      $    (239)     $     297
                                                              -----        -----         -----          -----          -----
                                                              -----        -----         -----          -----          -----
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
 
                                      F-8
<PAGE>
                          PENTEGRA DENTAL GROUP, INC.
 
                            STATEMENT OF CASH FLOWS
 
    FOR THE PERIOD FROM INCEPTION, FEBRUARY 21, 1997, THROUGH JUNE 30, 1997
 
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
Cash flows from operating activities:
<S>                                                                                   <C>
  Net loss..........................................................................  $    (239)
  Compensation associated with issuance of common stock.............................        148
  Increase in prepaid expenses and other current assets.............................        (14)
  Increase in accounts payable and accrued liabilities..............................         10
                                                                                      ---------
      Net cash used by operating activities.........................................        (95)
                                                                                      ---------
Net cash used in investing activities--additions to property and equipment..........         (5)
                                                                                      ---------
Cash flows provided by financing activities:
  Proceeds from issuance of common and preferred stock..............................      1,151
  Offering costs....................................................................       (200)
  Organizational costs..............................................................         (6)
                                                                                      ---------
      Net cash provided by financing activities.....................................        945
                                                                                      ---------
Net increase in cash and cash equivalents...........................................        845
 
Balance at inception, February 21, 1997.............................................         --
                                                                                      ---------
Balance at June 30, 1997............................................................  $     845
                                                                                      ---------
                                                                                      ---------
Noncash investing activities:
  Stock subscriptions receivable....................................................  $     326
                                                                                      ---------
                                                                                      ---------
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
 
                                      F-9
<PAGE>
                          PENTEGRA DENTAL GROUP, INC.
 
                         NOTES TO FINANCIAL STATEMENTS
 
1.  BUSINESS AND ORGANIZATION:
 
    Pentegra Dental Group, Inc. (the "Company") was organized as a Delaware
corporation on February 21, 1997, for the purpose of creating a dental practice
management company.
 
    In July 1997, the Company changed its name to Pentegra Investments, Inc. and
formed a new wholly owned subsidiary named Pentegra Dental Group, Inc.
("Pentegra Dental"). Pentegra Dental's operations to date have consisted
primarily of seeking affiliations with dental practices, negotiating to acquire
the tangible assets of those practices, and negotiating agreements to provide
management services to those practices. Pentegra Dental plans to complete an
initial public offering of its common stock, par value $0.001 per share (the
"Offering") and simultaneously exchange cash and shares of its common stock for
selected assets and liabilities (the "Acquisitions") of 51 dental practices (the
"Affiliated Practices") (see Note 4). Additionally, the current shareholders
will exchange on a share-for-share basis, all of their shares of the Company's
common stock, par value $0.01 per share, for shares of common stock of Pentegra
Dental. It is contemplated that 245,835 shares of Class B preferred stock held
by affiliates of the Company will be repurchased at their original issuance
prices ranging from $0.01 to $1.00 per share and 1,337,500 shares of Class A and
Class B preferred stock held by nonaffiliates will be redeemed at a price of
$2.00 per share with the proceeds of the Offering. Pentegra Dental has also
entered into an agreement to acquire substantially all the assets and operations
of a dental management consulting firm, Pentegra, Ltd., and a dental management
seminar company, Napili, International (the "Pentegra/Napili Transaction") (see
Note 3). The Acquisitions, the Pentegra/Napili Transaction and the Offering are
each contingent on the occurrence of the others.
 
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:
 
    CASH AND CASH EQUIVALENTS
 
    Cash and cash equivalents are defined as highly liquid financial instruments
with maturities of three months or less at the date of purchase.
 
    DEFERRED OFFERING COSTS
 
    Deferred offering costs include legal, accounting and other costs directly
related to the Offering. All deferred offering costs will be charged against the
proceeds of the Offering upon its completion. Such costs would be charged to
expense if the Offering were not completed.
 
    ORGANIZATIONAL COSTS
 
    Organizational costs are being amortized on a straight-line basis over a
five-year period.
 
    PREFERRED STOCK
 
    In May 1997, the Company divided the authorized and unissued preferred stock
into two classes of 5,000,000 shares each called "Class A" and "Class B." The
Company issued 133,335 shares of Class B nonvoting preferred stock for cash of
approximately $1,000. In June 1997, the Company issued 900,000 shares of Class A
nonvoting preferred stock, 550,000 shares of Class B nonvoting preferred stock
and 435,000 shares of common stock for $1,457,000, of which $1,131,000 was
collected in June 1997 and $326,000 was collected in July 1997. The Company
allocated $675,000 of the proceeds to the Class A preferred stock, $413,000 to
the Class B preferred stock and $369,000 to the common stock based on their
values of $0.75, $0.75 and $0.85 per share, respectively, as determined by an
independent valuation of the
 
                                      F-10
<PAGE>
                          PENTEGRA DENTAL GROUP, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (CONTINUED)
fair value of those shares as of the date of issuance. The proceeds from these
stock issuances are reserved for legal and accounting costs associated with the
Offering, as well as operating costs. The Class A and Class B preferred stock
will not be registered with the Securities and Exchange Commission as part of
the Offering. Holders of both classes of preferred stock are entitled to per
share dividends equivalent to any dividends that may be declared on the common
stock, but not to cumulative dividends. The preferred stock entitles the holders
thereof to preference in liquidation over the common stock.
 
    COMMON STOCK
 
    In February 1997, the Company issued 666,667 shares of common stock for cash
at a price of $0.01 per share. The Company issued an additional 766,667 shares
of common stock to members of management during May 1997 for cash at a price of
$0.01 per share. The Company valued these shares at $0.15 per share, based on an
independent valuation of the fair value of those shares as of the date of
issuance. In June 1997, in addition to the 290,000 shares of common stock issued
in connection with the issuance of the Class A and Class B preferred stock,
described above, the Company issued 33,333 shares of common stock for cash at a
price of $0.01 per share. Those shares were valued at $1.27 per share based on
an independent valuation of the fair value of those shares as of the date of
issuance. The difference between the cash received for common stock and its fair
value has been recognized as compensation expense.
 
    STOCK OPTION PLAN
 
    In September 1997, the board of directors of Pentegra Dental adopted the
1997 Stock Compensation Plan (the "Plan"). Employees, non-employee directors and
advisors and directors will be eligible to receive awards under the Plan and
only employees of the Company will be eligible to receive incentive stock
options. The aggregate number of options to purchase shares of common stock and
other awards of shares of common stock that may be granted under the Plan may
not exceed 2,000,000 shares. In August 1997, Pentegra Dental authorized issuance
of options to purchase 646,667 shares to employees, practice employees and
directors on the date the initial public offering price is determined. The
exercise price of these options will be the initial public offering price per
share. Pentegra Dental will account for options issued to employees and
non-employee directors under the Plan in accordance with APB Opinion No. 25.
 
    EARNINGS PER SHARE
 
    All share and per share information in the accompanying financial statements
have been retroactively restated to reflect the effects of a 2-for-3 reverse
split of the Company's common stock which was approved by the Company's Board of
Directors in October 1997.
 
    Earnings per share is based on the weighted average number of common and
equivalent shares outstanding during the period. Common shares issued at less
than the Offering price within one year of the Offering are treated as
outstanding during the entire period for all periods presented. Fully diluted
earnings per share are not presented because such amounts would be the same as
amounts computed for primary earnings per share or would be antidilutive.
 
    USE OF ESTIMATES
 
    The preparation of financial statements, in conformity with generally
accepted accounting principles, requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the
 
                                      F-11
<PAGE>
                          PENTEGRA DENTAL GROUP, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (CONTINUED)
reported amounts of revenues and expenses during the reporting period. Actual
results may in some instances differ from previously estimated amounts.
 
    INCOME TAXES
 
    The Company utilizes the liability method of accounting for income taxes.
Under this method, deferred taxes are determined based on differences between
the financial reporting and tax bases of assets and liabilities and are measured
using the enacted marginal tax rates currently in effect when the differences
reverse.
 
    As reflected in the accompanying statement of operations, the Company
incurred a net loss of $239,000 during the period from inception, February 21,
1997, through June 30, 1997. The Company has recognized no tax benefit from this
net loss. Due to the limited operations of the Company since its inception, a
valuation allowance has been established to offset the deferred tax asset
related to these net losses that have been capitalized for tax purposes. There
is no other significant difference in the tax and book bases of the Company's
assets or liabilities that would give rise to deferred tax balances.
 
    RECENT PRONOUNCEMENTS
 
    In February 1997, the Financial Accounting Standards Board ("FASB") issued
Statement of Financial Accounting Standards ("SFAS") No. 128, "Earnings Per
Share." SFAS No. 128 specifies the computation, presentation, and disclosure
requirements of earnings per share and supersedes Accounting Principles Board
Opinion No. 15, "Earnings Per Share." SFAS No. 128 requires a dual presentation
of basic and diluted earnings per share. Basic earnings per share, which
excludes the impact of common stock equivalents, replaces primary earnings per
share. Diluted earnings per share, which utilizes the average market price per
share as opposed to the greater of the average market price per share or ending
market price per share when applying the treasury stock method in determining
common stock equivalents, replaces fully diluted earnings per share. SFAS No.
128 is effective for both interim and annual periods ending after December 15,
1997.
 
    The Emerging Issues Task Force of the FASB is currently evaluating certain
matters relating to the physician practice management industry, which the
Company expects will include a review of accounting for affiliated dental
practices. The Company is unable to predict the impact, if any, that this review
may have on Pentegra Dental's financial statement presentation.
 
3.  RELATED PARTY TRANSACTIONS:
 
    Pentegra Dental has entered into an agreement with the Chairman of its Board
of Directors effective at the date the Offering closes, to purchase
substantially all the assets and the operations of Pentegra, Ltd. and Napili,
International for cash consideration of $200,000. Pentegra Dental will enter
into an employment agreement, effective at the date the Offering closes, that
provides for the payment to the Chairman of the Board of Directors of an
employment bonus of $1,250,000. Payment of the bonus is based on $10,000 on the
closing of each future dental practice affiliation subsequent to the
Acquisitions. However, the bonus must be paid in full within three years. The
employment bonus will be charged to operations in the period in which the
Offering closes.
 
    Since the Company's inception, it has occupied and had access to the
facilities, equipment and staff of a relative of an executive officer and
director of the Company. Prior to June 1, 1997, that use was
 
                                      F-12
<PAGE>
                          PENTEGRA DENTAL GROUP, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
3.  RELATED PARTY TRANSACTIONS: (CONTINUED)
insignificant. Effective June 1, 1997, the Company has agreed to compensate the
affiliate for use of and access to its office facilities, equipment and staff at
the rate of $10,000 per month.
 
    The Company has agreed to lease a portion of the office facilities,
equipment and staff of Pentegra, Ltd., which is wholly owned by the Company's
Chairman of the Board. The Company has agreed to compensate Pentegra, Ltd. for
use of and access to its office facilities, equipment and staff at the rate of
$11,000 per month until the Pentegra/Napili Transaction is completed, whereupon
the entire lease of those facilities will be assumed by Pentegra Dental.
 
    The Company believes that the compensation being paid to these related
parties represents the fair market value of the services that are being provided
to the Company.
 
4.  PLANNED TRANSACTIONS:
 
    Pentegra Dental plans to complete, through a series of mergers and asset
transfers, the acquisition of certain assets and assumption of certain
liabilities of the Founding Affiliated Practices (the "Acquisitions"). Owners of
the Founding Affiliated Practices will receive shares of Pentegra Dental common
stock and cash as consideration in the Acquisitions. In connection with the
Acquisitions, the selling dentists and their professional corporations,
professional associations or other entities (collectively, the "PCs") will enter
into long-term service agreements with Pentegra Dental. Additionally, those
dentists will enter into employment and noncompete agreements with the PCs.
 
    Pentegra Dental will not employ dentists or control the practice of
dentistry by the dentists employed by the PCs. As Pentegra Dental will be
executing management service agreements and will not hold any equity ownership
in the PCs, the Acquisitions are deemed not to be business combinations. In
accordance with the Securities and Exchange Commission's Staff Accounting
Bulletin No. 48, "Transfers of Nonmonetary Assets by Promoters or Shareholders,"
(i) each of the Founding Affiliated Practices will be deemed a promoter of the
Offering, (ii) the transferred nonmonetary assets and assumed liabilities will
be accounted for at the historical cost basis of the Founding Affiliated
Practices, (iii) any monetary assets included in the Acquisitions will be
recorded at fair value, (iv) the net book value of the net assets acquired by
Pentegra Dental will be recorded as the value of the common stock issued and (v)
cash consideration paid to selling dentists in conjunction with the Acquisitions
will be reflected as a dividend paid by Pentegra Dental.
 
    The information set forth below assumes all the Founding Affiliated
Practices will participate in the Acquisitions. Although management expects that
all the practices will participate, there is no assurance that will be the case.
 
                                      F-13
<PAGE>
                          PENTEGRA DENTAL GROUP, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
4.  PLANNED TRANSACTIONS: (CONTINUED)
    The net assets to be transferred and liabilities to be assumed from the
Founding Affiliated Practices are summarized, on a combined basis, in the
following table (in thousands):
 
<TABLE>
<CAPTION>
                                                                    DECEMBER 31,
                                                                        1996
                                                                    ------------   JUNE 30,
                                                                                     1997
                                                                                  -----------
                                                                                  (UNAUDITED)
<S>                                                                 <C>           <C>
Patient receivables, net of allowances............................   $      787    $     554
Property, equipment and improvements, net.........................        2,958        2,774
                                                                    ------------  -----------
  Assets transferred..............................................        3,745        3,328
Accounts payable and accrued liabilities..........................          (81)        (126)
Current portion of notes payable..................................       (1,103)        (785)
Long-term portion of notes payable................................       (1,460)      (2,084)
                                                                    ------------  -----------
  Assets transferred, net of liabilities assumed..................   $    1,101    $    (333)
                                                                    ------------  -----------
                                                                    ------------  -----------
</TABLE>
 
    Upon consummation of the Acquisitions, Pentegra Dental will enter into a
service agreement with each Founding Affiliated Practice under which Pentegra
Dental will become the exclusive manager and administrator of non-dental
services relating to the operation of the Founding Affiliated Practices. The
actual terms of the various Service Agreements vary from the description below
on a case-by-case basis, depending on negotiations with the individual Founding
Affiliated Practices and the requirements of applicable law and governmental
regulations.
 
    The management service revenues that will be earned by Pentegra Dental
subsequent to the Acquisitions and the execution of the service agreements will
be based on various arrangements. In general, the resulting fee will be based
primarily on the dental service revenues less certain operating expenses
associated with each PC. The Company's standard form of service agreement (the
"Standard Contract") will be applied to all practices operating in jurisdictions
where permitted. In those instances where the Standard Contract may not be
permitted by applicable law, an alternative form of agreement (the "Alternative
Contract") will be used. In any jurisdiction where neither the Standard Contract
nor the Alternative Contract is permitted, the fee will be based on a flat fee
(the "fixed-fee agreements") that will be subject to annual renegotiation or
adjustment. The patient revenue and operating expenses of the
 
                                      F-14
<PAGE>
                          PENTEGRA DENTAL GROUP, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
4.  PLANNED TRANSACTIONS: (CONTINUED)
Founding Affiliated Practices are summarized, on a combined basis, in the
following tables for the year ended December 31, 1996 and the six months ended
June 30, 1997 (in thousands):
 
<TABLE>
<CAPTION>
                                                                                YEAR ENDED
                                                                            DECEMBER 31, 1996
                                                                          ----------------------
                                                                           PATIENT    OPERATING
                                                                           REVENUE    EXPENSES
                                                                          ---------  -----------
<S>                                                                       <C>        <C>
Practices participating under the Standard Contract.....................  $  35,415   $  19,442
Practices participating under the Alternative Contract..................      1,200         797
Practices participating under fixed-fee agreements......................      2,599       1,393
                                                                          ---------  -----------
Totals for Founding Affiliated Practices................................  $  39,214   $  21,632
                                                                          ---------  -----------
                                                                          ---------  -----------
</TABLE>
 
<TABLE>
<CAPTION>
                                                                             SIX MONTHS ENDED
                                                                              JUNE 30, 1997
                                                                          ----------------------
                                                                           PATIENT    OPERATING
                                                                          REVENUES    EXPENSES
                                                                          ---------  -----------
                                                                               (UNAUDITED)
<S>                                                                       <C>        <C>
Practices participating under the Standard Contract.....................  $  17,690   $   9,433
Practices participating under the Alternative Contract..................        631         460
Practices participating under fixed-fee agreements......................      1,265         706
                                                                          ---------  -----------
Totals for Founding Affiliated Practices................................  $  19,586   $  10,599
                                                                          ---------  -----------
                                                                          ---------  -----------
</TABLE>
 
                                      F-15
<PAGE>
                          PENTEGRA DENTAL GROUP, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
4.  PLANNED TRANSACTIONS: (CONTINUED)
 
    Subsequent to the Acquisitions, the operating expenses of the Founding
Affiliated Practices will be the responsibility of Pentegra Dental. Pentegra
Dental will have discretion to control the level of those expenses in
conjunction with providing the related services to the PCs. The historical
operating expenses of the Founding Affiliated Practices for the year ended
December 31, 1996 and the six months ended June 30, 1997 that will be assumed by
Pentegra Dental in the future are summarized, on a combined basis, in the
following table (in thousands):
 
<TABLE>
<CAPTION>
                                                                                  SIX MONTHS
                                                                                     ENDED
                                                                     YEAR ENDED    JUNE 30,
                                                                    DECEMBER 31,     1997
                                                                        1996      -----------
                                                                    ------------  (UNAUDITED)
<S>                                                                 <C>           <C>
Salaries, wages and benefits of employees, excluding the
  dentists........................................................   $    6,542    $   3,351
Dental supplies...................................................        5,865        2,982
Rent..............................................................        1,936          954
Advertising and marketing expenses................................          605          257
General and administrative expenses...............................        5,915        2,682
Other expenses....................................................          769          373
                                                                    ------------  -----------
    Total operating expenses......................................       21,632       10,599
Depreciation and amortization.....................................          901          449
                                                                    ------------  -----------
 
    Total expenses................................................   $   22,533    $  11,048
                                                                    ------------  -----------
                                                                    ------------  -----------
</TABLE>
 
    The combined historical financial information of the Founding Affiliated
Practices presented herein is not related to the financial position or results
of operations of Pentegra Dental or the Company. This information is presented
solely for the purpose of providing disclosures to potential investors regarding
the group of entities with which Pentegra Dental will be contracting to provide
future services. The Founding Affiliated Practices were not operated under
common control or management during the fiscal year ended December 31, 1996 or
the six months ended June 30, 1997.
 
UNAUDITED PRO FORMA MANAGEMENT SERVICES FEES
 
    Upon consummation of the Acquisitions, Pentegra Dental will enter into a
service agreement with each Founding Affiliated Practice under which Pentegra
Dental will become the exclusive manager and administrator of nondental services
relating to the operation of the Founding Affiliated Practices. Under each
service agreement, the Founding Affiliated Practice will retain the
decision-making power and responsibility for, among other things, (i) hiring,
compensating and supervising dental employees and other licensed dental
professionals, (ii) ensuring that dentists have the required licenses,
credentials, approvals and other certifications appropriate to the performance
of their duties and (iii) complying with federal and state laws, regulations and
ethical standards applicable to the practice of dentistry. In addition, each
Founding Affiliated Practice will be exclusively in control of all aspects of
the practice of dentistry and the provision of dental services by it. The
following is a summary of the typical form of service agreement the Company will
enter into with each Founding Affiliated Practice. The Company expects to enter
into similar agreements with Affiliated Practices in the future. The actual
terms of the service agreements may vary
 
                                      F-16
<PAGE>
                          PENTEGRA DENTAL GROUP, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
4.  PLANNED TRANSACTIONS: (CONTINUED)
from the description below on a case-by-case basis, depending on negotiations
with the individual Founding Affiliated Practice and the requirements of
applicable laws and governmental regulations.
 
    The management service fees (the "Service Fees") payable to Pentegra Dental
by the Founding Affiliated Practices under the service agreements vary based on
the fair market value, as determined in arm's-length negotiations, or the nature
and amount of services provided. The Service Fees, together with reimbursement
for operating and non-operating expenses of the Founding Affiliated Practice to
be paid by Pentegra Dental pursuant to the service agreement, are payable
monthly, and consist of various combinations of the following: (i) Standard
Contract-a percentage (ranging from 35% to 40%) of the difference between the
sum of revenue related to dental services less operating expenses associated
with the Founding Affiliated Practices; (ii) Alternative Contract-a percentage
(16%) of the dental service revenue, not to exceed a percentage (35%) of the
difference between the sum of revenue related to dental services less operating
expenses associated with the Founding Affiliated Practices or (iii) Alternative
Contract-the greater of (a) a percentage (not to exceed 35%) of the difference
between the revenue related to dental services less operating expenses
associated with the Founding Affiliated Practices or (b) a specified fixed fee.
In addition, with respect to four of the Founding Affiliated Practices, the
Service Fees are based on flat fees that are subject to renegotiation or
adjustment on an annual basis.
 
    Each service agreement is for an initial term of 40 years, with automatic
extensions (unless specified notice is given) of five years. The service
agreement may be terminated by either party if the other party (i) files a
petition in bankruptcy (or other similar events occur) or (ii) defaults on the
performance of a material duty or obligation, which default continues for a
specified term after notice. In addition, the service agreement may be
terminated by the Company (i) if the Founding Affiliated Practice or a dental
employee engages in conduct for which the dental employee's license to practice
dentistry is revoked or suspended or is the subject of any restrictions or
limitations by any governmental authority to such an extent that he or she
cannot engage in the practice of dentistry, (ii) upon the death or disability of
the dentist or (iii) upon a breach by the dentist of the employment agreement
between the Founding Affiliated Practice and the dentist.
 
    The service agreement requires the Founding Affiliated Practice to enforce
the employment agreements between the Founding Affiliate Practice and the
dentists associated with the Founding Affiliated Practice (the "Dentist
Employment Agreements"). If the Founding Affiliated Practice does not enforce
such employment agreements, Pentegra Dental may, at its option, require the
Founding Affiliated Practice to assign such employment agreements to Pentegra
Dental or its designee.
 
    Under each service agreement, the Founding Affiliated Practice will be
responsible for obtaining professional liability insurance for the employees of
the Founding Affiliated Practice and Pentegra Dental will be responsible for
obtaining general liability and property insurance for the Founding Affiliated
Practice.
 
    Upon termination of a service agreement, the Founding Affiliated Practice
will have the option to purchase and assume, and Pentegra Dental will have the
option to require the Founding Affiliated Practice to purchase and assume, the
assets and liabilities related to the Founding Affiliated Practice at the fair
market value thereof, except in certain circumstances where the Founding
Affiliated Practice or Pentegra Dental, as applicable, was in breach of the
service agreement.
 
                                      F-17
<PAGE>
4.  PLANNED TRANSACTIONS: (CONTINUED)
    The unaudited pro forma management service fee for the Founding Affiliated
Practices, based on the historical patient revenues and operating expenses set
forth above is summarized in the following table for the year ended December 31,
1996 and the six months ended June 30, 1997 (in thousands):
 
<TABLE>
<CAPTION>
                                                                                   SIX-MONTHS
                                                                      YEAR ENDED      ENDED
                                                                     DECEMBER 31,   JUNE 30,
                                                                         1996         1997
                                                                     ------------  -----------
<S>                                                                  <C>           <C>
Practices participating under the Standard Contract................   $   24,442    $  12,002
Practices participating under the Alternative Contract.............          832          493
Practices participating under the fixed-fee arrangement............        1,798          908
                                                                     ------------  -----------
    Total pro forma service agreement revenues.....................   $   27,072    $  13,403
                                                                     ------------  -----------
                                                                     ------------  -----------
</TABLE>
 
5. SUBSEQUENT EVENTS
 
    In September 1997, the Company purchased 66,667 shares of its common stock
at a purchase price of $0.01 per share, of which 46,667 shares were purchased
from a director of the Company. The Company issued 66,667 shares of common stock
to a member of management at a purchase price of $0.01 per share and will
recognize the difference between the cash received and the shares' market value
as compensation expense.
 
    In October 1997, the Company purchased an additional 20,000 shares of its
common stock from a director at a purchase price per share of $0.01, and issued
20,000 shares of common stock and $300,000 of 9.5% promissory notes due on the
earlier of 30 days after the closing of the Offering or October 8, 1998.
 
                                      F-18
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Board of Directors and Stockholders of
 
Pentegra, Ltd. and Napili, International:
 
    We have audited the accompanying combined balance sheets of Pentegra, Ltd.
and Napili, International (collectively, "the Company") as of December 31, 1995
and 1996, and the related combined statements of operations, changes in
stockholders' equity (deficit) and cash flows for each of the three years in the
period ended December 31, 1996. These financial statements are the
responsibility of the Company's management. Our responsibility is to express an
opinion on these financial statements based on our audits.
 
    We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audits to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
    In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of the Company as of December
31, 1995 and 1996, and the results of its operations and its cash flows for each
of the three years in the period ended December 31, 1996 in conformity with
generally accepted accounting principles.
 
                                          COOPERS & LYBRAND L.L.P.
 
Houston, Texas
August 8, 1997
 
                                      F-19
<PAGE>
                    PENTEGRA, LTD. AND NAPILI, INTERNATIONAL
 
                            COMBINED BALANCE SHEETS
                      (IN THOUSANDS, EXCEPT SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                                                         DECEMBER 31,
                                                                                     --------------------
                                                                                       1995       1996
                                                                                     ---------  ---------  JUNE 30, 1997
                                                                                                           -------------
                                                                                                            (UNAUDITED)
<S>                                                                                  <C>        <C>        <C>
                                      ASSETS
 
Current assets:
  Cash and cash equivalents........................................................  $       9  $      38    $      66
  Accounts receivable, net.........................................................         15         15            2
  Prepaid expenses and other current assets........................................          1         --            1
                                                                                     ---------  ---------        -----
      Total current assets.........................................................         25         53           69
 
Property and equipment, net........................................................         23         21           19
                                                                                     ---------  ---------        -----
  Total assets.....................................................................  $      48  $      74    $      88
                                                                                     ---------  ---------        -----
                                                                                     ---------  ---------        -----
 
                  LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)
 
Current liabilities:
  Current portion of notes payable.................................................  $     318  $       7    $       7
  Accounts payable and accrued liabilities.........................................         59         75           66
                                                                                     ---------  ---------        -----
      Total current liabilities....................................................        377         82           73
 
Notes payable, net of current portion..............................................         --          9            5
 
Commitments and contingencies (Note 5).............................................         --         --           --
 
Stockholders' equity (deficit):
  Pentegra, Ltd. common stock, no par value, 100,000,000 shares authorized;
    20,357,762 issued and outstanding..............................................        576        898          925
  Napili, International common stock, no par value, 1,000,000 shares authorized;
    1,000 shares issued and outstanding............................................          8         29           27
 
Accumulated deficit................................................................       (913)      (944)        (942)
                                                                                     ---------  ---------        -----
  Total stockholders' equity (deficit).............................................       (329)       (17)          10
                                                                                     ---------  ---------        -----
      Total liabilities and stockholders' equity...................................  $      48  $      74    $      88
                                                                                     ---------  ---------        -----
                                                                                     ---------  ---------        -----
</TABLE>
 
     The accompanying notes are an integral part of the combined financial
                                  statements.
 
                                      F-20
<PAGE>
                    PENTEGRA, LTD. AND NAPILI, INTERNATIONAL
 
                       COMBINED STATEMENTS OF OPERATIONS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                     YEAR ENDED DECEMBER 31,               SIX MONTHS
                                                                                                         ENDED JUNE 30,
                                                                 -------------------------------  ----------------------------
                                                                   1994       1995       1996         1996           1997
                                                                 ---------  ---------  ---------  -------------  -------------
                                                                                                          (UNAUDITED)
<S>                                                              <C>        <C>        <C>        <C>            <C>
Consulting revenue.............................................  $     687  $     588  $     654    $     231      $     266
Lecture and seminar revenue....................................        256        253        268          140            242
                                                                 ---------  ---------  ---------        -----          -----
  Total revenue................................................        943        841        922          371            508
                                                                 ---------  ---------  ---------        -----          -----
Expenses:
  Staff salaries, wages and benefits...........................        181        246        292          122            126
  Lecture and seminar expenses.................................        117         96         70           47            161
  Rent.........................................................        148        144        159           46             74
  General and administrative expenses..........................        364        313        360           93            125
  Advertising expenses.........................................         17          4          3            3             --
  Depreciation.................................................         21         24          8            4              4
  Other expenses...............................................         15          9          2            2             11
                                                                 ---------  ---------  ---------        -----          -----
    Total expenses.............................................        863        836        894          317            501
                                                                 ---------  ---------  ---------        -----          -----
  Income from operations.......................................         80          5         28           54              7
Interest expense...............................................         49         46         52           27              5
                                                                 ---------  ---------  ---------        -----          -----
Income (loss) before income taxes and extraordinary item.......         31        (41)       (24)          27              2
Provision (benefit) for income taxes...........................         26        (13)         7            3             --
                                                                 ---------  ---------  ---------        -----          -----
Income (loss) before extraordinary gain........................          5        (28)       (31)          24              2
Extraordinary gain, net of income tax effect of $5.............         --          7         --           --             --
                                                                 ---------  ---------  ---------        -----          -----
    Net income (loss)..........................................  $       5  $     (21) $     (31)   $      24      $       2
                                                                 ---------  ---------  ---------        -----          -----
                                                                 ---------  ---------  ---------        -----          -----
</TABLE>
 
     The accompanying notes are an integral part of the combined financial
                                  statements.
 
                                      F-21
<PAGE>
                    PENTEGRA, LTD. AND NAPILI, INTERNATIONAL
 
        COMBINED STATEMENTS OF CHANGES IN STOCKHOLDER'S EQUITY (DEFICIT)
 
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                         COMMON STOCK                       STOCKHOLDERS'
                                                                    ----------------------   ACCUMULATED       EQUITY
                                                                     SHARES      AMOUNT        DEFICIT        (DEFICIT)
                                                                    ---------  -----------  -------------  ---------------
<S>                                                                 <C>        <C>          <C>            <C>
Balance, January 1, 1994..........................................     20,359   $     526     $    (897)      $    (371)
Net income........................................................         --          --             5               5
Capital distribution..............................................         --         (40)           --             (40)
                                                                    ---------       -----         -----           -----
 
Balance, December 31, 1994........................................     20,359         486          (892)           (406)
Net loss..........................................................         --          --           (21)            (21)
Capital contribution..............................................         --          98            --              98
                                                                    ---------       -----         -----           -----
 
Balance, December 31, 1995........................................     20,359         584          (913)           (329)
Net loss..........................................................         --          --           (31)            (31)
Capital contribution..............................................         --         343            --             343
                                                                    ---------       -----         -----           -----
 
Balance, December 31, 1996........................................     20,359         927          (944)            (17)
Income (Unaudited)................................................         --          --             2               2
Capital contribution (Unaudited)..................................         --          25            --              25
                                                                    ---------       -----         -----           -----
 
Balance, June 30, 1997 (Unaudited)................................     20,359   $     952     $    (942)      $      10
                                                                    ---------       -----         -----           -----
                                                                    ---------       -----         -----           -----
</TABLE>
 
     The accompanying notes are an integral part of the combined financial
                                  statements.
 
                                      F-22
<PAGE>
                    PENTEGRA, LTD. AND NAPILI, INTERNATIONAL
 
                       COMBINED STATEMENTS OF CASH FLOWS
 
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                                          SIX MONTHS
                                                                    YEAR ENDED DECEMBER 31,             ENDED JUNE 30,
                                                                -------------------------------  ----------------------------
                                                                  1994       1995       1996         1996           1997
                                                                ---------  ---------  ---------  -------------  -------------
<S>                                                             <C>        <C>        <C>        <C>            <C>
                                                                                                         (UNAUDITED)
Cash flows from operating activities:
  Net income (loss)...........................................  $       5  $     (21) $     (31)   $      24      $       2
  Adjustments:
    Depreciation and amortization.............................         21         24          8            4              4
    Deferred income taxes (benefit)...........................         22        (13)         1           --             --
    Gain on early extinguishment of debt, net.................         --         (7)        --           --             --
    Changes in operating assets and liabilities:
      Accounts receivable, net................................         39        (11)        --           14             13
      Prepaid expenses and other current assets...............        (22)        21          1            1             (1)
      Accounts payable and accrued liabilities................         60        (72)        15          (18)            (9)
                                                                      ---  ---------  ---------          ---            ---
      Net cash provided by (used in) operating activities.....        125        (79)        (6)          25              9
                                                                      ---  ---------  ---------          ---            ---
Net cash used in investing activities--capital expenditures...         (9)        (2)        (6)          (1)            (2)
 
Cash flows from financing activities
  Proceeds from long-term debt................................         --         25         22           22             --
  Repayment of debt...........................................         (2)      (120)      (324)         (25)            (4)
  Capital contributions (distributions).......................        (40)        98        343           25             25
                                                                      ---  ---------  ---------          ---            ---
    Net cash provided by (used in) financing activities.......        (42)         3         41           22             21
                                                                      ---  ---------  ---------          ---            ---
    Net change in cash and cash equivalents...................         74        (78)        29           46             28
Cash and cash equivalents, beginning of period................         13         87          9            9             38
                                                                      ---  ---------  ---------          ---            ---
Cash and cash equivalents, end of period......................  $      87  $       9  $      38    $      55      $      66
                                                                      ---  ---------  ---------          ---            ---
                                                                      ---  ---------  ---------          ---            ---
</TABLE>
 
     The accompanying notes are an integral part of the combined financial
                                  statements.
 
                                      F-23
<PAGE>
                    PENTEGRA, LTD. AND NAPILI, INTERNATIONAL
 
                     NOTES TO COMBINED FINANCIAL STATEMENTS
 
1.  CORPORATE ORGANIZATION AND BASIS OF PRESENTATION:
 
    Pentegra, Ltd., a consulting firm, and Napili, International ("Napili"), a
seminar company (collectively, "the Company"), provide clinical, administrative
and marketing consulting and training programs to dentists and their personnel.
Pentegra, Ltd. and Napili have common ownership and management.
 
    The combined financial statements reflect the operations of Pentegra, Ltd.
and Napili, the predecessor companies of Pentegra Dental Group, Inc. All
intercompany accounts and transactions have been eliminated in combination.
 
    CASH AND CASH EQUIVALENTS
 
    The Company considers all highly liquid debt investments with original
maturities of three months or less at the date of acquisition to be cash
equivalents. The carrying amounts approximate fair value.
 
    PROPERTY AND EQUIPMENT
 
    Property and equipment are stated at cost. Depreciation and amortization are
provided using the straight-line method over the estimated useful lives of the
various classes of depreciable assets, ranging from five to seven years. Fully
depreciated assets are retained in property and equipment until they are removed
from service. Maintenance and repairs are charged to expense, whereas renewals
and major replacements are capitalized. Gains and losses from dispositions are
included in operations.
 
    ADVERTISING
 
    Costs incurred for advertising are expensed when incurred.
 
    USE OF ESTIMATES IN THE PREPARATION OF FINANCIAL STATEMENTS
 
    The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.
 
    DENTAL PRACTICE MANAGEMENT CONSULTING AND LECTURE AND SEMINAR REVENUE
 
    The Company recognizes revenue from (i) consulting and (ii) lecture and
seminar services, in each case, at the time services are performed.
 
    INTERIM FINANCIAL INFORMATION
 
    The financial statements as of June 30, 1997 and for the six months ended
June 30, 1996 and 1997 have been prepared by the Company pursuant to the rules
and regulations of the Securities and Exchange Commission. Certain information
and footnote disclosures normally included in annual financial statements
prepared in accordance with generally accepted accounting principles have been
omitted pursuant to such rules and regulations. The financial statements should
be read in conjunction with the annual financial statements of the Company
included herein. In management's opinion, such interim financial statements
include all normal recurring adjustments considered necessary for a fair
presentation of such financial statements. Interim results are not necessarily
indicative of results for a full year.
 
                                      F-24
<PAGE>
                    PENTEGRA, LTD. AND NAPILI, INTERNATIONAL
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
2.  PROPERTY AND EQUIPMENT:
 
    Property and equipment were as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                                     DECEMBER 31,
                                                                 --------------------  JUNE 30, 1997
                                                                   1995       1996     -------------
                                                                 ---------  ---------   (UNAUDITED)
<S>                                                              <C>        <C>        <C>
Property and equipment:
  Equipment....................................................  $      22  $      27           29
  Furniture and fixtures.......................................        121        122          122
                                                                 ---------  ---------          ---
      Total property and equipment.............................        143        149          151
  Less accumulated depreciation................................       (120)      (128)        (132)
                                                                 ---------  ---------          ---
      Property and equipment, net..............................  $      23  $      21           19
                                                                 ---------  ---------          ---
                                                                 ---------  ---------          ---
</TABLE>
 
    Fully depreciated assets utilized in operations were approximately $95,000
at December 31, 1995 and 1996.
 
3.  INCOME TAXES:
 
    Pentegra, Ltd. and Napili file separate federal and state income tax
returns. The Company uses the liability method of accounting for income taxes.
Under this method, deferred taxes are determined based on the difference between
the financial reporting and tax bases of assets and liabilities and are measured
using the enacted marginal tax rates currently in effect when the differences
are reversed.
 
    Significant components of the Company's deferred tax liabilities and assets
at December 31, 1995 and 1996, respectively, were as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                             1995       1996
                                                           ---------  ---------
<S>                                                        <C>        <C>
Excess of book over tax basis in property and
  equipment..............................................  $      (5) $      (9)
                                                           ---------  ---------
  Total deferred tax liabilities.........................         (5)        (9)
Net operating loss carryforward..........................          4         --
Other....................................................          1          7
                                                           ---------  ---------
  Total deferred tax assets..............................          5          7
                                                           ---------  ---------
Net deferred tax asset (liability).......................  $      --         (2)
                                                           ---------  ---------
                                                           ---------  ---------
</TABLE>
 
                                      F-25
<PAGE>
                    PENTEGRA, LTD. AND NAPILI, INTERNATIONAL
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
3.  INCOME TAXES: (CONTINUED)
    Significant components of the provision for income taxes for the years ended
December 31, 1995 and 1996, respectively, were as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                                          1994       1995       1996
                                                                        ---------  ---------  ---------
<S>                                                                     <C>        <C>        <C>
Current tax expense:
  Federal.............................................................  $      --  $      --  $       5
  State...............................................................          4         --          1
                                                                        ---------  ---------  ---------
    Total current.....................................................          4         --          6
                                                                        ---------  ---------  ---------
Deferred tax expense (benefit):
  Federal.............................................................         19         (6)         1
  State...............................................................          3         (2)        --
                                                                        ---------  ---------  ---------
    Total deferred....................................................         22         (8)         1
                                                                        ---------  ---------  ---------
Total.................................................................  $      26  $      (8) $       7
                                                                        ---------  ---------  ---------
                                                                        ---------  ---------  ---------
</TABLE>
 
    The differences between the tax computed at the statutory federal tax rate
and the Company's provision (benefit) for income taxes for the years ended
December 31, 1994, 1995 and 1996, respectively, were as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                                       1994       1995       1996
                                                                     ---------  ---------  ---------
<S>                                                                  <C>        <C>        <C>
Tax at U.S. statutory rate.........................................  $      10  $    (10)  $      (8)
State income taxes, net of federal taxes...........................          2        (2)         (1)
Nondeductible expenses and other...................................         14          3         17
Other..............................................................         --          1         (1)
                                                                     ---------  ---------  ---------
                                                                     $      26  $     (8)  $       7
                                                                     ---------  ---------  ---------
                                                                     ---------  ---------  ---------
  Total effective tax rate.........................................         82%       (29%)        31%
                                                                     ---------  ---------  ---------
                                                                     ---------  ---------  ---------
</TABLE>
 
    Income taxes paid for the years ending December 31, 1994 and 1996 were
approximately $3,600 and $5,700, respectively. Income taxes paid during 1995
were insignificant.
 
4.  NOTES PAYABLE:
 
    Notes payable at December 31, 1996 and 1995 included notes issued by
financial institutions and individuals with varying maturities in 1999, which
are uncollateralized and guaranteed by a stockholder of the Company. Interest
rates on these notes ranged from 8% to 12%. The following are the scheduled
payments for the outstanding notes payable as of December 31, 1996 (in
thousands):
 
<TABLE>
<S>                                                                     <C>
1997..................................................................  $       7
1998..................................................................          7
1999..................................................................          2
                                                                              ---
                                                                        $      16
                                                                              ---
                                                                              ---
</TABLE>
 
    In 1995, the Company recognized a $7,000 gain on the early retirement of
debt.
 
                                      F-26
<PAGE>
                    PENTEGRA, LTD. AND NAPILI, INTERNATIONAL
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
5.  COMMITMENTS AND CONTINGENCIES:
 
    LEASE COMMITMENTS
 
    Future minimum lease payments under noncancelable operating leases with
remaining terms of one or more years consisted of the following at December 31,
1996 (in thousands):
 
<TABLE>
<S>                                                                    <C>
1997.................................................................  $     146
1998.................................................................        117
1999.................................................................          6
2000.................................................................          4
                                                                       ---------
Total minimum lease obligation.......................................  $     273
                                                                       ---------
                                                                       ---------
</TABLE>
 
    LITIGATION
 
    The Company is from time to time subject to claims and suits arising in the
ordinary course of operations. In the opinion of management, the ultimate
resolution of such pending legal proceedings will not have a material adverse
effect on the Company's financial position, results of operations or liquidity.
 
6.  CREDIT RISK AND FAIR VALUE OF FINANCIAL INSTRUMENTS:
 
    CREDIT RISK
 
    The Company grants customers credit in the normal course of business. The
Company does not obtain collateral on the extension of credit. Procedures are in
effect to monitor the creditworthiness of customers and appropriate allowances
are made to reduce accounts to their net realizable values.
 
    The Company maintains cash balances at various financial institutions.
Accounts at each institution are insured by the Federal Deposit Insurance
Corporation up to $100,000. The Company's accounts at these institutions may, at
times, exceed the federally insured limits. The Company has not experienced any
losses in such accounts.
 
    FAIR VALUE OF FINANCIAL INSTRUMENTS
 
    The following estimated fair values of financial instruments have been
determined by the Company using available market information and appropriate
valuation methodologies.
 
    The carrying amounts of cash and cash equivalents, accounts receivable and
accounts payable approximate fair values due to the short-term maturities of
these instruments. The carrying amounts of the Company's fixed-rate long-term
borrowings approximate fair value.
 
                                      F-27
<PAGE>
- ---------------------------------------------------------
                       ---------------------------------------------------------
- ---------------------------------------------------------
                       ---------------------------------------------------------
 
    NO DEALER, SALESPERSON OR OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATIONS IN CONNECTION WITH THE OFFERING OTHER
THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR MADE, SUCH OTHER
INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED ON AS HAVING BEEN AUTHORIZED
BY THE COMPANY OR ANY OF THE UNDERWRITERS. THIS PROSPECTUS DOES NOT CONSTITUTE
AN OFFER TO SELL OR A SOLICITATION OF AN OFFER TO BUY ANY SECURITIES OTHER THAN
THE SHARES OF COMMON STOCK TO WHICH IT RELATES OR ANY OFFER TO SELL, OR A
SOLICITATION OF AN OFFER TO BUY, TO ANY PERSON IN ANY JURISDICTION IN WHICH IT
IS UNLAWFUL TO MAKE SUCH OFFER OR SOLICITATION. NEITHER THE DELIVERY OF THIS
PROSPECTUS NOR ANY SALE MADE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE
ANY IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF THE COMPANY
SINCE THE DATE HEREOF OR THAT THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF
ANY DATE SUBSEQUENT TO ITS DATE.
 
                             ---------------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                       PAGE
                                                       -----
<S>                                                 <C>
Prospectus Summary................................           3
Risk Factors......................................           7
The Company.......................................          15
Use of Proceeds...................................          15
Dividend Policy...................................          15
Dilution..........................................          16
Capitalization....................................          17
Selected Financial Data...........................          18
Management's Discussion and Analysis of Financial
  Condition and Results of Operations.............          20
Business..........................................          23
Management........................................          32
Certain Transactions..............................          38
Security Ownership of Certain Beneficial Owners
  and Management..................................          41
Description of Capital Stock......................          42
Shares Eligible for Future Sale...................          44
Underwriting......................................          47
Legal Matters.....................................          49
Experts...........................................          49
Additional Information............................          49
Index to Financial Statements.....................         F-1
</TABLE>
 
    UNTIL             , 1997 (25 DAYS AFTER THE DATE OF THIS PROSPECTUS), ALL
DEALERS EFFECTING TRANSACTIONS IN THE COMMON STOCK OFFERED HEREBY, WHETHER OR
NOT PARTICIPATING IN THIS DISTRIBUTION, MAY BE REQUIRED TO DELIVER A
PROSPECTUS.THIS DELIVERY REQUIREMENT IS IN ADDITION TO THE OBLIGATIONS OF
DEALERS TO DELIVER A PROSPECTUS WHEN ACTING AS UNDERWRITERS AND WITH RESPECT TO
THEIR UNSOLD ALLOTMENTS OR SUBSCRIPTIONS.
 
                                2,500,000 SHARES
 
                          PENTEGRA DENTAL GROUP, INC.
 
                                  COMMON STOCK
 
                              -------------------
 
                                   PROSPECTUS
 
                                          , 1997
 
                             ---------------------
 
                                LEHMAN BROTHERS
                          RAUSHER PIERCE REFSNES, INC.
 
- ---------------------------------------------------------
                       ---------------------------------------------------------
- ---------------------------------------------------------
                       ---------------------------------------------------------
<PAGE>
                                    PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 13.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.
 
    The following table sets forth the expenses to be paid by the Company (other
than underwriting compensation expected to be incurred) in connection with the
offering described in this Registration Statement. All amounts are estimates,
except the SEC Registration Fee, the NASD Filing Fee and the Nasdaq National
Market Listing Fee.
 
<TABLE>
<S>                                                               <C>
SEC Registration Fee............................................  $  12,197
NASD Filing Fee.................................................      4,525
Nasdaq National Market Listing Fee..............................
Blue Sky Fees and Expenses......................................          *
Printing Costs..................................................          *
Legal Fees and Expenses.........................................          *
Accounting Fees and Expenses....................................          *
Transfer Agent and Registrar Fees and Expenses..................          *
                                                                  ---------
Miscellaneous...................................................          *
                                                                  ---------
  Total.........................................................  $       *
                                                                  ---------
                                                                  ---------
</TABLE>
 
- ---------
 
* To be provided by amendment.
 
ITEM 14.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
    DELAWARE GENERAL CORPORATION LAW
 
    Section 145(a) of the General Corporation Law of the State of Delaware (the
"DGCL") provides that a corporation may indemnify any person who was or is a
party or is threatened to be made a party to any threatened, pending or
completed action, suit or proceeding, whether civil, criminal, administrative or
investigative (other than an action by or in the right of the corporation) by
reason of the fact that the person is or was a director, officer, employee or
agent of the corporation, or is or was serving at the request of the corporation
as a director, officer, employee or agent of another corporation, partnership,
joint venture, trust or other enterprise, against expenses (including attorneys'
fees), judgments, fines and amounts paid in settlement actually and reasonably
incurred by the person in connection with such action, suit or proceeding if the
person acted in good faith and in a manner the person reasonably believed to be
in or not opposed to the best interests of the corporation, and, with respect to
any criminal action or proceeding, had no reasonable cause to believe the
person's conduct was unlawful. The termination of any action, suit or proceeding
by judgment, order, settlement, conviction, or upon a plea of NOLO CONTENDERE or
its equivalent, shall not, of itself, create a presumption that the person did
not act in good faith and in a manner which the person reasonably believed to be
in or not opposed to the best interests of the corporation, and, with respect to
any criminal action or proceeding, had reasonable cause to believe that the
person's conduct was unlawful.
 
    Section 145(b) of the DGCL states that a corporation may indemnify any
person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action or suit by or in the right of the
corporation to procure a judgment in its favor by reason of the fact that the
person is or was a director, officer, employee or agent of the corporation, or
is or was serving at the request of the corporation as a director, officer,
employee or agent of another corporation, partnership, joint venture, trust or
other enterprise against expenses (including attorneys' fees) actually and
reasonably incurred by the person in connection with the defense or settlement
of such action or suit if the person acted in good
 
                                      II-1
<PAGE>
faith and in a manner the person reasonably believed to be in or not opposed to
the best interests of the corporation and except that no indemnification shall
be made in respect of any claim, issue or matter as to which such person shall
have been adjudged to be liable to the corporation unless and only to the extent
that the Court of Chancery or the court in which such action or suit was brought
shall determine upon application that, despite the adjudication of liability but
in view of all the circumstances of the case, such person is fairly and
reasonably entitled to indemnity for such expenses which the Court of Chancery
or such other court shall deem proper.
 
    Section 145(c) of the DGCL provides that to the extent that a director,
officer, employee or agent of a corporation has been successful on the merits or
otherwise in defense of any action, suit or proceeding referred to in
subsections (a) and (b) of Section 145, or in defense of any claim, issue or
matter therein, he shall be indemnified against expenses (including attorneys'
fees) actually and reasonably incurred by him in connection therewith.
 
    Section 145(d) of the DGCL states that any indemnification under subsections
(a) and (b) of Section 145 (unless ordered by a court) shall be made by the
corporation only as authorized in the specific case upon a determination that
indemnification of the director, officer, employee or agent is proper in the
circumstances because he has met the applicable standard of conduct set forth in
subsections (a) and (b). Such determination shall be made (1) by a majority vote
of the directors who are not parties to such action, suit or proceeding, even
though less than a quorum, or (2) if there are no such directors or, if such
directors so direct, by independent legal counsel in a written opinion, or (3)
by the stockholders.
 
    Section 145(e) of the DGCL provides that expenses (including attorneys'
fees) incurred by an officer or director in defending any civil, criminal,
administrative or investigative action, suit or proceeding may be paid by the
corporation in advance of the final disposition of such action, suit or
proceeding upon receipt of an undertaking by or on behalf of such director or
officer to repay such amount if it shall ultimately be determined that he is not
entitled to be indemnified by the corporation as authorized in Section 145. Such
expenses (including attorneys' fees) incurred by other employees and agents may
be so paid upon such terms and conditions, if any, as the board of directors
deems appropriate.
 
    Section 145(f) of the DGCL states that the indemnification and advancement
of expenses provided by, or granted pursuant to, the other subsections of
Section 145 shall not be deemed exclusive of any other rights to which those
seeking indemnification or advancement of expenses may be entitled under any
bylaw, agreement, vote of stockholders or disinterested directors or otherwise,
both as to action in his official capacity and as to action in another capacity
while holding such office.
 
    Section 145(g) of the DGCL provides that a corporation shall have the power
to purchase and maintain insurance on behalf of any person who is or was a
director, officer, employee or agent of the corporation, or is or was serving at
the request of the corporation as a director, officer, employee or agent of
another corporation, partnership, joint venture, trust or other enterprise,
against any liability asserted against him and incurred by him in any such
capacity, or arising out of his status as such, whether or not the corporation
would have the power to indemnify him against such liability under the
provisions of Section 145.
 
    Section 145(j) of the DGCL states that the indemnification and advancement
of expenses provided by, or granted pursuant to, Section 145 shall, unless
otherwise provided when authorized or ratified, continue as to a person who has
ceased to be a director, officer, employee or agent and shall inure to the
benefit of the heirs, executors and administrators of such a person.
 
    CERTIFICATE OF INCORPORATION
 
    The Certificate of Incorporation of the Company provides that a director of
the Company shall not be personally liable to the Company or its stockholders
for monetary damages for breach of fiduciary duty as a director, except for
liability for unlawful payments of dividends or unlawful stock repurchases or
 
                                      II-2
<PAGE>
redemptions as provided for in Section 174 of the DGCL. If the DGCL is amended
to authorize the further elimination or limitation of the liability of
directors, then the liability of a director of the Company, in addition to the
limitation on personal liability described above, shall be limited to the
fullest extent permitted by the amended DGCL. Further, any repeal or
modification of such provision of the Certificate of Incorporation by the
stockholders of the Company shall be prospective only, and shall not adversely
affect any limitation on the personal liability of a director of the Company
existing at the time of such repeal or modification.
 
    BYLAWS
 
    The Bylaws of the Company provide that the Company will indemnify any
director or officer of the Company to the fullest extent permitted by applicable
law, from and against judgments, fines, amounts paid in settlement and expenses
(including attorneys' fees) whatsoever arising out of any event or occurrence
related to the fact that such person is or was a director or officer of the
Company and further provide that the Company may, but is not required to,
indemnify any employee or agent of the Company or a director, officer, employee
or agent of any other corporation, partnership, joint venture, trust, employee
benefit plan or other enterprise who is or was serving in such capacity at the
request of the Company; provided, however, that the Company is only required to
indemnify persons serving as directors and officers (and to the extent
authorized by the Board of Directors, such other persons) for the expenses
incurred in a proceeding if such person has met the standards of conduct that
make it permissible under the laws of the State of Delaware for the Company to
indemnify the claimant for the amount claimed. The Bylaws further provide that,
in the event of any threatened, or pending action, suit or proceeding in which
any director or officer of the Company is a party or is involved and that may
give rise to a right of indemnification under the Bylaws, following written
request by such person, the Company will promptly pay to such person amounts to
cover expenses reasonably incurred by such person in such proceeding in advance
of its final disposition upon such person undertaking to repay the advance if it
is ultimately determined that such person is not entitled to be indemnified by
the Company as provided in the Bylaws.
 
    UNDERWRITING AGREEMENT
 
    The Underwriting Agreement provides for the indemnification of the directors
and officers of the Company in certain circumstances.
 
    INSURANCE
 
    The Company intends to maintain liability insurance for the benefit of its
directors and officers.
 
ITEM 15.  RECENT SALES OF UNREGISTERED SECURITIES.
 
    The following information relates to securities issued or sold by the
Company within the last three years:
 
 (i) In connection with the formation of the Company, on February 22, 1997 the
     Company issued Common Stock to J. Michael Casas (200,000 shares), James L.
     Dunn, Jr. (100,000 shares), John G. Thayer (66,667 shares), Allen M.
     Gelwick (66,667 shares), Stephen P. Schmitt (33,333 shares), Dunn Family
     Trust, James L. Dunn, Jr., Trustee (33,333 shares), JoAn Majors (66,667
     shares), John W. Parsons (66,667 shares) and Richard M. Vento (33,333
     shares), at a purchase price per share of $0.01. On May 12, 1997, PII
     issued Class B Preferred to J. Michael Casas (66,667 shares), James L.
     Dunn, Jr. (33,334 shares) and John W. Parsons (33,334 shares), at a
     purchase price per share of $0.01. On May 22, 1997, the Company issued
     Common Stock to George M. Siegel (300,000 shares), Omer K. Reed, D.D.S.
     (150,000 shares), Gary S. Glatter (100,000 shares), Kelly W. Reed (150,000
     shares), Stephen E. Stapleton (33,333 shares) and Kimberlee K. Rozman
     (33,333 shares), at a purchase price per share of $0.01. On June 13, 1997,
     (i) PII issued Class A Preferred to Marie Adamo (50,000
 
                                      II-3
<PAGE>
     shares), Peter Anderson, Aurous, Ltd. (25,000 shares), Scott Bolding
     (25,000 shares), William Decker (100,000 shares), Peter Anderson, Dufo,
     Ltd. (25,000 shares), Daniel Goldman, Goldfam, Ltd. (75,000 shares), Peter
     Anderson, Laguna Enterprises, Ltd. (25,000 shares), James Landers (50,000
     shares), Gary Nagler (25,000 shares), Debra Novosad (50,000 shares), Edward
     Pitts, P/S Plan (125,000 shares), RTT Investments (150,000 shares), Candy
     Segall (25,000 shares), Annie Smith (50,000 shares) and Ken W. Smith
     (100,000 shares), at a purchase price per share of $1.00; (ii) PII issued
     Class B Preferred to Omer K. Reed, D.D.S. (37,500 shares), Gary S. Glatter
     (37,500 shares), George M. Siegel (37,500 shares), Stephen E. Stapleton
     (12,500 shares), Mack E. Greder, D.D.S. (25,000 shares), Roger Allen Kay,
     D.D.S. (25,000 shares), Debra Novosad (50,000 shares), Bruce A. Kanehl,
     D.D.S. (25,000 shares), George King, D.D.S. (25,000 shares), Brian K.
     Kniff, D.D.S. (25,000 shares), Richard W. Mains, D.D.S., RBM Trust (25,000
     shares), James W. Medlock, D.D.S. (25,000 shares), Thomas L. Mullooly,
     D.D.S. (25,000 shares), Richard H. Fettig, D.D.S. (25,000 shares), Marvin
     V. Cavallino, D.D.S. (50,000 shares), Alan H. Gerbholz, D.D.S. (25,000
     shares), Victor H. Burdick, D.D.S. (25,000 shares), Steve Anderson, D.D.S.
     (25,000 shares) and James P. Allen, D.D.S. (25,000 shares), at a purchase
     price per share of $1.00; and (iii) the Company issued Common Stock to Omer
     K. Reed, D.D.S. (7,500 shares), Gary S. Glatter (7,500 shares), George M.
     Siegel (7,500 shares), Stephen E. Stapleton (2,500 shares), Mack E. Greder,
     D.D.S. (5,000 shares), Roger Allen Kay, D.D.S. (5,000 shares), Marie Adamo
     (10,000 shares), Peter Anderson, Aurous, Ltd. (5,000 shares), Scott Bolding
     (5,000 shares), William Decker (20,000 shares), Peter Anderson, Dufo, Ltd.
     (5,000 shares), Daniel Goldman, Goldfam, Ltd. (35,000 shares), Peter
     Anderson, Laguna Enterprises, Ltd. (5,000 shares), James Landers (10,000
     shares), Gary Nagler (5,000 shares), Debra Novosad (20,000 shares), Edward
     Pitts, P/S Plan (38,333 shares), RTT Investments (30,000 shares), Candy
     Segall (5,000 shares), Annie Smith (10,000 shares), Ken W. Smith (20,000
     shares), Marvin V. Cavallino, D.D.S. (10,000 shares), Bruce A. Kanehl,
     D.D.S. (5,000 shares), Richard H. Fettig, D.D.S. (5,000 shares), Victor H.
     Burdick, D.D.S. (5,000 shares), Thomas L. Mullooly, D.D.S. (5,000 shares),
     James W. Medlock, D.D.S. (5,000 shares), Alan H. Gerbholz, D.D.S. (5,000
     shares), Richard W. Mains, D.D.S., RBM Trust (5,000 shares), Brian K.
     Kniff, D.D.S. (5,000 shares), George King, D.D.S. (5,000 shares), Steve
     Anderson, D.D.S. (5,000 shares) and James P. Allen, D.D.S. (5,000 shares),
     at a purchase price of $0.01 per share. On September 1, 1997, the Company
     issued 66,667 shares of Common Stock to Sam H. Carr at a purchase price of
     $0.01 per share. On October 8, 1997, the Company issued 6,667 shares of
     Common Stock to Manhattan Group Funding and 13,333 shares of Common Stock
     to Daniel A. Bock, at a purchase price of $0.01 per share.
 
 (ii)
 
ITEM 16.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.
 
    (a) Exhibits.
 
<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER                                                           DESCRIPTION
- -----------             -------------------------------------------------------------------------------------------------
<S>          <C>        <C>
      1.1*      --      Form of Underwriting Agreement.
 
       2.1      --      Form of Asset Contribution Agreement between Pentegra Dental Group, Inc. and a sole
                          proprietorship
 
       2.2      --      Form of Asset Contribution Agreement between Pentegra Dental Group, Inc. and a partnership
 
       2.3      --      Form of Asset Contribution Agreement between Pentegra Dental Group, Inc. and an entity
 
       2.4      --      Form of Agreement and Plan of Reorganization between Pentegra Dental Group, Inc. and an entity
</TABLE>
 
                                      II-4
<PAGE>
<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER                                                           DESCRIPTION
- -----------             -------------------------------------------------------------------------------------------------
<S>          <C>        <C>
       2.5      --      Exchange Agreement dated July 31, 1997 among Pentegra Investments, Inc., Pentegra Dental Group,
                          Inc. and the stockholders named therein
 
       2.6      --      Asset Contribution Agreement dated as of August 20, 1997 among Pentegra Dental Group, Inc.,
                          Pentegra, Ltd., Napili International and Omer K. Reed, D.D.S.
                        The schedules and exhibits to the foregoing acquisition agreements have not been filed as
                          exhibits to this Registration Statement. Pursuant to Item 601(b)(2) of Regulation S-K, Pentegra
                          Dental Group, Inc. agrees to furnish a copy of such schedules and exhibits to the Commission
                          upon request.
 
       3.1      --      Restated Certificate of Incorporation of Pentegra Dental Group, Inc.
 
       3.2      --      Bylaws of Pentegra Dental Group, Inc.
 
      4.1*      --      Form of certificate evidencing ownership of Common Stock of Pentegra Dental Group, Inc.
 
       4.2      --      Form of Registration Rights Agreement for Owners of Founding Affiliated Practices
 
       4.3      --      Registration Rights Agreement dated September 30, 1997 between Pentegra Dental Group, Inc. and
                          the stockholders named therein
 
      5.1*      --      Opinion of Jackson Walker L.L.P.
 
      10.1      --      Pentegra Dental Group, Inc. 1997 Stock Compensation Plan
 
      10.2      --      Employment Agreement dated July 31, 1997 between Pentegra Dental Group, Inc. and Omer K. Reed,
                          D.D.S.
 
      10.3      --      Employment Agreement dated July 1, 1997 between Pentegra Dental Group, Inc. and Gary S. Glatter
 
      10.4      --      Employment Agreement dated July 12, 1997 between Pentegra Dental Group, Inc. and John Thayer
 
      10.5      --      Employment Agreement dated September 1, 1997 between Pentegra Dental Group, Inc. and Sam H. Carr
 
      10.6      --      Employment Agreement dated July 12, 1997 between Pentegra Dental Group, Inc. and James Dunn, Jr.
 
      10.7      --      Employment Agreement dated July 12, 1997 between Pentegra Dental Group, Inc. and Kimberlee K.
                          Rozman
 
      10.8      --      Form of Service Agreement
 
      11.1      --      Computation of Earnings Per Share
 
      23.1      --      Consent of Coopers & Lybrand, L.L.P.
 
     23.2*      --      Consent of Jackson Walker L.L.P. (contained in Exhibit 5)
 
      23.3      --      Consents of Director Nominees.
 
      24.1      --      Power of Attorney (contained on the signature page of this Registration Statement).
 
     27.1*      --      Financial Data Schedule.
</TABLE>
 
- ---------
 
* To be filed by amendment.
 
    (b) Financial Statement Schedules.
 
    All schedules are omitted because they are not applicable or because the
required information is contained in the Financial Statements or Notes thereto.
 
                                      II-5
<PAGE>
ITEM 17.  UNDERTAKINGS.
 
    The undersigned registrant hereby undertakes as follows:
 
        (1) To provide to the Underwriters at the closing specified in the
    Underwriting Agreement certificates in such denominations and registered in
    such names as required by the Underwriters to permit prompt delivery to each
    purchaser.
 
        (2) Insofar as indemnification for liabilities arising under the
    Securities Act may be permitted to directors, officers and controlling
    persons of the registrant pursuant to the provisions described in Item 14,
    or otherwise, the registrant has been advised that in the opinion of the
    Commission such indemnification is against public policy as expressed in the
    Securities Act and is, therefore, unenforceable. In the event that a claim
    for indemnification against such liabilities (other than the payments by the
    registrant of expenses incurred or paid by a director, officer or
    controlling person of the registrant in the successful defense of any
    action, suit or proceeding) is asserted by such director, officer or
    controlling person in connection with the securities being registered, the
    registrant will, unless in the opinion of its counsel the matter has been
    settled by controlling precedent, submit to a court of appropriate
    jurisdiction the question whether such indemnification by it is against
    public policy as expressed in the Securities Act and will be governed by the
    final adjudication of such issue.
 
        (3) That, for the purposes of determining any liability under the
    Securities Act, the information omitted from the form of prospectus filed as
    part of this registration statement in reliance upon Rule 430A and contained
    in a form of prospectus filed by the registrant pursuant to Rule 424(b)(1)
    or (4) or 497(h) under the Securities Act shall be deemed to be part of this
    registration statement as of the time it was declared effective.
 
        (4) That, for the purpose of determining any liability under the
    Securities Act, each post-effective amendment that contains a form of
    prospectus shall be deemed to be a new registration statement relating to
    the securities offered therein, and the offering of such securities at that
    time shall be deemed to be the initial bona fide offering thereof.
 
                                      II-6
<PAGE>
                                   SIGNATURES
 
    Pursuant to the requirements of the Securities Act of 1933, as amended,
Pentegra Dental Group, Inc. has duly caused this Registration Statement to be
signed on its behalf by the undersigned, thereunto duly authorized, in the City
of Houston, State of Texas, on October 10, 1997.
 
<TABLE>
<S>                             <C>  <C>
                                PENTEGRA DENTAL GROUP, INC.
 
                                By:             /s/ GARY S. GLATTER
                                     -----------------------------------------
                                                  Gary S. Glatter
                                       PRESIDENT AND CHIEF EXECUTIVE OFFICER
</TABLE>
 
    Each person whose signature appears below hereby appoints Kimberlee K.
Rozman and James L. Dunn, Jr. and each of them, each of whom may act without
joinder of the other, as his true and lawful attorneys-in-fact and agents, with
full power of substitution and resubstitution, for him and in his name, place
and stead, in any and all capacities, to execute in the name of each such person
who is then an officer or director of the Registrant, and to file, any
amendments (including post-effective amendments) to this Registration Statement
and any registration statement for the same offering filed pursuant to Rule 462
under the Securities Act of 1933, as amended, and to file the same, with all
exhibits thereto and all other documents in connection therewith, with the
Commission, granting unto said attorneys-in-fact and agents full power and
authority to do and perform each and every act and thing appropriate or
necessary to be done, as fully and for all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents or their substitute or substitutes may lawfully do
or cause to be done by virtue hereof.
 
    Pursuant to the requirements of the Securities Act of 1933, as amended, this
Registration Statement has been signed by the following persons in the
capacities indicated on October 10, 1997.
 
          SIGNATURES                                TITLE
- ------------------------------  ----------------------------------------------
 
     /s/ GARY S. GLATTER
- ------------------------------  President, Chief Executive Officer and
       Gary S. Glatter            Director (Principal Executive Officer)
 
       /s/ SAM H. CARR          Senior Vice President and Chief Financial
- ------------------------------    Officer (Principal Financial and Accounting
         Sam H. Carr              Officer)
 
   /s/ OMER K. REED, D.D.S.
- ------------------------------  Chairman of the Board
     Omer K. Reed, D.D.S.
 
     /s/ J. MICHAEL CASAS
- ------------------------------  Director
       J. Michael Casas
 
     /s/ ALLEN M. GELWICK
- ------------------------------  Director
       Allen M. Gelwick
 
     /s/ GEORGE M. SIEGEL
- ------------------------------  Director
       George M. Siegel
 
    /s/ JAMES L. DUNN, JR.
- ------------------------------  Director
      James L. Dunn, Jr.
 
                                      II-7

<PAGE>

                                                                   EXHIBIT 2.1


                         FORM OF ASSET CONTRIBUTION AGREEMENT

                                     BY AND AMONG


                            PENTEGRA DENTAL GROUP, INC., 


                                         and

                ______________________________ [sole proprietorship] 

<PAGE>
                                  TABLE OF CONTENTS

                                                                            Page
                                                                            ----
Section 1.  TERMS OF THE CONTRIBUTION
    1.2   CONTRIBUTION OF ASSETS.............................................  1
    1.3   EXCLUDED ASSETS....................................................  1
    1.4   PURCHASE PRICE; ASSUMPTION OF LIABILITIES..........................  2
    1.5   SUBSEQUENT ACTIONS.................................................  2

Section 2.  REPRESENTATIONS AND WARRANTIES OF DENTIST.
    2.1   EXISTENCE..........................................................  2
    2.2   POWER AND AUTHORITY................................................  2
    2.3   PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS..................  3
    2.4   CONSENTS...........................................................  3
    2.5   [INTENTIONALLY DELETED]............................................  3
    2.6   [INTENTIONALLY DELETED]............................................  3
    2.7   DENTIST'S FINANCIAL INFORMATION....................................  3
    2.8   LEASES.............................................................  3
    2.9   CONDITION OF ASSETS................................................  3
    2.10  TITLE TO AND ENCUMBRANCES ON PROPERTY..............................  3
    2.11  INVENTORIES........................................................  3
    2.12  INTELLECTUAL PROPERTY RIGHTS; NAMES................................  3
    2.13  DIRECTORS AND OFFICERS; PAYROLL INFORMATION; EMPLOYEES.............  4
    2.14  LEGAL PROCEEDINGS..................................................  4
    2.15  CONTRACTS..........................................................  4
    2.16  SUBSEQUENT EVENTS..................................................  5
    2.17  TAXES..............................................................  6
    2.18  COMMISSIONS AND FEES...............................................  6
    2.19  LIABILITIES; DEBT..................................................  6
    2.20  INSURANCE POLICIES.................................................  6
    2.21  EMPLOYEE BENEFIT PLANS.............................................  6
    2.22  ADVERSE AGREEMENTS.................................................  7
    2.23  COMPLIANCE WITH LAWS IN GENERAL....................................  7
    2.24  THIRD PARTY PAYORS.................................................  7
    2.25  NO UNTRUE REPRESENTATIONS..........................................  7
    2.26  BANKING RELATIONS..................................................  7
    2.27  OWNERSHIP INTERESTS OF INTERESTED PERSONS; COMPETITORS.............  8
    2.28  PAYORS.............................................................  8

Section 3.  REPRESENTATIONS AND WARRANTIES OF PENTEGRA
    3.1   CORPORATE EXISTENCE: GOOD STANDING.................................  8
    3.2   POWER AND AUTHORITY................................................  8
    3.3   COMMISSIONS AND FEES...............................................  8
    3.4   CAPITAL STOCK......................................................  8
    3.5   NO UNTRUE REPRESENTATIONS..........................................  8

Section 4.  COVENANTS OF DENTIST.
    4.1   CONSUMMATION OF AGREEMENT..........................................  9
    4.2   BUSINESS OPERATIONS................................................  9
    4.3   ACCESS AND NOTICE..................................................  9
    4.4   APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS................  9

                                      -i- 
<PAGE>

    4.5   ACQUISITION PROPOSALS..............................................  9

    4.6   FUNDING OF ACCRUED EMPLOYEE BENEFITS...............................  9
    4.7   EMPLOYEE MATTERS...................................................  9
    4.8   [INTENTIONALLY OMITTED]............................................ 10
    4.9   REQUIREMENTS TO EFFECT ACQUISITION................................. 10
    4.10  ACCOUNTING AND TAX MATTERS......................................... 10
    4.11  WAIVER OF BULK TRANSFER COMPLIANCE................................. 10
    4.12  LEASE.............................................................. 10
    4.13  HIRING OF EMPLOYEES................................................ 10
    4.14  EMPLOYEE BENEFIT PLANS............................................. 10
    4.15  INSURANCE.......................................................... 10
    4.16  FORMATION OF THE PRACTICE.......................................... 10
    4.17  CORPORATE RECORDS.................................................. 11
    4.18  POWER AND AUTHORITY FOR TRANSACTIONS............................... 11
    4.19  NO BUSINESS........................................................ 11
    4.20  COMPLIANCE WITH LAWS............................................... 11

Section 5.  COVENANTS OF PENTEGRA
    5.1   CONSUMMATION OF AGREEMENT.......................................... 11
    5.2   APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS................ 11

Section 6.  COVENANTS OF PENTEGRA AND DENTIST
    6.1   FILINGS; OTHER ACTIONS............................................. 12

Section 7.  PENTEGRA CONDITIONS PRECEDENT
    7.1   REPRESENTATIONS AND WARRANTIES..................................... 12
    7.2   COVENANTS AND CONDITIONS........................................... 12
    7.3   PROCEEDINGS........................................................ 12
    7.4   NO MATERIAL ADVERSE CHANGE......................................... 12
    7.5   DUE DILIGENCE REVIEW............................................... 12
    7.6   APPROVAL BY THE BOARD OF DIRECTORS................................. 12
    7.7   SERVICE AGREEMENT; GUARANTY AGREEMENT.............................. 13
    7.8   EMPLOYMENT ARRANGEMENTS............................................ 13
    7.9   CONSENTS AND APPROVALS............................................. 13
    7.10  CLOSING DELIVERIES................................................. 13
    7.11  DEBT AND RECEIVABLES............................................... 13
    7.12  INSURANCE.......................................................... 13
    7.13  NO CHANGE IN WORKING CAPITAL....................................... 13
    7.14  SECURITIES APPROVAL................................................ 13

Section 8.  DENTIST'S CONDITIONS PRECEDENT
    8.1   REPRESENTATIONS AND WARRANTIES..................................... 13
    8.2   COVENANTS AND CONDITIONS........................................... 13
    8.3   PROCEEDINGS........................................................ 13
    8.4   CLOSING DELIVERIES................................................. 13
    8.5   SECURITIES APPROVAL................................................ 14

Section 9.  CLOSING DELIVERIES
    9.1   DELIVERIES OF DENTIST.............................................. 14
    9.2   DELIVERIES OF PENTEGRA............................................. 15


                                      -ii- 
<PAGE>

Section 10.  NATURE AND SURVIVAL OF REPRESENTATIONS AND WARRANTIES;
             INDEMNIFICATION
    10.1  NATURE AND SURVIVAL................................................ 15
    10.2  INDEMNIFICATION BY PENTEGRA........................................ 16
    10.3  INDEMNIFICATION BY DENTIST......................................... 16
    10.4  INDEMNIFICATION PROCEDURE.......................................... 17
    10.5  RIGHT OF SETOFF.................................................... 18

Section 11.  TERMINATION

Section 12.  TRANSFER REPRESENTATIONS
    12.1  TRANSFER RESTRICTIONS.............................................. 18
    12.2  INVESTMENTS; COMPLIANCE WITH LAW................................... 19
    12.3  ECONOMIC RISK; SOPHISTICATION...................................... 19

Section 13.  NONDISCLOSURE OF CONFIDENTIAL INFORMATION

Section 14.  MISCELLANEOUS
    14.1  TAX COVENANT....................................................... 19
    14.2  NOTICES............................................................ 20
    14.3  FURTHER ASSURANCES................................................. 20
    14.4  EACH PARTY TO BEAR COSTS........................................... 20
    14.5  PUBLIC DISCLOSURES................................................. 20
    14.6  GOVERNING LAW...................................................... 21
    14.7  CAPTIONS........................................................... 21
    14.8  INTEGRATION OF EXHIBITS............................................ 21
    14.9  ENTIRE AGREEMENT/AMENDMENT......................................... 21
    14.10 COUNTERPARTS....................................................... 21
    14.11 BINDING EFFECT/ASSIGNMENT.......................................... 21
    14.12 NO RULE OF CONSTRUCTION............................................ 21
    14.13 COSTS OF ENFORCEMENT............................................... 21
    14.14 PRORATIONS......................................................... 21
    14.15 AMENDMENTS; WAIVERS................................................ 21
    14.16 ARBITRATION........................................................ 22
    14.17 SEVERABILITY....................................................... 23





                                      -iii- 
<PAGE>

                             ASSET CONTRIBUTION AGREEMENT


    This ASSET CONTRIBUTION AGREEMENT (this "Agreement"), made and executed as
of  ________________, 1997, is by and among PENTEGRA  DENTAL GROUP, INC., a
Delaware corporation ("Pentegra") and _________________________________
("Dentist"). 


                                     WITNESSETH:


    WHEREAS, Dentist operates a dental practice ("Business") and Pentegra is
engaged in the business of  managing certain non-dentistry aspects of dental
practices; 

    WHEREAS, Dentist desires to contribute to Pentegra, and Pentegra desires to
receive from Dentist, certain assets of Dentist; 

    WHEREAS, Pentegra or its affiliated designee has entered into or intends to
enter into Agreements and Plans of Reorganization, Asset Contribution Agreements
and other acquisition agreements (collectively, the "Other Agreements") with
such persons or entities or the stockholders of such entities listed on EXHIBIT
A (together with Dentist, the "Target Companies");

    WHEREAS, it is intended for Federal income tax purposes that the transfers
contemplated by this Agreement, the Other Agreements and Pentegra's initial
public offering ("Initial Public Offering") of shares of its common stock, par
value $.01 per share ("Pentegra Common Stock") shall qualify as an exchange
within the meaning of Section 351 of the Internal Revenue Code of 1986, as
amended ("IRC" or "Code");

    WHEREAS, the consummation of the transfers to Pentegra pursuant to this
Agreement is intended to occur in connection with, and is conditioned upon, the
simultaneous consummation of the transfers contemplated by the Other Agreements
and the Initial Public Offering.
 .
    NOW THEREFORE, in consideration of the mutual promises and covenants
hereinafter set forth, and for other good and valuable consideration, the
sufficiency of which are hereby acknowledged, the parties agree as follows:


SECTION

1.  TERMS OF THE CONTRIBUTION.

    1.1  THE CLOSING.  The closing of the transactions contemplated hereby
shall take place at 10:00 am local time, at the offices of Jackson & Walker,
L.L.P., on the day on which the Initial Public Offering of Pentegra Common Stock
is consummated.  The date on which the Closing occurs is hereinafter referred to
as the "Closing Date". 

    1.2  CONTRIBUTION OF ASSETS.  Subject to and upon the terms and conditions
contained herein, on the Closing Date, Dentist shall convey, transfer, deliver
and assign to Pentegra or any affiliate of Pentegra designated by Pentegra all
of Dentist's right, title and interest in and to those certain assets described
on EXHIBIT 1.1 attached hereto (individually, "Asset", and collectively
"Assets"), free and clear of all obligations, security interests, claims, liens
and encumbrances, except as specifically assumed, or taken subject to, by
Pentegra pursuant to SECTION 1.3(b) hereof. 

    1.3  EXCLUDED ASSETS.  There shall be excluded from the Assets to be
transferred and contributed hereunder, and Dentist shall retain all of its
right, title and interest in and to, the assets not specifically transferred
hereunder, including without limitation, the assets described on EXHIBIT 1.2
(the "Excluded Assets").

                                       1 
<PAGE>

    1.4  PURCHASE PRICE; ASSUMPTION OF LIABILITIES.  As consideration for the
Assets and the representations, warranties and agreements of Dentist contained
herein, Pentegra shall, on the Closing Date:

         (a)  Cause to be transferred to Dentist the consideration specified in
ANNEX I attached hereto (the "Acquisition Consideration"); and.  

         (b)  Except as otherwise provided herein, assume and perform or
discharge on or after the Closing Date, the contracts, leases, obligations,
commitments, liabilities and indebtedness of Dentist listed on EXHIBIT 1.3(b)
attached hereto to the extent that such obligations, commitments, liabilities
and indebtedness  are current and not otherwise in default. (the "Assumed
Liabilities").  Notwithstanding any contrary provision contained herein, 
Pentegra shall not be deemed to have assumed, nor shall Pentegra assume:  (i)
any liability, commitment or obligation or trade payable or indebtedness not
specifically disclosed on EXHIBIT 1.3(b), (ii) any liability set forth on
EXHIBIT 1.3(b) which may be incurred by reason of any breach of or default under
such contracts, leases, commitments or obligations which occurred on or before
the Closing Date; (iii) any liability for any employee benefits payable to
employees of Dentist, including, but not limited to, liabilities arising under
any Dentist Plan (as defined in SECTION 2.21 hereof); (iv) any liability based
upon or arising out of a violation of any antitrust or similar restraint-of-
trade laws by Dentist, including, without limiting the generality of the
foregoing, any such antitrust liability which may arise in connection with
agreements, contracts, commitments or orders for the sale of goods or provision
of services by Dentist reflected on the books of Dentist at or prior to the
Closing Date; (v) any liability based upon or arising out of any tortious or
wrongful actions of Dentist, any licensed professional employee or independent
contractor of Dentist, (vi) any liability for the payment of any taxes of
Dentist, including without limitation, sales, use and other transfer taxes and
income  taxes arising from or by reason of the transactions contemplated by this
Agreement; (vii) any indebtedness secured by deeds of trust or mortgages on real
property; nor (viii) any liability incurred or to be incurred pursuant to any
malpractice or other suits or actions pending against Dentist. 

    1.5  SUBSEQUENT ACTIONS.  If, at any time after the Closing Date, Pentegra
shall consider or be advised that any deeds, bills of sale, assignments,
assurances or any other actions or things are necessary or desirable to vest,
perfect or confirm of record or otherwise in Pentegra its right, title or
interest in, to or under any of the Assets or otherwise to carry out this
Agreement, in return for the consideration set forth in this Agreement, the
Dentist shall execute and deliver all such deeds, bills of sale, assignments and
assurances and take and do all such other actions and things as may be necessary
or desirable to vest, perfect or confirm any and all right, title and interest
in, to and under the Assets in Pentegra or otherwise to carry out this
Agreement.


SECTION 2.  REPRESENTATIONS AND WARRANTIES OF DENTIST.

    Dentist hereby represents and warrants to Pentegra as follows:

    2.1  EXISTENCE.  Dentist is a sole proprietorship under the laws of the
State of __________________.  Dentist does not have any assets, employees or
offices in any state other than the state set forth in the first sentence of
this SECTION 2.1. 

    2.2  POWER AND AUTHORITY. Dentist has the legal capacity to enter into and
perform this Agreement and the other agreements to be executed and delivered in
connection herewith.  This Agreement and all agreements and documents executed
and delivered in connection herewith have been, or will be as of the Closing
Date, duly executed and delivered by Dentist and constitute or will constitute
the legal, valid and binding obligations of Dentist in accordance with their
respective terms, except as may be limited by applicable bankruptcy, insolvency
or similar laws affecting creditors' rights generally or the availability of
equitable remedies.  The execution and delivery of this Agreement, and the
agreements executed and delivered pursuant to this Agreement or to be executed
and delivered on the Closing Date, do not, and, subject to the receipt of
consents described on EXHIBIT 2.4, the consummation of the actions contemplated
hereby will not, result in the acceleration of, any obligation under any
mortgage, lien, lease, agreement, rent, instrument, order, arbitration award,
judgment or decree to which Dentist is a party or by which Dentist is bound, or
violate any material restrictions of any kind to which Dentist is subject, or
result in any lien or encumbrance on any of Dentist's assets or the Assets.

                                       2 
<PAGE>

    2.3  PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS.  All building or
other permits, certificates of occupancy, concessions, grants, franchises,
licenses, certificates of need and other governmental authorizations and
approvals required for the conduct of the Business or the use of the Assets, or
waivers thereof, have been duly obtained and are in full force and effect and
are described on EXHIBIT 2.3.  There are no proceedings pending or, to the
knowledge of Dentist, threatened, which may result in the revocation,
cancellation or suspension, or any adverse modification, of any such licenses or
permits. 

    2.4  CONSENTS.  Except as set forth on EXHIBIT 2.4, no consent, 
authorization, permit, license or filing with any governmental authority, any
lender, lessor, any manufacturer or supplier or any other person or entity is
required to authorize, or is required in connection with, the execution,
delivery and performance of this Agreement and the agreements and documents
contemplated hereby on the part of Dentist. 

    2.5  [INTENTIONALLY DELETED].  

    2.6  [INTENTIONALLY DELETED].  

    2.7  DENTIST'S FINANCIAL INFORMATION.  Dentist has heretofore furnished
Pentegra with copies of its unaudited balance sheet and related unaudited
statements of income, retained earnings and cash flows for its prior two full
fiscal years, as well as copies of its unaudited balance sheet as of December
31, 1996 and June 30, 1997 (collectively, the "Balance Sheet" and the latest
date thereof shall be referred to as the "Balance Sheet Date") and any related
unaudited statements of income, retained earnings, schedule of accounts
receivable, accounts payable and accrued liabilities, and cash flows for the
twelve months then ended (collectively, with the related notes thereto, the
"Financial Statements").  The Financial Statements fairly present the financial
condition and results of operations of Dentist as of the dates and for the
periods indicated and reflect all fixed and contingent liabilities of Dentist.

    2.8  LEASES.  EXHIBIT 2.8 attached hereto sets forth a list of all leases
pursuant to which Dentist leases, as lessor or lessee, real or personal property
used in operating the Business, related to the Assets or otherwise.  All such
leases listed on EXHIBIT 2.8 are valid and enforceable in accordance with their
respective terms, and there is not under any such lease any existing default by
Dentist, as lessor or lessee, or any condition or event of which Dentist has
knowledge which with notice or lapse of time, or both, would constitute a
default, in respect of which Dentist has not taken adequate steps to cure such
default or to prevent a default from occurring.

    2.9  CONDITION OF ASSETS.   All of the Assets are in good condition and
repair subject to normal wear and tear and conform with all applicable
ordinances, regulations and other laws, and Dentist has no knowledge of any
latent defects therein.

    2.10 TITLE TO AND ENCUMBRANCES ON PROPERTY.  Dentist has good, valid and
marketable title to all of the Assets, free and clear of any liens, claims,
charges, exceptions or encumbrances, except for those, if any, which are set
forth in EXHIBIT 2.10 attached hereto.  Dentist shall cause all encumbrances set
forth on EXHIBIT 2.10 (other than those encumbrances indicated on EXHIBIT
1.3(b)) to be released or terminated prior to the Closing Date and evidence of
such releases of liens and claims shall be provided to Pentegra on the Closing
Date and the Assets shall not be used to satisfy such liens, claims or
encumbrances.

    2.11 INVENTORIES.    All of the Assets constituting inventory are owned or
used by Dentist, are in good, current, standard and merchantable condition and
are not obsolete or defective.

    2.12 INTELLECTUAL PROPERTY RIGHTS; NAMES.  Except as set forth on EXHIBIT
2.12, Dentist has no right, title or interest in or to patents, patent rights,
corporate names, assumed names, manufacturing processes, trade names,
trademarks, service marks, inventions, specialized treatment protocols,
copyrights, formulas and trade secrets or similar items.   Set forth in EXHIBIT
2.12 is a listing of all names of all predecessor companies of Dentist,
including the names of any entities from whom Dentist previously acquired
significant assets.  Except for off-the-shelf software licenses and except as
set forth on EXHIBIT 2.12, Dentist is not a licensee in respect of any patents,
trademarks, service marks, trade names, copyrights or applications therefor, or
manufacturing processes, formulas or trade secrets or similar items and 

                                       3 
<PAGE>

no such licenses are necessary for the conduct of the Business or the use of 
the Assets. No claim is pending or has been made to the effect that the 
Assets or the present or past operations of Dentist in connection with the 
Assets or Business infringe upon or conflict with the asserted rights of 
others to any patents, patent rights, manufacturing processes, trade names, 
trademarks, service marks, inventions, licenses, specialized treatment 
protocols, copyrights, formulas, know-how and trade secrets.  Dentist has the 
sole and exclusive right to use all Assets constituting proprietary rights 
without infringing or violating the rights of any third parties and no 
consents of any third parties are required for the use thereof by Pentegra. 

    2.13 DIRECTORS AND OFFICERS; PAYROLL INFORMATION; EMPLOYEES.  Set forth on
EXHIBIT 2.13 attached hereto is a true and complete list, as of the date of this
Agreement of: (a) the most recent payroll report of Dentist, showing all current
employees of Dentist and their current levels of compensation, (b) promised
increases in compensation of employees of Dentist that have not yet been
effected, (c) oral or written employment agreements, consulting agreements or
independent contractor agreements (and all amendments thereto) to which Dentist
is a party, copies of which have been delivered to Pentegra, and (d) all
employee manuals, materials, policies, procedures and work-related rules, copies
of which have been delivered to Pentegra.  Dentist is in compliance with all
applicable laws, rules, regulations and ordinances respecting employment and
employment practices.  Dentist has not engaged in any unfair labor practice. 
There are no unfair labor practices charges or complaints pending or threatened
against Dentist, and Dentist has never been a party to any agreement with any
union, labor organization or collective bargaining unit.

    2.14 LEGAL PROCEEDINGS.  Neither Dentist nor the Business nor any of the
Assets is subject to any pending, nor does Dentist have knowledge of any
threatened, litigation, governmental investigation, condemnation or other
proceeding against or relating to or affecting Dentist, the Business, the Assets
or the transactions contemplated by this Agreement, and, to the knowledge of
Dentist, no basis for any such action exists, nor is there any legal impediment
of which Dentist has knowledge to the continued operation of its business or the
use of the Assets in the ordinary course, subject to consents set forth on
EXHIBIT 2.4. 

    2.15 CONTRACTS.  Dentist has delivered to Pentegra true copies of all
written, and disclosed to Pentegra all oral, outstanding contracts, obligations
and commitments of Dentist ("Contracts"), entered into in connection with and
related to the Assets or the Business, all of which are listed or incorporated
by reference on EXHIBIT 2.8 (in the case of leases), EXHIBIT 2.13 (in the case
of employment agreements) and EXHIBIT 2.15 (in the case of Contracts other than
leases) attached hereto.  Except as otherwise indicated on such Exhibits, all of
such Contracts are valid, binding and enforceable in accordance with their terms
and are in full force and effect, and no defenses, offsets or counterclaims have
been asserted or may be made by any party thereto.  Except as indicated on such
Exhibits, there is not under any such Contract any existing default by Dentist,
or any condition or event of which Dentist has knowledge which with notice or
lapse of time, or both, would constitute a default.  Dentist has no knowledge
of any default by any other party to such Contracts.  Dentist has not received
notice of the intention of any party to any Contract to cancel or terminate any
Contract and have no reason to believe that any amendment or change to any
Contract is contemplated by any party thereto.  Other than those contracts,
obligations and commitments listed on EXHIBIT 2.8, EXHIBIT 2.13 and EXHIBIT
2.15, Dentist is not a party to any material written or oral agreement contract,
lease or arrangement, including without limitation, any:

         (a)  Contract related to the Assets other than this Agreement;

         (b)  Employment, consulting or compensation agreement or arrangement;

         (c)  Labor or collective bargaining agreement;

         (d)  Lease agreement with respect to any property, whether as lessor
or lessee;

         (e)  Deed, bill of sale or other document evidencing an interest in or
agreement to purchase or sell real or personal property;

                                       4 
<PAGE>
         (f)  Contract for the purchase of materials, supplies or equipment (i)
which is in excess of the requirements of the Business now booked or for normal
operating inventories, or (ii) which is not terminable upon notice of thirty
(30) days or less;

         (g)  Agreement for the purchase from a supplier of all or
substantially all of the requirements of the Business of a particular product or
service;

         (h)  Loan agreement or other contract for money borrowed or lent or to
be borrowed or lent to another; 

         (i)  Contracts containing non-competition covenants; 

         (j)  Financial or similar contracts or agreements with patients of the
Dentist, oral or written, that provide for prepayments or deferred installment
payments; or 

         (k)  Other contracts or agreements that involve either an unperformed
commitment in excess of $1,000 or that terminate or can only be terminated by
Dentist on more than 30 days after the date hereof.

    2.16 SUBSEQUENT EVENTS.  Other than as set forth on EXHIBIT 2.16, Dentist
has not, since the Balance Sheet Date:

         (a)  Incurred any material obligation or liability (absolute, accrued,
contingent or otherwise) or entered into any contract, lease, license or
commitment, except in connection with the performance of this Agreement;  

         (b)  Discharged or satisfied any material lien or encumbrance, or paid
or satisfied any material obligation or liability (absolute, accrued, contingent
or otherwise) other than (i) liabilities shown or reflected on the Balance
Sheet, (ii) liabilities incurred since the Balance Sheet Date in the ordinary
course of business;

         (c)  Made any payments to or loaned any money to any person or entity
other than in the ordinary course of business;

         (d)  Lost or terminated any employee, patient, customer or supplier
that has or may have, individually or in the aggregate, a material adverse
effect on the Business; 

         (e)  Increased or established any reserve for taxes or any other
liability on its books or otherwise provided therefor, except as may have been
required due to income or operations of Dentist since the Balance Sheet Date;

         (f)  Mortgaged, pledged or subjected to any lien, charge or other
encumbrance any of the Assets, tangible or intangible;

         (g)  Sold or contracted to sell or transferred or contracted to
transfer any of the Assets or any other assets used in the conduct of the
Business, canceled any debts or claims or waived any rights, except in the
ordinary course of business;

         (h)  Except in the ordinary course or business consistent with past
practices, granted any increase in the rates of pay of employees, consultants or
agents, or by means of any bonus or pension plan, contract or other commitment,
increased the compensation of any officer, employee, consultant or agent;

         (i)  Authorized or incurred any capital expenditures in excess of Five
Thousand and No/100 Dollars ($5,000.00);

         (j)  Except for this Agreement and any other agreement executed and
delivered pursuant to this Agreement, entered into any material transaction
other than in the ordinary course of business or permitted hereunder; 

                                       5 
<PAGE>

         (k)  Experienced damage, destruction or loss (whether or not covered
by insurance) materially and adversely affecting any of its properties, assets
or business or the Business or the Assets, or experienced any other material
adverse change in its financial condition, assets, prospects, liabilities or
business; or

         (l)  Suffered any material adverse change in the Business or to the
Assets. 

    2.17 TAXES. (a)  Dentist has filed all tax returns (including tax reports
and other statements) required to have been filed by it, and has paid all taxes
(including any interest, penalty or additions thereto) required to have been
paid by it.  All such tax returns are complete and accurate in all respects and
properly reflect the relevant taxes for the periods covered thereby.  Dentist
has not received any notice that any tax deficiency or delinquency has been  or
may be asserted against Dentist.  There are no audits relating to taxes of
Dentist pending or in process or, to the knowledge of Dentist, threatened. 
Dentist is not currently the beneficiary of any waiver of any statute of
limitations in respect of taxes nor of any extension of time within which to
file any tax return or to pay any tax assessment or deficiency.  There are no
liens or encumbrances relating to taxes on or threatened against any of the
assets of Dentist.  Dentist has withheld and paid all taxes required by law to
have been withheld and paid by it.  Neither Dentist nor any predecessor of
Dentist is or has been a party to any tax allocation or sharing agreement or a
member of an affiliated group of corporations filing a consolidated Federal
income tax return.  Dentist has delivered to Pentegra correct and complete
copies of Dentist's three most recently filed annual state, local and Federal
income tax returns, together with all examination reports and statements of
deficiencies assessed against or agreed to by Dentist during the three calendar
year period preceding the date of this Agreement.  Dentist has neither made any
payments, is obligated to make any payments, or is a party to any agreement that
under any circumstance could obligate it to make any payments that will not be
deductible under Code section 280G.

    (b)  Dentist does not intend to dispose of any of the shares of Pentegra
Common Stock to be received hereunder and is not a party to any plan,
arrangement or agreement for the disposition of such shares.  Nothing contained
herein shall prohibit Dentist from selling such shares of Pentegra Common Stock
after the designated holding period and in accordance with SECTION 12.1 hereof.

    2.18 COMMISSIONS AND FEES.  There are no claims for brokerage commissions
or finder's or similar fees in connection with the transactions contemplated by
this Agreement which may be now or hereafter asserted against Pentegra, Dentist
resulting from any action taken by Dentist or their respective agents or
employees, or any of them.

    2.19 LIABILITIES; DEBT.  Except to the extent reflected or reserved against
on the Balance Sheet, Dentist did not have, as of the Balance Sheet Date, and
has not incurred since that date and will not have incurred as of the Closing
Date, any liabilities or obligations of any nature, whether accrued, absolute,
contingent or otherwise, and whether due or to become due, other than those
incurred in the ordinary course of business or as set forth on EXHIBIT 2.16. 
Dentist does not know, or have reasonable grounds to know, of any basis for the
assertion against Dentist as of the Balance Sheet Date, of any claim or
liability of any nature in any amount not fully reflected or reserved against on
the Balance Sheet, or of any claim or liability of any nature arising since that
date other than those incurred in the ordinary course of business or
contemplated by this Agreement.  All indebtedness of Dentist (including without
limitation, indebtedness for borrowed money, guaranties and capital lease
obligations) is described on EXHIBIT 2.19 attached hereto.

    2.20 INSURANCE POLICIES.  Dentist and each licensed professional of Dentist
carries property, liability, malpractice, workers' compensation and such other
types of insurance as is customary in the industry.  Valid and enforceable
policies in such amounts are outstanding and duly in force and will remain duly
in force through the Closing Date.  All such policies are described in EXHIBIT
2.20 attached hereto and true and correct copies have been delivered to
Pentegra.  Dentist has not received notice or other communication from the
issuer of any such insurance policy cancelling or amending such policy or
threatening to do so.  Neither Dentist nor any licensed professional employee of
Dentist has any outstanding claims, settlements or premiums owed against any
insurance policy.

    2.21 EMPLOYEE BENEFIT PLANS.  Except as set forth on EXHIBIT 2.21 attached
hereto, Dentist has neither established, nor maintains, nor is obligated to make
contributions to or under or otherwise participate in, (a) any bonus or other
type of compensation or employment plan, program, agreement, policy, commitment,
contract or arrangement 

                                       6 
<PAGE>

(whether or not set forth in a written document); (b) any pension, profit-
sharing, retirement or other plan, program or arrangement; or (c) any other 
employee benefit plan, fund or program, including, but not limited to, those 
described in SECTION 3(3) of the Employee Retirement Income Security Act of 
1974, as amended ("ERISA").  All such plans listed on EXHIBIT 2.20 (individually
"Dentist Plan," and collectively "Dentist Plans") have been operated and 
administered in all material respects in accordance with all applicable laws, 
rules and regulations, including without limitation, ERISA, the Internal Revenue
Code of 1986, as amended, Title VII of the Civil Rights Act of 1964, as amended,
the Equal Pay Act of 1967, as amended, the Age Discrimination in Employment Act 
of 1967, as amended, and the related rules and regulations adopted by those 
Federal agencies responsible for the administration of such laws.  No act or 
failure to act by Dentist has resulted in a "prohibited transaction" (as defined
in ERISA) with respect to the Dentist Plans.  No "reportable event" (as defined 
in ERISA) has occurred with respect to any of the Dentist Plans.  Dentist has 
not previously made, is not currently making, and is not obligated in any way 
to make, any contributions to any multiemployer plan within the meaning of the 
Multi-Employer Pension Plan Amendments Act of 1980. With respect to each Dentist
Plan, either (i) the value of plan assets (including commitments under insurance
contracts) is at least equal to the value of plan liabilities or (ii) the value 
of plan liabilities in excess of plan assets is disclosed on the Balance Sheet, 
all as of the Closing Date.

    2.22 ADVERSE AGREEMENTS.  Dentist is not, and will not be as of the Closing
Date, a party to any agreement or instrument or subject to any charter or other
corporate restriction or any judgment, order, writ, injunction, decree, rule or
regulation that materially and adversely affects the condition (financial or
otherwise), operations, assets, liabilities, business or prospects of Dentist,
the Business or the Assets.

    2.23 COMPLIANCE WITH LAWS IN GENERAL.  Dentist and Dentist's licensed
professional employees, and the conduct of the Business and use of the Assets,
have complied with all applicable laws, rules, regulations and licensing
requirements, including, without limitation, the Federal Environmental
Protection Act, the Occupational Safety and Health Act, the Americans with
Disabilities Act and any environmental laws and medical waste laws, and there
exist no violations by Dentist or any licensed professional employee of Dentist
of any Federal, state or local law or regulation.  Dentist has not received any
notice of a violation of any Federal, state and local laws, regulations and
ordinances relating to the operations of the Business and Assets and no notice
of any pending inspection or violation of any such law, regulation or ordinance
has been received by Dentist. 

    2.24 THIRD PARTY PAYORS.   Dentist and each licensed professional employee
or independent contractor of Dentist has timely filed all claims or other
reports required to be filed with respect to the purchase of services by third-
party payors, and all such claims or reports are complete and accurate, and has
no liability to any payor with respect thereto.  There are no pending appeals,
overpayment determinations, adjustments, challenges, audit, litigation or
notices of intent to open Medicare or Medicaid claim determinations or other
reports required to be filed by Dentist and each licensed professional employee
of Dentist.  Neither Dentist nor any licensed professional employee of Dentist
has been convicted of, or pled guilty or nolo contendere to, patient abuse or
negligence, or any other Medicare or Medicaid program related offense and none
has committed any offense which may serve as the basis for suspension or
exclusion from the Medicare and Medicaid programs or any other third party payor
program.  With respect to payors, Dentist and Dentist's licensed professional
employees has not (a) knowingly and willfully making or causing to be made a
false statement or representation of a material fact in any application for any
benefit or payment; (b) knowingly and willfully making or causing to be made any
false statement or representation of a material fact for use in determining
rights to any benefit or payment; (c) failed to disclose knowledge of the
occurrence of any event affecting the initial or continued right to any benefit
or payment on its own behalf or on behalf of another, with the intent to
fraudulently secure such benefit or payment; and (d) violated any applicable
state anti-remuneration or self-referral statutes, rules or regulations. 

    2.25 NO UNTRUE REPRESENTATIONS.  No representation or warranty by Dentist
in this Agreement, and no Exhibit or certificate issued or executed by, or
information furnished by Dentist or to be furnished by Dentist to Pentegra
pursuant hereto, or in connection with the transactions contemplated hereby,
contains or will contain any untrue statement of a material fact, or omits or
will omit to state a material fact necessary to make the statements or facts
contained therein not misleading.

                                       7 
<PAGE>

    2.26 BANKING RELATIONS.  Set forth in EXHIBIT 2.26 is a complete and
accurate list of all arrangements that Dentist has with any bank or other
financial institution, indicating with respect to each relationship the type of
arrangement maintained (such as checking account, borrowing arrangements, safe
deposit box, etc.) and the person or persons authorized in respect thereof.

    2.27 OWNERSHIP INTERESTS OF INTERESTED PERSONS; COMPETITORS.  No officer or
employee or family member  of Dentist, or their respective spouses, children or
affiliates, owns directly or indirectly, on an individual or joint basis, any
interest in, has a compensation or other financial arrangement with, or serves
as an officer or director of, any customer or supplier or competitor of Dentist
or any organization that has a material contract or arrangement with Dentist. 

    2.28 PAYORS.  EXHIBIT 2.28 sets forth a true, complete and correct list of
the names and addresses of each payor of Dentist's services which accounted for
more than 10% of revenues of Dentist in the preceding fiscal year.  Dentist has
good relations with all such payors and other material payors of Dentist and
none of such payors has notified Dentist that it intends to discontinue its
relationship with Dentist or to deny any claims submitted to such payor for
payment. 

SECTION 3.    REPRESENTATIONS AND WARRANTIES OF PENTEGRA.

    Pentegra hereby represents and warrants to Dentist as follows:

    3.1  CORPORATE EXISTENCE: GOOD STANDING.  Pentegra is a corporation duly
organized and existing and in good standing under the laws of the State of
Delaware. 

    3.2  POWER AND AUTHORITY; CONSENTS.  Pentegra has corporate power to
execute, deliver and perform this Agreement and all agreements and other
documents executed and delivered by it pursuant to this Agreement or to be
executed and delivered on the Closing Date, and has taken all actions required
by law, its Certificate of Incorporation, its Bylaws or otherwise, to authorize
the execution, delivery and performance of this Agreement and such related
documents.  This Agreement and all agreements and documents executed and
delivered in connection herewith have been, or will be as of the Closing Date,
duly executed and delivered by Pentegra and constitute or will constitute the
legal, valid and binding obligations of Pentegra, enforceable against Pentegra
in accordance with their respective terms, except as may be limited by
applicable bankruptcy, insolvency or similar laws affecting creditors' rights
generally or the availability of equitable remedies.  The execution and delivery
of this Agreement, and the agreements executed and delivered pursuant to this
Agreement or to be executed and delivered on the Closing Date, do not, and, the
consummation of the actions contemplated hereby will not, violate any provision
of the Certificate of Incorporation or Bylaws of Pentegra or any provisions of,
or result in the acceleration of, any obligation under any mortgage, lien,
lease, agreement, rent, instrument, order, arbitration award, judgment or decree
to which Pentegra is a party or by which Pentegra is bound, or violate any
material restrictions of any kind to which Pentegra is subject, or result in any
lien or encumbrance on any of Pentegra's assets. Other than as have been
obtained or as would not have a material adverse effect, there are no consents
of any person or entity required for the transaction contemplated hereby on
behalf of Pentegra.

    3.3  PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS.  All building or
other permits, certificates of occupancy, concessions, grants, franchises,
licenses, certificates of need and other governmental authorizations and
approvals required for the conduct of the business of Penegra or waivers
thereof, have been duly obtained and are in full force and effect, except as
would not have a material adverse effect upon Pentegra.  Other than as would not
have a material adverse effect, there are no proceedings pending or, to the
knowledge of Pentegra, threatened, which may result in the revocation,
cancellation or suspension, or any adverse modification, of any such licenses or
permits. 

    3.4  LEGAL PROCEEDINGS.  Other than as would not have a material adverse
effect, neither Pentegra nor its business or assets is subject to any pending,
nor does Pentegra have knowledge of any threatened, litigation, governmental
investigation, condemnation or other proceeding against or relating to or
affecting Pentegra, its business, assets or the transactions contemplated by
this Agreement, and, to the knowledge of Pentegra, no basis for any such 

                                       8 
<PAGE>

action exists, nor is there any legal impediment of which Pentegra has knowledge
to the continued operation of its business or the use of its Assets in the 
ordinary course. 

    3.5  TAXES.  Pentegra has filed all tax returns (including tax reports and
other statements) required to have been filed by it, and has paid all taxes
(including any interest, penalty or additions thereto) required to have been
paid by it, other than as would not have a material adverse effect.  Pentegra
has not received any notice that any tax deficiency or delinquency has been  or
may be asserted against Pentegra.  There are no audits relating to taxes of
Pentegra pending or in process or, to the knowledge of  Pentegra, threatened. 
Pentegra is not currently the beneficiary of any waiver of any statute of
limitations in respect of taxes nor of any extension of time within which to
file any tax return or to pay any tax assessment or deficiency. 

    3.6  COMMISSIONS AND FEES.  Pentegra has not incurred any obligation for
any finder's, broker's or similar fees in connection with the transactions
contemplated hereby.

    3.7  CAPITAL STOCK.  The issuance and delivery by Pentegra of shares of
Pentegra Common Stock in connection with the acquisition contemplated hereby
will be as of the Closing Date duly and validly authorized by all necessary
corporate action on the part of Pentegra.  The Pentegra Common Stock to be
issued in connection with the acquisition contemplated hereby, when issued in
accordance with the terms of this Agreement, will be validly issued, fully paid
and nonassessable.  

    3.8  NO UNTRUE REPRESENTATIONS.  No representation or warranty by Pentegra
in this Agreement, and no Exhibit or certificate issued by officers or directors
of Pentegra and furnished or to be furnished to Dentist pursuant hereto, or in
connection with the transactions contemplated hereby, contains or will contain
any untrue statement of a material fact, or omits or will omit to state a
material fact necessary to make the statements or facts contained therein not
misleading.


SECTION 4.  COVENANTS OF DENTIST.

    Dentist agrees that between the date hereof and the Closing Date:

    4.1  CONSUMMATION OF AGREEMENT; EXHIBITS.  Dentist shall use his best
efforts to cause the consummation of the transactions contemplated hereby in
accordance with their terms and conditions.  Dentist agrees to complete the
Exhibits hereto to be provided by him in form and substance satisfactory to
Pentegra.

    4.2  BUSINESS OPERATIONS.  Dentist shall operate the Business and use the
Assets in the ordinary course.  Dentist shall not enter into any lease,
contract, indebtedness, commitment, purchase or sale or acquire or dispose of
any capital asset relating to the Business or the Assets except in the ordinary
course of business.  Dentist shall use their best efforts to preserve the
Business and Assets intact and shall not take any action that would have an
adverse effect on the Business or Assets.  Dentist shall use their best efforts
to preserve intact the relationships with payors, customers, suppliers, patients
and others having significant business relations with Dentist.  Dentist shall
collect its receivables and pay its trade payables in the ordinary course of
business.  Dentist shall not introduce any new method of management, operations
or accounting. 

    4.3  ACCESS AND NOTICE.  Dentist shall permit Pentegra and its authorized
representatives access to, and make available for inspection, all of the assets
and business of Dentist, the Business and the Assets, including employees,
customers and suppliers and permit Pentegra and its authorized representatives
to inspect and make copies of all documents, records and information with
respect to the business or assets of Dentist, the Business or the Assets as
Pentegra or its representatives may request.  Dentist shall promptly notify
Pentegra in writing of (a) any notice or communication relating to a default or
event that, with notice or lapse of time or both, could become a default, under

                                       9 
<PAGE>

any contract, commitment or obligation to which Dentist is a party or relating
to the Business or the Assets, and (b) any adverse change in Dentist's or the
Business' financial condition or the Assets.

    4.4  APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS.  Dentist shall
use his best efforts to secure all necessary approvals and consents of third
parties to the consummation of the transactions contemplated hereby, including
consents described on EXHIBIT 2.4.  Dentist shall use his best efforts to obtain
all licenses, permits, approvals or other authorizations required under any law,
rule, regulation, or otherwise to provide the services of the Practice
contemplated by the Service Agreement and to conduct the intended business of
the Practice and operate the Business and use the Assets.

    4.5  ACQUISITION PROPOSALS.  From the execution of this Agreement until the
earlier of Closing or the termination of this Agreement in accordance with the
provisions hereof, Dentist shall not, and shall use its best efforts to cause
Dentist's employees, agents and representatives not to, initiate, solicit or
encourage, directly or indirectly, any inquiries or the making or implementation
of any proposal or offer, including without limitation, any proposal or offer to
the Dentist, with respect to a merger, acquisition, consolidation or similar
transaction involving, or the purchase of all or any significant portion of the
assets or any equity securities of Dentist or engage in any negotiations
concerning, or provide any confidential information or data to, or have any
discussions with, any person relating to such proposal or offer, and Dentist
will immediately cease any such activities, discussions or negotiations
heretofore conducted with respect to any of the foregoing.  Dentist shall
immediately notify Pentegra if any such inquiries or proposals are received.

    4.6  FUNDING OF ACCRUED EMPLOYEE BENEFITS.  Dentist hereby covenants and
agrees that it will take whatever steps are necessary to pay or fund completely
for any accrued benefits, where applicable, or vested accrued benefits for which
Dentist or any entity might have any liability whatsoever arising from any
insurance, pension plan, employment tax or similar liability of Dentist to any
employee or other person or entity (including, without limitation, any Dentist
Plan and any liability under employment contracts with Dentist) allocable to
services performed prior to the Closing Date.  Dentist acknowledges that the
purpose and intent of this covenant is to assure that Pentegra shall have no
liability whatsoever at any time after the Closing Date with respect to any of
Dentist's employees or similar persons or entities, including, without
limitation, any Dentist Plan for the period prior to the Closing Date.

    4.7  EMPLOYEE MATTERS.  Dentist shall not, without the prior written
approval of Pentegra, except as required by law, increase the cash compensation
of the Dentist (other than in the ordinary course of business) or other employee
or an independent contractor of Dentist, adopt, amend or terminate any
compensation plan, employment agreement, independent contractor agreement,
employee policies and procedures or employee benefit plan, take any action that
could deplete the assets of any employee benefit, or fail to pay any premium or
contribution due or file any report with respect to any employee benefit plan,
or take any other actions with respect to its employees or employee matters
which might have an adverse effect upon Dentist, its business, assets or
prospects.

    4.8  [INTENTIONALLY OMITTED].  

    4.9  REQUIREMENTS TO EFFECT ACQUISITION.  Dentist shall use his best
efforts to take, or cause to be taken, all actions necessary to effect the
acquisition contemplated hereby under applicable law. 

    4.10 ACCOUNTING AND TAX MATTERS.  Dentist will not change in any material
respect the tax or financial accounting methods or practices followed by Dentist
(including any material change in any assumption underlying, or any method of
calculating, any bad debt, contingency or other reserve), except as may be
required by law or  generally accepted accounting principles.  Dentist will
duly, accurately and timely (without regard to any extensions of time) file all
returns, information statements and other documents relating to taxes of Dentist
required to be filed by it, and pay all taxes required to be paid by it, on or
before the Closing Date.

    4.11 WAIVER OF BULK TRANSFER COMPLIANCE.  Pentegra and Dentist hereby waive
any compliance with the applicable state Bulk Transfers Act, if any.  Dentist
covenants and agrees that all of the creditors with respect to the Business and
the Assets will be paid in full by Dentist prior to the Closing Date, except to
extent that any liability to such creditors is assumed by Pentegra pursuant to
this Agreement.  If required by Pentegra, Dentist shall furnish Pentegra 

                                       10 
<PAGE>

with proof of payment of all creditors with respect to the Business and the 
Assets. Notwithstanding the foregoing, Dentist may dispute the validity or 
amount of any such creditor's claim without being deemed to be in violation 
of this SECTION 4.11, provided that such dispute is in good faith and does 
not unreasonably delay the resolution of the claim and provided, further that 
Dentist agrees to indemnify and bond Pentegra for such amounts as is 
satisfactory to Pentegra. 

    4.12 LEASE.  If Dentist leases any of its premises from the Dentist or
other affiliate of Dentist, Pentegra shall have entered into a building lease
(the "Building Lease") with the owner of such premises on terms and conditions
satisfactory to Pentegra, the terms and conditions of which shall include,
without limitation, (i) a five year initial term plus three five-year renewal
options, (ii) a lease rate equal to the fair market value lease rate, as agreed
to by Pentegra, and (iii) such other provisions to be acceptable to Pentegra.

    4.13 HIRING OF EMPLOYEES.  Dentist shall cooperate with all requests made
by Pentegra for the purpose of allowing Pentegra to hire those non-dental
employees of Dentist designated by Pentegra, such employment to be effective as
of the Closing Date.  Notwithstanding the above, Dentist shall remain liable
under any Dentist Plans for any claims incurred by any employees or their
spouses or dependents, and for all compensation, bonuses, benefits and other
such items and other liabilities related to Dentist's employees incurred by
Dentist prior to the Closing Date.
  
    4.14 EMPLOYEE BENEFIT PLANS.  Dentist agrees and acknowledges that all
employees of Dentist hired by Pentegra pursuant to SECTION 4.13 above, shall be
treated as "leased employees" (as defined in Code Section 414(n)) of Dentist and
shall be treated as Clinic employees for purposes of eligibility and
participation in Dentist Plans. 

    4.15 INSURANCE.  Dentist shall cause Pentegra and its affiliates to be
named as an additional insured on its liability insurance programs, effective as
of the Closing Date. 

    4.16 FORMATION OF THE PRACTICE.  Dentist shall have formed a limited
liability company, partnership or other legal entity (the "Practice") approved
by Pentegra for the purpose of practicing dentistry and entering into the
Service Agreement.  The Practice shall be duly organized, in existing and in
good standing under the laws of the State in which the Dentist and the Practice
are to practice dentistry.  The Practice shall have all necessary power to own
all of its assets and to carry on its business as such business is now being
conducted.  The Dentist shall be the sole member/shareholder/partner of the
Practice and own all such interests free of all security interests, claims,
encumbrances and liens.  Each interest in the Practice shall be legally and
validly issued and fully paid and nonassessable.  There shall be no outstanding
(a) bonds, debentures, notes or other obligations the holders of which have the
right to vote with the members/partners/shareholders of the Practice on any
matter, (b) securities of the Practice convertible into equity interests in the
Practice, or (c) commitments, options, rights or warrants to issue any such
equity interests in the Practice, to issue securities of the Practice
convertible into such equity interests, or to redeem any securities of the
Practice. No interests of the Practice shall have been issued or disposed of in
violation of the preemptive rights, rights of first refusal or similar rights of
any of the Practice's members/partners/shareholders. The Practice shall quality
to do business as a foreign entity in any other state or jurisdiction by reason
of its business, properties or activities in or relating to such other state or
jurisdiction.  

    4.17 CORPORATE RECORDS.  True and correct copies of the Articles of
Organization/Partnership Agreement\Articles of Incorporation, Bylaws/Regulations
and minutes of the Practice and all amendments thereto of the Practice shall 
have been delivered to Pentegra and shall be in form and substance satisfactory 
to Pentegra.  The minute books of the Practice shall contain all accurate 
minutes of the meetings of and consents to actions taken without meetings of the
members\managers/partners/board of directors of the Practice since its
formation.  The books of account of the Practice shall have been kept accurately
in the ordinary course of business and the revenues, expenses, assets and
liabilities of the Practice shall have been properly recorded in such books.

    4.18 POWER AND AUTHORITY FOR TRANSACTIONS.  The Practice shall have the
power to execute, deliver and perform its obligations under all agreements and
other documents to be executed and delivered by it pursuant to this Agreement,
including without limitation, the Service Agreement and each Employment
Agreement or to be executed and delivered on the Closing Date, and has taken all
action required by law, its Organization/Partnership Agreement/Articles of
Incorporation, its Bylaws/Regulations or otherwise, to authorize the execution,
delivery and performance of such documents.  The Service Agreement, the
Employment Agreement and the other agreements 

                                       11 
<PAGE>

contemplated hereby shall have been duly executed and delivered by the Practice 
and constitute or will constitute the legal, valid and binding obligations of 
the Practice enforceable against the Practice in accordance with their 
respective terms, except as may be limited by applicable bankruptcy, insolvency 
or similar laws affecting creditors' rights generally or the availability of 
equitable remedies.  The execution and delivery of the Service Agreement, the 
Employment Agreements and the other agreements contemplated hereby will not 
violate any provision of the organizational documents of the Practice or any 
provisions of, or result in the acceleration of, any obligation under any 
mortgage, lien, lease, agreement, rent, instrument, order, arbitration award, 
judgment or decree to which the Practice is a party or by which the Practice is 
bound, or violate any material restrictions of any kind to which the Practice is
subject, or result in any lienor encumbrance on any of the Practice's assets. 

    4.19 NO BUSINESS.  Other than its Articles of Organization/Partnership
Agreement/Articles of Incorporation, Bylaws/Regulations and as of the Closing
Date, the Service Agreement and the Employment Agreements, the Practice shall
not be a party to or subject to any agreement, indenture or other instrument. 

    4.20 COMPLIANCE WITH LAWS.  The Practice shall have complied with all
applicable laws, regulations and licensing requirements and has filed with the
proper authorities all necessary statements and reports.

SECTION 5.    COVENANTS OF PENTEGRA. 

    Pentegra agrees that between the date hereof and the Closing: 

    5.1  CONSUMMATION OF AGREEMENT; EXHIBITS.  Pentegra shall use its best
efforts to cause the consummation of the transactions contemplated hereby in
accordance with their terms and provisions.  Pentegra agrees to complete the
Exhibits hereto to be provided by it. 

    5.2  APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS.  Pentegra shall
use its best efforts to secure all necessary approvals and consents of third
parties to the consummation of the transactions contemplated hereby. 

SECTION 6.    COVENANTS OF PENTEGRA AND DENTIST. 

    Pentegra and Dentist agree as follows: 

    6.1  FILINGS; OTHER ACTIONS.  Pentegra and Dentist shall cooperate to
promptly prepare and file with the Securities Exchange Commission ("SEC")  the
Registration Statement on Form S-1 (or other appropriate Form) to be filed by
Pentegra in connection with its Initial Public Offering (including the
prospectus constituting a part thereof, the "Registration Statement").  Pentegra
shall obtain all necessary state securities laws or "Blue Sky" permits and
approvals required to carry out the transactions contemplated by this Agreement
and the Dentist shall furnish all information concerning Dentist as may be
reasonable requested in connection with any such action.

    Dentist represents and warrants that none of the information or documents
supplied or to be supplied by it specifically for inclusion in the Registration
Statement, by exhibit or otherwise, will, at the time the Registration Statement
and each amendment or supplement thereto, if any, becomes effective under the
Securities Act of 1933, contain any untrue statement of a material fact or omit
to state any material fact required to be stated therein or necessary to make
the statements therein, in light of the circumstances under which they were
made, not misleading.  Dentist shall be entitled to review the Registration
Statement and each amendment thereto, if any, prior to the time each becomes
effective under the Securities Act of 1933.

    Dentist shall furnish Pentegra will all information concerning itself and
such other matters as may be reasonable requested by Pentegra in connection with
the preparation of the Registration Statement and each amendment or supplement
thereto, or any other statement, filing, notice or application made by or on
behalf of each such party or any of its subsidiaries to any governmental entity
in connection with the transactions contemplated by the Other Agreements or this
Agreement.

                                       12 
<PAGE>

SECTION 7.  PENTEGRA CONDITIONS PRECEDENT.

    The obligations of Pentegra hereunder are subject to the fulfillment at or
prior to the Closing of each of the following conditions:

    7.1  REPRESENTATIONS AND WARRANTIES.  The representations and warranties of
Dentist contained herein shall have been true and correct in all respects when
initially made and shall be true and correct in all respects as of the Closing
Date. 

    7.2  COVENANTS AND CONDITIONS.  Dentist shall have performed and complied
with all covenants and conditions required by this Agreement to be performed and
complied with by Dentist prior to the Closing Date.

    7.3  PROCEEDINGS.  No action, proceeding or order by any court or
governmental body shall have been threatened orally or in writing, asserted,
instituted or entered to restrain or prohibit the carrying out of the
transactions contemplated hereby.

    7.4  NO MATERIAL ADVERSE CHANGE.  No material adverse change in the
condition (financial or otherwise), operations, assets, liabilities, business or
prospects of Dentist shall have occurred since the Balance Sheet Date.

    7.5  DUE DILIGENCE REVIEW.  By the Closing Date, Pentegra shall have
completed a due diligence review of the business, operations and financial
statements of Dentist, the Business and the Assets, the results of which shall
be satisfactory to Pentegra in its sole discretion. 

    7.6  APPROVAL BY THE BOARD OF DIRECTORS.  This Agreement and the
transactions contemplated hereby shall have been approved by the Board of
Directors of Pentegra or a committee thereof. 

    7.7  SERVICE AGREEMENT; GUARANTY AGREEMENT.  The Practice and Pentegra
shall have executed and delivered a Service Agreement (the "Service Agreement"),
in substantially the form attached hereto as EXHIBIT 7.7, pursuant to which
Pentegra will provide management services to the Practice. Dentist shall have
executed and delivered a Guaranty Agreement in substantially the form attached
as EXHIBIT 4.10 of the Service Agreement pursuant to which Dentist shall, among
other things, guaranty the obligations of the Practice under the Service
Agreement. 

    7.8  EMPLOYMENT ARRANGEMENTS.  Dentist shall have terminated his or her
employment agreement and executed an employment agreement ("Employment
Agreement") with the Practice in form and substance attached hereto as EXHIBIT
7.8 and otherwise satisfactory to Dentist and Pentegra. 

    7.9  CONSENTS AND APPROVALS.  Dentist shall have obtained all necessary
government and other third-party approvals and consents.

    7.10 CLOSING DELIVERIES.  Pentegra shall have received all documents, duly
executed in form satisfactory to Pentegra and its counsel, referred to in
SECTION 9.1.

    7.11 DEBT AND RECEIVABLES.  There shall be no indebtedness, receivables or
payables between Dentist and its affiliates and Dentist shall not have any
liabilities, including indebtedness, guaranties and capital leases, that are not
set forth on EXHIBIT 2.19. 

    7.12 INSURANCE.  Dentist shall have named Pentegra as an additional insured
on irs liability insurance program in accordance with SECTION 4.15.

    7.13 NO CHANGE IN WORKING CAPITAL.  There shall have been no material
change in the working capital of Dentist since the Balance Sheet Date. 

    7.14 SECURITIES APPROVAL.  The Registration Statement shall have become
effective under the Securities Act and no stop order suspending the
effectiveness of the Registration Statement shall have been issued and no

                                       13 
<PAGE>

proceedings for that purpose shall have been initiated or threatened by the SEC.
At or prior to the date that the Registration Statement is declared effective by
the SEC, Pentegra shall have received all state securities and "Blue Sky"
permits necessary to consummate the transactions contemplated hereby.  The
Pentegra Common Stock shall have been approved for listing on Nasdaq or other
exchange selected by Pentegra, subject only to official notification of
issuance.  

SECTION 8.    DENTIST'S CONDITIONS PRECEDENT.

    The obligations of Dentist hereunder are subject to fulfillment at or prior
to the Closing of each of the following conditions:

    8.1  REPRESENTATIONS AND WARRANTIES.  The representations and warranties of
Pentegra contained herein shall have been true and correct in all respects when
initially made and shall be true and correct in all respects as of the Closing
Date.

    8.2  COVENANTS AND CONDITIONS.  Pentegra shall have performed and complied
with all covenants and conditions required by this Agreement to be performed and
complied with by Pentegra prior to the Closing Date.

    8.3  PROCEEDINGS.  No action, proceeding or order by any court or
governmental body shall have been threatened orally or in writing, asserted,
instituted or entered to restrain or prohibit the carrying out of the
transactions contemplated hereby.

    8.4  CLOSING DELIVERIES.  Dentist shall have received all documents, duly
executed in form satisfactory to Dentist and its counsel, referred to in SECTION
9.2.

    8.5  SECURITIES APPROVAL.  The Registration Statement shall have become
effective under the Securities Act and no stop order suspending the
effectiveness of the Registration Statement shall have been issued and no
proceedings for that purpose shall have been initiated or threatened by the SEC.
At or prior to the date that the Registration Statement is declared effective by
the SEC, Pentegra shall have received all state securities and "Blue Sky"
permits necessary to consummate the transactions contemplated hereby.  The
Pentegra Common Stock shall have been approved for listing on Nasdaq or other
exchange selected by Pentegra, subject only to official notification of
issuance.

SECTION 9.  CLOSING DELIVERIES.

    9.1  DELIVERIES OF DENTIST. Within five business days after requested by
Pentegra, Dentist shall deliver to Pentegra the following, all of which shall be
in a form satisfactory to counsel to Pentegra and shall be held by Jackson &
Walker, L.L.P. (counsel for Pentegra) in escrow pending Closing, pursuant to an
escrow agreement or letter agreement in form and substance mutually acceptable
to the parties hereto:

         (a)  an executed original Service Agreement and executed originals of
all documents required by that agreement, including but not limited to the
Guaranty Agreemen and  security agreement referred to therein;

         (b)  executed Employment Agreements; 
    
         (c)  a bill of sale conveying the Assets to Pentegra; 

         (d)  an assignment of each contract, agreement and lease being
assigned to and assumed by Pentegra;  

         (e)  certificates of Dentist dated as of the Closing Date, (i) as to
the truth and correctness of the representations and warranties of Dentist
contained herein; (ii) as to the performance of and compliance by Dentist with

                                       14 
<PAGE>

all covenants contained herein; and (iii) certifying that all conditions
precedent of Dentist to the Closing have been satisfied;

         (f)  an opinion of counsel to Dentist opining as to the execution and
delivery of this Agreement and the other documents and agreements to be executed
pursuant hereto, the good standing and authority of Dentist, the enforceability
of this Agreement and the other agreements and documents to be executed in
connection herewith, and other matters reasonably requested by Pentegra; 

         (g)  non-foreign affidavits executed by Dentist; 

         (h)  all authorizations, consents, approvals, permits and licenses
referred to in SECTIONS 2.3 and 2.4; 

         (i)  an executed Registration Rights Agreement between Pentegra and
Dentist, in substantially the form attached hereto as EXHIBIT 9.1(l) (the
"Registration Rights Agreement"); and

         (j)  such other instruments and documents as reasonably requested by
Pentegra to carry out and effect the purpose and intent of this Agreement.

    9.2  DELIVERIES OF PENTEGRA. On or before the Closing Date, Pentegra shall
deliver to Dentist the following, all of which shall be in a form satisfactory
to counsel to Dentist and shall be held by Jackson & Walker, L.L.P. (counsel for
Pentegra) in escrow pending Closing, pursuant to an escrow agreement or letter
agreement in form and substance mutually acceptable to the parties hereto:

         (a)  the Acquisition Consideration;

         (b)  an executed Service Agreement;

         (c)  an assumption of each contract, agreement and lease being
assigned to and assumed by Pentegra; 

         (d)  a copy of the resolutions of the Board of Directors of Pentegra
(or a committee thereof) authorizing the execution, delivery and performance of
this Agreement and all related documents and agreements each certified by the
Secretary as being true and correct copies of the original thereof;

         (e)  certificates of the President of Pentegra, dated as of the
Closing Date, (i) as to the truth and correctness of the representations and
warranties of Pentegra contained herein; (ii) as to the performance of and
compliance by Pentegra with all covenants contained herein; and (iii) certifying
that all conditions precedent of Pentegra to the Closing have been satisfied; 

         (f)  a certificate of the Secretary of Pentegra certifying as to the
incumbency of the directors and officers of Pentegra and as to the signatures of
such directors and officers who have executed documents delivered at the Closing
on behalf of Pentegra; 

         (g)  certificates, dated within 30 days of the Closing Date, of the
Secretary of the State of Delaware establishing that Pentegra is in existence
and are in good standing to transact business in the State of  Delaware and the
State of incorporation of Dentist; 

         (h)  an opinion of counsel to Pentegra opining as to the execution and
delivery of this Agreement and the other documents and agreements to be executed
pursuant hereto, the good standing and authority of Pentegra, the enforceability
of this Agreement and the other agreements and documents to be executed in
connection herewith, and other matters reasonably requested by Dentist; 

                                       15 
<PAGE>

         (i)  the executed Registration Rights Agreement; and

         (j)  such other instruments and documents as reasonably requested by
Dentist to carry out and effect the purpose and intent of this Agreement. 

SECTION 10.  NATURE AND SURVIVAL OF REPRESENTATIONS AND WARRANTIES;
             INDEMNIFICATION.

    10.1 NATURE AND SURVIVAL.  All statements contained in this Agreement or in
any Exhibit attached hereto, any agreement executed pursuant hereto, and any
certificate executed and delivered by any party pursuant to the terms of this
Agreement, shall constitute representations and warranties of Dentist or of
Pentegra, as the case may be.  All such representations and warranties, and all
representations and warranties expressly labeled as such in this Agreement shall
survive the date of this Agreement and the Closing Date for a period of five (5)
years following the Closing Date, except that (i) the representations and
warranties with respect to environmental and medical waste laws and health care
laws and matters shall survive for a period of fifteen (15) years and tax
representations shall survive until one year after the expiration of the
applicable statute of limitations.  Each party covenants with the other parties
not to make any claim with respect to such representations and warranties,
against any party after the date on which such survival period shall terminate. 
No party shall be entitled to claim indemnity from any other party pursuant to
SECTION 10.2 or 10.3 hereof, unless such party has timely given the notice
required in SECTION 10.2, 10.3 or 10.4 hereof, as the case may be.  Each party
hereby releases, acquits and discharges the other party from any and all claims
and demands, actions and causes of action, damages, costs, expenses and rights
of setoff with respect to which the notices required by SECTION 10.2, 10.3 or
10.4, as applicable, are not timely provided.

    10.2 INDEMNIFICATION BY PENTEGRA.  PENTEGRA (FOR PURPOSES OF THIS SECTION
10.2 AND, TO THE EXTENT APPLICABLE, SECTION 10.4, "INDEMNITOR"), SHALL INDEMNIFY
AND HOLD DENTIST AND ITS AGENTS AND EMPLOYEES (EACH OF THE FOREGOING, INCLUDING
DENTIST FOR PURPOSES OF THIS SECTION 10.2 AND, TO THE EXTENT APPLICABLE, SECTION
10.4, AN "INDEMNIFIED PERSON"), HARMLESS FROM AND AGAINST ANY AND ALL
LIABILITIES, LOSSES, DAMAGES, ACTIONS, SUITS, COSTS, DEFICIENCIES AND EXPENSES
(INCLUDING, BUT NOT LIMITED TO, REASONABLE FEES AND DISBURSEMENTS OF COUNSEL
THROUGH APPEAL) ARISING FROM OR BY REASON OF OR RESULTING FROM:

    (A)  ANY BREACH BY INDEMNITOR OF ANY REPRESENTATION, WARRANTY, AGREEMENT
OR COVENANT CONTAINED IN THIS AGREEMENT (INCLUDING THE EXHIBITS HERETO) AND EACH
DOCUMENT, CERTIFICATE OR OTHER INSTRUMENT FURNISHED OR TO BE FURNISHED BY
INDEMNITOR HEREUNDER, AND 

    (B)  AFTER THE CLOSING DATE, INDEMNITOR'S OWNERSHIP OF THE ASSETS, AND

    (C)  ANY LIABILITY UNDER THE SECURITIES ACT, THE EXCHANGE ACT OR ANY OTHER
FEDERAL OR STATE "BLUE SKY" OR SECURITIES LAWS OR REGULATION, AT COMMON LAW OR
OTHERWISE, ARISING OUT OF OR BASED UPON ANY UNTRUE STATEMENT OR ALLEGED UNTRUE
STATEMENT OF A MATERIAL FACT RELATING TO PENTEGRA CONTAINED IN ANY PRELIMINARY
PROSPECTUS, THE REGISTRATION STATEMENT OR ANY PROSPECTUS FORMING A PART THEREOF,
OR ANY AMENDMENT THEREOF OR SUPPLEMENT THERETO, ARISING OUT OF OR BASED UPON ANY
OMISSION OR ALLEGED OMISSION TO STATE THEREIN A MATERIAL FACT RELATING TO
PENTEGRA REQUIRED TO BE STATED THEREIN OR NECESSARY TO MAKE THE STATEMENTS
THEREIN NOT MISLEADING.
 
IN CONNECTION WITH INDEMNITOR'S OBLIGATION TO INDEMNIFY FOR EXPENSES, INDEMNITOR
SHALL REIMBURSE EACH INDEMNIFIED PERSON FOR ALL SUCH EXPENSES AS THEY ARE
INCURRED BY SUCH INDEMNIFIED PERSON, PROVIDED THAT SUCH INDEMNIFIED PERSON
AGREES IN WRITING TO REFUND ALL SUCH REIMBURSED EXPENSES IF AND TO THE EXTENT
THAT IT IS FINALLY 

                                       16 
<PAGE>

JUDICIALLY DETERMINED THAT SUCH INDEMNIFIED PERSON IS NOT ENTITLED TO 
INDEMNIFICATION HEREUNDER.

    10.3 INDEMNIFICATION BY DENTIST.  DENTIST (FOR PURPOSES OF THIS SECTION
10.3 AND, TO THE EXTENT APPLICABLE, SECTION 10.4, "INDEMNITOR"), SHALL INDEMNIFY
AND HOLD PENTEGRA AND ITS AFFILIATES, OFFICERS, DIRECTORS, SHAREHOLDERS, AGENTS
AND EMPLOYEES (EACH OF THE FOREGOING, INCLUDING PENTEGRA, FOR PURPOSES OF THIS
SECTION 10.3 AND, TO THE EXTENT APPLICABLE, SECTION 10.4, AN "INDEMNIFIED
PERSON") HARMLESS FROM AND AGAINST ANY AND ALL LIABILITIES, LOSSES, CLAIMS,
DAMAGES, ACTIONS, SUITS, COSTS, DEFICIENCIES AND EXPENSES (INCLUDING, BUT NOT
LIMITED TO, REASONABLE FEES AND DISBURSEMENTS OF COUNSEL THROUGH APPEAL) ARISING
FROM OR BY REASON OF OR RESULTING FROM OR WITH RESPECT TO:

    (A)  ANY BREACH BY INDEMNITOR OF ANY REPRESENTATION, WARRANTY, AGREEMENT
OR COVENANT CONTAINED IN THIS AGREEMENT (INCLUDING THE EXHIBITS HERETO) AND EACH
DOCUMENT, CERTIFICATE, OR OTHER INSTRUMENT FURNISHED OR TO BE FURNISHED BY
INDEMNITOR HEREUNDER, 

    (B)  PRIOR TO AND AFTER THE CLOSING DATE, THE INDEMNITOR'S MANAGEMENT AND
CONDUCT OF THE BUSINESS AND OWNERSHIP OR OPERATION OF THE ASSETS, AND 

    (C)  ANY ALLEGED ACT OR NEGLIGENCE OF INDEMNITOR OR ITS EMPLOYEES, AGENTS
AND INDEPENDENT CONTRACTORS IN OR ABOUT DENTIST'S BUSINESS WHETHER ON OR AFTER
THE CLOSING DATE,

    (D)  ANY VIOLATION BY DENTIST OR ITS CONSULTANTS, OFFICERS, DIRECTORS,
EMPLOYEES, AGENTS AND AFFILIATES OF STATE OR FEDERAL LAWS GOVERNING HEALTHCARE
FRAUD AND ABUSE, OR ANY OVERPAYMENT OR OBLIGATION ARISING OUT OF OR RESULTING
FROM ACTIONS OF THE DENTIST RELATING TO CLAIMS SUBMITTED TO ANY THIRD PARTY
PAYOR, WHETHER ON OR AFTER THE CLOSING DATE, 

    (E)  TAXES OF DENTIST OR ANY OTHER PERSON OR ENTITY RELATED TO OR
AFFILIATED WITH DENTIST ARISING FROM OR AS A RESULT OF THE TRANSACTIONS
CONTEMPLATED BY THIS AGREEMENT, 

    (F)  ANY LIABILITY OF DENTIST FOR COSTS AND EXPENSES (INCLUDING, WITHOUT
LIMITATION, ATTORNEYS' FEES) INCURRED IN CONNECTION WITH THE NEGOTIATION,
PREPARATION OF CLOSING OF THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT OR THE
OTHER DOCUMENTS TO BE EXECUTED IN CONNECTION HEREWITH,

    (G)  ANY ACCRUED UNFUNDED RETIREMENT OR PENSION PLAN LIABILITIES, 

    (H)  ANY LIABILITIES THAT ARE  NOT SET FORTH ON EXHIBIT 1.3(b), OR

    (I)  ANY LIABILITY UNDER THE SECURITIES ACT, THE EXCHANGE ACT OR ANY OTHER
FEDERAL OR STATE "BLUE SKY" OR SECURITIES LAWS OR REGULATION, AT COMMON LAW OR
OTHERWISE, ARISING OUT OF OR BASED UPON ANY UNTRUE STATEMENT OR ALLEGED UNTRUE
STATEMENT OF A MATERIAL FACT RELATING TO DENTIST AND PROVIDED TO PENTEGRA OR ITS
COUNSEL BY THE DENTIST SPECIFICALLY FOR INCLUSION IN ANY PRELIMINARY PROSPECTUS,
THE REGISTRATION STATEMENT OR ANY PROSPECTUS FORMING A PART THEREOF, OR ANY
AMENDMENT THEREOF OR SUPPLEMENT THERETO, ARISING OUT OF OR BASED UPON ANY
OMISSION OR ALLEGED OMISSION TO STATE THEREIN A MATERIAL FACT RELATING TO
DENTIST REQUIRED TO BE STATED THEREIN OR NECESSARY TO MAKE THE STATEMENTS
THEREIN NOT MISLEADING.

                                       17 
<PAGE>

IN CONNECTION WITH INDEMNITOR'S OBLIGATION TO INDEMNIFY FOR EXPENSES, INDEMNITOR
SHALL REIMBURSE EACH INDEMNIFIED PERSON FOR ALL SUCH EXPENSES AS THEY ARE
INCURRED BY SUCH INDEMNIFIED PERSON, PROVIDED THAT SUCH INDEMNIFIED PERSON
AGREES IN WRITING TO REFUND ALL SUCH REIMBURSED EXPENSES IF AND TO THE EXTENT
THAT IT IS FINALLY JUDICIALLY DETERMINED THAT SUCH INDEMNIFIED PERSON IS NOT
ENTITLED TO INDEMNIFICATION HEREUNDER.

    10.4 INDEMNIFICATION PROCEDURE.  Within sixty (60) days after Indemnified
Person receives written notice of the commencement of any action or other
proceeding in respect of which indemnification or reimbursement may be sought
hereunder, or within such lesser time as may be provided by law for the defense
of such action or proceeding, such Indemnified Person shall notify Indemnitor
thereof.  If any such action or other proceeding shall be brought against any
Indemnified Person, Indemnitor shall, upon written notice given within a
reasonable time following receipt by Indemnitor of such notice from Indemnified
Person, be entitled to assume the defense of such action or proceeding with
counsel chosen by Indemnitor and reasonably satisfactory to Indemnified Person;
provided, however, that any Indemnified Person may at its own expense retain
separate counsel to participate in such defense.  Notwithstanding the foregoing,
Indemnified Person shall have the right to employ separate counsel at
Indemnitor's expense and to control its own defense of such action or proceeding
if, in the reasonable opinion of counsel to such Indemnified Person, (a) there
are or may be legal defenses available to such Indemnified Person or to other
Indemnified Persons that are different from or additional to those available to
Indemnitor and which could not be adequately advanced by counsel chosen by
Indemnitor, or (b) a conflict or potential conflict exists between Indemnitor
and such Indemnified Person that would make such separate representation
advisable; provided, however, that in no event shall Indemnitor be required to
pay fees and expenses hereunder for more than one firm of attorneys of
Indemnified Person in any jurisdiction in any one action or proceeding or group
of related actions or proceedings.  Indemnitor shall not, without the prior
written consent of any Indemnified Person, settle or compromise or consent to
the entry of any judgment in any pending or threatened claim, action or
proceeding to which such Indemnified Person is a party unless such settlement,
compromise or consent includes an unconditional release of such Indemnified
Person from all liability arising or potentially arising from or by reason of
such claim, action or proceeding.

    10.5 RIGHT OF SETOFF.  In the event of any breach of warranty,
representation, covenant or agreement by Dentist giving rise to indemnification
under SECTION 10.3 or SECTION 10.4 hereof, Pentegra shall be entitled to offset
the amount of damages incurred by it as a result of such breach of warranty,
representation, covenant or agreement against any amounts payable by Pentegra,
including the amounts payable under the Service Agreement.  

SECTION 11.  TERMINATION.  This Agreement may be terminated:

    (a)  at any time by mutual agreement of all parties;

    (b)  at any time by Pentegra if any representation or warranty of Dentist
contained in this Agreement or in any certificate or other document executed and
delivered by Dentist pursuant to this Agreement is or becomes untrue or breached
in any material respect or if Dentist fails to comply in any material respect
with any covenant or agreement contained herein, and any such misrepresentation,
noncompliance or breach is not cured, waived or eliminated within twenty (20)
days after receipt of written notice thereof;

    (c)  at any time by Dentist if any representation or warranty of Pentegra
contained in this Agreement or in any certificate or other document executed and
delivered by Pentegra pursuant to this Agreement is or becomes untrue or
breached in any material respect or if Pentegra fails to comply in any material
respect with any covenant or agreement contained herein and such
misrepresentation, noncompliance or breach is not cured, waived or eliminated
within twenty (20) days after receipt of written notice thereof;

    (d)  by Pentegra or Dentist if the transaction contemplated hereby shall
not have been consummated by December 31, 1997; or 

                                       18 
<PAGE>

    (e)  by Pentegra at any time prior to the Closing Date if Pentegra
determines in its sole discretion as the result of its legal, financial and
operational due diligence with respect to Dentist, that such termination is
desirable and in the best interests of Pentegra. 

SECTION 12.  TRANSFER REPRESENTATIONS.  

    12.1 TRANSFER RESTRICTIONS. For a period of one year from the Closing Date,
Dentist shall not voluntarily (a) sell, assign, exchange, transfer, encumber,
pledge, distribute, appoint or otherwise dispose of (i) any shares of Pentegra
Common Stock received by such party hereunder, (ii) any interest (including
without limitation, an option to buy or sell) in any shares of Pentegra Common
Stock, in whole or in part, and no such attempted transfer shall be treated as
effective for any purpose or (b) engage in any transaction, whether or not with
respect to any shares of Pentegra Common Stock or any interest therein, the
intent or effect of which is to reduce the risk of owning shares of Pentegra
Common Stock.  The certificates evidencing the Pentegra Common Stock delivered
to Dentist pursuant to the terms hereof will bear a legend substantially in the
form set forth below and containing such other information as Pentegra may deem
necessary or appropriate:

    The shares represented by this certificate may not be voluntarily sold,
    assigned, exchanged, transferred, encumbered, pledged, distributed,
    appointed or otherwise disposed of, and the issuer shall not be required to
    give effect to any attempted voluntary sale, assignment, exchange,
    transfer, encumbrance, pledge, distribution, appointment or other
    disposition prior to _________ [date that is one year from the Closing
    Date].  Upon the written request of the holder of this certificate, the
    issuer agrees to remove this restrictive legend (and any stop order placed
    with the transfer agent) after the date specified above.

    12.2 INVESTMENTS; COMPLIANCE WITH LAW.  Dentist acknowledges that the
shares of Pentegra Common Stock to be delivered to Dentist pursuant to this
Agreement have not been and will not be registered under the Securities Act of
1933 and may not be resold without compliance with the Securities Act of 1933. 
The Pentegra Common Stock to be acquired by Dentist pursuant to this Agreement
is being acquired solely for its own account, for investment purposes only and
with no present intention of distributing, selling or otherwise disposing of it
in connection with a distribution.  Dentist covenants, warrants and represents
that none of the shares of Pentegra Common Stock issued to it will be offered,
sold, assigned, pledged, hypothecated, transferred or otherwise disposed of
except after full compliance with all of the applicable provisions of the
Securities Act, as amended, and the rules and regulations of the Securities
Exchange Commission and applicable state securities laws and regulations.  All
certificates evidencing shares of Pentegra Common Stock shall bear the following
legend in addition to the legend referenced in SECTION 12.1. 

    The shares represented hereby have not been registered under the Securities
    Act of 1933 (the "Act") and may only be sold or otherwise transferred if
    the holder hereof complies with the Act and applicable securities laws.

    In addition, certificates evidencing shares of Pentegra Common Stock shall
bear any legend required by the securities or blue sky laws of any state where
Dentist resides.

    12.3 ECONOMIC RISK; SOPHISTICATION.  Dentist is able to bear the economic
risk of an investment in Pentegra Common Stock  acquired pursuant to this
Agreement and can afford to sustain a total loss of such investment and has such
knowledge and experience in financial and business matters that they are capable
of evaluating the merits and risks of the proposed investment and therefore have
the capacity to protect its own interests in connection with the acquisition of
the Pentegra Common Stock.  Dentist and its representatives have had an adequate
opportunity to ask questions and receive answers from the officers of Pentegra
concerning any and all matters relating to the background and experience of the
officers and directors of Pentegra, the plans for the operations of the business
of Pentegra, and any plans for additional acquisitions and the like.  Dentist
and its representatives have asked any and all questions in the nature described
in the preceding sentence and all questions have been answered to their
satisfaction.  Dentist is an "accredited investors" as defined in Regulation D
of the Securities Act of 1933, as amended.

SECTION 13.  NONDISCLOSURE OF CONFIDENTIAL INFORMATION.  Dentist recognizes
and acknowledges that it had in the past, currently have, and in the future may
possibly have, access to certain confidential information of Pentegra that is

                                       19 
<PAGE>

valuable, special and unique assets of Pentegra's businesses.  Dentist agrees
that it will not disclose such confidential information to any person, firm,
corporation, association or other entity for any purpose or reason whatsoever,
unless (i) such information becomes available to or known by the public
generally through no fault of Dentist, (ii) disclosure is required by law or the
order of any governmental authority under color of law, provided, that prior to
disclosing any information pursuant to this clause (ii), Dentist shall, if
possible, give prior written notice thereof to the other parties hereto, and
provide such other parties hereto with the opportunity to contest such
disclosure, (iii) Dentist reasonably believes that such disclosure is required
in connection with the defense of a lawsuit against the disclosing party, or
(iv) Dentist is the sole and exclusive owner of such confidential information as
a result of the transactions contemplated hereunder or otherwise.  In the event
of a breach or threatened breach by Dentist of the provisions of this SECTION
13, Pentegra shall be entitled to an injunction restraining Dentist from
disclosing, in whole or in part, such confidential information.  Nothing herein
shall be construed as prohibiting Pentegra from pursuing any other available
remedy for such breach or threatened breach, including the recovery of damages.
The obligations of the parties under this SECTION 13 shall survive the
termination of this Agreement.

SECTION 14.  MISCELLANEOUS.

    14.1 TAX COVENANT.  The parties intend that the transactions contemplated
by this Agreement, together with the transactions contemplated by the Other
Agreement and the Initial Public Offering, will qualify as an exchange meeting
the requirements of Section 351 of the Code.  The tax returns (and schedules
thereto) of  Dentist and Pentegra  shall be filed in a manner consistent with
such intention and Dentist and Pentegra shall each provide the other with such
tax information, reports, returns or schedules as may be reasonably required to
assist the other in so reporting the transactions contemplated hereby. 

    14.2 NOTICES.  Any communications required or desired to be given hereunder
shall be deemed to have been properly given if sent by hand delivery, or by
facsimile AND overnight courier, to the parties hereto at the following
addresses, or at such other address as either party may advise the other in
writing from time to time:

    If to Pentegra:

    Pentegra Dental Group, Inc.
    2999 N. 44th Street, Suite 650
    Phoenix, Arizona 85018
    Attn: President 
    Facsimile: (602) 952-0554 

    with a copy of each notice directed to Pentegra to:

    James S. Ryan, III, Esquire
    Jackson Walker L.L.P.
    901 Main Street
    Dallas, Texas 75202
    Facsimile: (214) 953-5822

    If to Dentist: 

    To address set forth on EXHIBIT 14.2
    
    with a copy to:

    Person and address set forth on EXHIBIT 14.2

                                       20 
<PAGE>

All such communications shall be deemed to have been delivered on the date of
hand delivery or on the next business day following the deposit of such
communications, properly addressed and postage prepaid with the overnight
courier.

    14.3 FURTHER ASSURANCES.  Each party hereby agrees to perform any further
acts and to execute and deliver any documents which may be reasonably necessary
to carry out the provisions of this Agreement.

    14.4 EACH PARTY TO BEAR COSTS.  Subject to SECTION 14.12, each of the
parties to this Agreement shall pay all of the costs and expenses incurred by
such party in connection with the transactions contemplated by this Agreement,
whether or not such transactions are consummated.  Without limiting the
generality of the foregoing and whether or not such liabilities may be deemed to
have been incurred in the ordinary course of business, Pentegra shall not be
liable to or required to pay, either directly or indirectly, any fees and
expenses of legal counsel, accountants, auditors or other persons or entities
retained by Dentist for services rendered in connection with negotiating and
closing the transactions contemplated by this Agreement or the documents to be
executed in connection herewith, whether or not such costs or expenses are
incurred before or after the Closing Date. 

    14.5 PUBLIC DISCLOSURES.  Each party shall keep this Agreement and its
terms confidential, and shall make no press release or public disclosure, either
written or oral, regarding the transactions contemplated by this Agreement
without the prior written consent of the other party, provided that the
foregoing shall not prohibit any disclosure (a) by press release, filing or
otherwise that Pentegra has determined in good faith judgment to be required by
Federal  securities laws or the rules of the National Association of Securities
Dealers, (b) to attorneys, accountants, investment bankers or other agents of
the parties assisting the parties in connection with the transactions
contemplated by this Agreement, and (c) by Pentegra in connection with the
conduct of its Initial Public Offering and conducting an examination of the
operations and assets of Dentist.

    14.6 GOVERNING LAW.  THIS AGREEMENT SHALL BE INTERPRETED, CONSTRUED AND
ENFORCED IN ACCORDANCE WITH THE LAWS OF THE STATE OF INCORPORATION OF Dentist
AND APPLIED WITHOUT GIVING EFFECT TO ANY CONFLICTS OF LAWS PRINCIPLES.

    14.7 CAPTIONS. The captions or headings in this Agreement are made for
convenience and general reference only and shall not be construed to describe,
define or limit the scope or intent of the provisions of this Agreement.

    14.8 INTEGRATION OF EXHIBITS.  All Exhibits attached to this Agreement are
integral parts of this Agreement as if fully set forth herein, and all
statements appearing therein shall be deemed disclosed for all purposes and not
only in connection with the specific representation in which they are explicitly
referenced.

    14.9 ENTIRE AGREEMENT/AMENDMENT.  THIS INSTRUMENT, INCLUDING ALL EXHIBITS
ATTACHED HERETO, CONTAINS THE ENTIRE AGREEMENT OF THE PARTIES AND SUPERSEDES ANY
AND ALL PRIOR OR CONTEMPORANEOUS AGREEMENTS BETWEEN THE PARTIES, WRITTEN OR
ORAL, WITH RESPECT TO THE TRANSACTIONS CONTEMPLATED HEREBY.

    14.10 COUNTERPARTS.  This Agreement may be executed in several counterparts,
each of which when so executed shall be deemed to be an original, and such 
counterparts shall together constitute and be one and the same instrument.

    14.11 BINDING EFFECT/ASSIGNMENT.  This Agreement shall be binding on,
and shall inure to the benefit of, the parties hereto, and their respective
successors and assigns, and no other person shall acquire or have any right
under or by virtue of this Agreement.  No party may assign any right or
obligation hereunder without the prior written consent of the other parties;
provided, however, that Pentegra may assign its rights and delegate its
obligations hereunder to any entity that is an affiliate of Pentegra.  For
purposes of this Agreement an "affiliate" of Pentegra shall include any entity
that, through one or more intermediaries is, controlled, controlled by or under
common control with, Pentegra.  Upon any such assignment prior to the Closing,
all references herein to Pentegra (including those to Pentegra Common Stock)
shall be deemed to include references to the assignee and the assignee's common
stock.  Notwithstanding any such assignment, Pentegra shall not, absent a
written release from Dentist, be relieved from its obligations to Dentist under
this Agreement. 

                                       21 
<PAGE>

    14.12  COSTS OF ENFORCEMENT. In the event that Pentegra, on the one hand, 
or Dentist, on the other hand, file suit in any court against any other party 
to enforce the terms of this Agreement against the other party or to obtain 
performance by it hereunder, the prevailing party will be entitled to recover 
all reasonable costs, including reasonable attorneys' fees, from the other 
party as part of any judgment in such suit. The term "prevailing party" shall 
mean the party in whose favor final judgment after appeal (if any) is rendered 
with respect to the claims asserted in the Complaint.  "Reasonable attorneys' 
fees" are those reasonable attorneys' fees actually incurred in obtaining a 
judgment in favor of the prevailing party.

    14.13 PRORATIONS.  Dentist agrees to reimburse Pentegra at Closing a pro 
rata portion of all taxes levied upon the Assets for the calendar year in 
which the Closing occurs.  Such taxes shall be estimated, apportioned and 
pro-rated among Dentist and Pentegra as of the Closing Date, and the prorated 
amount due Pentegra shall be credited to the cash portion of the Purchase 
Consideration.  Upon payment by Pentegra of such taxes actually assessed and 
paid on the Assets, Pentegra shall calculate the apportionment of such taxes 
and shall pay Dentist or may demand from Dentist, and Dentist agrees to pay, 
the amount necessary to correct the estimate and proration made at Closing.

    14.14  AMENDMENTS; WAIVERS. This Agreement may be amended, modified or 
supplemented only by an instrument in writing executed by all the parties 
hereto.  Any waiver of the terms and conditions hereof must be in writing, 
and signed by the parties hereto.  The waiver of any of the terms and 
conditions of this Agreement shall not be construed as a waiver of any other 
terms and conditions hereof.

    14.15  ARBITRATION.  Upon the request of either Pentegra or the Dentist 
(hereinafter referred to as a "Party"), whether made before or after the 
institution of any legal proceeding, any dispute among the parties hereto  in 
any way arising out of, related to, or in connection with this Agreement 
(hereinafter a "Dispute"), shall be resolved by binding arbitration in 
accordance with the terms of this Section (hereinafter the "Arbitration 
Program").

    All Disputes between the Parties shall be resolved by binding arbitration
administered by the American Arbitration Association (the "AAA") in accordance
with the terms of this Arbitration Program, the Commercial Arbitration Rules of
the AAA.  In the event of any inconsistency between this Arbitration Program and
those rules or statutes, then the terms of this Arbitration Program shall
control.

    The parties hereto agree to adhere to all warranties and covenants (as
described herein) until such time as the arbitration process has been completed
and the arbitrators have determined each party's post-arbitration obligations
and responsibilities as it relates to such warranties and covenants.  No
provision of, nor the exercise of any rights under, this Arbitration Program
shall limit the right of any Party at any time to seek or use ancillary or
preliminary judicial or non-judicial self help remedies for the purposes of
obtaining, perfecting, preserving, or foreclosing upon any personal property in
which there has been granted a security interest or lien by a Party in the
Documents.  In Disputes involving indebtedness or other monetary obligations,
each Party agrees that the other Party may proceed against all liable persons,
jointly and severally against one or more of them, without impairing rights
against other liable persons.  Nor shall a Party be required to join the
principal obligor or any other liable persons (e.g., sureties or guarantors) in
any proceeding against a particular person.  A Party may release or settle with
one or more liable persons as the Party deems fit without releasing or impairing
rights to proceed against any persons not so released.  All statutes of
limitation that would otherwise be applicable shall apply to any arbitration
proceeding.

    The party seeking arbitration shall notify the other Party, in writing, of
that Party's desire to arbitrate a dispute; and each Party shall, within twenty
(20) days from the date such notification is received, select an arbitrator, and
those two arbitrators shall select a third arbitrator within ten (10) days
thereafter.  The issues or claims in dispute shall be committed to writing,
separately stated and numbered, and each party's proposed answers or contentions
shall be signed below the questions. Failure by a party to select an arbitrator
within the prescribed time period shall serve as that Party's acquiescence and
acceptance of the other party's selection of arbitrator. The arbitrators shall
resolve all Disputes in accordance with the applicable substantive law.  Any
Dispute shall be decided by a majority vote of three arbitrators, unless the
claim or amount in controversy does not exceed $100,000.00, in which case a
single arbitrator (who shall have authority to render a maximum award of
$100,000.00, including all damages of any kind, costs and fees) may decide the
Dispute. The arbitrators may grant any remedy or relief that the arbitrators
deem just and equitable and within the scope of this Arbitration Program.  The
arbitrators may also grant such ancillary relief 

                                       22 
<PAGE>

as is necessary to make effective the award.  In all arbitration proceedings the
arbitrators shall make specific and written findings of fact and conclusions of 
law.  In all arbitration proceedings in which the amount in controversy exceeds 
$100,000.00, in the aggregate, the Parties shall have in addition to the 
statutory right to seek vacation or modification of any award pursuant to 
applicable law, the right to seek vacation or modification of any award that is 
based in whole, or in part, on an incorrect or erroneous ruling of law by appeal
to an appropriate court having jurisdiction; provided, however, that any such 
application for vacation or modification of an award based on an incorrect 
ruling of law must be filed in a court having jurisdiction over the Dispute 
within 15 days from the date the award in rendered.  The arbitrators' findings 
of fact shall be binding on all Parties and shall not be subject to further 
review except as otherwise allowed by applicable law.

    To the maximum extent practicable, an arbitration proceeding hereunder
shall be concluded within 180 days of the filing of the Dispute with AAA. 
Arbitration proceedings hereunder shall be conducted where agreed to in writing
by the Parties or, in the absence of such agreement in Phoeniz, Arizona or the
headquarters of Pentegra if other than Phoeniz, Arizona.  The provisions of this
Arbitration Program shall survive any termination, amendment, or expiration of
the Documents, unless the Parties otherwise expressly agree in writing making
specific reference to this Arbitration Program.  To the extent permitted by
applicable law, the arbitrator shall have the power to award recovery of all
costs and fees (including attorney's fees, administrative fees, and arbitrators'
fees) to the prevailing Party.  This Arbitration Program may be amended,
changed, or modified only by a writing which specifically refers to this
Arbitration Program and which is signed by all the Parties.  If any term,
covenant, condition or provision of the Arbitration Program is found to be
unlawful or invalid or unenforceable, such illegality or invalidity or
unenforceable shall not affect the legality, validity or enforceability of the
remaining parts of this Arbitration Program, and all such remaining parts hereof
shall be valid and enforceable and have full force and effect as if the illegal,
invalid or unenforceable part had not been included.  Each Party agrees to keep
all Disputes and arbitration proceedings strictly confidential, except for
disclosures of information required in the ordinary course of business of the
Parties or by applicable law or regulation.

    14.16  SEVERABILITY.  If any provision of this Agreement shall be found
to be illegal, invalid or unenforceable under present or future laws, such
provision shall be fully severable and this Agreement shall be construed and
enforced as if such provision never comprised a part hereof; and the remaining
provisions hereof shall remain in full force and effect.  In lieu of such
provision, there shall be added automatically as part of this Agreement, a
provision as similar in its terms to such provision as may be possible and be
legal, valid and enforceable.

                                    [End of Page]














                                       23 
<PAGE>

    IN WITNESS WHEREOF, the parties have executed this Agreement as of the day
and year first above written.


                                       PENTEGRA DENTAL GROUP, INC. 



                                       By:
                                           ---------------------------------- 
                                       Its:
                                           ---------------------------------- 



                                       -------------------------------------- 

                                       ----------------------- 
                                                              , D.D.S. 























                                       24 
<PAGE>
                                  INDEX TO EXHIBITS


    EXHIBIT                  DESCRIPTION 
    -------                  ----------- 

    Annex I        Acquisition Consideration
    A              Target Companies
    1.1            Assets
    1.2(b)         Excluded Assets
    1.3(b)         Assumed Liabilities
    2.1            [intentionally omitted]
    2.3            Permits and Licenses
    2.4            Consents
    2.8            Leases
    2.10           Real and Personal Property; Encumbrances
    2.12           Patents and Trademarks; Names
    2.13           Payroll Information; Employment Agreements
    2.15           Contracts (other than Leases and Employment Agreements) 
    2.16           Subsequent Events
    2.19           Debt
    2.20           Insurance Policies
    2.21           Employee Benefit Plans
    2.26           Banking Relations
    2.28           Payors
    7.7            Form of Service Agreement
    7.8            Form of Employment Agreement
    9.1(l)         Form of Registration Rights Agreement
    14.2           Addresses for Notice





                                       25 
<PAGE>

                                       ANNEX I

                              ACQUISITION CONSIDERATION


    The aggregate consideration to be received by the Dentist pursuant to the
Agreement (the "Acquisition Consideration") is the following: 


    Shares of Pentegra Common Stock equal to $_________ divided by the initial
public offering price of Pentegra. 

    Cash in the amount of $________________________.

    No fractional shares of Pentegra Common Stock will be issued; rather,
shares of Pentegra Common Stock to be issued to Dentist shall be rounded to the
nearest whole share. 
                                                 






















                                       26 

<PAGE>

                                                                   EXHIBIT 2.2



                         FORM OF ASSET CONTRIBUTION AGREEMENT

                                     BY AND AMONG


                            PENTEGRA DENTAL GROUP, INC., 

                  __________________________________ [target entity]

                                         and

                                           
                      _______________________________[partners] 

<PAGE>

                                  TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                                 Page
                                                                                 ----
<S>                                                                              <C>
Section 1.  TERMS OF THE CONTRIBUTION
    1.2     CONTRIBUTION OF ASSETS . . . . . . . . . . . . . . . . . . . . . . . . .1
    1.3     EXCLUDED ASSETS. . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
    1.4     PURCHASE PRICE; ASSUMPTION OF LIABILITIES. . . . . . . . . . . . . . . .2
    1.5     SUBSEQUENT ACTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Section 2.  REPRESENTATIONS AND WARRANTIES OF CONTRIBUTOR AND PARTNERS.
    2.1     EXISTENCE; GOOD STANDING . . . . . . . . . . . . . . . . . . . . . . . .2
    2.2     POWER AND AUTHORITY FOR TRANSACTIONS . . . . . . . . . . . . . . . . . .3
    2.3     PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS. . . . . . . . . . . .3
    2.4     CONSENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
    2.5     DISTRIBUTIONS AND REPURCHASES. . . . . . . . . . . . . . . . . . . . . .3
    2.6     CORPORATE RECORDS. . . . . . . . . . . . . . . . . . . . . . . . . . . .3
    2.7     CONTRIBUTOR'S FINANCIAL INFORMATION. . . . . . . . . . . . . . . . . . .3
    2.8     LEASES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
    2.9     CONDITION OF ASSETS. . . . . . . . . . . . . . . . . . . . . . . . . . .4
    2.10    TITLE TO AND ENCUMBRANCES ON PROPERTY. . . . . . . . . . . . . . . . . .4
    2.11    INVENTORIES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
    2.12    INTELLECTUAL PROPERTY RIGHTS; NAMES. . . . . . . . . . . . . . . . . . .4
    2.13    PAYROLL INFORMATION; EMPLOYEES . . . . . . . . . . . . . . . . . . . . .4
    2.14    LEGAL PROCEEDINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . .4
    2.15    CONTRACTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
    2.16    SUBSEQUENT EVENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . .5
    2.17    TAXES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
    2.18    COMMISSIONS AND FEES . . . . . . . . . . . . . . . . . . . . . . . . . .7
    2.19    LIABILITIES; DEBT. . . . . . . . . . . . . . . . . . . . . . . . . . . .7
    2.20    INSURANCE POLICIES . . . . . . . . . . . . . . . . . . . . . . . . . . .7
    2.21    EMPLOYEE BENEFIT PLANS . . . . . . . . . . . . . . . . . . . . . . . . .7
    2.22    ADVERSE AGREEMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . .7
    2.23    COMPLIANCE WITH LAWS IN GENERAL. . . . . . . . . . . . . . . . . . . . .8
    2.24    THIRD PARTY PAYORS . . . . . . . . . . . . . . . . . . . . . . . . . . .8
    2.25    NO UNTRUE REPRESENTATIONS. . . . . . . . . . . . . . . . . . . . . . . .8
    2.26    BANKING RELATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . .8
    2.27    OWNERSHIP INTERESTS OF INTERESTED PERSONS; COMPETITORS . . . . . . . . .8
    2.28    PAYORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Section 3.  REPRESENTATIONS AND WARRANTIES OF PENTEGRA
    3.1     CORPORATE EXISTENCE: GOOD STANDING . . . . . . . . . . . . . . . . . . .9
    3.2     POWER AND AUTHORITY; CONSENTS. . . . . . . . . . . . . . . . . . . . . .9
    3.3     PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS. . . . . . . . . . . .9
    3.4     LEGAL PROCEEDINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . .9
    3.5     TAXES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
    3.6     COMMISSIONS AND FEES . . . . . . . . . . . . . . . . . . . . . . . . . .9
    3.7     CAPITAL STOCK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
    3.8     NO UNTRUE REPRESENTATIONS. . . . . . . . . . . . . . . . . . . . . . . 10

Section 4.  COVENANTS OF CONTRIBUTOR AND PARTNERS.
    4.1     CONSUMMATION OF AGREEMENT; EXHIBITS. . . . . . . . . . . . . . . . . . 10

                                       -i-

<PAGE>

    4.2     BUSINESS OPERATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . 10

    4.3     ACCESS AND NOTICE. . . . . . . . . . . . . . . . . . . . . . . . . . . 10
    4.4     APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS. . . . . . . . . . 10
    4.5     ACQUISITION PROPOSALS. . . . . . . . . . . . . . . . . . . . . . . . . 10
    4.6     FUNDING OF ACCRUED EMPLOYEE BENEFITS . . . . . . . . . . . . . . . . . 10
    4.7     EMPLOYEE MATTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
    4.8     DISTRIBUTIONS AND REPURCHASES. . . . . . . . . . . . . . . . . . . . . 11
    4.9     REQUIREMENTS TO EFFECT ACQUISITION . . . . . . . . . . . . . . . . . . 11
    4.10    ACCOUNTING AND TAX MATTERS . . . . . . . . . . . . . . . . . . . . . . 11
    4.11    WAIVER OF BULK TRANSFER COMPLIANCE . . . . . . . . . . . . . . . . . . 11
    4.12    LEASE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
    4.13    HIRING OF EMPLOYEES. . . . . . . . . . . . . . . . . . . . . . . . . . 11
    4.14    EMPLOYEE BENEFIT PLANS . . . . . . . . . . . . . . . . . . . . . . . . 11
    4.15    INSURANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Section 5.  COVENANTS OF PENTEGRA
    5.1     CONSUMMATION OF AGREEMENT; EXHIBITS. . . . . . . . . . . . . . . . . . 12
    5.2     APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS. . . . . . . . . . 12

Section 6.  COVENANTS OF PENTEGRA AND CONTRIBUTOR AND PARTNERS
    6.1     FILINGS; OTHER ACTIONS . . . . . . . . . . . . . . . . . . . . . . . . 12

Section 7.  PENTEGRA CONDITIONS PRECEDENT
    7.1     REPRESENTATIONS AND WARRANTIES . . . . . . . . . . . . . . . . . . . . 12
    7.2     COVENANTS AND CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . 13
    7.3     PROCEEDINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
    7.4     NO MATERIAL ADVERSE CHANGE . . . . . . . . . . . . . . . . . . . . . . 13
    7.5     DUE DILIGENCE REVIEW . . . . . . . . . . . . . . . . . . . . . . . . . 13
    7.6     APPROVAL BY THE BOARD OF DIRECTORS . . . . . . . . . . . . . . . . . . 13
    7.7     SERVICE AGREEMENT; GUARANTY AGREEMENT. . . . . . . . . . . . . . . . . 13
    7.8     EMPLOYMENT ARRANGEMENTS. . . . . . . . . . . . . . . . . . . . . . . . 13
    7.9     CONSENTS AND APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . 13
    7.10    CLOSING DELIVERIES . . . . . . . . . . . . . . . . . . . . . . . . . . 13
    7.11    DEBT AND RECEIVABLES . . . . . . . . . . . . . . . . . . . . . . . . . 13
    7.12    INSURANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
    7.13    NO CHANGE IN WORKING CAPITAL . . . . . . . . . . . . . . . . . . . . . 13
    7.14    SECURITIES APPROVAL. . . . . . . . . . . . . . . . . . . . . . . . . . 13

Section 8.  CONTRIBUTOR'S AND PARTNERS' CONDITIONS PRECEDENT
    8.1     REPRESENTATIONS AND WARRANTIES . . . . . . . . . . . . . . . . . . . . 14
    8.2     COVENANTS AND CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . 14
    8.3     PROCEEDINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
    8.4     CLOSING DELIVERIES . . . . . . . . . . . . . . . . . . . . . . . . . . 14
    8.5     SECURITIES APPROVAL. . . . . . . . . . . . . . . . . . . . . . . . . . 14

Section 9.  CLOSING DELIVERIES
    9.1     DELIVERIES OF CONTRIBUTOR AND PARTNERS . . . . . . . . . . . . . . . . 14
    9.2     DELIVERIES OF PENTEGRA . . . . . . . . . . . . . . . . . . . . . . . . 15

Section 10. NATURE AND SURVIVAL OF REPRESENTATIONS AND WARRANTIES; INDEMNIFICATION
    10.1    NATURE AND SURVIVAL. . . . . . . . . . . . . . . . . . . . . . . . . . 16
    10.2    INDEMNIFICATION BY PENTEGRA. . . . . . . . . . . . . . . . . . . . . . 16
    10.3    INDEMNIFICATION BY CONTRIBUTOR AND PARTNERS. . . . . . . . . . . . . . 17

                                       -ii-

<PAGE>

    10.4    INDEMNIFICATION PROCEDURE. . . . . . . . . . . . . . . . . . . . . . . 18
    10.5    RIGHT OF SETOFF. . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Section 11. TERMINATION

Section 12. TRANSFER REPRESENTATIONS
    12.1    TRANSFER RESTRICTIONS. . . . . . . . . . . . . . . . . . . . . . . . . 19
    12.2    INVESTMENTS; COMPLIANCE WITH LAW . . . . . . . . . . . . . . . . . . . 19
    12.3    ECONOMIC RISK; SOPHISTICATION. . . . . . . . . . . . . . . . . . . . . 19

Section 13. NONDISCLOSURE OF CONFIDENTIAL INFORMATION

Section 14. MISCELLANEOUS
    14.1    TAX COVENANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
    14.2    NOTICES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
    14.3    FURTHER ASSURANCES . . . . . . . . . . . . . . . . . . . . . . . . . . 21
    14.4    EACH PARTY TO BEAR COSTS . . . . . . . . . . . . . . . . . . . . . . . 21
    14.5    PUBLIC DISCLOSURES . . . . . . . . . . . . . . . . . . . . . . . . . . 21
    14.6    GOVERNING LAW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
    14.7    CAPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
    14.8    INTEGRATION OF EXHIBITS. . . . . . . . . . . . . . . . . . . . . . . . 21
    14.9    ENTIRE AGREEMENT/AMENDMENT . . . . . . . . . . . . . . . . . . . . . . 21
    14.10   COUNTERPARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
    14.11   BINDING EFFECT/ASSIGNMENT. . . . . . . . . . . . . . . . . . . . . . . 21
    14.12   COSTS OF ENFORCEMENT . . . . . . . . . . . . . . . . . . . . . . . . . 21
    14.13   PRORATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
    14.14   AMENDMENTS; WAIVERS. . . . . . . . . . . . . . . . . . . . . . . . . . 22
    14.15   ARBITRATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
    14.16   SEVERABILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
</TABLE>

                                       -iii-

<PAGE>

                             ASSET CONTRIBUTION AGREEMENT

    This ASSET CONTRIBUTION AGREEMENT (this "Agreement"), made and executed 
as ________________, 1997, is by and among PENTEGRA  DENTAL GROUP, INC., a 
Delaware corporation ("Pentegra"), _____________________________________________
("Contributor") and __________________________________, partners of Contributor 
(referred to herein as "Partner" or "Partners"). 

                                     WITNESSETH:

    WHEREAS, Contributor operates a dental practice ("Business") and Pentegra 
is engaged in the business of  managing certain non-dentistry aspects of 
dental practices; 

    WHEREAS, Contributor desires to contribute to Pentegra, and Pentegra 
desires to receive from Contributor, certain assets of Contributor; 

    WHEREAS, Pentegra or its affiliated designee has entered into or intends 
to enter into Agreements and Plans of Reorganization, Asset Contribution 
Agreements and other acquisition agreements (collectively, the "Other 
Agreements") with such persons or entities or the stockholders of such 
entities listed on EXHIBIT A (together with Contributor, the "Target 
Companies");

    WHEREAS, it is intended for Federal income tax purposes that the 
transfers contemplated by this Agreement, the Other Agreements and Pentegra's 
initial public offering ("Initial Public Offering") of shares of its common 
stock, par value $.01 per share ("Pentegra Common Stock") shall qualify as an 
exchange within the meaning of Section 351 of the Internal Revenue Code of 
1986, as amended ("IRC" or "Code");

    WHEREAS, the consummation of the transfers to Pentegra pursuant to this 
Agreement is intended to occur in connection with, and is conditioned upon, 
the simultaneous consummation of the transfers contemplated by the Other 
Agreements and the Initial Public Offering. 

    NOW THEREFORE, in consideration of the mutual promises and covenants 
hereinafter set forth, and for other good and valuable consideration, the 
sufficiency of which are hereby acknowledged, the parties agree as follows:

SECTION 

1.  TERMS OF THE CONTRIBUTION.

    1.1     THE CLOSING.  The closing of the transactions contemplated hereby 
shall take place at 10:00 am local time, at the offices of Jackson Walker 
L.L.P., on the day on which the Initial Public Offering of Pentegra Common 
Stock is consummated.  The date on which the Closing occurs is hereinafter 
referred to as the "Closing Date". 

    1.2     CONTRIBUTION OF ASSETS.  Subject to and upon the terms and 
conditions contained herein, on the Closing Date, Contributor shall convey, 
transfer, deliver and assign to Pentegra or any affiliate of Pentegra 
designated by Pentegra all of Contributor's right, title and interest in and 
to those certain assets described on EXHIBIT 1.1 attached hereto 
(individually, "Asset", and collectively "Assets"), free and clear of all 
obligations, security interests, claims, liens and encumbrances, except as 
specifically assumed, or taken subject to, by Pentegra pursuant to SECTION 
1.3(b) hereof. 

    1.3     EXCLUDED ASSETS.  There shall be excluded from the Assets to be 
transferred and contributed hereunder, and Contributor shall retain all of 
its right, title and interest in and to, the assets not specifically 
transferred hereunder, including without limitation, the assets described on 
EXHIBIT 1.2 (the "Excluded Assets").

                                       1

<PAGE>

    1.4     PURCHASE PRICE; ASSUMPTION OF LIABILITIES.  As consideration for 
the Assets and the representations, warranties and agreements of Contributor 
contained herein, Pentegra shall, on the Closing Date:

            (a)    Cause to be transferred to Contributor the consideration 
specified in ANNEX I attached hereto (the "Acquisition Consideration"); and.  

            (b)    Except as otherwise provided herein, assume and perform or 
discharge on or after the Closing Date, the contracts, leases, obligations, 
commitments, liabilities and indebtedness of Contributor listed on EXHIBIT 
1.3(b) attached hereto to the extent that such obligations, commitments, 
liabilities and indebtedness  are current and not otherwise in default. (the 
"Assumed Liabilities").    Notwithstanding any contrary provision contained 
herein, Pentegra shall not be deemed to have assumed, nor shall Pentegra 
assume: (i) any liability, commitment or obligation or trade payable or 
indebtedness not specifically disclosed on EXHIBIT 1.3(b), (ii) any liability 
set forth on EXHIBIT 1.3(b) which may be incurred by reason of any breach of 
or default under such contracts, leases, commitments or obligations which 
occurred on or before the Closing Date; (iii) any liability for any employee 
benefits payable to employees of Contributor, including, but not limited to, 
liabilities arising under any Contributor Plan (as defined in SECTION 2.21 
hereof); (iv) any liability based upon or arising out of a violation of any 
antitrust or similar restraint-of-trade laws by Contributor or any Partner, 
including, without limiting the generality of the foregoing, any such 
antitrust liability which may arise in connection with agreements, contracts, 
commitments or orders for the sale of goods or provision of services by 
Contributor reflected on the books of Contributor at or prior to the Closing 
Date; (v) any liability based upon or arising out of any tortious or wrongful 
actions of Contributor, any licensed professional employee or independent 
contractor of Contributor or any Partner, (vi) any liability for the payment 
of any taxes of Contributor or any Partner, including without limitation, 
sales, use and other transfer taxes and income taxes arising from or by 
reason of the transactions contemplated by this Agreement; (vii) any 
indebtedness secured by deeds of trust or mortgages on real property; nor 
(viii) any liability incurred or to be incurred pursuant to any malpractice 
or other suits or actions pending against Contributor or any Partner. 

    1.5     SUBSEQUENT ACTIONS. If, at any time after the Closing Date, 
Pentegra shall consider or be advised that any deeds, bills of sale, 
assignments, assurances or any other actions or things are necessary or 
desirable to vest, perfect or confirm of record or otherwise in Pentegra its 
right, title or interest in, to or under any of the Assets or otherwise to 
carry out this Agreement, in return for the consideration set forth in this 
Agreement, Contributor and Partners shall execute and deliver all such deeds, 
bills of sale, assignments and assurances and take and do all such other 
actions and things as may be necessary or desirable to vest, perfect or 
confirm any and all right, title and interest in, to and under the Assets in 
Pentegra or otherwise to carry out this Agreement.

SECTION 2.  REPRESENTATIONS AND WARRANTIES OF CONTRIBUTOR AND PARTNERS.

    Contributor and Partners, jointly and severally, hereby represent and 
warrant to Pentegra as follows:

    2.1     EXISTENCE; GOOD STANDING.  Contributor is a partnership duly 
organized, validly existing and in good standing under the laws of the State 
of ___________.   Contributor has all necessary partnership power to own all 
of its assets and to carry on its business as such business is now being 
conducted. Contributor does not own stock in or control, directly or 
indirectly, any other corporation, association or business organization, nor 
is Contributor a party to any joint venture or partnership.  The Partners are 
the sole partners of Contributor and own all outstanding partnership 
interests free of all security interests, claims, encumbrances and liens in 
the amounts set forth on EXHIBIT 2.1.  Each partnreship interest of 
Contributor has been legally and validly issued and fully paid and 
nonassessable.  There are no outstanding (a) bonds, debentures, notes or 
other obligations the holders of which have the right to vote with the 
partners of Contributor on any matter, (b) securities of Contributor 
convertible into equity interests in Contributor, or (c) commitments, 
options, rights or warrants to issue any such equity interests in 
Contributor, to issue securities of Contributor convertible into such equity 
interests, or to redeem any securities of Contributor.  No partnership 
interests of Contributor have been issued or disposed of in violation of the 
preemptive rights, rights of first refusal or similar rights of any of 
Contributor's partners.  Contributor is not required to qualify to do 
business as a foreign corporation in any other state or jurisdiction by 
reason of its business, properties or activities in or relating to such other 
state or 

                                       2
<PAGE>

jurisdiction. Contributor does not have any assets, employees or offices in 
any state other than the state set forth in the first sentence of this 
SECTION 2.1.

    2.2     POWER AND AUTHORITY FOR TRANSACTIONS.  Contributor has the 
partnership power to execute, deliver and perform this Agreement and all 
agreements and other documents executed and delivered by it pursuant to this 
Agreement or to be executed and delivered on the Closing Date, and has taken 
all action required by law, its Partnership Agreement or otherwise, to 
authorize the execution, delivery and performance of this Agreement and such 
related documents.  Each Partner has the legal capacity to enter into and 
perform this Agreement and the other agreements to be executed and delivered 
in connection herewith.  Contributor has obtained the approval of its 
partners necessary to the consummation of the transactions contemplated 
herein.  This Agreement and all agreements and documents executed and 
delivered in connection herewith have been, or will be as of the Closing 
Date, duly executed and delivered by Contributor and Partners, as 
appropriate,  and constitute or will constitute the legal, valid and binding 
obligations of Contributor and Partners, enforceable against Contributor and 
Partners in accordance with their respective terms, except as may be limited 
by applicable bankruptcy, insolvency or similar laws affecting creditors' 
rights generally or the availability of equitable remedies. The execution and 
delivery of this Agreement, and the agreements executed and delivered 
pursuant to this Agreement or to be executed and delivered on the Closing 
Date, do not, and, subject to the receipt of consents described on EXHIBIT 
2.4, the consummation of the actions contemplated hereby will not, violate 
any provision of the Partnership Agreement of Contributor or any provisions 
of, or result in the acceleration of, any obligation under any mortgage, 
lien, lease, agreement, rent, instrument, order, arbitration award, judgment 
or decree to which Contributor or any Partner is a party or by which 
Contributor or any Partner is bound, or violate any material restrictions of 
any kind to which Contributor is subject, or result in any lien or 
encumbrance on any of Contributor's assets or the Assets.

    2.3     PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS.  All building 
or other permits, certificates of occupancy, concessions, grants, franchises, 
licenses, certificates of need and other governmental authorizations and 
approvals required for the conduct of the Business or the use of the Assets, 
or waivers thereof, have been duly obtained and are in full force and effect 
and are described on EXHIBIT 2.3.  There are no proceedings pending or, to 
the knowledge of Contributor and Partners, threatened, which may result in 
the revocation, cancellation or suspension, or any adverse modification, of 
any such licenses or permits. 

    2.4     CONSENTS.  Except as set forth on EXHIBIT 2.4, no consent, 
authorization, permit, license or filing with any governmental authority, any 
lender, lessor, any manufacturer or supplier or any other person or entity is 
required to authorize, or is required in connection with, the execution, 
delivery and performance of this Agreement and the agreements and documents 
contemplated hereby on the part of Contributor or Partners. 

    2.5     DISTRIBUTIONS AND REPURCHASES.  No distribution, payment or 
dividend of any kind has been declared or paid by Contributor on any of its 
partnership interests since the Balance Sheet Date.  No repurchase of any of 
Contributor's partnership interests has been approved, effected or is 
pending, or is contemplated by Contributor. 

    2.6     CORPORATE RECORDS.  True and correct copies of the Partnership 
Agreement and minutes of Contributor and all amendments thereto have been 
delivered to Pentegra.  The books of account of Contributor have been kept 
accurately in the ordinary course of business and the revenues, expenses, 
assets and liabilities of Contributor have been properly recorded in such 
books.

    2.7     CONTRIBUTOR'S FINANCIAL INFORMATION.  Contributor has heretofore 
furnished Pentegra with copies of its unaudited balance sheet and related 
unaudited statements of income, retained earnings and cash flows for its 
prior two full fiscal years, as well as copies of its unaudited balance sheet 
as of December 31, 1996 and June 30, 1997 (collectively, the "Balance Sheet" 
and the latest date thereof shall be referred to as the "Balance Sheet Date") 
and any related unaudited statements of income, retained earnings, schedule 
of accounts receivable, accounts payable and accrued liabilities, and cash 
flows for the twelve months then ended (collectively, with the related notes 
thereto, the "Financial Statements").  The Financial Statements fairly 
present the financial condition and results of operations of Contributor as 
of the dates and for the periods indicated and reflect all fixed and 
contingent liabilities of Contributor.

                                       3
<PAGE>

    2.8     LEASES.  EXHIBIT 2.8 attached hereto sets forth a list of all 
leases pursuant to which Contributor or any Partner leases, as lessor or 
lessee, real or personal property used in operating the Business, related to 
the Assets or otherwise.  All such leases listed on EXHIBIT 2.8 are valid and 
enforceable in accordance with their respective terms, and there is not under 
any such lease any existing default by Contributor, as lessor or lessee, or 
any condition or event of which any Partner or Contributor has knowledge 
which with notice or lapse of time, or both, would constitute a default, in 
respect of which Contributor or Partners have not taken adequate steps to 
cure such default or to prevent a default from occurring.

    2.9     CONDITION OF ASSETS.   All of the Assets are in good condition 
and repair subject to normal wear and tear and conform with all applicable 
ordinances, regulations and other laws, and Contributor and Partners have no 
knowledge of any latent defects therein.

    2.10    TITLE TO AND ENCUMBRANCES ON PROPERTY.  Contributor has good, 
valid and marketable title to all of the Assets, free and clear of any liens, 
claims, charges, exceptions or encumbrances, except for those, if any, which 
are set forth in EXHIBIT 2.10 attached hereto.  Contributor shall cause all 
encumbrances set forth on EXHIBIT 2.10 (other than those encumbrances 
indicated on EXHIBIT 1.3(b)) to be released or terminated prior to the 
Closing Date and evidence of such releases of liens and claims shall be 
provided to Pentegra on the Closing Date and the Assets shall not be used to 
satisfy such liens, claims or encumbrances.

    2.11    INVENTORIES.    All of the Assets constituting inventory are 
owned or used by Contributor, are in good, current, standard and merchantable 
condition and are not obsolete or defective.

    2.12    INTELLECTUAL PROPERTY RIGHTS; NAMES.  Except as set forth on 
EXHIBIT 2.12, Contributor has no right, title or interest in or to patents, 
patent rights, corporate names, assumed names, manufacturing processes, trade 
names, trademarks, service marks, inventions, specialized treatment 
protocols, copyrights, formulas and trade secrets or similar items.   Set 
forth in EXHIBIT 2.12 is a listing of all names of all predecessor companies 
of Contributor, including the names of any entities from whom Contributor 
previously acquired significant assets.  Except for off-the-shelf software 
licenses and except as set forth on EXHIBIT 2.12, Contributor is not a 
licensee in respect of any patents, trademarks, service marks, trade names, 
copyrights or applications therefor, or manufacturing processes, formulas or 
trade secrets or similar items and no such licenses are necessary for the 
conduct of the Business or the use of the Assets.  No claim is pending or has 
been made to the effect that the Assets or the present or past operations of 
Contributor in connection with the Assets or Business infringe upon or 
conflict with the asserted rights of others to any patents, patent rights, 
manufacturing processes, trade names, trademarks, service marks, inventions, 
licenses, specialized treatment protocols, copyrights, formulas, know-how and 
trade secrets.  Contributor has the sole and exclusive right to use all 
Assets constituting proprietary rights without infringing or violating the 
rights of any third parties and no consents of any third parties are required 
for the use thereof by Pentegra. 

    2.13    PAYROLL INFORMATION; EMPLOYEES.  Set forth on EXHIBIT 2.13 
attached hereto is a true and complete list, as of the date of this Agreement 
of: (a) the most recent payroll report of Contributor, showing all current 
employees of Contributor and their current levels of compensation, (b) 
promised increases in compensation of employees of Contributor that have not 
yet been effected, (c) oral or written employment agreements, consulting 
agreements or independent contractor agreements (and all amendments thereto) 
to which Contributor is a party, copies of which have been delivered to 
Pentegra, and (d) all employee manuals, materials, policies, procedures and 
work-related rules, copies of which have been delivered to Pentegra.  
Contributor is in compliance with all applicable laws, rules, regulations and 
ordinances respecting employment and employment practices.  Contributor has 
not engaged in any unfair labor practice. There are no unfair labor practices 
charges or complaints pending or threatened against Contributor, and 
Contributor has never been a party to any agreement with any union, labor 
organization or collective bargaining unit.

    2.14    LEGAL PROCEEDINGS.  Neither any Partner, Contributor nor the 
Business nor any of the Assets is subject to any pending, nor does 
Contributor or any Partner have knowledge of any threatened, litigation, 
governmental investigation, condemnation or other proceeding against or 
relating to or affecting Contributor, any Partner, the Business, the Assets 
or the transactions contemplated by this Agreement, and, to the knowledge of 
Contributor and Partners, no basis for any such action exists, nor is there 
any legal impediment of which Contributor or any Partner has 

                                       4
<PAGE>

knowledge to the continued operation of its business or the use of the Assets 
in the ordinary course, subject to consents set forth on EXHIBIT 2.4. 

    2.15    CONTRACTS.  Contributor has delivered to Pentegra true copies of 
all written, and disclosed to Pentegra all oral, outstanding contracts, 
obligations and commitments of Contributor ("Contracts"), entered into in 
connection with and related to the Assets or the Business, all of which are 
listed or incorporated by reference on EXHIBIT 2.8 (in the case of leases), 
EXHIBIT 2.13 (in the case of employment agreements) and EXHIBIT 2.15 (in the 
case of Contracts other than leases) attached hereto.  Except as otherwise 
indicated on such Exhibits, all of such Contracts are valid, binding and 
enforceable in accordance with their terms and are in full force and effect, 
and no defenses, offsets or counterclaims have been asserted or may be made 
by any party thereto.  Except as indicated on such Exhibits, there is not 
under any such Contract any existing default by Contributor or any Partner, 
or any condition or event of which Contributor or any Partner has knowledge 
which with notice or lapse of time, or both, would constitute a default.   
Contributor and Partners have no knowledge of any default by any other party 
to such Contracts. Contributor and Partners have not received notice of the 
intention of any party to any Contract to cancel or terminate any Contract 
and have no reason to believe that any amendment or change to any Contract is 
contemplated by any party thereto.  Other than those contracts, obligations 
and commitments listed on EXHIBIT 2.8, EXHIBIT 2.13 and EXHIBIT 2.15, 
Contributor are not a party to any material written or oral agreement 
contract, lease or arrangement, including without limitation, any is:

            (a)    Contract related to the Assets other than this Agreement;

            (b)    Employment, consulting or compensation agreement or 
arrangement;

            (c)    Labor or collective bargaining agreement;

            (d)    Lease agreement with respect to any property, whether as 
lessor or lessee;

            (e)    Deed, bill of sale or other document evidencing an interest 
in or agreement to purchase or sell real or personal property;

            (f)    Contract for the purchase of materials, supplies or equipment
(i) which is in excess of the requirements of the Business now booked or for 
normal operating inventories, or (ii) which is not terminable upon notice of 
thirty (30) days or less;

            (g)    Agreement for the purchase from a supplier of all or 
substantially all of the requirements of the Business of a particular product 
or service;

            (h)    Loan agreement or other contract for money borrowed or 
lent or to be borrowed or lent to another; 

            (i)    Contracts containing non-competition covenants; 

            (j)    Financial or similar contracts or agreements with patients 
of Contributor or Partners, oral or written, that provide for prepayments or 
deferred installment payments; or 

            (k)    Other contracts or agreements that involve either an 
unperformed commitment in excess of $1,000 or that terminate or can only be 
terminated by Contributor on more than 30 days after the date hereof.

    2.16    SUBSEQUENT EVENTS.  Other than as set forth on EXHIBIT 2.16, 
Contributor has not, since the Balance Sheet Date:

            (a)    Incurred any material obligation or liability (absolute, 
accrued, contingent or otherwise) or entered into any contract, lease, 
license or commitment, except in connection with the performance of this 
Agreement;  

                                       5
<PAGE>

            (b)    Discharged or satisfied any material lien or encumbrance, 
or paid or satisfied any material obligation or liability (absolute, accrued, 
contingent or otherwise) other than (i) liabilities shown or reflected on the 
Balance Sheet, (ii) liabilities incurred since the Balance Sheet Date in the 
ordinary course of business;

            (c)    Formed or acquired or disposed of any interest in any 
corporation, partnership, joint venture or other entity;

            (d)    Made any payments to or loaned any money to any person or 
entity other than in the ordinary course of business;

            (e)    Lost or terminated any employee, patient, customer or 
supplier that has or may have, individually or in the aggregate, a material 
adverse effect on the Business; 

            (f)    Increased or established any reserve for taxes or any 
other liability on its books or otherwise provided therefor, except as may 
have been required due to income or operations of Contributor since the 
Balance Sheet Date;

            (g)    Mortgaged, pledged or subjected to any lien, charge or 
other encumbrance any of the Assets, tangible or intangible;

            (h)    Sold or contracted to sell or transferred or contracted to 
transfer any of the Assets or any other assets used in the conduct of the 
Business, canceled any debts or claims or waived any rights, except in the 
ordinary course of business;

            (i)    Except in the ordinary course or business consistent with 
past practices, granted any increase in the rates of pay of employees, 
consultants or agents, or by means of any bonus or pension plan, contract or 
other commitment, increased the compensation of any officer, employee, 
consultant or agent;

            (j)    Authorized or incurred any capital expenditures in excess 
of Five Thousand and No/100 Dollars ($5,000.00);

            (k)    Except for this Agreement and any other agreement executed 
and delivered pursuant to this Agreement, entered into any material 
transaction other than in the ordinary course of business or permitted 
hereunder; 

            (l)    Redeemed, purchased, sold or issued any stock, bonds or 
other securities;

            (m)    Experienced damage, destruction or loss (whether or not 
covered by insurance) materially and adversely affecting any of its 
properties, assets or business or the Business or the Assets, or experienced 
any other material adverse change in its financial condition, assets, 
prospects, liabilities or business;

            (n)    Declared or paid a distribution, payment or dividend of 
any kind on the equity interests of Contributor; 

            (o)    Repurchased, approved any repurchase or agreed to 
repurchase any of Contributor's partnership interests; or 

            (p)    Suffered any material adverse change in the Business or to 
the Assets. 

    2.17    TAXES. (a)  Contributor has filed all tax returns (including tax 
reports and other statements) required to have been filed by it, and has paid 
all taxes (including any interest, penalty or additions thereto) required to 
have been paid by it.  All such tax returns are complete and accurate in all 
respects and properly reflect the relevant taxes for the periods covered 
thereby.    Contributor has not received any notice that any tax deficiency 
or delinquency has been  or may be asserted against Contributor.  There are 
no audits relating to taxes of Contributor pending or in process or, to the 
knowledge of Contributor, threatened.  Contributor is not currently the 
beneficiary of any waiver of any statute of 

                                       6
<PAGE>

limitations in respect of taxes nor of any extension of time within which to 
file any tax return or to pay any tax assessment or deficiency.  There are no 
liens or encumbrances relating to taxes on or threatened against any of the 
assets of Contributor.  Contributor has withheld and paid all taxes required 
by law to have been withheld and paid by it.  Neither Contributor nor any 
predecessor of Contributor is or has been a party to any tax allocation or 
sharing agreement or a member of an affiliated group of corporations filing a 
consolidated Federal income tax return.  Contributor has delivered to 
Pentegra correct and complete copies of Contributor's three most recently 
filed annual state, local and Federal income tax returns, together with all 
examination reports and statements of deficiencies assessed against or agreed 
to by Contributor during the three calendar year period preceding the date of 
this Agreement.  Contributor has neither made any payments, is obligated to 
make any payments, or is a party to any agreement that under any circumstance 
could obligate it to make any payments that will not be deductible under Code 
section 280G.

    (b)  Contributor does not intend to dispose of any of the shares of 
Pentegra Common Stock to be received hereunder and is not a party to any 
plan, arrangement or agreement for the disposition of such shares.  
Contributor and Partners have no knowledge, after due inquiry, of any such 
intent, plan, arrangement or agreement by any Partner.  Nothing contained 
herein shall prohibit Contributor from selling such shares of Pentegra Common 
Stock after the designated holding period and in accordance with SECTION 12.1 
hereof.

    2.18    COMMISSIONS AND FEES.  There are no claims for brokerage 
commissions or finder's or similar fees in connection with the transactions 
contemplated by this Agreement which may be now or hereafter asserted against 
Pentegra, Contributor or Contributor's Partners resulting from any action 
taken by Contributor or any Partner or their respective agents or employees, 
or any of them.

    2.19    LIABILITIES; DEBT.  Except to the extent reflected or reserved 
against on the Balance Sheet, Contributor did not have, as of the Balance 
Sheet Date, and has not incurred since that date and will not have incurred 
as of the Closing Date, any liabilities or obligations of any nature, whether 
accrued, absolute, contingent or otherwise, and whether due or to become due, 
other than those incurred in the ordinary course of business or as set forth 
on EXHIBIT 2.16.  Contributor and Partners do not know, or have reasonable 
grounds to know, of any basis for the assertion against Contributor or any 
Partner as of the Balance Sheet Date, of any claim or liability of any nature 
in any amount not fully reflected or reserved against on the Balance Sheet, 
or of any claim or liability of any nature arising since that date other than 
those incurred in the ordinary course of business or contemplated by this 
Agreement.  All indebtedness of Contributor (including without limitation, 
indebtedness for borrowed money, guaranties and capital lease obligations) is 
described on EXHIBIT 2.19 attached hereto.

    2.20    INSURANCE POLICIES.  Contributor, each Partner and each licensed 
professional of Contributor carries property, liability, malpractice, 
workers' compensation and such other types of insurance as is customary in 
the industry. Valid and enforceable policies in such amounts are outstanding 
and duly in force and will remain duly in force through the Closing Date.  
All such policies are described in EXHIBIT 2.20 attached hereto and true and 
correct copies have been delivered to Pentegra.   Neither Partners nor 
Contributor have not received notice or other communication from the issuer 
of any such insurance policy cancelling or amending such policy or 
threatening to do so.  Neither Contributor, nor any Partner nor any licensed 
professional employee of Contributor has any outstanding claims, settlements 
or premiums owed against any insurance policy.

    2.21    EMPLOYEE BENEFIT PLANS.  Except as set forth on EXHIBIT 2.21 
attached hereto, Contributor has neither established, nor maintains, nor is 
obligated to make contributions to or under or otherwise participate in, (a) 
any bonus or other type of compensation or employment plan, program, 
agreement, policy, commitment, contract or arrangement (whether or not set 
forth in a written document); (b) any pension, profit-sharing, retirement or 
other plan, program or arrangement; or (c) any other employee benefit plan, 
fund or program, including, but not limited to, those described in SECTION 
3(3) of the Employee Retirement Income Security Act of 1974, as amended 
("ERISA").  All such plans listed on EXHIBIT 2.20 (individually "Contributor 
Plan," and collectively "Contributor Plans") have been operated and 
administered in all material respects in accordance with all applicable laws, 
rules and regulations, including without limitation, ERISA, the Internal 
Revenue Code of 1986, as amended, Title VII of the Civil Rights Act of 1964, 
as amended, the Equal Pay Act of 1967, as amended, the Age Discrimination in 
Employment Act of 1967, as amended, and the related rules and regulations 
adopted by those Federal agencies responsible for the administration of such 
laws.  No act or failure to act by Contributor has resulted in a "prohibited 
transaction" (as defined in ERISA) with respect to 

                                       7
<PAGE>

the Contributor Plans.  No "reportable event" (as defined in ERISA) has 
occurred with respect to any of the Contributor Plans. Contributor has not 
previously made, is not currently making, and is not obligated in any way to 
make, any contributions to any multiemployer plan within the meaning of the 
Multi-Employer Pension Plan Amendments Act of 1980.  With respect to each 
Contributor Plan, either (i) the value of plan assets (including commitments 
under insurance contracts) is at least equal to the value of plan liabilities 
or (ii) the value of plan liabilities in excess of plan assets is disclosed 
on the Balance Sheet, all as of the Closing Date.

    2.22    ADVERSE AGREEMENTS.  Contributor is not, and will not be as of 
the Closing Date, a party to any agreement or instrument or subject to any 
charter or other corporate restriction or any judgment, order, writ, 
injunction, decree, rule or regulation that materially and adversely affects 
the condition (financial or otherwise), operations, assets, liabilities, 
business or prospects of Contributor, the Business or the Assets.

    2.23    COMPLIANCE WITH LAWS IN GENERAL.  Contributor, Partners and 
Contributor's licensed professional employees, and the conduct of the 
Business and use of the Assets, have complied with all applicable laws, 
rules, regulations and licensing requirements, including, without limitation, 
the Federal Environmental Protection Act, the Occupational Safety and Health 
Act, the Americans with Disabilities Act and any environmental laws and 
medical waste laws, and there exist no violations by Contributor, any Partner 
or any licensed professional employee of Contributor of any Federal, state or 
local law or regulation.  Contributor and Partners have not received any 
notice of a violation of any Federal, state and local laws, regulations and 
ordinances relating to the operations of the Business and Assets and no 
notice of any pending inspection or violation of any such law, regulation or 
ordinance has been received by Contributor. 

    2.24    THIRD PARTY PAYORS.   Contributor, Partners and each licensed 
professional employee or independent contractor of Contributor has timely 
filed all claims or other reports required to be filed with respect to the 
purchase of services by third-party payors, and all such claims or reports 
are complete and accurate, and has no liability to any payor with respect 
thereto.  There are no pending appeals, overpayment determinations, 
adjustments, challenges, audit, litigation or notices of intent to open 
Medicare or Medicaid claim determinations or other reports required to be 
filed by Contributor, any Partner and each licensed professional employee of 
Contributor.  Neither Contributor, nor any Partner, nor any licensed 
professional employee of Contributor has been convicted of, or pled guilty or 
nolo contendere to, patient abuse or negligence, or any other Medicare or 
Medicaid program related offense and none has committed any offense which may 
serve as the basis for suspension or exclusion from the Medicare and Medicaid 
programs or any other third party payor program.  With respect to payors, 
Contributor, Partners and Contributor's licensed professional employees has 
not (a) knowingly and willfully making or causing to be made a false 
statement or representation of a material fact in any application for any 
benefit or payment; (b) knowingly and willfully making or causing to be made 
any false statement or representation of a material fact for use in 
determining rights to any benefit or payment; (c) failed to disclose 
knowledge of the occurrence of any event affecting the initial or continued 
right to any benefit or payment on its own behalf or on behalf of another, 
with the intent to fraudulently secure such benefit or payment; and (d) 
violated any applicable state anti-remuneration or self-referral statutes, 
rules or regulations. 

    2.25    NO UNTRUE REPRESENTATIONS.  No representation or warranty by 
Contributor or Partners in this Agreement, and no Exhibit or certificate 
issued or executed by, or information furnished by, officers or directors of 
Contributor or any Partner and furnished or to be furnished to Pentegra 
pursuant hereto, or in connection with the transactions contemplated hereby, 
contains or will contain any untrue statement of a material fact, or omits or 
will omit to state a material fact necessary to make the statements or facts 
contained therein not misleading.

    2.26    BANKING RELATIONS.  Set forth in EXHIBIT 2.26 is a complete and 
accurate list of all arrangements that Contributor has with any bank or other 
financial institution, indicating with respect to each relationship the type 
of arrangement maintained (such as checking account, borrowing arrangements, 
safe deposit box, etc.) and the person or persons authorized in respect 
thereof.

    2.27    OWNERSHIP INTERESTS OF INTERESTED PERSONS; COMPETITORS.  No 
officer, employee, director or stockholder of Contributor, or their 
respective spouses, children or affiliates, owns directly or indirectly, on 
an individual or joint basis, any interest in, has a compensation or other 
financial arrangement with, or serves as an officer or director 

                                       8
<PAGE>

of, any customer or supplier or competitor of Contributor or any organization 
that has a material contract or arrangement with Contributor. 

    2.28    PAYORS.  EXHIBIT 2.28 sets forth a true, complete and correct 
list of the names and addresses of each payor of Contributor's services which 
accounted for more than 10% of revenues of Contributor in the preceding 
fiscal year.  Contributor has good relations with all such payors and other 
material payors of Contributor and none of such payors has notified 
Contributor that it intends to discontinue its relationship with Contributor 
or to deny any claims submitted to such payor for payment. 

SECTION 3.  REPRESENTATIONS AND WARRANTIES OF PENTEGRA.

    Pentegra hereby represents and warrants to Contributor and Partners as 
follows:

    3.1     CORPORATE EXISTENCE: GOOD STANDING.  Pentegra is a corporation 
duly organized and existing and in good standing under the laws of the State 
of Delaware. 

    3.2     POWER AND AUTHORITY; CONSENTS.  Pentegra has corporate power to 
execute, deliver and perform this Agreement and all agreements and other 
documents executed and delivered by it pursuant to this Agreement or to be 
executed and delivered on the Closing Date, and has taken all actions 
required by law, its Certificate of Incorporation, its Bylaws or otherwise, 
to authorize the execution, delivery and performance of this Agreement and 
such related documents.   This Agreement and all agreements and documents 
executed and delivered in connection herewith have been, or will be as of the 
Closing Date, duly executed and delivered by Pentegra and constitute or will 
constitute the legal, valid and binding obligations of Pentegra, enforceable 
against Pentegra in accordance with their respective terms, except as may be 
limited by applicable bankruptcy, insolvency or similar laws affecting 
creditors' rights generally or the availability of equitable remedies.  The 
execution and delivery of this Agreement, and the agreements executed and 
delivered pursuant to this Agreement or to be executed and delivered on the 
Closing Date, do not, and, the consummation of the actions contemplated 
hereby will not, violate any provision of the Certificate of Incorporation or 
Bylaws of Pentegra or any provisions of, or result in the acceleration of, 
any obligation under any mortgage, lien, lease, agreement, rent, instrument, 
order, arbitration award, judgment or decree to which Pentegra is a party or 
by which Pentegra is bound, or violate any material restrictions of any kind 
to which Pentegra is subject, or result in any lien or encumbrance on any of 
Pentegra's assets. Other than as have been obtained or as would not have a 
material adverse effect, there are no consents of any person or entity 
required for the transaction contemplated hereby on behalf of Pentegra.

    3.3     PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS.  All building 
or other permits, certificates of occupancy, concessions, grants, franchises, 
licenses, certificates of need and other governmental authorizations and 
approvals required for the conduct of the business of Penegra or waivers 
thereof, have been duly obtained and are in full force and effect, except as 
would not have a material adverse effect upon Pentegra.  Other than as would 
not have a material adverse effect, there are no proceedings pending or, to 
the knowledge of Pentegra, threatened, which may result in the revocation, 
cancellation or suspension, or any adverse modification, of any such licenses 
or permits. 
    
    3.4     LEGAL PROCEEDINGS.  Other than as would not have a material 
adverse effect, neither Pentegra nor its business or assets is subject to any 
pending, nor does Pentegra have knowledge of any threatened, litigation, 
governmental investigation, condemnation or other proceeding against or 
relating to or affecting Pentegra, its business, assets or the transactions 
contemplated by this Agreement, and, to the knowledge of Pentegra, no basis 
for any such action exists, nor is there any legal impediment of which 
Pentegra has knowledge to the continued operation of its business or the use 
of its Assets in the ordinary course. 

    3.5     TAXES.  Pentegra has filed all tax returns (including tax reports 
and other statements) required to have been filed by it, and has paid all 
taxes (including any interest, penalty or additions thereto) required to have 
been paid by it, other than as would not have a material adverse effect.  
Pentegra has not received any notice that any tax deficiency or delinquency 
has been  or may be asserted against Pentegra.  There are no audits relating 
to taxes of Pentegra pending or in process or, to the knowledge of  Pentegra, 
threatened. Pentegra is not currently the beneficiary 

                                       9
<PAGE>

of any waiver of any statute of limitations in respect of taxes nor of any 
extension of time within which to file any tax return or to pay any tax 
assessment or deficiency. 

    3.6     COMMISSIONS AND FEES.  Pentegra has not incurred any obligation 
for any finder's, broker's or similar fees in connection with the 
transactions contemplated hereby.

    3.7     CAPITAL STOCK.  The issuance and delivery by Pentegra of shares 
of Pentegra Common Stock in connection with the acquisition contemplated 
hereby will be as of the Closing Date duly and validly authorized by all 
necessary corporate action on the part of Pentegra.  The Pentegra Common 
Stock to be issued in connection with the acquisition contemplated hereby, 
when issued in accordance with the terms of this Agreement, will be validly 
issued, fully paid and nonassessable.  

    3.8     NO UNTRUE REPRESENTATIONS.  No representation or warranty by 
Pentegra in this Agreement, and no Exhibit or certificate issued by officers 
or directors of Pentegra and furnished or to be furnished to Contributor  or 
any Partner pursuant hereto, or in connection with the transactions 
contemplated hereby, contains or will contain any untrue statement of a 
material fact, or omits or will omit to state a material fact necessary to 
make the statements or facts contained therein not misleading.

SECTION 4.  COVENANTS OF CONTRIBUTOR AND PARTNERS.

    Contributor and Partners, jointly and severally, agree that between the 
date hereof and the Closing Date:

    4.1     CONSUMMATION OF AGREEMENT; EXHIBITS.  Contributor and Partners 
shall use their best efforts to cause the consummation of the transactions 
contemplated hereby in accordance with their terms and conditions.  
Contributor and Partners agree to complete the Exhibits hereto to be provided 
by them in form and substance satisfactory to Pentegra.

    4.2     BUSINESS OPERATIONS.  Contributor and Partners shall operate the 
Business and use the Assets in the ordinary course.  Contributor and Partners 
shall not enter into any lease, contract, indebtedness, commitment, purchase 
or sale or acquire or dispose of any capital asset relating to the Business 
or the Assets except in the ordinary course of business.  Contributor and 
Partners shall use their best efforts to preserve the Business and Assets 
intact and shall not take any action that would have an adverse effect on the 
Business or Assets.  Contributor and Partners shall use their best efforts to 
preserve intact the relationships with payors, customers, suppliers, patients 
and others having significant business relations with Contributor.  
Contributor and Partners shall collect its receivables and pay its trade 
payables in the ordinary course of business.  Contributor and Partners shall 
not introduce any new method of management, operations or accounting. 

    4.3     ACCESS AND NOTICE.  Contributor and Partners shall permit 
Pentegra and its authorized representatives access to, and make available for 
inspection, all of the assets and business of Contributor, the Business and 
the Assets, including employees, customers and suppliers and permit Pentegra 
and its authorized representatives to inspect and make copies of all 
documents, records and information with respect to the business or assets of 
Contributor, the Business or the Assets as Pentegra or its representatives 
may request. Contributor and Partners shall promptly notify Pentegra in 
writing of (a) any notice or communication relating to a default or event 
that, with notice or lapse of time or both, could become a default, under any 
contract, commitment or obligation to which Contributor is a party or 
relating to the Business or the Assets, and (b) any adverse change in 
Contributor's or the Business' financial condition or the Assets.

    4.4     APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS.  Contributor 
and Partners shall use their best efforts to secure all necessary approvals 
and consents of third parties to the consummation of the transactions 
contemplated hereby, including consents described on EXHIBIT 2.4.  
Contributor and Partners shall use their best efforts to obtain all licenses, 
permits, approvals or other authorizations required under any law, rule, 
regulation, or otherwise to provide the services of Contributor contemplated 
by the Service Agreement and to conduct the intended business of Contributor 
and operate the Business and use the Assets.

                                       10
<PAGE>

    4.5     ACQUISITION PROPOSALS.  From the execution of this Agreement 
until the earlier of the Closing or the termination of this Agreement in 
accordance with the provisions hereof, Contributor and Partners shall not, 
and shall use its best efforts to cause Contributor's employees, agents and 
representatives not to, initiate, solicit or encourage, directly or 
indirectly, any inquiries or the making or implementation of any proposal or 
offer, including without limitation, any proposal or offer to any Partner, 
with respect to a merger, acquisition, consolidation or similar transaction 
involving, or the purchase of all or any significant portion of the assets or 
any equity securities of Contributor or engage in any negotiations 
concerning, or provide any confidential information or data to, or have any 
discussions with, any person relating to such proposal or offer, and 
Contributor and Partners will immediately cease any such activities, 
discussions or negotiations heretofore conducted with respect to any of the 
foregoing.  Contributor and Partners shall immediately notify Pentegra if any 
such inquiries or proposals are received.

    4.6     FUNDING OF ACCRUED EMPLOYEE BENEFITS.  Contributor hereby 
covenants and agrees that it will take whatever steps are necessary to pay or 
fund completely for any accrued benefits, where applicable, or vested accrued 
benefits for which Contributor or any entity might have any liability 
whatsoever arising from any insurance, pension plan,  employment tax or 
similar liability of Contributor to any employee or other person or entity 
(including, without limitation, any Contributor Plan and any liability under 
employment contracts with Contributor) allocable to services performed prior 
to the Closing Date. Contributor and Partners acknowledge that the purpose 
and intent of this covenant is to assure that Pentegra shall have no unfunded 
liability whatsoever at any time after the Closing Date with respect to any 
of Contributor's employees or similar persons or entities, including, without 
limitation, any Contributor Plan for the period prior to the Closing Date.

    4.7     EMPLOYEE MATTERS.  Contributor shall not, without the prior 
written approval of Pentegra, except as required by law, increase the cash 
compensation of any Partner (other than in the ordinary course of business) 
or other employee or an independent contractor of Contributor, adopt, amend 
or terminate any compensation plan, employment agreement, independent 
contractor agreement, employee policies and procedures or employee benefit 
plan, take any action that could deplete the assets of any employee benefit, 
or fail to pay any premium or contribution due or file any report with 
respect to any employee benefit plan, or take any other actions with respect 
to its employees or employee matters which might have an adverse effect upon 
Contributor, its business, assets or prospects.

    4.8     DISTRIBUTIONS AND REPURCHASES.  No distribution, payment or 
dividend of any kind will be declared or paid by Contributor, nor will any 
repurchase of any of Contributor's partnership interests be approved or 
effected.

    4.9     REQUIREMENTS TO EFFECT ACQUISITION.  Contributor and Partners 
shall use their best efforts to take, or cause to be taken, all actions 
necessary to effect the acquisition contemplated hereby under applicable law. 

    4.10    ACCOUNTING AND TAX MATTERS.  Contributor and Partners will not 
change in any material respect the tax or financial accounting methods or 
practices followed by Contributor (including any material change in any 
assumption underlying, or any method of calculating, any bad debt, 
contingency or other reserve), except as may be required by law or  generally 
accepted accounting principles.  Contributor and Partners will duly, 
accurately and timely (without regard to any extensions of time) file all 
returns, information statements and other documents relating to taxes of 
Contributor required to be filed by it, and pay all taxes required to be paid 
by it, on or before the Closing Date.

    4.11    WAIVER OF BULK TRANSFER COMPLIANCE.  Pentegra, Partners and 
Contributor hereby waive any compliance with the applicable state Bulk 
Transfers Act, if any.   Contributor and Partners covenant and agree that all 
of the creditors with respect to the Business and the Assets will be paid in 
full by Contributor prior to the Closing Date, except to extent that any 
liability to such creditors is assumed by Pentegra pursuant to this 
Agreement.  If required by Pentegra, Contributor and Partners  shall furnish 
Pentegra with proof of payment of all creditors with respect to the Business 
and the Assets. Notwithstanding the foregoing, Contributor and Partners may 
dispute the validity or amount of any such creditor's claim without being 
deemed to be in violation of this SECTION 4.11, provided that such dispute is 
in good faith and does not unreasonably delay the resolution of the claim and 
provided, further that Contributor and Partners agree to indemnify and bond 
Pentegra for such amounts as is satisfactory to Pentegra. 

    4.12    LEASE.  If Contributor leases any of its premises from any 
Partner or other affiliate of Contributor or any Partner of Contributor, 
Pentegra shall have entered into a building lease (the "Building Lease") with 
the owner of 

                                       11
<PAGE>

such premises on terms and conditions satisfactory to Pentegra, the terms and 
conditions of which shall include, without limitation, (i) a five year 
initial term plus three five-year renewal options, (ii) a lease rate equal to 
the fair market value lease rate, as agreed to by Pentegra, and (iii) such 
other provisions to be acceptable to Pentegra.

    4.13    HIRING OF EMPLOYEES.  Contributor and Partners shall cooperate 
with all requests made by Pentegra for the purpose of allowing Pentegra to 
hire those non-dentist employees of Contributor designated by Pentegra, such 
employment to be effective as of the Closing Date.  Notwithstanding the 
above, Contributor and Partners shall remain liable under any Contributor 
Plans for any claims incurred by any employees or their spouses or 
dependents, and for all compensation, bonuses, benefits and other such items 
and other liabilities related to Contributor's employees incurred by 
Contributor prior to the Closing Date.  

    4.14    EMPLOYEE BENEFIT PLANS.  Contributor agrees and acknowledges that 
all employees of Contributor hired by Pentegra pursuant to SECTION 4.13  
above, shall be treated as "leased employees" (as defined in Code Section 
414(n)) of Contributor and shall be treated as Clinic employees for purposes 
of eligibility and participation in Contributor Plans. 

    4.15    INSURANCE.  Contributor shall cause Pentegra and its affiliates 
to be named as an additional insured on its liability insurance programs, 
effective as of the Closing Date. 

SECTION 5.  COVENANTS OF PENTEGRA. 

    Pentegra agrees that between the date hereof and the Closing: 

    5.1     CONSUMMATION OF AGREEMENT; EXHIBITS.  Pentegra shall use its best 
efforts to cause the consummation of the transactions contemplated hereby in 
accordance with their terms and provisions.   Pentegra agrees to complete the 
Exhibits hereto to be provided by it.

    5.2     APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS.  Pentegra 
shall use its best efforts to secure all necessary approvals and consents of 
third parties to the consummation of the transactions contemplated hereby. 

SECTION 6.  COVENANTS OF PENTEGRA AND CONTRIBUTOR AND PARTNERS. 

    Pentegra, Partners  and Contributor agree as follows: 

    6.1     FILINGS; OTHER ACTIONS.   Pentegra, Contributor and Partners 
shall cooperate to promptly prepare and file with the Securities Exchange 
Commission ("SEC")  the Registration Statement on Form S-1 (or other 
appropriate Form) to be filed by Pentegra in connection with its Initial 
Public Offering (including the prospectus constituting a part thereof, the 
"Registration Statement"). Pentegra shall obtain all necessary state 
securities laws or "Blue Sky" permits and approvals required to carry out the 
transactions contemplated by this Agreement and the Contributor and Partners 
shall furnish all information concerning Contributor and Partners as may be 
reasonable requested in connection with any such action.

    Contributor and Partner represent and warrant that none of the 
information or documents supplied or to be supplied by it specifically for 
inclusion in the Registration Statement, by exhibit or otherwise, will, at 
the time the Registration Statement and each amendment or supplement thereto, 
if any, becomes effective under the Securities Act of 1933, contain any 
untrue statement of a material fact or omit to state any material fact 
required to be stated therein or necessary to make the statements therein, in 
light of the circumstances under which they were made, not misleading.  
Contributor and Partners shall be entitled to review the Registration 
Statement and each amendment thereto, if any, prior to the time each becomes 
effective under the Securities Act of 1933.

    Contributor and Partners shall furnish Pentegra will all information 
concerning themselves, their subsidiaries, if any, directors, officers and 
stockholders and such other matters as may be reasonable requested by 
Pentegra in

                                       12
<PAGE>

connection with the preparation of the Registration Statement and each
amendment or supplement thereto, or any other statement, filing, notice or
application made by or on behalf of each such party or any of its subsidiaries
to any governmental entity in connection with the transactions contemplated by
the Other Agreements or this Agreement.

SECTION 7.  PENTEGRA CONDITIONS PRECEDENT.

    The obligations of Pentegra hereunder are subject to the fulfillment at 
or prior to the Closing of each of the following conditions:

    7.1     REPRESENTATIONS AND WARRANTIES.  The representations and 
warranties of Contributor and Partners contained herein shall have been true 
and correct in all respects when initially made and shall be true and correct 
in all respects as of the Closing Date. 

    7.2     COVENANTS AND CONDITIONS.  Contributor and Partners shall have 
performed and complied with all covenants and conditions required by this 
Agreement to be performed and complied with by Contributor and Partners prior 
to the Closing Date.

    7.3     PROCEEDINGS.  No action, proceeding or order by any court or 
governmental body shall have been threatened orally or in writing, asserted, 
instituted or entered to restrain or prohibit the carrying out of the 
transactions contemplated hereby.

    7.4     NO MATERIAL ADVERSE CHANGE.  No material adverse change in the 
condition (financial or otherwise), operations, assets, liabilities, business 
or prospects of Contributor shall have occurred since the Balance Sheet Date.

    7.5     DUE DILIGENCE REVIEW.  By the Closing Date, Pentegra shall have 
completed a due diligence review of the business, operations and financial 
statements of Contributor, the Business and the Assets, the results of which 
shall be satisfactory to Pentegra in its sole discretion. 

    7.6     APPROVAL BY THE BOARD OF DIRECTORS.  This Agreement and the 
transactions contemplated hereby shall have been approved by the Board of 
Directors of Pentegra or a committee thereof. 

    7.7     SERVICE AGREEMENT; GUARANTY AGREEMENT.  Contributor and Pentegra 
shall have executed and delivered a Service Agreement (the "Service 
Agreement"), in substantially the form attached hereto as EXHIBIT 7.7, 
pursuant to which Pentegra will provide management services to the 
Contributor.  Each Partner shall have executed and delivered a Guaranty 
Agreement in substantially the form attached as EXHIBIT 4.10 of the Service 
Agreement pursuant to which Partner shall, among other things, guaranty the 
obligations of Contributor under the Service Agreement. 

    7.8     EMPLOYMENT ARRANGEMENTS.  Contributor shall have terminated, and 
caused each Partner of Contributor that has an existing employment agreement 
with Contributor to have terminated his or her employment agreement with 
Contributor and shall have executed an employment agreement ("Employment 
Agreement") with Contributor in form and substance attached hereto as EXHIBIT 
7.8 and otherwise satisfactory to Contributor and Pentegra. 

    7.9     CONSENTS AND APPROVALS.  Contributor and Partners shall have
obtained all necessary government and other third-party approvals and consents.

    7.10    CLOSING DELIVERIES.  Pentegra shall have received all documents, 
duly executed in form satisfactory to Pentegra and its counsel, referred to 
in SECTION 9.1.

    7.11    DEBT AND RECEIVABLES.  There shall be no indebtedness, 
receivables or payables between Contributor and its Partners or affiliates 
and Contributor shall not have any liabilities, including indebtedness, 
guaranties and capital leases, that are not set forth on EXHIBIT 2.19. 

    7.12    INSURANCE.  Contributor and Partners shall have named Pentegra as 
an additional insured on their liability insurance program in accordance with 
SECTION 4.15.

                                       13
<PAGE>

    7.13    NO CHANGE IN WORKING CAPITAL.  There shall have been no material 
change in the working capital of Contributor since the Balance Sheet Date. 

    7.14    SECURITIES APPROVAL.  The Registration Statement shall have 
become effective under the Securities Act and no stop order suspending the 
effectiveness of the Registration Statement shall have been issued and no 
proceedings for that purpose shall have been initiated or threatened by the 
SEC. At or prior to the date that the Registration Statement is declared 
effective by the SEC, Pentegra shall have received all state securities and 
"Blue Sky" permits necessary to consummate the transactions contemplated 
hereby.  The Pentegra Common Stock shall have been approved for listing on 
Nasdaq or other exchange selected by Pentegra, subject only to official 
notification of issuance.  

SECTION 8.  CONTRIBUTOR'S AND PARTNERS' CONDITIONS PRECEDENT.

    The obligations of Contributor and Partners hereunder are subject to 
fulfillment at or prior to the Closing of each of the following conditions:

    8.1     REPRESENTATIONS AND WARRANTIES.  The representations and 
warranties of Pentegra contained herein shall have been true and correct in 
all respects when initially made and shall be true and correct in all 
respects as of the Closing Date.

    8.2     COVENANTS AND CONDITIONS.  Pentegra shall have performed and 
complied with all covenants and conditions required by this Agreement to be 
performed and complied with by Pentegra prior to the Closing Date.

    8.3     PROCEEDINGS.  No action, proceeding or order by any court or 
governmental body shall have been threatened orally or in writing, asserted, 
instituted or entered to restrain or prohibit the carrying out of the 
transactions contemplated hereby.

    8.4     CLOSING DELIVERIES.  Contributor shall have received all 
documents, duly executed in form satisfactory to Contributor and its counsel, 
referred to in SECTION 9.2.

    8.5     SECURITIES APPROVAL.  The Registration Statement shall have 
become effective under the Securities Act and no stop order suspending the 
effectiveness of the Registration Statement shall have been issued and no 
proceedings for that purpose shall have been initiated or threatened by the 
SEC. At or prior to the date that the Registration Statement is declared 
effective by the SEC, Pentegra shall have received all state securities and 
"Blue Sky" permits necessary to consummate the transactions contemplated 
hereby.  The Pentegra Common Stock shall have been approved for listing on 
Nasdaq or other exchange selected by Pentegra, subject only to official 
notification of issuance.

SECTION 9.  CLOSING DELIVERIES.

    9.1     DELIVERIES OF CONTRIBUTOR AND PARTNERS. Within five business days 
after requested by Pentegra, Contributor and Partners shall deliver to 
Pentegra the following, all of which shall be in a form satisfactory to 
counsel to Pentegra and shall be held by Jackson Walker L.L.P. (counsel for 
Pentegra) in escrow pending Closing, pursuant to an escrow agreement or 
letter agreement in form and substance mutually acceptable to the parties 
hereto:

            (a)    an executed original Service Agreement and executed 
originals of all documents required by that agreement, including but not 
limited to the Guaranty Agreement and security agreement referred to therein;

            (b)    executed Employment Agreements; 
    
            (c)    a copy of the resolutions of the Partners authorizing the 
execution, delivery and performance of this Agreement, the Service Agreement, 
the Employment Agreements and all related documents and agreements each 
certified by the Secretary as being true and correct copies of the original 
thereof;

                                       14
<PAGE>

            (d)    a bill of sale conveying the Assets to Pentegra; 

            (e)    an assignment of each contract, agreement and lease being
assigned to and assumed by Pentegra;  

            (f)    certificates of the Partners and a duly authorized officer 
of Contributor dated as of the Closing Date, (i) as to the truth and 
correctness of the representations and warranties of Contributor and Partners 
contained herein; (ii) as to the performance of and compliance by Contributor 
and Partner with all covenants contained herein; and (iii) certifying that 
all conditions precedent of Contributor and Partners to the Closing have been 
satisfied;

            (g)    a certificate, dated within 30 days of the Closing Date, 
of the Secretary of the State of incorporation of Contributor and any state 
of required foreign qualification of Contributor establishing that 
Contributor is in existence and is in good standing to transact business in 
its state of incorporation; 

            (h)    an opinion of counsel to Contributor and Partner opining 
as to the execution and delivery of this Agreement and the other documents 
and agreements to be executed pursuant hereto, the good standing and 
authority of Contributor, the enforceability of this Agreement and the other 
agreements and documents to be executed in connection herewith, and other 
matters reasonably requested by Pentegra; 
    
            (i)    non-foreign affidavits executed by Contributor; 

            (j)    all authorizations, consents, approvals, permits and 
licenses referred to in SECTIONS 2.3 and 2.4; 

            (k)    an executed Registration Rights Agreement between Pentegra 
and Contributor, in substantially the form attached hereto as EXHIBIT 9.1(l) 
(the "Registration Rights Agreement"); and

            (l)    such other instruments and documents as reasonably 
requested by Pentegra to carry out and effect the purpose and intent of this 
Agreement.

    9.2     DELIVERIES OF PENTEGRA. On or before the Closing Date, Pentegra 
shall deliver to Contributor and Partner, the following, all of which shall 
be in a form satisfactory to counsel to Contributor and Partners and shall be 
held by Jackson Walker L.L.P. (counsel for Pentegra) in escrow pending 
Closing, pursuant to an escrow agreement or letter agreement in form and 
substance mutually acceptable to the parties hereto:

            (a)    the Acquisition Consideration;

            (b)    an executed Service Agreement;

            (c)    an assumption of each contract, agreement and lease being 
assigned to and assumed by Pentegra; 

            (d)    a copy of the resolutions of the Board of Directors of 
Pentegra (or a committee thereof) authorizing the execution, delivery and 
performance of this Agreement and all related documents and agreements each 
certified by the Secretary as being true and correct copies of the original 
thereof;

            (e)    certificates of the President of Pentegra, dated as of the 
Closing Date, (i) as to the truth and correctness of the representations and 
warranties of Pentegra contained herein; (ii) as to the performance of and 
compliance by Pentegra with all covenants contained herein; and (iii) 
certifying that all conditions precedent of Pentegra to the Closing have been 
satisfied; 

            (f)    a certificate of the Secretary of Pentegra certifying as 
to the incumbency of the directors and officers of Pentegra and as to the 
signatures of such directors and officers who have executed documents 
delivered at the Closing on behalf of Pentegra; 

                                       15
<PAGE>

            (g)    certificates, dated within 30 days of the Closing Date, of 
the Secretary of the State of Delaware establishing that Pentegra is in 
existence and are in good standing to transact business in the State of 
Delaware and the State of incorporation of Contributor; 

            (h)    an opinion of counsel to Pentegra opining as to the 
execution and delivery of this Agreement and the other documents and 
agreements to be executed pursuant hereto, the good standing and authority of 
Pentegra, the enforceability of this Agreement and the other agreements and 
documents to be executed in connection herewith, and other matters reasonably 
requested by Contributor; 

            (i)    the executed Registration Rights Agreement; and

            (j)    such other instruments and documents as reasonably 
requested by Contributor to carry out and effect the purpose and intent of 
this Agreement. 

SECTION 10. NATURE AND SURVIVAL OF REPRESENTATIONS AND WARRANTIES; 
INDEMNIFICATION.

    10.1    NATURE AND SURVIVAL.  All statements contained in this Agreement 
or in any Exhibit attached hereto, any agreement executed pursuant hereto, 
and any certificate executed and delivered by any party pursuant to the terms 
of this Agreement, shall constitute representations and warranties of 
Contributor and Partners, jointly and severally, or of Pentegra, as the case 
may be.  All such representations and warranties, and all representations and 
warranties expressly labeled as such in this Agreement shall survive the date 
of this Agreement and the Closing Date for a period of five (5) years 
following the Closing Date, except that (i) the representations and 
warranties with respect to environmental and medical waste laws and health 
care laws and matters shall survive for a period of fifteen (15) years and 
tax representations shall survive until one year after the expiration of the 
applicable statute of limitations.  Each party covenants with the other 
parties not to make any claim with respect to such representations and 
warranties, against any party after the date on which such survival period 
shall terminate.  No party shall be entitled to claim indemnity from any 
other party pursuant to SECTION 10.2 or 10.3 hereof, unless such party has 
timely given the notice required in SECTION 10.2, 10.3 or 10.4 hereof, as the 
case may be.  Each party hereby releases, acquits and discharges the other 
party from any and all claims and demands, actions and causes of action, 
damages, costs, expenses and rights of setoff with respect to which the 
notices required by SECTION 10.2, 10.3 or 10.4, as applicable, are not timely 
provided.

    10.2    INDEMNIFICATION BY PENTEGRA.  PENTEGRA (FOR PURPOSES OF THIS 
SECTION 10.2 AND, TO THE EXTENT APPLICABLE, SECTION 10.4, "INDEMNITOR"), 
SHALL INDEMNIFY AND HOLD CONTRIBUTOR AND ITS PartnerS, AGENTS AND EMPLOYEES 
(EACH OF THE FOREGOING, INCLUDING CONTRIBUTOR AND PartnerS, FOR PURPOSES OF 
THIS SECTION 10.2 AND, TO THE EXTENT APPLICABLE, SECTION 10.4, AN 
"INDEMNIFIED PERSON"), HARMLESS FROM AND AGAINST ANY AND ALL LIABILITIES, 
LOSSES, DAMAGES, ACTIONS, SUITS, COSTS, DEFICIENCIES AND EXPENSES (INCLUDING, 
BUT NOT LIMITED TO, REASONABLE FEES AND DISBURSEMENTS OF COUNSEL THROUGH 
APPEAL) ARISING FROM OR BY REASON OF OR RESULTING FROM:

    (A)      ANY BREACH BY INDEMNITOR OF ANY REPRESENTATION, WARRANTY, 
AGREEMENT OR COVENANT CONTAINED IN THIS AGREEMENT (INCLUDING THE EXHIBITS 
HERETO) AND EACH DOCUMENT, CERTIFICATE OR OTHER INSTRUMENT FURNISHED OR TO BE 
FURNISHED BY INDEMNITOR HEREUNDER, AND 

    (B)     AFTER THE CLOSING DATE, INDEMNITOR'S OWNERSHIP OF THE ASSETS, AND

    (C)     ANY LIABILITY UNDER THE SECURITIES ACT, THE EXCHANGE ACT OR ANY 
OTHER FEDERAL OR STATE "BLUE SKY" OR SECURITIES LAWS OR REGULATION, AT COMMON 
LAW OR OTHERWISE, ARISING OUT OF OR BASED UPON ANY UNTRUE STATEMENT OR 
ALLEGED UNTRUE STATEMENT OF A MATERIAL FACT RELATING TO PENTEGRA CONTAINED IN 
ANY PRELIMINARY PROSPECTUS, THE REGISTRATION STATEMENT OR ANY PROSPECTUS 
FORMING A PART THEREOF, OR ANY AMENDMENT THEREOF OR SUPPLEMENT THERETO, 
ARISING OUT OF OR BASED UPON ANY 


                                       16
<PAGE>

OMISSION OR ALLEGED OMISSION TO STATE THEREIN A MATERIAL FACT RELATING TO 
PENTEGRA REQUIRED TO BE STATED THEREIN OR NECESSARY TO MAKE THE STATEMENTS 
THEREIN NOT MISLEADING.
 
IN CONNECTION WITH INDEMNITOR'S OBLIGATION TO INDEMNIFY FOR EXPENSES, INDEMNITOR
SHALL REIMBURSE EACH INDEMNIFIED PERSON FOR ALL SUCH EXPENSES AS THEY ARE
INCURRED BY SUCH INDEMNIFIED PERSON, PROVIDED THAT SUCH INDEMNIFIED PERSON
AGREES IN WRITING TO REFUND ALL SUCH REIMBURSED EXPENSES IF AND TO THE EXTENT
THAT IT IS FINALLY JUDICIALLY DETERMINED THAT SUCH INDEMNIFIED PERSON IS NOT
ENTITLED TO INDEMNIFICATION HEREUNDER.

    10.3    INDEMNIFICATION BY CONTRIBUTOR AND PARTNERS.  CONTRIBUTOR AND 
PARTNERS (FOR PURPOSES OF THIS SECTION 10.3 AND, TO THE EXTENT APPLICABLE, 
SECTION 10.4, "INDEMNITOR"), JOINTLY AND SEVERALLY, SHALL INDEMNIFY AND HOLD 
PENTEGRA AND ITS AFFILIATES, OFFICERS, DIRECTORS, PARTNERS, AGENTS AND 
EMPLOYEES (EACH OF THE FOREGOING, INCLUDING PENTEGRA, FOR PURPOSES OF THIS 
SECTION 10.3 AND, TO THE EXTENT APPLICABLE, SECTION 10.4, AN "INDEMNIFIED 
PERSON") HARMLESS FROM AND AGAINST ANY AND ALL LIABILITIES, LOSSES, CLAIMS, 
DAMAGES, ACTIONS, SUITS, COSTS, DEFICIENCIES AND EXPENSES (INCLUDING, BUT NOT 
LIMITED TO, REASONABLE FEES AND DISBURSEMENTS OF COUNSEL THROUGH APPEAL) 
ARISING FROM OR BY REASON OF OR RESULTING FROM OR WITH RESPECT TO:

    (A)      ANY BREACH BY INDEMNITOR OF ANY REPRESENTATION, WARRANTY,
AGREEMENT OR COVENANT CONTAINED IN THIS AGREEMENT (INCLUDING THE EXHIBITS
HERETO) AND EACH DOCUMENT, CERTIFICATE, OR OTHER INSTRUMENT FURNISHED OR TO BE
FURNISHED BY INDEMNITOR HEREUNDER, 

    (B)     PRIOR TO AND AFTER THE CLOSING DATE, THE INDEMNITOR'S MANAGEMENT 
AND CONDUCT OF THE BUSINESS AND OWNERSHIP OR OPERATION OF THE ASSETS, 

    (C)     ANY ALLEGED ACT OR NEGLIGENCE OF INDEMNITOR OR ITS EMPLOYEES, 
AGENTS AND INDEPENDENT CONTRACTORS IN OR ABOUT CONTRIBUTOR'S BUSINESS WHETHER 
ON OR AFTER THE CLOSING DATE, 

    (D)     ANY VIOLATION BY CONTRIBUTOR OR ITS PARTNERS OR THEIR 
CONSULTANTS, OFFICERS, DIRECTORS, EMPLOYEES, AGENTS AND AFFILIATES OF STATE 
OR FEDERAL LAWS GOVERNING HEALTHCARE FRAUD AND ABUSE, OR ANY OVERPAYMENT OR 
OBLIGATION ARISING OUT OF OR RESULTING FROM ACTIONS OF THE CONTRIBUTOR OR 
PARTNERS RELATING TO CLAIMS SUBMITTED TO ANY THIRD PARTY PAYOR, WHETHER ON OR 
AFTER THE CLOSING DATE, 

    (E)     TAXES OF CONTRIBUTOR OR ANY PARTNER OR ANY OTHER PERSON OR ENTITY 
RELATED TO OR AFFILIATED WITH THE CONTRIBUTOR OR ANY PARTNER ARISING FROM OR 
AS A RESULT OF THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT, 
    
    (F)     ANY LIABILITY OF CONTRIBUTOR OR THE PARTNERS FOR COSTS AND 
EXPENSES (INCLUDING, WITHOUT LIMITATION, ATTORNEYS' FEES) INCURRED IN 
CONNECTION WITH THE NEGOTIATION, PREPARATION OF CLOSING OF THE TRANSACTIONS 
CONTEMPLATED BY THIS AGREEMENT OR THE OTHER DOCUMENTS TO BE EXECUTED IN 
CONNECTION HEREWITH,

    (G)     ANY ACCRUED UNFUNDED RETIREMENT OR PENSION PLAN LIABILITIES, 

    (H)     ANY LIABILITIES THAT ARE  NOT SET FORTH ON EXHIBIT 1.3(b), OR

    (I)     ANY LIABILITY UNDER THE SECURITIES ACT, THE EXCHANGE ACT OR ANY 
OTHER FEDERAL OR STATE "BLUE SKY" OR SECURITIES LAWS OR REGULATION, AT COMMON 
LAW OR

                                       17
<PAGE>

OTHERWISE, ARISING OUT OF OR BASED UPON ANY UNTRUE STATEMENT OR ALLEGED 
UNTRUE STATEMENT OF A MATERIAL FACT RELATING TO CONTRIBUTOR OR ITS PARTNERS 
AND PROVIDED TO PENTEGRA, OR ITS COUNSEL BY THE CONTRIBUTOR OR ITS PARTNERS 
SPECIFICALLY FOR INCLUSION IN ANY PRELIMINARY PROSPECTUS, THE REGISTRATION 
STATEMENT OR ANY PROSPECTUS FORMING A PART THEREOF, OR ANY AMENDMENT THEREOF 
OR SUPPLEMENT THERETO, ARISING OUT OF OR BASED UPON ANY OMISSION OR ALLEGED 
OMISSION TO STATE THEREIN A MATERIAL FACT RELATING TO CONTRIBUTOR OR ITS 
PARTNERS REQUIRED TO BE STATED THEREIN OR NECESSARY TO MAKE THE STATEMENTS 
THEREIN NOT MISLEADING.
   
IN CONNECTION WITH INDEMNITOR'S OBLIGATION TO INDEMNIFY FOR EXPENSES, 
INDEMNITOR SHALL REIMBURSE EACH INDEMNIFIED PERSON FOR ALL SUCH EXPENSES AS 
THEY ARE INCURRED BY SUCH INDEMNIFIED PERSON, PROVIDED THAT SUCH INDEMNIFIED 
PERSON AGREES IN WRITING TO REFUND ALL SUCH REIMBURSED EXPENSES IF AND TO THE 
EXTENT THAT IT IS FINALLY JUDICIALLY DETERMINED THAT SUCH INDEMNIFIED PERSON 
IS NOT ENTITLED TO INDEMNIFICATION HEREUNDER.

    10.4    INDEMNIFICATION PROCEDURE.  Within sixty (60) days after 
Indemnified Person receives written notice of the commencement of any action 
or other proceeding in respect of which indemnification or reimbursement may 
be sought hereunder, or within such lesser time as may be provided by law for 
the defense of such action or proceeding, such Indemnified Person shall 
notify Indemnitor thereof.  If any such action or other proceeding shall be 
brought against any Indemnified Person, Indemnitor shall, upon written notice 
given within a reasonable time following receipt by Indemnitor of such notice 
from Indemnified Person, be entitled to assume the defense of such action or 
proceeding with counsel chosen by Indemnitor and reasonably satisfactory to 
Indemnified Person; provided, however, that any Indemnified Person may at its 
own expense retain separate counsel to participate in such defense. 
Notwithstanding the foregoing, Indemnified Person shall have the right to 
employ separate counsel at Indemnitor's expense and to control its own 
defense of such action or proceeding if, in the reasonable opinion of counsel 
to such Indemnified Person, (a) there are or may be legal defenses available 
to such Indemnified Person or to other Indemnified Persons that are different 
from or additional to those available to Indemnitor and which could not be 
adequately advanced by counsel chosen by Indemnitor, or (b) a conflict or 
potential conflict exists between Indemnitor and such Indemnified Person that 
would make such separate representation advisable; provided, however, that in 
no event shall Indemnitor be required to pay fees and expenses hereunder for 
more than one firm of attorneys of Indemnified Person in any jurisdiction in 
any one action or proceeding or group of related actions or proceedings.  
Indemnitor shall not, without the prior written consent of any Indemnified 
Person, settle or compromise or consent to the entry of any judgment in any 
pending or threatened claim, action or proceeding to which such Indemnified 
Person is a party unless such settlement, compromise or consent includes an 
unconditional release of such Indemnified Person from all liability arising 
or potentially arising from or by reason of such claim, action or proceeding.

    10.5    RIGHT OF SETOFF.  In the event of any breach of warranty, 
representation, covenant or agreement by Contributor or any Partner giving 
rise to indemnification under SECTION 10.3 or SECTION 10.4 hereof, Pentegra 
shall be entitled to offset the amount of damages incurred by it as a result 
of such breach of warranty, representation, covenant or agreement against any 
amounts payable by Pentegra, including the amounts payable under the Service 
Agreement.  

SECTION 11. TERMINATION.  This Agreement may be terminated:

    (a)     at any time by mutual agreement of all parties;

    (b)     at any time by Pentegra if any representation or warranty of 
Contributor or any Partner contained in this Agreement or in any certificate 
or other document executed and delivered by Contributor or any Partner 
pursuant to this Agreement is or becomes untrue or breached in any material 
respect or if Contributor or any Partner fails to comply in any material 
respect with any covenant or agreement contained herein, and any such 
misrepresentation, noncompliance or breach is not cured, waived or eliminated 
within twenty (20) days after receipt of written notice thereof;

                                       18
<PAGE>

                                              
    (c)     at any time by Contributor or any Partner if any representation 
or warranty of Pentegra contained in this Agreement or in any certificate or 
other document executed and delivered by Pentegra pursuant to this Agreement 
is or becomes untrue or breached in any material respect or if Pentegra fails 
to comply in any material respect with any covenant or agreement contained 
herein and such misrepresentation, noncompliance or breach is not cured, 
waived or eliminated within twenty (20) days after receipt of written notice 
thereof;

    (d)     by Pentegra, Partners or Contributor if the transaction 
contemplated hereby shall not have been consummated by December 31, 1997; or 

    (e)     by Pentegra at any time prior to the Closing Date if Pentegra 
determines in its sole discretion as the result of its legal, financial and 
operational due diligence with respect to Contributor, that such termination 
is desirable and in the best interests of Pentegra. 

SECTION 12. TRANSFER REPRESENTATIONS.  

    12.1    TRANSFER RESTRICTIONS. For a period of one year from the Closing 
Date, Contributor shall not voluntarily (a) sell, assign, exchange, transfer, 
encumber, pledge, distribute, appoint or otherwise dispose of (i) any shares 
of Pentegra Common Stock received by such party hereunder, (ii) any interest 
(including without limitation, an option to buy or sell) in any shares of 
Pentegra Common Stock, in whole or in part, and no such attempted transfer 
shall be treated as effective for any purpose or (b) engage in any 
transaction, whether or not with respect to any shares of Pentegra Common 
Stock or any interest therein, the intent or effect of which is to reduce the 
risk of owning shares of Pentegra Common Stock.  The certificates evidencing 
the Pentegra Common Stock delivered to Contributor pursuant to the terms 
hereof will bear a legend substantially in the form set forth below and 
containing such other information as Pentegra may deem necessary or 
appropriate:

    The shares represented by this certificate may not be voluntarily sold,
    assigned, exchanged, transferred, encumbered, pledged, distributed,
    appointed or otherwise disposed of, and the issuer shall not be required to
    give effect to any attempted voluntary sale, assignment, exchange,
    transfer, encumbrance, pledge, distribution, appointment or other
    disposition prior to _________ [date that is one year from the Closing
    Date].  Upon the written request of the holder of this certificate, the
    issuer agrees to remove this restrictive legend (and any stop order placed
    with the transfer agent) after the date specified above.

    12.2    INVESTMENTS; COMPLIANCE WITH LAW.  Contributor and Partners 
acknowledge that the shares of Pentegra Common Stock to be delivered to 
Contributor pursuant to this Agreement have not been and will not be 
registered under the Securities Act of 1933 and may not be resold without 
compliance with the Securities Act of 1933.  The Pentegra Common Stock to be 
acquired by Contributor pursuant to this Agreement is being acquired solely 
for its own account, for investment purposes only and with no present 
intention of distributing, selling or otherwise disposing of it in connection 
with a distribution.  Contributor covenants, warrants and represents that 
none of the shares of Pentegra Common Stock issued to it will be offered, 
sold, assigned, pledged, hypothecated, transferred or otherwise disposed of 
except after full compliance with all of the applicable provisions of the 
Securities Act, as amended, and the rules and regulations of the Securities 
Exchange Commission and applicable state securities laws and regulations.  
All certificates evidencing shares of Pentegra Common Stock shall bear the 
following legend in addition to the legend referenced in SECTION 12.1. 

    The shares represented hereby have not been registered under the Securities
    Act of 1933 (the "Act") and may only be sold or otherwise transferred if
    the holder hereof complies with the Act and applicable securities laws.

    In addition, certificates evidencing shares of Pentegra Common Stock shall
bear any legend required by the securities or blue sky laws of any state where
Contributor resides.

    12.3    ECONOMIC RISK; SOPHISTICATION.  Contributor and Partners are able
to bear the economic risk of an investment in Pentegra Common Stock  acquired
pursuant to this Agreement and can afford to sustain a total loss of such
investment and have such knowledge and experience in financial and business
matters that they are capable of 

                                       19
<PAGE>


evaluating the merits and risks of the proposed investment and therefore have 
the capacity to protect their own interests in connection with the 
acquisition of the Pentegra Common Stock.  Contributor, Partners and their 
representatives have had an adequate opportunity to ask questions and receive 
answers from the officers of Pentegra concerning any and all matters relating 
to the background and experience of the officers and directors of Pentegra, 
the plans for the operations of the business of Pentegra, and any plans for 
additional acquisitions and the like.  Contributor, Partners and their 
representatives have asked any and all questions in the nature described in 
the preceding sentence and all questions have been answered to their 
satisfaction.   Contractor and Partners are "accredited investors" as defined 
in Regulation D of the Securities Act of 1933, as amended.

SECTION 13. NONDISCLOSURE OF CONFIDENTIAL INFORMATION.  Contributor and 
Partners recognize and acknowledge that they had in the past, currently have, 
and in the future may possibly have, access to certain confidential 
information of Pentegra that is valuable, special and unique assets of 
Pentegra's businesses.  Contributor and Partners agree that it will not 
disclose such confidential information to any person, firm, corporation, 
association or other entity for any purpose or reason whatsoever, unless (i) 
such information becomes available to or known by the public generally 
through no fault of Contributor or Partners, (ii) disclosure is required by 
law or the order of any governmental authority under color of law, provided, 
that prior to disclosing any information pursuant to this clause (ii), 
Contributor and Partners shall, if possible, give prior written notice 
thereof to the other parties hereto, and provide such other parties hereto 
with the opportunity to contest such disclosure, (iii) Contributor and 
Partners reasonably believe that such disclosure is required in connection 
with the defense of a lawsuit against the disclosing party, or (iv) 
Contributor and Partners are the sole and exclusive owner of such 
confidential information as a result of the transactions contemplated 
hereunder or otherwise. In the event of a breach or threatened breach by 
Contributor or Partners of the provisions of this SECTION 13, Pentegra shall 
be entitled to an injunction restraining Contributor and Partners from 
disclosing, in whole or in part, such confidential information.  Nothing 
herein shall be construed as prohibiting Pentegra from pursuing any other 
available remedy for such breach or threatened breach, including the recovery 
of damages. The obligations of the parties under this SECTION 13 shall 
survive the termination of this Agreement.

SECTION 14. MISCELLANEOUS.

    14.1    TAX COVENANT.  The parties intend that the transactions 
contemplated by this Agreement, together with the transactions contemplated 
by the Other Agreement and the Initial Public Offering, will qualify as an 
exchange meeting the requirements of Section 351 of the Code.  The tax 
returns (and schedules thereto) of Partners, Contributor and Pentegra  shall 
be filed in a manner consistent with such intention and Contributor and 
Pentegra shall each provide the other with such tax information, reports, 
returns or schedules as may be reasonably required to assist the other in so 
reporting the transactions contemplated hereby. 

    14.2    NOTICES.  Any communications required or desired to be given 
hereunder shall be deemed to have been properly given if sent by hand 
delivery, or by facsimile AND overnight courier, to the parties hereto at the 
following addresses, or at such other address as either party may advise the 
other in writing from time to time:

    If to Pentegra:

    Pentegra Dental Group, Inc.
    2999 N. 44th Street, Suite 650
    Phoenix, Arizona 85018
    Attn: President 
    Facsimile: (602) 952-0554 


                                         20
<PAGE>

    with a copy of each notice directed to Pentegra to:

    James S. Ryan, III, Esquire
    Jackson Walker L.L.P.
    901 Main Street
    Dallas, Texas  75202
    Facsimile:  (214) 953-5822

    If to Contributor or Partners: 

    To address set forth on EXHIBIT 14.2
    
            with a copy to:

    Person and address set forth on EXHIBIT 14.2


All such communications shall be deemed to have been delivered on the date of 
hand delivery or on the next business day following the deposit of such 
communications, properly addressed and postage prepaid with the overnight 
courier.

    14.3    FURTHER ASSURANCES.  Each party hereby agrees to perform any 
further acts and to execute and deliver any documents which may be reasonably 
necessary to carry out the provisions of this Agreement.

    14.4    EACH PARTY TO BEAR COSTS.  Subject to SECTION 14.12, each of the 
parties to this Agreement shall pay all of the costs and expenses incurred by 
such party in connection with the transactions contemplated by this 
Agreement, whether or not such transactions are consummated.  Without 
limiting the generality of the foregoing and whether or not such liabilities 
may be deemed to have been incurred in the ordinary course of business, 
Pentegra shall not be liable to or required to pay, either directly or 
indirectly, any fees and expenses of legal counsel, accountants, auditors or 
other persons or entities retained by Contributor or any Partner for services 
rendered in connection with negotiating and closing the transactions 
contemplated by this Agreement or the documents to be executed in connection 
herewith, whether or not such costs or expenses are incurred before or after 
the Closing Date. 

    14.5    PUBLIC DISCLOSURES.  Each party shall keep this Agreement and its 
terms confidential, and shall make no press release or public disclosure, 
either written or oral, regarding the transactions contemplated by this 
Agreement without the prior written consent of the other party, provided that 
the foregoing shall not prohibit any disclosure (a) by press release, filing 
or otherwise that Pentegra has determined in good faith judgment to be 
required by Federal  securities laws or the rules of the National Association 
of Securities Dealers, (b) to attorneys, accountants, investment bankers or 
other agents of the parties assisting the parties in connection with the 
transactions contemplated by this Agreement, and (c) by Pentegra in 
connection with the conduct of its Initial Public Offering and conducting an 
examination of the operations and assets of Contributor.

    14.6    GOVERNING LAW.  THIS AGREEMENT SHALL BE INTERPRETED, CONSTRUED 
AND ENFORCED IN ACCORDANCE WITH THE LAWS OF THE STATE OF INCORPORATION OF 
CONTRIBUTOR AND APPLIED WITHOUT GIVING EFFECT TO ANY CONFLICTS OF LAWS 
PRINCIPLES.

    14.7    CAPTIONS. The captions or headings in this Agreement are made for 
convenience and general reference only and shall not be construed to 
describe, define or limit the scope or intent of the provisions of this 
Agreement.

    14.8    INTEGRATION OF EXHIBITS.  All Exhibits attached to this Agreement 
are integral parts of this Agreement as if fully set forth herein, and all 
statements appearing therein shall be deemed disclosed for all purposes and 
not only in connection with the specific representation in which they are 
explicitly referenced.

    14.9    ENTIRE AGREEMENT/AMENDMENT.   THIS INSTRUMENT, INCLUDING ALL
EXHIBITS ATTACHED HERETO, CONTAINS THE ENTIRE AGREEMENT OF THE PARTIES AND
SUPERSEDES ANY

                                       21
<PAGE>


AND ALL PRIOR OR CONTEMPORANEOUS AGREEMENTS BETWEEN THE PARTIES, WRITTEN OR 
ORAL, WITH RESPECT TO THE TRANSACTIONS CONTEMPLATED HEREBY.

    14.10   COUNTERPARTS.  This Agreement may be executed in several 
counterparts, each of which when so executed shall be deemed to be an 
original, and such counterparts shall together constitute and be one and the 
same instrument

    14.11   BINDING EFFECT/ASSIGNMENT.  This Agreement shall be binding on, 
and shall inure to the benefit of, the parties hereto, and their respective 
successors and assigns, and no other person shall acquire or have any right 
under or by virtue of this Agreement.  No party may assign any right or 
obligation hereunder without the prior written consent of the other parties; 
provided, however, that Pentegra may assign its rights and delegate its 
obligations hereunder to any entity that is an affiliate of Pentegra.  For 
purposes of this Agreement an "affiliate" of Pentegra shall include any 
entity that, through one or more intermediaries is, controlled, controlled by 
or under common control with, Pentegra.  Upon any such assignment prior to 
the Closing, all references herein to Pentegra (including those to Pentegra 
Common Stock) shall be deemed to include references to the assignee and the 
assignee's common stock.  Notwithstanding any such assignment, Pentegra shall 
not, absent a written release from Contributor, be relieved from its 
obligations to Contributor under this Agreement. 

    14.12   COSTS OF ENFORCEMENT. In the event that Pentegra, on the one 
hand, or Contributor, on the other hand, file suit in any court against any 
other party to enforce the terms of this Agreement against the other party or 
to obtain performance by it hereunder, the prevailing party will be entitled 
to recover all reasonable costs, including reasonable attorneys' fees, from 
the other party as part of any judgment in such suit. The term "prevailing 
party" shall mean the party in whose favor final judgment after appeal (if 
any) is rendered with respect to the claims asserted in the Complaint.  
"Reasonable attorneys' fees" are those reasonable attorneys' fees actually 
incurred in obtaining a judgment in favor of the prevailing party.

    14.13   PRORATIONS.  Contributor agrees to reimburse Pentegra at Closing 
a pro rata portion of all taxes levied upon the Assets for the calendar year 
in which the Closing occurs.  Such taxes shall be estimated, apportioned and 
pro-rated among Contributor and Pentegra as of the Closing Date, and the 
prorated amount due Pentegra shall be credited to the cash portion of the 
Purchase Consideration.  Upon payment by Pentegra of such taxes actually 
assessed and paid on the Assets, Pentegra shall calculate the apportionment 
of such taxes and shall pay Contributor or may demand from Contributor, and 
Contributor agrees to pay, the amount necessary to correct the estimate and 
proration made at Closing.

    14.14   AMENDMENTS; WAIVERS. This Agreement may be amended, modified or 
supplemented only by an instrument in writing executed by all the parties 
hereto.  Any waiver of the terms and conditions hereof must be in writing, 
and signed by the parties hereto.  The waiver of any of the terms and 
conditions of this Agreement shall not be construed as a waiver of any other 
terms and conditions hereof.

    14.15   ARBITRATION.   Upon the request of either Pentegra or the 
Contributors or Partners (hereinafter referred to as a "Party"), whether made 
before or after the institution of any legal proceeding, any dispute among 
the parties hereto  in any way arising out of, related to, or in connection 
with this Agreement (hereinafter a "Dispute"), shall be resolved by binding 
arbitration in accordance with the terms of this Section (hereinafter the 
"Arbitration Program").

    All Disputes between the Parties shall be resolved by binding arbitration 
administered by the American Arbitration Association (the "AAA") in 
accordance with the terms of this Arbitration Program, the Commercial 
Arbitration Rules of the AAA.  In the event of any inconsistency between this 
Arbitration Program and those rules or statutes, then the terms of this 
Arbitration Program shall control.

    The parties hereto agree to adhere to all warranties and covenants (as 
described herein) until such time as the arbitration process has been 
completed and the arbitrators have determined each party's post-arbitration 
obligations and responsibilities as it relates to such warranties and 
covenants.  No provision of, nor the exercise of any rights under, this 
Arbitration Program shall limit the right of any Party at any time to seek or 
use ancillary or preliminary 

                                       22
<PAGE>


judicial or non-judicial self help remedies for the purposes of obtaining, 
perfecting, preserving, or foreclosing upon any personal property in which 
there has been granted a security interest or lien by a Party in the 
Documents. In Disputes involving indebtedness or other monetary obligations, 
each Party agrees that the other Party may proceed against all liable 
persons, jointly and severally against one or more of them, without impairing 
rights against other liable persons.  Nor shall a Party be required to join 
the principal obligor or any other liable persons (e.g., sureties or 
guarantors) in any proceeding against a particular person.  A Party may 
release or settle with one or more liable persons as the Party deems fit 
without releasing or impairing rights to proceed against any persons not so 
released.  All statutes of limitation that would otherwise be applicable 
shall apply to any arbitration proceeding.

    The party seeking arbitration shall notify the other Party, in writing, 
of that Party's desire to arbitrate a dispute; and each Party shall, within 
twenty (20) days from the date such notification is received, select an 
arbitrator, and those two arbitrators shall select a third arbitrator within 
ten (10) days thereafter.  The issues or claims in dispute shall be committed 
to writing, separately stated and numbered, and each party's proposed answers 
or contentions shall be signed below the questions. Failure by a party to 
select an arbitrator within the prescribed time period shall serve as that 
Party's acquiescence and acceptance of the other party's selection of 
arbitrator. The arbitrators shall resolve all Disputes in accordance with the 
applicable substantive law.  Any Dispute shall be decided by a majority vote 
of three arbitrators, unless the claim or amount in controversy does not 
exceed $100,000.00, in which case a single arbitrator (who shall have 
authority to render a maximum award of $100,000.00, including all damages of 
any kind, costs and fees) may decide the Dispute. The arbitrators may grant 
any remedy or relief that the arbitrators deem just and equitable and within 
the scope of this Arbitration Program.  The arbitrators may also grant such 
ancillary relief as is necessary to make effective the award.  In all 
arbitration proceedings the arbitrators shall make specific and written 
findings of fact and conclusions of law.  In all arbitration proceedings in 
which the amount in controversy exceeds $100,000.00, in the aggregate, the 
Parties shall have in addition to the statutory right to seek vacation or 
modification of any award pursuant to applicable law, the right to seek 
vacation or modification of any award that is based in whole, or in part, on 
an incorrect or erroneous ruling of law by appeal to an appropriate court 
having jurisdiction; provided, however, that any such application for 
vacation or modification of an award based on an incorrect ruling of law must 
be filed in a court having jurisdiction over the Dispute within 15 days from 
the date the award in rendered.  The arbitrators' findings of fact shall be 
binding on all Parties and shall not be subject to further review except as 
otherwise allowed by applicable law.

    To the maximum extent practicable, an arbitration proceeding hereunder 
shall be concluded within 180 days of the filing of the Dispute with AAA. 
Arbitration proceedings hereunder shall be conducted where agreed to in 
writing by the Parties or, in the absence of such agreement in Phoeniz, 
Arizona or the headquarters of Pentegra if other than Phoeniz, Arizona.  The 
provisions of this Arbitration Program shall survive any termination, 
amendment, or expiration of the Documents, unless the Parties otherwise 
expressly agree in writing making specific reference to this Arbitration 
Program.  To the extent permitted by applicable law, the arbitrator shall 
have the power to award recovery of all costs and fees (including attorney's 
fees, administrative fees, and arbitrators' fees) to the prevailing Party.  
This Arbitration Program may be amended, changed, or modified only by a 
writing which specifically refers to this Arbitration Program and which is 
signed by all the Parties.  If any term, covenant, condition or provision of 
the Arbitration Program is found to be unlawful or invalid or unenforceable, 
such illegality or invalidity or unenforceable shall not affect the legality, 
validity or enforceability of the remaining parts of this Arbitration 
Program, and all such remaining parts hereof shall be valid and enforceable 
and have full force and effect as if the illegal, invalid or unenforceable 
part had not been included.  Each Party agrees to keep all Disputes and 
arbitration proceedings strictly confidential, except for disclosures of 
information required in the ordinary course of business of the Parties or by 
applicable law or regulation.

    14.16   SEVERABILITY.  If any provision of this Agreement shall be found to
be illegal, invalid or unenforceable under present or future laws, such
provision shall be fully severable and this Agreement shall be construed and
enforced as if such provision never comprised a part hereof; and the remaining
provisions hereof shall remain in full force and effect.  In lieu of such
provision, there shall be added automatically as part of this Agreement, a
provision as similar in its terms to such provision as may be possible and be
legal, valid and enforceable.

                                    [End of Page]


                                       23
<PAGE>


    IN WITNESS WHEREOF, the parties have executed this Agreement as of the day
and year first above written.


                                  

                                  -----------------------------------------


                                  By:
                                     --------------------------------------
                                  Its:
                                      -------------------------------------



                                  PENTEGRA DENTAL GROUP, INC. 



                                  By:
                                     --------------------------------------
                                  It:
                                     --------------------------------------





                                  -----------------------------------------
                                                              , D.D.S.
                                  ----------------------------


                                       24
<PAGE>

                                  INDEX TO EXHIBITS


    Exhibit             Description
    -------             -----------
    Annex I        Acquisition Consideration
    A              Target Companies
    1.1            Assets
    1.2(b)         Excluded Assets
    1.3(b)         Assumed Liabilities
    2.1            Existence; Good Standing; Partners/Ownership
    2.3            Permits and Licenses
    2.4            Consents
    2.8            Leases
    2.10           Real and Personal Property; Encumbrances
    2.12           Patents and Trademarks; Names
    2.13           Payroll Information; Employment Agreements
    2.15           Contracts (other than Leases and Employment Agreements) 
    2.16           Subsequent Events
    2.19           Debt
    2.20           Insurance Policies
    2.21           Employee Benefit Plans
    2.26           Banking Relations
    2.28           Payors
    7.7            Form of Service Agreement
    7.8            Form of Employment Agreement
    9.1(l)         Form of Registration Rights Agreement
    14.2           Addresses for Notice

                                       25
<PAGE>

                                     ANNEX I

                              ACQUISITION CONSIDERATION


    The aggregate consideration to be received by the Contributor pursuant to
the Agreement (the "Acquisition Consideration") is the following: 


    Shares of Pentegra Common Stock equal to $_________ divided by the initial
public offering price of Pentegra. 

    Cash in the amount of $________________________.

    No fractional shares of Pentegra Common Stock will be issued; rather,
shares of Pentegra Common Stock to be issued to Contributor shall be rounded to
the nearest whole share. 
                                                 


                                       26

<PAGE>

                                                                   EXHIBIT 2.3



                         FORM OF ASSET CONTRIBUTION AGREEMENT

                                     BY AND AMONG


                            PENTEGRA DENTAL GROUP, INC., 

                  _________________________________ [target entity]

                                         and

                   _______________________________ [shareholders] 

<PAGE>

                                  TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                 Page
                                                                                 ----
<S>                                                                              <C>

Section 1.  TERMS OF THE CONTRIBUTION
    1.2     CONTRIBUTION OF ASSETS . . . . . . . . . . . . . . . . . . . . . . . . .1
    1.3     EXCLUDED ASSETS. . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
    1.4     PURCHASE PRICE; ASSUMPTION OF LIABILITIES. . . . . . . . . . . . . . . .2
    1.5     SUBSEQUENT ACTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Section 2.  REPRESENTATIONS AND WARRANTIES OF CONTRIBUTOR AND SHAREHOLDERS.
    2.1     CORPORATE EXISTENCE; GOOD STANDING . . . . . . . . . . . . . . . . . . .2
    2.2     POWER AND AUTHORITY FOR TRANSACTIONS . . . . . . . . . . . . . . . . . .3
    2.3     PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS. . . . . . . . . . . .3
    2.4     CONSENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
    2.5     DISTRIBUTIONS AND REPURCHASES. . . . . . . . . . . . . . . . . . . . . .3
    2.6     CORPORATE RECORDS. . . . . . . . . . . . . . . . . . . . . . . . . . . .3
    2.7     CONTRIBUTOR'S FINANCIAL INFORMATION. . . . . . . . . . . . . . . . . . .3
    2.8     LEASES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
    2.9     CONDITION OF ASSETS. . . . . . . . . . . . . . . . . . . . . . . . . . .4
    2.10    TITLE TO AND ENCUMBRANCES ON PROPERTY. . . . . . . . . . . . . . . . . .4
    2.11    INVENTORIES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
    2.12    INTELLECTUAL PROPERTY RIGHTS; NAMES. . . . . . . . . . . . . . . . . . .4
    2.13    DIRECTORS AND OFFICERS; PAYROLL INFORMATION; EMPLOYEES . . . . . . . . .4
    2.14    LEGAL PROCEEDINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . .4
    2.15    CONTRACTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
    2.16    SUBSEQUENT EVENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . .5
    2.17    TAXES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
    2.18    COMMISSIONS AND FEES . . . . . . . . . . . . . . . . . . . . . . . . . .7
    2.19    LIABILITIES; DEBT. . . . . . . . . . . . . . . . . . . . . . . . . . . .7
    2.20    INSURANCE POLICIES . . . . . . . . . . . . . . . . . . . . . . . . . . .7
    2.21    EMPLOYEE BENEFIT PLANS . . . . . . . . . . . . . . . . . . . . . . . . .7
    2.22    ADVERSE AGREEMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . .8
    2.23    COMPLIANCE WITH LAWS IN GENERAL. . . . . . . . . . . . . . . . . . . . .8
    2.24    THIRD PARTY PAYORS . . . . . . . . . . . . . . . . . . . . . . . . . . .8
    2.25    NO UNTRUE REPRESENTATIONS. . . . . . . . . . . . . . . . . . . . . . . .8
    2.26    BANKING RELATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . .8
    2.27    OWNERSHIP INTERESTS OF INTERESTED PERSONS; COMPETITORS . . . . . . . . .8
    2.28    PAYORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Section 3.  REPRESENTATIONS AND WARRANTIES OF PENTEGRA
    3.1     CORPORATE EXISTENCE: GOOD STANDING . . . . . . . . . . . . . . . . . . .9
    3.2     POWER AND AUTHORITY; CONSENTS. . . . . . . . . . . . . . . . . . . . . .9
    3.3     PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS. . . . . . . . . . . .9
    3.4     LEGAL PROCEEDINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . .9
    3.5     TAXES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
    3.6     COMMISSIONS AND FEES . . . . . . . . . . . . . . . . . . . . . . . . . 10
    3.7     CAPITAL STOCK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
    3.8     NO UNTRUE REPRESENTATIONS. . . . . . . . . . . . . . . . . . . . . . . 10

Section 4.  COVENANTS OF CONTRIBUTOR AND SHAREHOLDERS.
    4.1     CONSUMMATION OF AGREEMENT; EXHIBITS. . . . . . . . . . . . . . . . . . 10

                                      -i-

<PAGE>

    4.2     BUSINESS OPERATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . 10
    4.3     ACCESS AND NOTICE. . . . . . . . . . . . . . . . . . . . . . . . . . . 10
    4.4     APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS. . . . . . . . . . 10
    4.5     ACQUISITION PROPOSALS. . . . . . . . . . . . . . . . . . . . . . . . . 10
    4.6     FUNDING OF ACCRUED EMPLOYEE BENEFITS . . . . . . . . . . . . . . . . . 11
    4.7     EMPLOYEE MATTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
    4.8     DISTRIBUTIONS AND REPURCHASES. . . . . . . . . . . . . . . . . . . . . 11
    4.9     REQUIREMENTS TO EFFECT ACQUISITION . . . . . . . . . . . . . . . . . . 11
    4.10    ACCOUNTING AND TAX MATTERS . . . . . . . . . . . . . . . . . . . . . . 11
    4.11    WAIVER OF BULK TRANSFER COMPLIANCE . . . . . . . . . . . . . . . . . . 11
    4.12    LEASE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
    4.13    HIRING OF EMPLOYEES. . . . . . . . . . . . . . . . . . . . . . . . . . 12
    4.14    EMPLOYEE BENEFIT PLANS . . . . . . . . . . . . . . . . . . . . . . . . 12
    4.15    INSURANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Section 5.  COVENANTS OF PENTEGRA
    5.1     CONSUMMATION OF AGREEMENT; EXHIBITS. . . . . . . . . . . . . . . . . . 12
    5.2     APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS. . . . . . . . . . 12

Section 6.  COVENANTS OF PENTEGRA AND CONTRIBUTOR AND SHAREHOLDERS
    6.1     FILINGS; OTHER ACTIONS . . . . . . . . . . . . . . . . . . . . . . . . 12

Section 7.  PENTEGRA CONDITIONS PRECEDENT
    7.1     REPRESENTATIONS AND WARRANTIES . . . . . . . . . . . . . . . . . . . . 13
    7.2     COVENANTS AND CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . 13
    7.3     PROCEEDINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
    7.4     NO MATERIAL ADVERSE CHANGE . . . . . . . . . . . . . . . . . . . . . . 13
    7.5     DUE DILIGENCE REVIEW . . . . . . . . . . . . . . . . . . . . . . . . . 13
    7.6     APPROVAL BY THE BOARD OF DIRECTORS . . . . . . . . . . . . . . . . . . 13
    7.7     SERVICE AGREEMENT; GUARANTY AGREEMENT. . . . . . . . . . . . . . . . . 13
    7.8     EMPLOYMENT ARRANGEMENTS. . . . . . . . . . . . . . . . . . . . . . . . 13
    7.9     CONSENTS AND APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . 13
    7.10    CLOSING DELIVERIES . . . . . . . . . . . . . . . . . . . . . . . . . . 13
    7.11    DEBT AND RECEIVABLES . . . . . . . . . . . . . . . . . . . . . . . . . 13
    7.12    INSURANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
    7.13    NO CHANGE IN WORKING CAPITAL . . . . . . . . . . . . . . . . . . . . . 13
    7.14    SECURITIES APPROVAL. . . . . . . . . . . . . . . . . . . . . . . . . . 14

Section 8.  CONTRIBUTOR'S AND SHAREHOLDERS' CONDITIONS PRECEDENT
    8.1     REPRESENTATIONS AND WARRANTIES . . . . . . . . . . . . . . . . . . . . 14
    8.2     COVENANTS AND CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . 14
    8.3     PROCEEDINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
    8.4     CLOSING DELIVERIES . . . . . . . . . . . . . . . . . . . . . . . . . . 14
    8.5     SECURITIES APPROVAL. . . . . . . . . . . . . . . . . . . . . . . . . . 14

Section 9.  CLOSING DELIVERIES
    9.1     DELIVERIES OF CONTRIBUTOR AND SHAREHOLDERS . . . . . . . . . . . . . . 14
    9.2     DELIVERIES OF PENTEGRA . . . . . . . . . . . . . . . . . . . . . . . . 15

Section 10. NATURE AND SURVIVAL OF REPRESENTATIONS AND WARRANTIES; INDEMNIFICATION
    10.1    NATURE AND SURVIVAL. . . . . . . . . . . . . . . . . . . . . . . . . . 16
    10.2    INDEMNIFICATION BY PENTEGRA. . . . . . . . . . . . . . . . . . . . . . 16
    10.3    INDEMNIFICATION BY CONTRIBUTOR AND SHAREHOLDERS. . . . . . . . . . . . 17

                                       -ii-

<PAGE>

    10.4    INDEMNIFICATION PROCEDURE. . . . . . . . . . . . . . . . . . . . . . . 18
    10.5    RIGHT OF SETOFF. . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Section 11. TERMINATION

Section 12. TRANSFER REPRESENTATIONS
    12.1    TRANSFER RESTRICTIONS. . . . . . . . . . . . . . . . . . . . . . . . . 19
    12.2    INVESTMENTS; COMPLIANCE WITH LAW . . . . . . . . . . . . . . . . . . . 19
    12.3    ECONOMIC RISK; SOPHISTICATION. . . . . . . . . . . . . . . . . . . . . 20

Section 13. NONDISCLOSURE OF CONFIDENTIAL INFORMATION

Section 14. MISCELLANEOUS
    14.1    TAX COVENANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
    14.2    NOTICES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
    14.3    FURTHER ASSURANCES . . . . . . . . . . . . . . . . . . . . . . . . . . 21
    14.4    EACH PARTY TO BEAR COSTS . . . . . . . . . . . . . . . . . . . . . . . 21
    14.5    PUBLIC DISCLOSURES . . . . . . . . . . . . . . . . . . . . . . . . . . 21
    14.6    GOVERNING LAW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
    14.7    CAPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
    14.8    INTEGRATION OF EXHIBITS. . . . . . . . . . . . . . . . . . . . . . . . 21
    14.9    ENTIRE AGREEMENT/AMENDMENT . . . . . . . . . . . . . . . . . . . . . . 21
    14.10   COUNTERPARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
    14.11   BINDING EFFECT/ASSIGNMENT. . . . . . . . . . . . . . . . . . . . . . . 22
    14.12   COSTS OF ENFORCEMENT . . . . . . . . . . . . . . . . . . . . . . . . . 22
    14.13   PRORATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
    14.14   AMENDMENTS; WAIVERS. . . . . . . . . . . . . . . . . . . . . . . . . . 22
    14.15   ARBITRATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
    14.16   SEVERABILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
</TABLE>

                                       -iii-

<PAGE>
                             ASSET CONTRIBUTION AGREEMENT

    This ASSET CONTRIBUTION AGREEMENT (this "Agreement"), made and executed 
as of  ________________, 1997, is by and among PENTEGRA  DENTAL GROUP, INC., 
a Delaware corporation ("Pentegra"), __________________________________________
("Contributor") and _________________________________, shareholders of 
Contributor  (referred to herein as "Shareholder" or "Shareholders").  

                                     WITNESSETH:

    WHEREAS, Contributor operates a dental practice ("Business") and Pentegra 
is engaged in the business of  managing certain non-dentistry aspects of 
dental practices; 

    WHEREAS, Contributor desires to contribute to Pentegra, and Pentegra 
desires to receive from Contributor, certain assets of Contributor; 

    WHEREAS, Pentegra or its affiliated designee has entered into or intends 
to enter into Agreements and Plans of Reorganization, Asset Contribution 
Agreements and other acquisition agreements (collectively, the "Other 
Agreements") with such persons or entities or the stockholders of such 
entities listed on EXHIBIT A (together with Contributor, the "Target 
Companies");

    WHEREAS, it is intended for Federal income tax purposes that the 
transfers contemplated by this Agreement, the Other Agreements and Pentegra's 
initial public offering ("Initial Public Offering") of shares of its common 
stock, par value $.01 per share ("Pentegra Common Stock") shall qualify as an 
exchange within the meaning of Section 351 of the Internal Revenue Code of 
1986, as amended ("IRC" or "Code");

    WHEREAS, the consummation of the transfers to Pentegra pursuant to this 
Agreement is intended to occur in connection with, and is conditioned upon, 
the simultaneous consummation of the transfers contemplated by the Other 
Agreements and the Initial Public Offering.

     NOW THEREFORE, in consideration of the mutual promises and covenants 
hereinafter set forth, and for other good and valuable consideration, the 
sufficiency of which are hereby acknowledged, the parties agree as follows:

SECTION 1.  TERMS OF THE CONTRIBUTION.

    1.1     THE CLOSING.  The closing of the transactions contemplated hereby 
shall take place at 10:00 am local time, at the offices of Jackson & Walker, 
L.L.P., on the day on which the Initial Public Offering of Pentegra Common 
Stock is consummated.  The date on which the Closing occurs is hereinafter 
referred to as the "Closing Date". 

    1.2     CONTRIBUTION OF ASSETS.  Subject to and upon the terms and 
conditions contained herein, on the Closing Date, Contributor shall convey, 
transfer, deliver and assign to Pentegra or any affiliate of Pentegra 
designated by Pentegra all of Contributor's right, title and interest in and 
to those certain assets described on EXHIBIT 1.1 attached hereto 
(individually, "Asset", and collectively "Assets"), free and clear of all 
obligations, security interests, claims, liens and encumbrances, except as 
specifically assumed, or taken subject to, by Pentegra pursuant to SECTION 
1.3(b) hereof. 

                                       1

<PAGE>

    1.3     EXCLUDED ASSETS.  There shall be excluded from the Assets to be 
transferred and contributed hereunder, and Contributor shall retain all of 
its right, title and interest in and to, the assets not specifically 
transferred hereunder, including without limitation, the assets described on 
EXHIBIT 1.2 (the "Excluded Assets").

    1.4     PURCHASE PRICE; ASSUMPTION OF LIABILITIES.  As consideration for 
the Assets and the representations, warranties and agreements of Contributor 
contained herein, Pentegra shall, on the Closing Date:

            (a)    Cause to be transferred to Contributor the consideration 
specified in ANNEX I attached hereto (the "Acquisition Consideration"); and.  

            (b)    Except as otherwise provided herein, assume and perform or 
discharge on or after the Closing Date, the contracts, leases, obligations, 
commitments, liabilities and indebtedness of Contributor listed on EXHIBIT 
1.3(b) attached hereto to the extent that such obligations, commitments, 
liabilities and indebtedness  are current and not otherwise in default. (the 
"Assumed Liabilities").  Notwithstanding any contrary provision contained 
herein, Pentegra shall not be deemed to have assumed, nor shall Pentegra 
assume: (i) any liability, commitment or obligation or trade payable or 
indebtedness not specifically disclosed on EXHIBIT 1.3(b), (ii) any liability 
set forth on EXHIBIT 1.3(b) which may be incurred by reason of any breach of 
or default under such contracts, leases, commitments or obligations which 
occurred on or before the Closing Date; (iii) any liability for any employee 
benefits payable to employees of Contributor, including, but not limited to, 
liabilities arising under any Contributor Plan (as defined in SECTION 2.21 
hereof); (iv) any liability based upon or arising out of a violation of any 
antitrust or similar restraint-of-trade laws by any Shareholder or  
Contributor, including, without limiting the generality of the foregoing, any 
such antitrust liability which may arise in connection with agreements, 
contracts, commitments or orders for the sale of goods or provision of 
services by Contributor reflected on the books of Contributor at or prior to 
the Closing Date; (v) any liability based upon or arising out of any tortious 
or wrongful actions of Contributor, any licensed professional employee or 
independent contractor of Contributor or any Shareholder, (vi) any liability 
for the payment of any taxes of Contributor or any Shareholder, including 
without limitation, sales, use and other transfer taxes and income taxes 
arising from or by reason of the transactions contemplated by this Agreement; 
(vii) any indebtedness secured by deeds of trust or mortgages on real 
property; nor (viii) any liability incurred or to be incurred pursuant to any 
malpractice or other suits or actions pending against Contributor or any 
Shareholder. 

    1.5     SUBSEQUENT ACTIONS. If, at any time after the Closing Date, 
Pentegra shall consider or be advised that any deeds, bills of sale, 
assignments, assurances or any other actions or things are necessary or 
desirable to vest, perfect or confirm of record or otherwise in Pentegra its 
right, title or interest in, to or under any of the Assets or otherwise to 
carry out this Agreement, in return for the consideration set forth in this 
Agreement, Contributor and Shareholders shall execute and deliver all such 
deeds, bills of sale, assignments and assurances and take and do all such 
other actions and things as may be necessary or desirable to vest, perfect or 
confirm any and all right, title and interest in, to and under the Assets in 
Pentegra or otherwise to carry out this Agreement.

SECTION 2.  REPRESENTATIONS AND WARRANTIES OF CONTRIBUTOR AND SHAREHOLDERS.

    Contributor and Shareholders, jointly and severally, hereby represent and 
warrant to Pentegra as follows:

    2.1     CORPORATE EXISTENCE; GOOD STANDING.  Contributor is a 
professional corporation or association, as applicable, duly organized, 
validly existing and in good standing under the laws of the State of 
__________________.  Contributor has all necessary corporate powers to own 
all of its assets and to carry on its business as such business is now being 
conducted.  Contributor does not own stock in or control, directly or 
indirectly, any other corporation, association or business organization, nor 
is Contributor a party to any joint venture or partnership.  The Shareholders 
are the sole shareholders of Contributor and own all outstanding shares of 
capital stock free of all security interests, claims, encumbrances and liens 
in the amounts set forth on EXHIBIT 2.1.  Each share of Contributor's common 
stock has been legally and validly issued and fully paid and nonassessable.  
No shares of capital stock of Contributor are owned by Contributor in 
treasury. There are no outstanding (a) bonds, debentures, notes or other 
obligations the holders of which have the right to vote with the stockholders 
of Contributor on any matter, (b) securities of Contributor convertible into 
equity interests in Contributor, or (c) commitments, options, rights or 
warrants to issue any such equity interests 

                                       2

<PAGE>

in Contributor, to issue securities of Contributor convertible into such 
equity interests, or to redeem any securities of Contributor.  No shares of 
capital stock of Contributor have been issued or disposed of in violation of 
the preemptive rights, rights of first refusal or similar rights of any of 
Contributor's stockholders. Contributor is not required to qualify to do 
business as a foreign corporation in any other state or jurisdiction by 
reason of its business, properties or activities in or relating to such other 
state or jurisdiction.  Contributor does not have any assets, employees or 
offices in any state other than the state set forth in the first sentence of 
this SECTION 2.1.

    2.2     POWER AND AUTHORITY FOR TRANSACTIONS.  Contributor has the 
corporate power to execute, deliver and perform this Agreement and all 
agreements and other documents executed and delivered by it pursuant to this 
Agreement or to be executed and delivered on the Closing Date, and has taken 
all action required by law, its Articles or Certificate of Incorporation, its 
Bylaws or otherwise, to authorize the execution, delivery and performance of 
this Agreement and such related documents.  Each Shareholder has the legal 
capacity to enter into and perform this Agreement and the other agreements to 
be executed and delivered in connection herewith.  Contributor has obtained 
the approval of its stockholders necessary to the consummation of the 
transactions contemplated herein.  This Agreement and all agreements and 
documents executed and delivered in connection herewith have been, or will be 
as of the Closing Date, duly executed and delivered by Contributor and 
Shareholders, as appropriate,  and constitute or will constitute the legal, 
valid and binding obligations of Contributor and Shareholders, enforceable 
against Contributor and Shareholders in accordance with their respective 
terms, except as may be limited by applicable bankruptcy, insolvency or 
similar laws affecting creditors' rights generally or the availability of 
equitable remedies.  The execution and delivery of this Agreement, and the 
agreements executed and delivered pursuant to this Agreement or to be 
executed and delivered on the Closing Date, do not, and, subject to the 
receipt of consents described on EXHIBIT 2.4, the consummation of the actions 
contemplated hereby will not, violate any provision of the Articles or 
Certificate of Incorporation or Bylaws of Contributor or any provisions of, 
or result in the acceleration of, any obligation under any mortgage, lien, 
lease, agreement, rent, instrument, order, arbitration award, judgment or 
decree to which Contributor or any Shareholder is a party or by which 
Contributor or any Shareholder is bound, or violate any material restrictions 
of any kind to which Contributor is subject, or result in any lien or 
encumbrance on any of Contributor's assets or the Assets.

    2.3     PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS.  All building 
or other permits, certificates of occupancy, concessions, grants, franchises, 
licenses, certificates of need and other governmental authorizations and 
approvals required for the conduct of the Business or the use of the Assets, 
or waivers thereof, have been duly obtained and are in full force and effect 
and are described on EXHIBIT 2.3.  There are no proceedings pending or, to 
the knowledge of Contributor and Shareholders, threatened, which may result 
in the revocation, cancellation or suspension, or any adverse modification, 
of any such licenses or permits. 

    2.4     CONSENTS.  Except as set forth on EXHIBIT 2.4, no consent, 
authorization, permit, license or filing with any governmental authority, any 
lender, lessor, any manufacturer or supplier or any other person or entity is 
required to authorize, or is required in connection with, the execution, 
delivery and performance of this Agreement and the agreements and documents 
contemplated hereby on the part of Contributor or Shareholders. 

    2.5     DISTRIBUTIONS AND REPURCHASES.  No distribution, payment or 
dividend of any kind has been declared or paid by Contributor on any of its 
capital stock since the Balance Sheet Date.  No repurchase of any of 
Contributor's capital stock has been approved, effected or is pending, or is 
contemplated by Contributor. 

    2.6     CORPORATE RECORDS.  True and correct copies of the Articles or 
Certificate of Incorporation, Bylaws and minutes of Contributor and all 
amendments thereto have been delivered to Pentegra.  The minute books of 
Contributor contain accurate minutes of all meetings of and consents to 
actions taken without meetings of the Board of Directors and stockholders of 
Contributor since its formation.  The books of account of Contributor have 
been kept accurately in the ordinary course of business and the revenues, 
expenses, assets and liabilities of Contributor have been properly recorded 
in such books.

    2.7     CONTRIBUTOR'S FINANCIAL INFORMATION.  Contributor has heretofore 
furnished Pentegra with copies of its unaudited balance sheet and related 
unaudited statements of income, retained earnings and cash flows for its 
prior two full fiscal years, as well as copies of its unaudited balance sheet 
as of December 31, 1996 and June 30, 1997 

                                       3

<PAGE>

(collectively, the "Balance Sheet" and the latest date thereof shall be 
referred to as the "Balance Sheet Date") and any related unaudited statements 
of income, retained earnings, schedule of accounts receivable, accounts 
payable and accrued liabilities, and cash flows for the twelve months then 
ended (collectively, with the related notes thereto, the "Financial 
Statements").  The Financial Statements fairly present the financial 
condition and results of operations of Contributor as of the dates and for 
the periods indicated and reflect all fixed and contingent liabilities of 
Contributor.

    2.8     LEASES.  EXHIBIT 2.8 attached hereto sets forth a list of all 
leases pursuant to which Contributor or any Shareholder leases, as lessor or 
lessee, real or personal property used in operating the Business, related to 
the Assets or otherwise.  All such leases listed on EXHIBIT 2.8 are valid and 
enforceable in accordance with their respective terms, and there is not under 
any such lease any existing default by Contributor, as lessor or lessee, or 
any condition or event of which any Shareholder or Contributor has knowledge 
which with notice or lapse of time, or both, would constitute a default, in 
respect of which Contributor or Shareholders have not taken adequate steps to 
cure such default or to prevent a default from occurring.

    2.9     CONDITION OF ASSETS.   All of the Assets are in good condition 
and repair subject to normal wear and tear and conform with all applicable 
ordinances, regulations and other laws, and Contributor and Shareholders have 
no knowledge of any latent defects therein.

    2.10    TITLE TO AND ENCUMBRANCES ON PROPERTY.  Contributor has good, 
valid and marketable title to all of the Assets, free and clear of any liens, 
claims, charges, exceptions or encumbrances, except for those, if any, which 
are set forth in EXHIBIT 2.10 attached hereto.  Contributor shall cause all 
encumbrances set forth on EXHIBIT 2.10 (other than those encumbrances 
indicated on EXHIBIT 1.3(b)) to be released or terminated prior to the 
Closing Date and evidence of such releases of liens and claims shall be 
provided to Pentegra on the Closing Date and the Assets shall not be used to 
satisfy such liens, claims or encumbrances.

    2.11    INVENTORIES.    All of the Assets constituting inventory are 
owned or used by Contributor, are in good, current, standard and merchantable 
condition and are not obsolete or defective.

    2.12    INTELLECTUAL PROPERTY RIGHTS; NAMES.  Except as set forth on 
EXHIBIT 2.12, Contributor has no right, title or interest in or to patents, 
patent rights, corporate names, assumed names, manufacturing processes, trade 
names, trademarks, service marks, inventions, specialized treatment 
protocols, copyrights, formulas and trade secrets or similar items.   Set 
forth in EXHIBIT 2.12 is a listing of all names of all predecessor companies 
of Contributor, including the names of any entities from whom Contributor 
previously acquired significant assets.  Except for off-the-shelf software 
licenses and except as set forth on EXHIBIT 2.12, Contributor is not a 
licensee in respect of any patents, trademarks, service marks, trade names, 
copyrights or applications therefor, or manufacturing processes, formulas or 
trade secrets or similar items and no such licenses are necessary for the 
conduct of the Business or the use of the Assets.  No claim is pending or has 
been made to the effect that the Assets or the present or past operations of 
Contributor in connection with the Assets or Business infringe upon or 
conflict with the asserted rights of others to any patents, patent rights, 
manufacturing processes, trade names, trademarks, service marks, inventions, 
licenses, specialized treatment protocols, copyrights, formulas, know-how and 
trade secrets.  Contributor has the sole and exclusive right to use all 
Assets constituting proprietary rights without infringing or violating the 
rights of any third parties and no consents of any third parties are required 
for the use thereof by Pentegra. 

    2.13    DIRECTORS AND OFFICERS; PAYROLL INFORMATION; EMPLOYEES.  Set 
forth on EXHIBIT 2.13 attached hereto is a true and complete list, as of the 
date of this Agreement of: (a) the name of each director and officer of 
Contributor and the offices held by each, (b) the most recent payroll report 
of Contributor, showing all current employees of Contributor and their 
current levels of compensation, (c) promised increases in compensation of 
employees of Contributor that have not yet been effected, (d) oral or written 
employment agreements, consulting agreements or independent contractor 
agreements (and all amendments thereto) to which Contributor is a party, 
copies of which have been delivered to Pentegra, and (e) all employee 
manuals, materials, policies, procedures and work-related rules, copies of 
which have been delivered to Pentegra. Contributor is in compliance with all 
applicable laws, rules, regulations and ordinances respecting employment and 
employment practices.  Contributor has not engaged in any unfair labor 
practice.  There are no unfair labor practices charges or complaints pending 
or threatened against Contributor, and Contributor has never been a party to 
any agreement with any union, labor organization or collective bargaining 
unit.

                                       4

<PAGE>

    2.14    LEGAL PROCEEDINGS.  Neither any Shareholder, Contributor nor the 
Business nor any of the Assets is subject to any pending, nor does 
Contributor or any Shareholder have knowledge of any threatened, litigation, 
governmental investigation, condemnation or other proceeding against or 
relating to or affecting Contributor, any Shareholder, the Business, the 
Assets or the transactions contemplated by this Agreement, and, to the 
knowledge of Contributor and Shareholders, no basis for any such action 
exists, nor is there any legal impediment of which Contributor or any 
Shareholder has knowledge to the continued operation of its business or the 
use of the Assets in the ordinary course, subject to consents set forth on 
EXHIBIT 2.4. 

    2.15    CONTRACTS.  Contributor has delivered to Pentegra true copies of 
all written, and disclosed to Pentegra all oral, outstanding contracts, 
obligations and commitments of Contributor ("Contracts"), entered into in 
connection with and related to the Assets or the Business, all of which are 
listed or incorporated by reference on EXHIBIT 2.8 (in the case of leases), 
EXHIBIT 2.13 (in the case of employment agreements) and EXHIBIT 2.15 (in the 
case of Contracts other than leases) attached hereto.  Except as otherwise 
indicated on such Exhibits, all of such Contracts are valid, binding and 
enforceable in accordance with their terms and are in full force and effect, 
and no defenses, offsets or counterclaims have been asserted or may be made 
by any party thereto.  Except as indicated on such Exhibits, there is not 
under any such Contract any existing default by Contributor or any 
Shareholder, or any condition or event of which Contributor or any 
Shareholder has knowledge which with notice or lapse of time, or both, would 
constitute a default.   Contributor and Shareholders have no knowledge of any 
default by any other party to such Contracts.  Contributor and Shareholders 
have not received notice of the intention of any party to any Contract to 
cancel or terminate any Contract and have no reason to believe that any 
amendment or change to any Contract is contemplated by any party thereto.  
Other than those contracts, obligations and commitments listed on EXHIBIT 
2.8, EXHIBIT 2.13 and EXHIBIT 2.15, Contributor are not a party to any 
material written or oral agreement contract, lease or arrangement, including 
without limitation, any:

            (a)    Contract related to the Assets other than this Agreement;

            (b)    Employment, consulting or compensation agreement or 
arrangement;

            (c)    Labor or collective bargaining agreement;

            (d)    Lease agreement with respect to any property, whether as 
lessor or lessee;

            (e)    Deed, bill of sale or other document evidencing an 
interest in or agreement to purchase or sell real or personal property;

            (f)    Contract for the purchase of materials, supplies or 
equipment (i) which is in excess of the requirements of the Business now 
booked or for normal operating inventories, or (ii) which is not terminable 
upon notice of thirty (30) days or less;

            (g)    Agreement for the purchase from a supplier of all or 
substantially all of the requirements of the Business of a particular product 
or service;

            (h)    Loan agreement or other contract for money borrowed or 
lent or to be borrowed or lent to another; 

            (i)    Contracts containing non-competition covenants; 

            (j)    Financial or similar contracts or agreements with patients 
of the Contributor or Shareholders, oral or written, that provide for 
prepayments or deferred installment payments; or 

            (k)    Other contracts or agreements that involve either an 
unperformed commitment in excess of $1,000 or that terminate or can only be 
terminated by Contributor on more than 30 days after the date hereof.

                                       5

<PAGE>

    2.16    SUBSEQUENT EVENTS.  Other than as set forth on EXHIBIT 2.16, 
Contributor has not, since the Balance Sheet Date:

            (a)    Incurred any material obligation or liability (absolute, 
accrued, contingent or otherwise) or entered into any contract, lease, 
license or commitment, except in connection with the performance of this 
Agreement;  

            (b)    Discharged or satisfied any material lien or encumbrance, 
or paid or satisfied any material obligation or liability (absolute, accrued, 
contingent or otherwise) other than (i) liabilities shown or reflected on the 
Balance Sheet, (ii) liabilities incurred since the Balance Sheet Date in the 
ordinary course of business;

            (c)    Formed or acquired or disposed of any interest in any 
corporation, partnership, joint venture or other entity;

            (d)    Made any payments to or loaned any money to any person or 
entity other than in the ordinary course of business;

            (e)    Lost or terminated any employee, patient, customer or 
supplier that has or may have, individually or in the aggregate, a material 
adverse effect on the Business; 

            (f)    Increased or established any reserve for taxes or any 
other liability on its books or otherwise provided therefor, except as may 
have been required due to income or operations of Contributor since the 
Balance Sheet Date;

            (g)    Mortgaged, pledged or subjected to any lien, charge or 
other encumbrance any of the Assets, tangible or intangible;

            (h)    Sold or contracted to sell or transferred or contracted to 
transfer any of the Assets or any other assets used in the conduct of the 
Business, canceled any debts or claims or waived any rights, except in the 
ordinary course of business;

            (i)    Except in the ordinary course or business consistent with 
past practices, granted any increase in the rates of pay of employees, 
consultants or agents, or by means of any bonus or pension plan, contract or 
other commitment, increased the compensation of any officer, employee, 
consultant or agent;

            (j)    Authorized or incurred any capital expenditures in excess 
of Five Thousand and No/100 Dollars ($5,000.00);

            (k)    Except for this Agreement and any other agreement executed 
and delivered pursuant to this Agreement, entered into any material 
transaction other than in the ordinary course of business or permitted 
hereunder; 

            (l)    Redeemed, purchased, sold or issued any stock, bonds or 
other securities;

            (m)    Experienced damage, destruction or loss (whether or not 
covered by insurance) materially and adversely affecting any of its 
properties, assets or business or the Business or the Assets, or experienced 
any other material adverse change in its financial condition, assets, 
prospects, liabilities or business;

            (n)    Declared or paid a distribution, payment or dividend of 
any kind on the capital stock of Contributor; 

            (o)    Repurchased, approved any repurchase or agreed to 
repurchase any of Contributor's capital stock; or 

            (p)    Suffered any material adverse change in the Business or to 
the Assets. 

                                       6

<PAGE>

    2.17    TAXES. (a)  Contributor has filed all tax returns (including tax 
reports and other statements) required to have been filed by it, and has paid 
all taxes (including any interest, penalty or additions thereto) required to 
have been paid by it.  All such tax returns are complete and accurate in all 
respects and properly reflect the relevant taxes for the periods covered 
thereby.    Contributor has not received any notice that any tax deficiency 
or delinquency has been  or may be asserted against Contributor.  There are 
no audits relating to taxes of Contributor pending or in process or, to the 
knowledge of Contributor, threatened.  Contributor is not currently the 
beneficiary of any waiver of any statute of limitations in respect of taxes 
nor of any extension of time within which to file any tax return or to pay 
any tax assessment or deficiency.  There are no liens or encumbrances 
relating to taxes on or threatened against any of the assets of Contributor.  
Contributor has withheld and paid all taxes required by law to have been 
withheld and paid by it.  Neither Contributor nor any predecessor of 
Contributor is or has been a party to any tax allocation or sharing agreement 
or a member of an affiliated group of corporations filing a consolidated 
Federal income tax return.  Contributor has delivered to Pentegra correct and 
complete copies of Contributor's three most recently filed annual state, 
local and Federal income tax returns, together with all examination reports 
and statements of deficiencies assessed against or agreed to by Contributor 
during the three calendar year period preceding the date of this Agreement.  
Contributor has neither made any payments, is obligated to make any payments, 
or is a party to any agreement that under any circumstance could obligate it 
to make any payments that will not be deductible under Code section 280G.

    (b)  Contributor does not intend to dispose of any of the shares of 
Pentegra Common Stock to be received hereunder and is not a party to any 
plan, arrangement or agreement for the disposition of such shares.  
Contributor and Shareholders have no knowledge, after due inquiry, of any 
such intent, plan, arrangement or agreement by any Shareholder.   Nothing 
contained herein shall prohibit Contributor from selling such shares of 
Pentegra Common Stock after the designated holding period and in accordance 
with SECTION 12.1 hereof.

    2.18    COMMISSIONS AND FEES.  There are no claims for brokerage 
commissions or finder's or similar fees in connection with the transactions 
contemplated by this Agreement which may be now or hereafter asserted against 
Pentegra, Contributor or Contributor's shareholders resulting from any action 
taken by Contributor or any Shareholder or their respective agents or 
employees, or any of them.

    2.19    LIABILITIES; DEBT.  Except to the extent reflected or reserved 
against on the Balance Sheet, Contributor did not have, as of the Balance 
Sheet Date, and has not incurred since that date and will not have incurred 
as of the Closing Date, any liabilities or obligations of any nature, whether 
accrued, absolute, contingent or otherwise, and whether due or to become due, 
other than those incurred in the ordinary course of business or as set forth 
on EXHIBIT 2.16.  Contributor and Shareholders do not know, or have 
reasonable grounds to know, of any basis for the assertion against 
Contributor or any Shareholder as of the Balance Sheet Date, of any claim or 
liability of any nature in any amount not fully reflected or reserved against 
on the Balance Sheet, or of any claim or liability of any nature arising 
since that date other than those incurred in the ordinary course of business 
or contemplated by this Agreement.  All indebtedness of Contributor 
(including without limitation, indebtedness for borrowed money, guaranties 
and capital lease obligations) is described on EXHIBIT 2.19 attached hereto.

    2.20    INSURANCE POLICIES.  Contributor, each Shareholder and each 
licensed professional of Contributor carries property, liability, 
malpractice, workers' compensation and such other types of insurance as is 
customary in the industry.  Valid and enforceable policies in such amounts 
are outstanding and duly in force and will remain duly in force through the 
Closing Date.  All such policies are described in EXHIBIT 2.20 attached 
hereto and true and correct copies have been delivered to Pentegra.   Neither 
Shareholders nor Contributor have not received notice or other communication 
from the issuer of any such insurance policy cancelling or amending such 
policy or threatening to do so. Neither Contributor, nor any Shareholder nor 
any licensed professional employee of Contributor has any outstanding claims, 
settlements or premiums owed against any insurance policy.

    2.21    EMPLOYEE BENEFIT PLANS.  Except as set forth on EXHIBIT 2.21 
attached hereto, Contributor has neither established, nor maintains, nor is 
obligated to make contributions to or under or otherwise participate in, (a) 
any bonus or other type of compensation or employment plan, program, 
agreement, policy, commitment, contract or arrangement (whether or not set 
forth in a written document); (b) any pension, profit-sharing, retirement or 
other plan, program or arrangement; or (c) any other employee benefit plan, 
fund or program, including, but not limited to, those described in SECTION 
3(3) of the Employee Retirement Income Security Act of 1974, as amended 
("ERISA").  All such plans listed 

                                       7

<PAGE>

on EXHIBIT 2.20 (individually "Contributor Plan," and collectively 
"Contributor Plans") have been operated and administered in all material 
respects in accordance with all applicable laws, rules and regulations, 
including without limitation, ERISA, the Internal Revenue Code of 1986, as 
amended, Title VII of the Civil Rights Act of 1964, as amended, the Equal Pay 
Act of 1967, as amended, the Age Discrimination in Employment Act of 1967, as 
amended, and the related rules and regulations adopted by those Federal 
agencies responsible for the administration of such laws.  No act or failure 
to act by Contributor has resulted in a "prohibited transaction" (as defined 
in ERISA) with respect to the Contributor Plans.  No "reportable event" (as 
defined in ERISA) has occurred with respect to any of the Contributor Plans. 
Contributor has not previously made, is not currently making, and is not 
obligated in any way to make, any contributions to any multiemployer plan 
within the meaning of the Multi-Employer Pension Plan Amendments Act of 1980. 
 With respect to each Contributor Plan, either (i) the value of plan assets 
(including commitments under insurance contracts) is at least equal to the 
value of plan liabilities or (ii) the value of plan liabilities in excess of 
plan assets is disclosed on the Balance Sheet, all as of the Closing Date.

    2.22    ADVERSE AGREEMENTS.  Contributor is not, and will not be as of 
the Closing Date, a party to any agreement or instrument or subject to any 
charter or other corporate restriction or any judgment, order, writ, 
injunction, decree, rule or regulation that materially and adversely affects 
the condition (financial or otherwise), operations, assets, liabilities, 
business or prospects of Contributor, the Business or the Assets.

    2.23    COMPLIANCE WITH LAWS IN GENERAL.  Contributor, Shareholders and 
Contributor's licensed professional employees, and the conduct of the 
Business and use of the Assets, have complied with all applicable laws, 
rules, regulations and licensing requirements, including, without limitation, 
the Federal Environmental Protection Act, the Occupational Safety and Health 
Act, the Americans with Disabilities Act and any environmental laws and 
medical waste laws, and there exist no violations by Contributor, any 
Shareholder or any licensed professional employee of Contributor of any 
Federal, state or local law or regulation.  Contributor and Shareholders have 
not received any notice of a violation of any Federal, state and local laws, 
regulations and ordinances relating to the operations of the Business and 
Assets and no notice of any pending inspection or violation of any such law, 
regulation or ordinance has been received by Contributor. 

    2.24    THIRD PARTY PAYORS.   Contributor, Shareholders and each licensed 
professional employee or independent contractor of Contributor has timely 
filed all claims or other reports required to be filed with respect to the 
purchase of services by third-party payors, and all such claims or reports 
are complete and accurate, and has no liability to any payor with respect 
thereto.  There are no pending appeals, overpayment determinations, 
adjustments, challenges, audit, litigation or notices of intent to open 
Medicare or Medicaid claim determinations or other reports required to be 
filed by Contributor, any Shareholder and each licensed professional employee 
of Contributor.  Neither Contributor, nor any Shareholder, nor any licensed 
professional employee of Contributor has been convicted of, or pled guilty or 
nolo contendere to, patient abuse or negligence, or any other Medicare or 
Medicaid program related offense and none has committed any offense which may 
serve as the basis for suspension or exclusion from the Medicare and Medicaid 
programs or any other third party payor program.  With respect to payors, 
Contributor, Shareholders and Contributor's licensed professional employees 
has not (a) knowingly and willfully making or causing to be made a false 
statement or representation of a material fact in any application for any 
benefit or payment; (b) knowingly and willfully making or causing to be made 
any false statement or representation of a material fact for use in 
determining rights to any benefit or payment; (c) failed to disclose 
knowledge of the occurrence of any event affecting the initial or continued 
right to any benefit or payment on its own behalf or on behalf of another, 
with the intent to fraudulently secure such benefit or payment; and (d) 
violated any applicable state anti-remuneration or self-referral statutes, 
rules or regulations. 

    2.25    NO UNTRUE REPRESENTATIONS.  No representation or warranty by 
Contributor or Shareholders in this Agreement, and no Exhibit or certificate 
issued or executed by, or information furnished by, officers or directors of 
Contributor or any Shareholder and furnished or to be furnished to Pentegra 
pursuant hereto, or in connection with the transactions contemplated hereby, 
contains or will contain any untrue statement of a material fact, or omits or 
will omit to state a material fact necessary to make the statements or facts 
contained therein not misleading.

    2.26    BANKING RELATIONS.  Set forth in EXHIBIT 2.26 is a complete and 
accurate list of all arrangements that Contributor has with any bank or other 
financial institution, indicating with respect to each relationship the type 
of 

                                       8

<PAGE>

arrangement maintained (such as checking account, borrowing arrangements, 
safe deposit box, etc.) and the person or persons authorized in respect 
thereof.

    2.27    OWNERSHIP INTERESTS OF INTERESTED PERSONS; COMPETITORS.  No 
officer, employee, director or stockholder of Contributor, or their 
respective spouses, children or affiliates, owns directly or indirectly, on 
an individual or joint basis, any interest in, has a compensation or other 
financial arrangement with, or serves as an officer or director of, any 
customer or supplier or competitor of Contributor or any organization that 
has a material contract or arrangement with Contributor. 

    2.28    PAYORS.  EXHIBIT 2.28 sets forth a true, complete and correct 
list of the names and addresses of each payor of Contributor's services which 
accounted for more than 10% of revenues of Contributor in the preceding 
fiscal year.  Contributor has good relations with all such payors and other 
material payors of Contributor and none of such payors has notified 
Contributor that it intends to discontinue its relationship with Contributor 
or to deny any claims submitted to such payor for payment. 

SECTION 3.  REPRESENTATIONS AND WARRANTIES OF PENTEGRA.

    Pentegra hereby represents and warrants to Contributor and Shareholders 
as follows:

    3.1     CORPORATE EXISTENCE: GOOD STANDING.  Pentegra is a corporation 
duly organized and existing and in good standing under the laws of the State 
of Delaware. 

    3.2     POWER AND AUTHORITY; CONSENTS.  Pentegra has corporate power to 
execute, deliver and perform this Agreement and all agreements and other 
documents executed and delivered by it pursuant to this Agreement or to be 
executed and delivered on the Closing Date, and has taken all actions 
required by law, its Certificate of Incorporation, its Bylaws or otherwise, 
to authorize the execution, delivery and performance of this Agreement and 
such related documents.   This Agreement and all agreements and documents 
executed and delivered in connection herewith have been, or will be as of the 
Closing Date, duly executed and delivered by Pentegra and constitute or will 
constitute the legal, valid and binding obligations of Pentegra, enforceable 
against Pentegra in accordance with their respective terms, except as may be 
limited by applicable bankruptcy, insolvency or similar laws affecting 
creditors' rights generally or the availability of equitable remedies.  The 
execution and delivery of this Agreement, and the agreements executed and 
delivered pursuant to this Agreement or to be executed and delivered on the 
Closing Date, do not, and, the consummation of the actions contemplated 
hereby will not, violate any provision of the Certificate of Incorporation or 
Bylaws of Pentegra or any provisions of, or result in the acceleration of, 
any obligation under any mortgage, lien, lease, agreement, rent, instrument, 
order, arbitration award, judgment or decree to which Pentegra is a party or 
by which Pentegra is bound, or violate any material restrictions of any kind 
to which Pentegra is subject, or result in any lien or encumbrance on any of 
Pentegra's assets. Other than as have been obtained or as would not have a 
material adverse effect, there are no consents of any person or entity 
required for the transaction contemplated hereby on behalf of Pentegra.

    3.3     PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS.  All building 
or other permits, certificates of occupancy, concessions, grants, franchises, 
licenses, certificates of need and other governmental authorizations and 
approvals required for the conduct of the business of Penegra or waivers 
thereof, have been duly obtained and are in full force and effect, except as 
would not have a material adverse effect upon Pentegra.  Other than as would 
not have a material adverse effect, there are no proceedings pending or, to 
the knowledge of Pentegra, threatened, which may result in the revocation, 
cancellation or suspension, or any adverse modification, of any such licenses 
or permits. 
    
    3.4     LEGAL PROCEEDINGS.  Other than as would not have a material 
adverse effect, neither Pentegra nor its business or assets is subject to any 
pending, nor does Pentegra have knowledge of any threatened, litigation, 
governmental investigation, condemnation or other proceeding against or 
relating to or affecting Pentegra, its business, assets or the transactions 
contemplated by this Agreement, and, to the knowledge of Pentegra, no basis 
for any such action exists, nor is there any legal impediment of which 
Pentegra has knowledge to the continued operation of its business or the use 
of its Assets in the ordinary course. 

                                       9

<PAGE>

    3.5     TAXES.  Pentegra has filed all tax returns (including tax reports 
and other statements) required to have been filed by it, and has paid all 
taxes (including any interest, penalty or additions thereto) required to have 
been paid by it, other than as would not have a material adverse effect.  
Pentegra has not received any notice that any tax deficiency or delinquency 
has been  or may be asserted against Pentegra.  There are no audits relating 
to taxes of Pentegra pending or in process or, to the knowledge of  Pentegra, 
threatened. Pentegra is not currently the beneficiary of any waiver of any 
statute of limitations in respect of taxes nor of any extension of time 
within which to file any tax return or to pay any tax assessment or 
deficiency. 

    3.6     COMMISSIONS AND FEES.  Pentegra has not incurred any obligation 
for any finder's, broker's or similar fees in connection with the 
transactions contemplated hereby.

    3.7     CAPITAL STOCK.  The issuance and delivery by Pentegra of shares 
of Pentegra Common Stock in connection with the acquisition contemplated 
hereby will be as of the Closing Date duly and validly authorized by all 
necessary corporate action on the part of Pentegra.  The Pentegra Common 
Stock to be issued in connection with the acquisition contemplated hereby, 
when issued in accordance with the terms of this Agreement, will be validly 
issued, fully paid and nonassessable.  

    3.8     NO UNTRUE REPRESENTATIONS.  No representation or warranty by 
Pentegra in this Agreement, and no Exhibit or certificate issued by officers 
or directors of Pentegra and furnished or to be furnished to Contributor  or 
any Shareholder pursuant hereto, or in connection with the transactions 
contemplated hereby, contains or will contain any untrue statement of a 
material fact, or omits or will omit to state a material fact necessary to 
make the statements or facts contained therein not misleading.

SECTION 4.  COVENANTS OF CONTRIBUTOR AND SHAREHOLDERS.

    Contributor and Shareholders, jointly and severally, agree that between 
the date hereof and the Closing Date:

    4.1     CONSUMMATION OF AGREEMENT; EXHIBITS.  Contributor and 
Shareholders shall use their best efforts to cause the consummation of the 
transactions contemplated hereby in accordance with their terms and 
conditions.  Contributor and Shareholders agree to complete the Exhibits 
hereto to be provided by them in form and substance satisfactory to Pentegra.

    4.2     BUSINESS OPERATIONS.  Contributor and Shareholders shall operate 
the Business and use the Assets in the ordinary course.  Contributor and 
Shareholders shall not enter into any lease, contract, indebtedness, 
commitment, purchase or sale or acquire or dispose of any capital asset 
relating to the Business or the Assets except in the ordinary course of 
business.  Contributor and Shareholders shall use their best efforts to 
preserve the Business and Assets intact and shall not take any action that 
would have an adverse effect on the Business or Assets.  Contributor and 
Shareholders shall use their best efforts to preserve intact the 
relationships with payors, customers, suppliers, patients and others having 
significant business relations with Contributor. Contributor and Shareholders 
shall collect its receivables and pay its trade payables in the ordinary 
course of business.  Contributor and Shareholdes shall not introduce any new 
method of management, operations or accounting. 

    4.3     ACCESS AND NOTICE.  Contributor and Shareholders shall permit 
Pentegra and its authorized representatives access to, and make available for 
inspection, all of the assets and business of Contributor, the Business and 
the Assets, including employees, customers and suppliers and permit Pentegra 
and its authorized representatives to inspect and make copies of all 
documents, records and information with respect to the business or assets of 
Contributor, the Business or the Assets as Pentegra or its representatives 
may request. Contributor and Shareholders shall promptly notify Pentegra in 
writing of (a) any notice or communication relating to a default or event 
that, with notice or lapse of time or both, could become a default, under any 
contract, commitment or obligation to which Contributor is a party or 
relating to the Business or the Assets, and (b) any adverse change in 
Contributor's or the Business' financial condition or the Assets.

                                       10

<PAGE>

    4.4     APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS.  Contributor 
and Shareholders shall use their best efforts to secure all necessary 
approvals and consents of third parties to the consummation of the 
transactions contemplated hereby, including consents described on EXHIBIT 
2.4.  Contributor and Shareholders shall use their best efforts to obtain all 
licenses, permits, approvals or other authorizations required under any law, 
rule, regulation, or otherwise to provide the services of Contributor 
contemplated by the Service Agreement and to conduct the intended business of 
Contributor and operate the Business and use the Assets.

    4.5     ACQUISITION PROPOSALS.  From the execution of this Agreement 
until the earlier of Closing or the termination of this Agreement in 
accordance with the provisions hereof, Contributor and Shareholders shall 
not, and shall use its best efforts to cause Contributor's employees, agents 
and representatives not to, initiate, solicit or encourage, directly or 
indirectly, any inquiries or the making or implementation of any proposal or 
offer, including without limitation, any proposal or offer to any 
Shareholder, with respect to a merger, acquisition, consolidation or similar 
transaction involving, or the purchase of all or any significant portion of 
the assets or any equity securities of Contributor or engage in any 
negotiations concerning, or provide any confidential information or data to, 
or have any discussions with, any person relating to such proposal or offer, 
and Contributor and Shareholders will immediately cease any such activities, 
discussions or negotiations heretofore conducted with respect to any of the 
foregoing.  Contributor and Shareholders shall immediately notify Pentegra if 
any such inquiries or proposals are received.

    4.6     FUNDING OF ACCRUED EMPLOYEE BENEFITS.  Contributor hereby 
covenants and agrees that it will take whatever steps are necessary to pay or 
fund completely for any accrued benefits, where applicable, or vested accrued 
benefits for which Contributor or any entity might have any liability 
whatsoever arising from any insurance, pension plan,  employment tax or 
similar liability of Contributor to any employee or other person or entity 
(including, without limitation, any Contributor Plan and any liability under 
employment contracts with Contributor) allocable to services performed prior 
to the Closing Date. Contributor and Shareholders acknowledge that the 
purpose and intent of this covenant is to assure that Pentegra shall have no 
unfunded liability whatsoever at any time after the Closing Date with respect 
to any of Contributor's employees or similar persons or entities, including, 
without limitation, any Contributor Plan for the period prior to the Closing 
Date.

    4.7     EMPLOYEE MATTERS.  Contributor shall not, without the prior 
written approval of Pentegra, except as required by law, increase the cash 
compensation of any Shareholder (other than in the ordinary course of 
business) or other employee or an independent contractor of Contributor, 
adopt, amend or terminate any compensation plan, employment agreement, 
independent contractor agreement, employee policies and procedures or 
employee benefit plan, take any action that could deplete the assets of any 
employee benefit, or fail to pay any premium or contribution due or file any 
report with respect to any employee benefit plan, or take any other actions 
with respect to its employees or employee matters which might have an adverse 
effect upon Contributor, its business, assets or prospects.

    4.8     DISTRIBUTIONS AND REPURCHASES.  No distribution, payment or 
dividend of any kind will be declared or paid by Contributor, nor will any 
repurchase of any of Contributor's capital stock be approved or effected.

    4.9     REQUIREMENTS TO EFFECT ACQUISITION.  Contributor and Shareholders 
shall use their best efforts to take, or cause to be taken, all actions 
necessary to effect the acquisition contemplated hereby under applicable law. 

    4.10    ACCOUNTING AND TAX MATTERS.  Contributor and Shareholders will 
not change in any material respect the tax or financial accounting methods or 
practices followed by Contributor (including any material change in any 
assumption underlying, or any method of calculating, any bad debt, 
contingency or other reserve), except as may be required by law or  generally 
accepted accounting principles.  Contributor and Shareholders will duly, 
accurately and timely (without regard to any extensions of time) file all 
returns, information statements and other documents relating to taxes of 
Contributor required to be filed by it, and pay all taxes required to be paid 
by it, on or before the Closing Date.

    4.11    WAIVER OF BULK TRANSFER COMPLIANCE.  Pentegra, Shareholders and 
Contributor hereby waive any compliance with the applicable state Bulk 
Transfers Act, if any.   Contributor and Shareholders covenant and agree that 
all of the creditors with respect to the Business and the Assets will be paid 
in full by Contributor prior to the Closing Date, except to extent that any 
liability to such creditors is assumed by Pentegra pursuant to this 
Agreement.  If required 

                                       11

<PAGE>

by Pentegra, Contributor and Shareholders  shall furnish Pentegra with proof 
of payment of all creditors with respect to the Business and the Assets. 
Notwithstanding the foregoing, Contributor and Shareholders may dispute the 
validity or amount of any such creditor's claim without being deemed to be in 
violation of this SECTION 4.11, provided that such dispute is in good faith 
and does not unreasonably delay the resolution of the claim and provided, 
further that Contributor and Shareholders agree to indemnify and bond 
Pentegra for such amounts as is satisfactory to Pentegra. 

    4.12    LEASE.  If Contributor leases any of its premises from any 
Shareholder or other affiliate of Contributor or any shareholder of 
Contributor, Pentegra shall have entered into a building lease (the "Building 
Lease") with the owner of such premises on terms and conditions satisfactory 
to Pentegra, the terms and conditions of which shall include, without 
limitation, (i) a five year initial term plus three five-year renewal 
options, (ii) a lease rate equal to the fair market value lease rate, as 
agreed to by Pentegra, and (iii) such other provisions to be acceptable to 
Pentegra.

    4.13    HIRING OF EMPLOYEES.  Contributor and Shareholders shall 
cooperate with all requests made by Pentegra for the purpose of allowing 
Pentegra to hire those non-dental employees of Contributor designated by 
Pentegra, such employment to be effective as of the Closing Date.  
Notwithstanding the above, Contributor and Shareholders shall remain liable 
under any Contributor Plans for any claims incurred by any employees or their 
spouses or dependents, and for all compensation, bonuses, benefits and other 
such items and other liabilities related to Contributor's employees incurred 
by Contributor prior to the Closing Date.  

    4.14    EMPLOYEE BENEFIT PLANS.  Contributor agrees and acknowledges that 
all employees of Contributor hired by Pentegra pursuant to SECTION 4.13  
above, shall be treated as "leased employees" (as defined in Code Section 
414(n)) of Contributor and shall be treated as Clinic employees for purposes 
of eligibility and participation in Contributor Plans. 

    4.15    INSURANCE.  Contributor shall cause Pentegra and its affiliates 
to be named as an additional insured on its liability insurance programs, 
effective as of the Closing Date. 

SECTION 5.  COVENANTS OF PENTEGRA. 

    Pentegra agrees that between the date hereof and the Closing: 

    5.1     CONSUMMATION OF AGREEMENT; EXHIBITS.  Pentegra shall use its best 
efforts to cause the consummation of the transactions contemplated hereby in 
accordance with their terms and provisions.   Pentegra agrees to complete the 
Exhibits hereto to be provided by it. 

    5.2     APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS.  Pentegra 
shall use its best efforts to secure all necessary approvals and consents of 
third parties to the consummation of the transactions contemplated hereby. 

SECTION 6.  COVENANTS OF PENTEGRA AND CONTRIBUTOR AND SHAREHOLDERS. 

    Pentegra, Shareholders  and Contributor agree as follows: 

    6.1     FILINGS; OTHER ACTIONS.   Pentegra, Contributor and Shareholders 
shall cooperate to promptly prepare and file with the Securities Exchange 
Commission ("SEC")  the Registration Statement on Form S-1 (or other 
appropriate Form) to be filed by Pentegra in connection with its Initial 
Public Offering (including the prospectus constituting a part thereof, the 
"Registration Statement").  Pentegra shall obtain all necessary state 
securities laws or "Blue Sky" permits and approvals required to carry out the 
transactions contemplated by this Agreement and the Contributor and 
Shareholders shall furnish all information concerning Contributor and 
Shareholders as may be reasonable requested in connection with any such 
action.

    Contributor and Shareholder represent and warrant that none of the 
information or documents supplied or to be supplied by it specifically for 
inclusion in the Registration Statement, by exhibit or otherwise, will, at 
the time the 

                                       12

<PAGE>

Registration Statement and each amendment or supplement thereto, if any, 
becomes effective under the Securities Act of 1933, contain any untrue 
statement of a material fact or omit to state any material fact required to 
be stated therein or necessary to make the statements therein, in light of 
the circumstances under which they were made, not misleading.  Contributor 
and Shareholders shall be entitled to review the Registration Statement and 
each amendment thereto, if any, prior to the time each becomes effective 
under the Securities Act of 1933.

    Contributor and Shareholders shall furnish Pentegra will all information 
concerning themselves, their subsidiaries, if any, directors, officers and 
stockholders and such other matters as may be reasonable requested by 
Pentegra in connection with the preparation of the Registration Statement and 
each amendment or supplement thereto, or any other statement, filing, notice 
or application made by or on behalf of each such party or any of its 
subsidiaries to any governmental entity in connection with the transactions 
contemplated by the Other Agreements or this Agreement.

SECTION 7.  PENTEGRA CONDITIONS PRECEDENT.

    The obligations of Pentegra hereunder are subject to the fulfillment at 
or prior to the Closing of each of the following conditions:

    7.1     REPRESENTATIONS AND WARRANTIES.  The representations and 
warranties of Contributor and Shareholders contained herein shall have been 
true and correct in all respects when initially made and shall be true and 
correct in all respects as of the Closing Date. 

    7.2     COVENANTS AND CONDITIONS.  Contributor and Shareholders shall 
have performed and complied with all covenants and conditions required by 
this Agreement to be performed and complied with by Contributor and 
Shareholders prior to the Closing Date.

    7.3     PROCEEDINGS.  No action, proceeding or order by any court or 
governmental body shall have been threatened orally or in writing, asserted, 
instituted or entered to restrain or prohibit the carrying out of the 
transactions contemplated hereby.

    7.4     NO MATERIAL ADVERSE CHANGE.  No material adverse change in the 
condition (financial or otherwise), operations, assets, liabilities, business 
or prospects of Contributor shall have occurred since the Balance Sheet Date.

    7.5     DUE DILIGENCE REVIEW.  By the Closing Date, Pentegra shall have 
completed a due diligence review of the business, operations and financial 
statements of Contributor, the Business and the Assets, the results of which 
shall be satisfactory to Pentegra in its sole discretion. 

    7.6     APPROVAL BY THE BOARD OF DIRECTORS.  This Agreement and the 
transactions contemplated hereby shall have been approved by the Board of 
Directors of Pentegra or a committee thereof. 

    7.7     SERVICE AGREEMENT; GUARANTY AGREEMENT.  Contributor and Pentegra 
shall have executed and delivered a Service Agreement (the "Service 
Agreement"), in substantially the form attached hereto as EXHIBIT 7.7, 
pursuant to which Pentegra will provide management services to the 
Contributor.  Each Shareholder shall have executed and delivered a Guaranty 
Agreement in substantially the form attached as EXHIBIT 4.10 of the Service 
Agreement pursuant to which Shareholder shall, among other things, guaranty 
the obligations of Contributor under the Service Agreement. 

    7.8     EMPLOYMENT ARRANGEMENTS.  Contributor shall have terminated, and 
caused each shareholder of Contributor that has an existing employment 
agreement with Contributor to have terminated his or her employment agreement 
with Contributor and shall have executed an employment agreement ("Employment 
Agreement") with Contributor in form and substance attached hereto as EXHIBIT 
7.8 and otherwise satisfactory to Contributor and Pentegra. 

    7.9     CONSENTS AND APPROVALS.  Contributor and Shareholders shall have 
obtained all necessary government and other third-party approvals and 
consents.

                                       13

<PAGE>

    7.10    CLOSING DELIVERIES.  Pentegra shall have received all documents, 
duly executed in form satisfactory to Pentegra and its counsel, referred to 
in SECTION 9.1.

    7.11    DEBT AND RECEIVABLES.  There shall be no indebtedness, 
receivables or payables between Contributor and its shareholders or 
affiliates and Contributor shall not have any liabilities, including 
indebtedness, guaranties and capital leases, that are not set forth on 
EXHIBIT 2.19. 

    7.12    INSURANCE.  Contributor and Shareholders shall have named 
Pentegra as an additional insured on their liability insurance program in 
accordance with SECTION 4.15.

    7.13    NO CHANGE IN WORKING CAPITAL.  There shall have been no material 
change in the working capital of Contributor since the Balance Sheet Date. 

    7.14    SECURITIES APPROVAL.  The Registration Statement shall have 
become effective under the Securities Act and no stop order suspending the 
effectiveness of the Registration Statement shall have been issued and no 
proceedings for that purpose shall have been initiated or threatened by the 
SEC. At or prior to the date that the Registration Statement is declared 
effective by the SEC, Pentegra shall have received all state securities and 
"Blue Sky" permits necessary to consummate the transactions contemplated 
hereby.  The Pentegra Common Stock shall have been approved for listing on 
Nasdaq or other exchange selected by Pentegra, subject only to official 
notification of issuance.  

SECTION 8.  CONTRIBUTOR'S AND SHAREHOLDERS' CONDITIONS PRECEDENT.

    The obligations of Contributor and Shareholders hereunder are subject to 
fulfillment at or prior to the Closing of each of the following conditions:

    8.1     REPRESENTATIONS AND WARRANTIES.  The representations and 
warranties of Pentegra contained herein shall have been true and correct in 
all respects when initially made and shall be true and correct in all 
respects as of the Closing Date.

    8.2     COVENANTS AND CONDITIONS.  Pentegra shall have performed and 
complied with all covenants and conditions required by this Agreement to be 
performed and complied with by Pentegra prior to the Closing Date.

    8.3     PROCEEDINGS.  No action, proceeding or order by any court or 
governmental body shall have been threatened orally or in writing, asserted, 
instituted or entered to restrain or prohibit the carrying out of the 
transactions contemplated hereby.

    8.4     CLOSING DELIVERIES.  Contributor shall have received all 
documents, duly executed in form satisfactory to Contributor and its counsel, 
referred to in SECTION 9.2.

    8.5     SECURITIES APPROVAL.  The Registration Statement shall have 
become effective under the Securities Act and no stop order suspending the 
effectiveness of the Registration Statement shall have been issued and no 
proceedings for that purpose shall have been initiated or threatened by the 
SEC. At or prior to the date that the Registration Statement is declared 
effective by the SEC, Pentegra shall have received all state securities and 
"Blue Sky" permits necessary to consummate the transactions contemplated 
hereby.  The Pentegra Common Stock shall have been approved for listing on 
Nasdaq or other exchange selected by Pentegra, subject only to official 
notification of issuance.

                                       14

<PAGE>

SECTION 9.  CLOSING DELIVERIES.

    9.1     DELIVERIES OF CONTRIBUTOR AND SHAREHOLDERS. Within five business 
days after requested by Pentegra, Contributor and Shareholders shall deliver 
to Pentegra the following, all of which shall be in a form satisfactory to 
counsel to Pentegra and shall be held by Jackson & Walker, L.L.P. (counsel 
for Pentegra) in escrow pending Closing, pursuant to an escrow agreement or 
letter agreement in form and substance mutually acceptable to the parties 
hereto:

            (a)    an executed original Service Agreement and executed 
originals of all documents required by that agreement, including but not 
limited to the Guaranty Agreement and security agreement referred to therein;

            (b)    executed Employment Agreements; 
    
            (c)    a copy of the resolutions of the Board of Directors of 
Contributor authorizing the execution, delivery and performance of this 
Agreement, the Service Agreement, the Employment Agreements and all related 
documents and agreements each certified by the Secretary as being true and 
correct copies of the original thereof;

            (d)    a bill of sale conveying the Assets to Pentegra; 

            (e)    an assignment of each contract, agreement and lease being 
assigned to and assumed by Pentegra;  

            (f)    certificates of the Shareholders and a duly authorized 
officer of Contributor dated as of the Closing Date, (i) as to the truth and 
correctness of the representations and warranties of Contributor and 
Shareholder contained herein; (ii) as to the performance of and compliance by 
Contributor and Shareholder with all covenants contained herein; and (iii) 
certifying that all conditions precedent of Contributor and Shareholders to 
the Closing have been satisfied;

            (g)    a certificate of the Secretary of Contributor certifying 
as to the incumbency of the directors and officers of Contributor and as to 
the signatures of such directors and officers who have executed documents 
delivered at the Closing on behalf of Contributor;

            (h)    a certificate, dated within 30 days of the Closing Date, 
of the Secretary of the State of incorporation of Contributor and any state 
of required foreign qualification of Contributor establishing that 
Contributor is in existence and is in good standing to transact business in 
its state of incorporation; 

            (i)    an opinion of counsel to Contributor and Shareholder 
opining as to the execution and delivery of this Agreement and the other 
documents and agreements to be executed pursuant hereto, the good standing 
and authority of Contributor, the enforceability of this Agreement and the 
other agreements and documents to be executed in connection herewith, and 
other matters reasonably requested by Pentegra; 
    
            (j)    non-foreign affidavits executed by Contributor; 

            (k)    all authorizations, consents, approvals, permits and 
licenses referred to in SECTIONS 2.3 and 2.4; 

            (l)    an executed Registration Rights Agreement between Pentegra 
and Contributor, in substantially the form attached hereto as EXHIBIT 9.1(l) 
(the "Registration Rights Agreement"); and

            (m)    such other instruments and documents as reasonably 
requested by Pentegra to carry out and effect the purpose and intent of this 
Agreement.

                                       15

<PAGE>

    9.2     DELIVERIES OF PENTEGRA. On or before the Closing Date, Pentegra 
shall deliver to Contributor and Shareholder, the following, all of which 
shall be in a form satisfactory to counsel to Contributor and Shareholders 
and shall be held by Jackson & Walker, L.L.P. (counsel for Pentegra) in 
escrow pending Closing, pursuant to an escrow agreement or letter agreement 
in form and substance mutually acceptable to the parties hereto:

            (a)    the Acquisition Consideration;

            (b)    an executed Service Agreement;

            (c)    an assumption of each contract, agreement and lease being 
assigned to and assumed by Pentegra; 

            (d)    a copy of the resolutions of the Board of Directors of 
Pentegra (or a committee thereof) authorizing the execution, delivery and 
performance of this Agreement and all related documents and agreements each 
certified by the Secretary as being true and correct copies of the original 
thereof;

            (e)    certificates of the President of Pentegra, dated as of the 
Closing Date, (i) as to the truth and correctness of the representations and 
warranties of Pentegra contained herein; (ii) as to the performance of and 
compliance by Pentegra with all covenants contained herein; and (iii) 
certifying that all conditions precedent of Pentegra to the Closing have been 
satisfied; 

            (f)    a certificate of the Secretary of Pentegra certifying as 
to the incumbency of the directors and officers of Pentegra and as to the 
signatures of such directors and officers who have executed documents 
delivered at the Closing on behalf of Pentegra; 

            (g)    certificates, dated within 30 days of the Closing Date, of 
the Secretary of the State of Delaware establishing that Pentegra is in 
existence and are in good standing to transact business in the State of 
Delaware and the State of incorporation of Contributor; 

            (h)    an opinion of counsel to Pentegra opining as to the 
execution and delivery of this Agreement and the other documents and 
agreements to be executed pursuant hereto, the good standing and authority of 
Pentegra, the enforceability of this Agreement and the other agreements and 
documents to be executed in connection herewith, and other matters reasonably 
requested by Contributor; 

            (i)    the executed Registration Rights Agreement; and

            (j)    such other instruments and documents as reasonably 
requested by Contributor to carry out and effect the purpose and intent of 
this Agreement. 

SECTION 10. NATURE AND SURVIVAL OF REPRESENTATIONS AND WARRANTIES; 
            INDEMNIFICATION.

    10.1    NATURE AND SURVIVAL.  All statements contained in this Agreement 
or in any Exhibit attached hereto, any agreement executed pursuant hereto, 
and any certificate executed and delivered by any party pursuant to the terms 
of this Agreement, shall constitute representations and warranties of 
Contributor and Shareholders, jointly and severally, or of Pentegra, as the 
case may be.  All such representations and warranties, and all 
representations and warranties expressly labeled as such in this Agreement 
shall survive the date of this Agreement and the Closing Date for a period of 
five (5) years following the Closing Date, except that (i) the 
representations and warranties with respect to environmental and medical 
waste laws and health care laws and matters shall survive for a period of 
fifteen (15) years and tax representations shall survive until one year after 
the expiration of the applicable statute of limitations. Each party covenants 
with the other parties not to make any claim with respect to such 
representations and warranties, against any party after the date on which 
such survival period shall terminate.  No party shall be entitled to claim 
indemnity from any other party pursuant to SECTION 10.2 or 10.3 hereof, 
unless such party has timely given the notice required in SECTION 10.2, 10.3 
or 10.4 hereof, as the case may be.  Each party hereby releases, acquits and 
discharges the other party 
                                       16

<PAGE>

from any and all claims and demands, actions and causes of action, damages, 
costs, expenses and rights of setoff with respect to which the notices 
required by SECTION 10.2, 10.3 or 10.4, as applicable, are not timely 
provided.

    10.2    INDEMNIFICATION BY PENTEGRA.  PENTEGRA (FOR PURPOSES OF THIS 
SECTION 10.2 AND, TO THE EXTENT APPLICABLE, SECTION 10.4, "INDEMNITOR"), 
SHALL INDEMNIFY AND HOLD CONTRIBUTOR AND ITS SHAREHOLDERS, AGENTS AND 
EMPLOYEES (EACH OF THE FOREGOING, INCLUDING CONTRIBUTOR AND SHAREHOLDERS, FOR 
PURPOSES OF THIS SECTION 10.2 AND, TO THE EXTENT APPLICABLE, SECTION 10.4, AN 
"INDEMNIFIED PERSON"), HARMLESS FROM AND AGAINST ANY AND ALL LIABILITIES, 
LOSSES, DAMAGES, ACTIONS, SUITS, COSTS, DEFICIENCIES AND EXPENSES (INCLUDING, 
BUT NOT LIMITED TO, REASONABLE FEES AND DISBURSEMENTS OF COUNSEL THROUGH 
APPEAL) ARISING FROM OR BY REASON OF OR RESULTING FROM:

    (A)      ANY BREACH BY INDEMNITOR OF ANY REPRESENTATION, WARRANTY, 
AGREEMENT OR COVENANT CONTAINED IN THIS AGREEMENT (INCLUDING THE EXHIBITS 
HERETO) AND EACH DOCUMENT, CERTIFICATE OR OTHER INSTRUMENT FURNISHED OR TO BE 
FURNISHED BY INDEMNITOR HEREUNDER, AND 

    (B)     AFTER THE CLOSING DATE, INDEMNITOR'S OWNERSHIP OF THE ASSETS, AND

    (C)     ANY LIABILITY UNDER THE SECURITIES ACT, THE EXCHANGE ACT OR ANY 
OTHER FEDERAL OR STATE "BLUE SKY" OR SECURITIES LAWS OR REGULATION, AT COMMON 
LAW OR OTHERWISE, ARISING OUT OF OR BASED UPON ANY UNTRUE STATEMENT OR 
ALLEGED UNTRUE STATEMENT OF A MATERIAL FACT RELATING TO PENTEGRA CONTAINED IN 
ANY PRELIMINARY PROSPECTUS, THE REGISTRATION STATEMENT OR ANY PROSPECTUS 
FORMING A PART THEREOF, OR ANY AMENDMENT THEREOF OR SUPPLEMENT THERETO, 
ARISING OUT OF OR BASED UPON ANY OMISSION OR ALLEGED OMISSION TO STATE 
THEREIN A MATERIAL FACT RELATING TO PENTEGRA REQUIRED TO BE STATED THEREIN OR 
NECESSARY TO MAKE THE STATEMENTS THEREIN NOT MISLEADING.
 
IN CONNECTION WITH INDEMNITOR'S OBLIGATION TO INDEMNIFY FOR EXPENSES, 
INDEMNITOR SHALL REIMBURSE EACH INDEMNIFIED PERSON FOR ALL SUCH EXPENSES AS 
THEY ARE INCURRED BY SUCH INDEMNIFIED PERSON, PROVIDED THAT SUCH INDEMNIFIED 
PERSON AGREES IN WRITING TO REFUND ALL SUCH REIMBURSED EXPENSES IF AND TO THE 
EXTENT THAT IT IS FINALLY JUDICIALLY DETERMINED THAT SUCH INDEMNIFIED PERSON 
IS NOT ENTITLED TO INDEMNIFICATION HEREUNDER.

    10.3    INDEMNIFICATION BY CONTRIBUTOR AND SHAREHOLDERS.  CONTRIBUTOR AND 
SHAREHOLDERS (FOR PURPOSES OF THIS SECTION 10.3 AND, TO THE EXTENT 
APPLICABLE, SECTION 10.4, "INDEMNITOR"), JOINTLY AND SEVERALLY, SHALL 
INDEMNIFY AND HOLD PENTEGRA AND ITS AFFILIATES, OFFICERS, DIRECTORS, 
SHAREHOLDERS, AGENTS AND EMPLOYEES (EACH OF THE FOREGOING, INCLUDING 
PENTEGRA, FOR PURPOSES OF THIS SECTION 10.3 AND, TO THE EXTENT APPLICABLE, 
SECTION 10.4, AN "INDEMNIFIED PERSON") HARMLESS FROM AND AGAINST ANY AND ALL 
LIABILITIES, LOSSES, CLAIMS, DAMAGES, ACTIONS, SUITS, COSTS, DEFICIENCIES AND 
EXPENSES (INCLUDING, BUT NOT LIMITED TO, REASONABLE FEES AND DISBURSEMENTS OF 
COUNSEL THROUGH APPEAL) ARISING FROM OR BY REASON OF OR RESULTING FROM OR 
WITH RESPECT TO:

    (A)      ANY BREACH BY INDEMNITOR OF ANY REPRESENTATION, WARRANTY, 
AGREEMENT OR COVENANT CONTAINED IN THIS AGREEMENT (INCLUDING THE EXHIBITS 
HERETO) AND EACH DOCUMENT, CERTIFICATE, OR OTHER INSTRUMENT FURNISHED OR TO 
BE FURNISHED BY INDEMNITOR HEREUNDER, AND 

    (B)     PRIOR TO AND AFTER THE CLOSING DATE, THE INDEMNITOR'S MANAGEMENT 
AND CONDUCT OF THE BUSINESS AND OWNERSHIP OR OPERATION OF THE ASSETS, 

                                       17

<PAGE>

    (C)     ANY ALLEGED ACT OR NEGLIGENCE OF INDEMNITOR OR ITS EMPLOYEES, 
AGENTS AND INDEPENDENT CONTRACTORS IN OR ABOUT CONTRIBUTOR'S BUSINESS WHETHER 
ON OR AFTER THE CLOSING DATE,

    (D)     ANY VIOLATION BY CONTRIBUTOR OR ITS SHAREHOLDERS OR THEIR 
CONSULTANTS, OFFICERS, DIRECTORS, EMPLOYEES, AGENTS AND AFFILIATES OF STATE 
OR FEDERAL LAWS GOVERNING HEALTHCARE FRAUD AND ABUSE, OR ANY OVERPAYMENT OR 
OBLIGATION ARISING OUT OF OR RESULTING FROM ACTIONS OF THE CONTRIBUTOR OR 
SHAREHOLDERS RELATING TO CLAIMS SUBMITTED TO ANY THIRD PARTY PAYOR, WHETHER 
ON OR AFTER THE CLOSING DATE, 

    (E)     TAXES OF CONTRIBUTOR OR ANY SHAREHOLDER OR ANY OTHER PERSON OR 
ENTITY RELATED TO OR AFFILIATED WITH THE CONTRIBUTOR OR SHAREHOLDER ARISING 
FROM OR AS A RESULT OF THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT, 
    
    (F)     ANY LIABILITY OF CONTRIBUTOR OR THE SHAREHOLDERS FOR COSTS AND 
EXPENSES (INCLUDING, WITHOUT LIMITATION, ATTORNEYS' FEES) INCURRED IN 
CONNECTION WITH THE NEGOTIATION, PREPARATION OF CLOSING OF THE TRANSACTIONS 
CONTEMPLATED BY THIS AGREEMENT OR THE OTHER DOCUMENTS TO BE EXECUTED IN 
CONNECTION HEREWITH,

    (G)     ANY ACCRUED UNFUNDED RETIREMENT OR PENSION PLAN LIABILITIES, 

    (H)     ANY LIABILITIES THAT ARE  NOT SET FORTH ON EXHIBIT 1.3(b), OR

    (I)     ANY LIABILITY UNDER THE SECURITIES ACT, THE EXCHANGE ACT OR ANY 
OTHER FEDERAL OR STATE "BLUE SKY" OR SECURITIES LAWS OR REGULATION, AT COMMON 
LAW OR OTHERWISE, ARISING OUT OF OR BASED UPON ANY UNTRUE STATEMENT OR 
ALLEGED UNTRUE STATEMENT OF A MATERIAL FACT RELATING TO CONTRIBUTOR OR ITS 
SHAREHOLDERS AND PROVIDED TO PENTEGRA OR ITS COUNSEL BY THE CONTRIBUTOR OR 
ITS SHAREHOLDERS SPECIFICALLY FOR INCLUSION IN ANY PRELIMINARY PROSPECTUS, 
THE REGISTRATION STATEMENT OR ANY PROSPECTUS FORMING A PART THEREOF, OR ANY 
AMENDMENT THEREOF OR SUPPLEMENT THERETO, ARISING OUT OF OR BASED UPON ANY 
OMISSION OR ALLEGED OMISSION TO STATE THEREIN A MATERIAL FACT RELATING TO 
CONTRIBUTOR OR ITS SHAREHOLDERS REQUIRED TO BE STATED THEREIN OR NECESSARY TO 
MAKE THE STATEMENTS THEREIN NOT MISLEADING.
   
IN CONNECTION WITH INDEMNITOR'S OBLIGATION TO INDEMNIFY FOR EXPENSES, 
INDEMNITOR SHALL REIMBURSE EACH INDEMNIFIED PERSON FOR ALL SUCH EXPENSES AS 
THEY ARE INCURRED BY SUCH INDEMNIFIED PERSON, PROVIDED THAT SUCH INDEMNIFIED 
PERSON AGREES IN WRITING TO REFUND ALL SUCH REIMBURSED EXPENSES IF AND TO THE 
EXTENT THAT IT IS FINALLY JUDICIALLY DETERMINED THAT SUCH INDEMNIFIED PERSON 
IS NOT ENTITLED TO INDEMNIFICATION HEREUNDER.

    10.4    INDEMNIFICATION PROCEDURE.  Within sixty (60) days after 
Indemnified Person receives written notice of the commencement of any action 
or other proceeding in respect of which indemnification or reimbursement may 
be sought hereunder, or within such lesser time as may be provided by law for 
the defense of such action or proceeding, such Indemnified Person shall 
notify Indemnitor thereof.  If any such action or other proceeding shall be 
brought against any Indemnified Person, Indemnitor shall, upon written notice 
given within a reasonable time following receipt by Indemnitor of such notice 
from Indemnified Person, be entitled to assume the defense of such action or 
proceeding with counsel chosen by Indemnitor and reasonably satisfactory to 
Indemnified Person; provided, however, that any Indemnified Person may at its 
own expense retain separate counsel to participate in such defense. 
Notwithstanding the foregoing, Indemnified Person shall have the right to 
employ separate counsel at Indemnitor's expense and to control its own 
defense of such action or proceeding if, in the reasonable opinion of counsel 
to such Indemnified Person, (a) there are or may be legal defenses available 
to such Indemnified Person or to other Indemnified Persons that are different 
from or additional to those available to Indemnitor and which could not be 
adequately advanced by counsel chosen by Indemnitor, or (b) a conflict or 
potential conflict exists between Indemnitor and such Indemnified Person that 

                                       18

<PAGE>

would make such separate representation advisable; provided, however, that in 
no event shall Indemnitor be required to pay fees and expenses hereunder for 
more than one firm of attorneys of Indemnified Person in any jurisdiction in 
any one action or proceeding or group of related actions or proceedings.  
Indemnitor shall not, without the prior written consent of any Indemnified 
Person, settle or compromise or consent to the entry of any judgment in any 
pending or threatened claim, action or proceeding to which such Indemnified 
Person is a party unless such settlement, compromise or consent includes an 
unconditional release of such Indemnified Person from all liability arising 
or potentially arising from or by reason of such claim, action or proceeding.

    10.5    RIGHT OF SETOFF.  In the event of any breach of warranty, 
representation, covenant or agreement by Contributor or any Shareholder 
giving rise to indemnification under SECTION 10.3 or SECTION 10.4 hereof, 
Pentegra shall be entitled to offset the amount of damages incurred by it as 
a result of such breach of warranty, representation, covenant or agreement 
against any amounts payable by Pentegra, including the amounts payable under 
the Service Agreement.  

SECTION 11. TERMINATION.  This Agreement may be terminated:

    (a)     at any time by mutual agreement of all parties;

    (b)     at any time by Pentegra if any representation or warranty of 
Contributor or Shareholder contained in this Agreement or in any certificate 
or other document executed and delivered by Contributor or any Shareholder 
pursuant to this Agreement is or becomes untrue or breached in any material 
respect or if Contributor or any Shareholder fails to comply in any material 
respect with any covenant or agreement contained herein, and any such 
misrepresentation, noncompliance or breach is not cured, waived or eliminated 
within twenty (20) days after receipt of written notice thereof;

    (c)     at any time by Contributor or any Shareholder if any 
representation or warranty of Pentegra contained in this Agreement or in any 
certificate or other document executed and delivered by Pentegra pursuant to 
this Agreement is or becomes untrue or breached in any material respect or if 
Pentegra fails to comply in any material respect with any covenant or 
agreement contained herein and such misrepresentation, noncompliance or 
breach is not cured, waived or eliminated within twenty (20) days after 
receipt of written notice thereof;

    (d)     by Pentegra, Shareholders or Contributor if the transaction 
contemplated hereby shall not have been consummated by December 31, 1997; or 

    (e)     by Pentegra at any time prior to the Closing Date if Pentegra 
determines in its sole discretion as the result of its legal, financial and 
operational due diligence with respect to Contributor, that such termination 
is desirable and in the best interests of Pentegra. 

SECTION 12. TRANSFER REPRESENTATIONS.  

    12.1    TRANSFER RESTRICTIONS. For a period of one year from the Closing 
Date, Contributor shall not voluntarily (a) sell, assign, exchange, transfer, 
encumber, pledge, distribute, appoint or otherwise dispose of (i) any shares 
of Pentegra Common Stock received by such party hereunder, (ii) any interest 
(including without limitation, an option to buy or sell) in any shares of 
Pentegra Common Stock, in whole or in part, and no such attempted transfer 
shall be treated as effective for any purpose or (b) engage in any 
transaction, whether or not with respect to any shares of Pentegra Common 
Stock or any interest therein, the intent or effect of which is to reduce the 
risk of owning shares of Pentegra Common Stock.  The certificates evidencing 
the Pentegra Common Stock delivered to Contributor pursuant to the terms 
hereof will bear a legend substantially in the form set forth below and 
containing such other information as Pentegra may deem necessary or 
appropriate:

    The shares represented by this certificate may not be voluntarily sold,
    assigned, exchanged, transferred, encumbered, pledged, distributed,
    appointed or otherwise disposed of, and the issuer shall not be required to

                                       19

<PAGE>

    give effect to any attempted voluntary sale, assignment, exchange,
    transfer, encumbrance, pledge, distribution, appointment or other
    disposition prior to _________ [date that is one year from the Closing
    Date].  Upon the written request of the holder of this certificate, the
    issuer agrees to remove this restrictive legend (and any stop order placed
    with the transfer agent) after the date specified above.

    12.2    INVESTMENTS; COMPLIANCE WITH LAW.  Contributor and Shareholders 
acknowledge that the shares of Pentegra Common Stock to be delivered to 
Contributor pursuant to this Agreement have not been and will not be 
registered under the Securities Act of 1933 and may not be resold without 
compliance with the Securities Act of 1933.  The Pentegra Common Stock to be 
acquired by Contributor pursuant to this Agreement is being acquired solely 
for its own account, for investment purposes only and with no present 
intention of distributing, selling or otherwise disposing of it in connection 
with a distribution.  Contributor covenants, warrants and represents that 
none of the shares of Pentegra Common Stock issued to it will be offered, 
sold, assigned, pledged, hypothecated, transferred or otherwise disposed of 
except after full compliance with all of the applicable provisions of the 
Securities Act, as amended, and the rules and regulations of the Securities 
Exchange Commission and applicable state securities laws and regulations.  
All certificates evidencing shares of Pentegra Common Stock shall bear the 
following legend in addition to the legend referenced in SECTION 12.1. 

    The shares represented hereby have not been registered under the Securities
    Act of 1933 (the "Act") and may only be sold or otherwise transferred if
    the holder hereof complies with the Act and applicable securities laws.

    In addition, certificates evidencing shares of Pentegra Common Stock 
shall bear any legend required by the securities or blue sky laws of any 
state where Contributor resides.

    12.3    ECONOMIC RISK; SOPHISTICATION.  Contributor and Shareholders are 
able to bear the economic risk of an investment in Pentegra Common Stock 
acquired pursuant to this Agreement and can afford to sustain a total loss of 
such investment and have such knowledge and experience in financial and 
business matters that they are capable of evaluating the merits and risks of 
the proposed investment and therefore have the capacity to protect their own 
interests in connection with the acquisition of the Pentegra Common Stock.  
Contributor, Shareholders and their representatives have had an adequate 
opportunity to ask questions and receive answers from the officers of 
Pentegra concerning any and all matters relating to the background and 
experience of the officers and directors of Pentegra, the plans for the 
operations of the business of Pentegra, and any plans for additional 
acquisitions and the like.  Contributor, Shareholders and their 
representatives have asked any and all questions in the nature described in 
the preceding sentence and all questions have been answered to their 
satisfaction.   Contributor and Shareholders are "accredited investors" as 
defined in Regulation D of the Securities Act of 1933, as amended.

SECTION 13. NONDISCLOSURE OF CONFIDENTIAL INFORMATION.  Contributor and 
Shareholders recognize and acknowledge that they had in the past, currently 
have, and in the future may possibly have, access to certain confidential 
information of Pentegra that is valuable, special and unique assets of 
Pentegra's businesses.  Contributor and Shareholders agree that it will not 
disclose such confidential information to any person, firm, corporation, 
association or other entity for any purpose or reason whatsoever, unless (i) 
such information becomes available to or known by the public generally 
through no fault of Contributor or Shareholders, (ii) disclosure is required 
by law or the order of any governmental authority under color of law, 
provided, that prior to disclosing any information pursuant to this clause 
(ii), Contributor and Shareholders shall, if possible, give prior written 
notice thereof to the other parties hereto, and provide such other parties 
hereto with the opportunity to contest such disclosure, (iii) Contributor and 
Shareholders reasonably believe that such disclosure is required in 
connection with the defense of a lawsuit against the disclosing party, or 
(iv) Contributor and Shareholders are the sole and exclusive owner of such 
confidential information as a result of the transactions contemplated 
hereunder or otherwise.  In the event of a breach or threatened breach by 
Contributor or Shareholders of the provisions of this SECTION 13, Pentegra 
shall be entitled to an injunction restraining Contributor and Shareholders 
from disclosing, in whole or in part, such confidential information.  Nothing 
herein shall be construed as prohibiting Pentegra from pursuing any other 
available remedy for such breach or threatened breach, including the recovery 
of damages. The obligations of the parties under this SECTION 13 shall 
survive the termination of this Agreement.

                                       20
<PAGE>

SECTION 14. MISCELLANEOUS.

    14.1    TAX COVENANT.  The parties intend that the transactions 
contemplated by this Agreement, together with the transactions contemplated 
by the Other Agreement and the Initial Public Offering, will qualify as an 
exchange meeting the requirements of Section 351 of the Code.  The tax 
returns (and schedules thereto) of Shareholders, Contributor and Pentegra  
shall be filed in a manner consistent with such intention and Contributor and 
Pentegra shall each provide the other with such tax information, reports, 
returns or schedules as may be reasonably required to assist the other in so 
reporting the transactions contemplated hereby. 

    14.2    NOTICES.  Any communications required or desired to be given 
hereunder shall be deemed to have been properly given if sent by hand 
delivery, or by facsimile AND overnight courier, to the parties hereto at the 
following addresses, or at such other address as either party may advise the 
other in writing from time to time:

    If to Pentegra:

    Pentegra Dental Group, Inc.
    2999 N. 44th Street, Suite 650
    Phoenix, Arizona 85018
    Attn: President 
    Facsimile: (602) 952-0554 

    with a copy of each notice directed to Pentegra to:

    James S. Ryan, III, Esquire
    Jackson & Walker, L.L.P.
    901 Main Street
    Dallas, Texas  75202
    Facsimile:  (214) 953-5822

    If to Contributor or Shareholders: 

    To address set forth on EXHIBIT 14.2
    
    with a copy to:

    Person and address set forth on EXHIBIT 14.2


All such communications shall be deemed to have been delivered on the date of 
hand delivery or on the next business day following the deposit of such 
communications, properly addressed and postage prepaid with the overnight 
courier.

    14.3    FURTHER ASSURANCES.  Each party hereby agrees to perform any 
further acts and to execute and deliver any documents which may be reasonably 
necessary to carry out the provisions of this Agreement.

    14.4    EACH PARTY TO BEAR COSTS.  Subject to SECTION 14.12, each of the 
parties to this Agreement shall pay all of the costs and expenses incurred by 
such party in connection with the transactions contemplated by this 
Agreement, whether or not such transactions are consummated.  Without 
limiting the generality of the foregoing and whether or not such liabilities 
may be deemed to have been incurred in the ordinary course of business, 
Pentegra shall not be liable to or required to pay, either directly or 
indirectly, any fees and expenses of legal counsel, accountants, auditors or 
other persons or entities retained by Contributor or any Shareholder for 
services rendered in connection with negotiating and closing the transactions 
contemplated by this Agreement or the documents to be executed in connection 
herewith, whether or not such costs or expenses are incurred before or after 
the Closing Date. 

                                       21

<PAGE>

    14.5    PUBLIC DISCLOSURES.  Each party shall keep this Agreement and its 
terms confidential, and shall make no press release or public disclosure, 
either written or oral, regarding the transactions contemplated by this 
Agreement without the prior written consent of the other party, provided that 
the foregoing shall not prohibit any disclosure (a) by press release, filing 
or otherwise that Pentegra has determined in good faith judgment to be 
required by Federal  securities laws or the rules of the National Association 
of Securities Dealers, (b) to attorneys, accountants, investment bankers or 
other agents of the parties assisting the parties in connection with the 
transactions contemplated by this Agreement, and (c) by Pentegra in 
connection with the conduct of its Initial Public Offering and conducting an 
examination of the operations and assets of Contributor.

    14.6    GOVERNING LAW.  THIS AGREEMENT SHALL BE INTERPRETED, CONSTRUED 
AND ENFORCED IN ACCORDANCE WITH THE LAWS OF THE STATE OF INCORPORATION OF 
CONTRIBUTOR AND APPLIED WITHOUT GIVING EFFECT TO ANY CONFLICTS OF LAWS 
PRINCIPLES.

    14.7    CAPTIONS. The captions or headings in this Agreement are made for 
convenience and general reference only and shall not be construed to 
describe, define or limit the scope or intent of the provisions of this 
Agreement.

    14.8    INTEGRATION OF EXHIBITS.  All Exhibits attached to this Agreement 
are integral parts of this Agreement as if fully set forth herein, and all 
statements appearing therein shall be deemed disclosed for all purposes and 
not only in connection with the specific representation in which they are 
explicitly referenced.

    14.9    ENTIRE AGREEMENT/AMENDMENT.   THIS INSTRUMENT, INCLUDING ALL 
EXHIBITS ATTACHED HERETO, CONTAINS THE ENTIRE AGREEMENT OF THE PARTIES AND 
SUPERSEDES ANY AND ALL PRIOR OR CONTEMPORANEOUS AGREEMENTS BETWEEN THE 
PARTIES, WRITTEN OR ORAL, WITH RESPECT TO THE TRANSACTIONS CONTEMPLATED 
HEREBY.

    14.10   COUNTERPARTS.  This Agreement may be executed in several 
counterparts, each of which when so executed shall be deemed to be an 
original, and such counterparts shall together constitute and be one and the 
same instrument

    14.11   BINDING EFFECT/ASSIGNMENT.  This Agreement shall be binding on, 
and shall inure to the benefit of, the parties hereto, and their respective 
successors and assigns, and no other person shall acquire or have any right 
under or by virtue of this Agreement.  No party may assign any right or 
obligation hereunder without the prior written consent of the other parties; 
provided, however, that Pentegra may assign its rights and delegate its 
obligations hereunder to any entity that is an affiliate of Pentegra.  For 
purposes of this Agreement an "affiliate" of Pentegra shall include any 
entity that, through one or more intermediaries is, controlled, controlled by 
or under common control with, Pentegra.  Upon any such assignment prior to 
the Closing, all references herein to Pentegra (including those to Pentegra 
Common Stock) shall be deemed to include references to the assignee and the 
assignee's common stock.  Notwithstanding any such assignment, Pentegra shall 
not, absent a written release from Contributor, be relieved from its 
obligations to Contributor under this Agreement. 

    14.12   COSTS OF ENFORCEMENT. In the event that Pentegra, on the one 
hand, or Contributor, on the other hand, file suit in any court against any 
other party to enforce the terms of this Agreement against the other party or 
to obtain performance by it hereunder, the prevailing party will be entitled 
to recover all reasonable costs, including reasonable attorneys' fees, from 
the other party as part of any judgment in such suit. The term "prevailing 
party" shall mean the party in whose favor final judgment after appeal (if 
any) is rendered with respect to the claims asserted in the Complaint.  
"Reasonable attorneys' fees" are those reasonable attorneys' fees actually 
incurred in obtaining a judgment in favor of the prevailing party.

    14.13   PRORATIONS.  Contributor agrees to reimburse Pentegra at Closing 
a pro rata portion of all taxes levied upon the Assets for the calendar year 
in which the Closing occurs.  Such taxes shall be estimated, apportioned and 
pro-rated among Contributor and Pentegra as of the Closing Date, and the 
prorated amount due Pentegra shall be credited to the cash portion of the 
Purchase Consideration.  Upon payment by Pentegra of such taxes actually 
assessed and paid on the Assets, Pentegra shall calculate the apportionment 
of such taxes and shall pay Contributor or may demand from Contributor, and 
Contributor agrees to pay, the amount necessary to correct the estimate and 
proration made at Closing.

                                       22

<PAGE>

    14.14   AMENDMENTS; WAIVERS. This Agreement may be amended, modified or 
supplemented only by an instrument in writing executed by all the parties 
hereto.  Any waiver of the terms and conditions hereof must be in writing, 
and signed by the parties hereto.  The waiver of any of the terms and 
conditions of this Agreement shall not be construed as a waiver of any other 
terms and conditions hereof.

    14.15   ARBITRATION.   Upon the request of either Pentegra or the 
Contributors or Shareholders (hereinafter referred to as a "Party"), whether 
made before or after the institution of any legal proceeding, any dispute 
among the parties hereto  in any way arising out of, related to, or in 
connection with this Agreement (hereinafter a "Dispute"), shall be resolved 
by binding arbitration in accordance with the terms of this Section 
(hereinafter the "Arbitration Program").

    All Disputes between the Parties shall be resolved by binding arbitration 
administered by the American Arbitration Association (the "AAA") in 
accordance with the terms of this Arbitration Program, the Commercial 
Arbitration Rules of the AAA.  In the event of any inconsistency between this 
Arbitration Program and those rules or statutes, then the terms of this 
Arbitration Program shall control.

    The parties hereto agree to adhere to all warranties and covenants (as 
described herein) until such time as the arbitration process has been 
completed and the arbitrators have determined each party's post-arbitration 
obligations and responsibilities as it relates to such warranties and 
covenants.  No provision of, nor the exercise of any rights under, this 
Arbitration Program shall limit the right of any Party at any time to seek or 
use ancillary or preliminary judicial or non-judicial self help remedies for 
the purposes of obtaining, perfecting, preserving, or foreclosing upon any 
personal property in which there has been granted a security interest or lien 
by a Party in the Documents. In Disputes involving indebtedness or other 
monetary obligations, each Party agrees that the other Party may proceed 
against all liable persons, jointly and severally against one or more of 
them, without impairing rights against other liable persons.  Nor shall a 
Party be required to join the principal obligor or any other liable persons 
(e.g., sureties or guarantors) in any proceeding against a particular person. 
 A Party may release or settle with one or more liable persons as the Party 
deems fit without releasing or impairing rights to proceed against any 
persons not so released.  All statutes of limitation that would otherwise be 
applicable shall apply to any arbitration proceeding.

    The party seeking arbitration shall notify the other Party, in writing, 
of that Party's desire to arbitrate a dispute; and each Party shall, within 
twenty (20) days from the date such notification is received, select an 
arbitrator, and those two arbitrators shall select a third arbitrator within 
ten (10) days thereafter.  The issues or claims in dispute shall be committed 
to writing, separately stated and numbered, and each party's proposed answers 
or contentions shall be signed below the questions. Failure by a party to 
select an arbitrator within the prescribed time period shall serve as that 
Party's acquiescence and acceptance of the other party's selection of 
arbitrator. The arbitrators shall resolve all Disputes in accordance with the 
applicable substantive law.  Any Dispute shall be decided by a majority vote 
of three arbitrators, unless the claim or amount in controversy does not 
exceed $100,000.00, in which case a single arbitrator (who shall have 
authority to render a maximum award of $100,000.00, including all damages of 
any kind, costs and fees) may decide the Dispute. The arbitrators may grant 
any remedy or relief that the arbitrators deem just and equitable and within 
the scope of this Arbitration Program.  The arbitrators may also grant such 
ancillary relief as is necessary to make effective the award.  In all 
arbitration proceedings the arbitrators shall make specific and written 
findings of fact and conclusions of law.  In all arbitration proceedings in 
which the amount in controversy exceeds $100,000.00, in the aggregate, the 
Parties shall have in addition to the statutory right to seek vacation or 
modification of any award pursuant to applicable law, the right to seek 
vacation or modification of any award that is based in whole, or in part, on 
an incorrect or erroneous ruling of law by appeal to an appropriate court 
having jurisdiction; provided, however, that any such application for 
vacation or modification of an award based on an incorrect ruling of law must 
be filed in a court having jurisdiction over the Dispute within 15 days from 
the date the award in rendered.  The arbitrators' findings of fact shall be 
binding on all Parties and shall not be subject to further review except as 
otherwise allowed by applicable law.

    To the maximum extent practicable, an arbitration proceeding hereunder 
shall be concluded within 180 days of the filing of the Dispute with AAA. 
Arbitration proceedings hereunder shall be conducted where agreed to in 
writing by the Parties or, in the absence of such agreement in Phoeniz, 
Arizona or the headquarters of Pentegra if other than Phoeniz, Arizona.  The 
provisions of this Arbitration Program shall survive any termination, 
amendment, 

                                       23

<PAGE>

or expiration of the Documents, unless the Parties otherwise expressly agree 
in writing making specific reference to this Arbitration Program.  To the 
extent permitted by applicable law, the arbitrator shall have the power to 
award recovery of all costs and fees (including attorney's fees, 
administrative fees, and arbitrators' fees) to the prevailing Party.  This 
Arbitration Program may be amended, changed, or modified only by a writing 
which specifically refers to this Arbitration Program and which is signed by 
all the Parties.  If any term, covenant, condition or provision of the 
Arbitration Program is found to be unlawful or invalid or unenforceable, such 
illegality or invalidity or unenforceable shall not affect the legality, 
validity or enforceability of the remaining parts of this Arbitration 
Program, and all such remaining parts hereof shall be valid and enforceable 
and have full force and effect as if the illegal, invalid or unenforceable 
part had not been included.  Each Party agrees to keep all Disputes and 
arbitration proceedings strictly confidential, except for disclosures of 
information required in the ordinary course of business of the Parties or by 
applicable law or regulation.

    14.16   SEVERABILITY.  If any provision of this Agreement shall be found 
to be illegal, invalid or unenforceable under present or future laws, such 
provision shall be fully severable and this Agreement shall be construed and 
enforced as if such provision never comprised a part hereof; and the 
remaining provisions hereof shall remain in full force and effect.  In lieu 
of such provision, there shall be added automatically as part of this 
Agreement, a provision as similar in its terms to such provision as may be 
possible and be legal, valid and enforceable.

                                    [End of Page]

                                       24

<PAGE>

    IN WITNESS WHEREOF, the parties have executed this Agreement as of the 
day and year first above written.


                                  ---------------------------------------


                                  By: 
                                       ---------------------------------------
                                  Its:
                                       ---------------------------------------



                                  PENTEGRA DENTAL GROUP, INC. 



                                  By: 
                                       ---------------------------------------
                                  Its:
                                       ---------------------------------------




                                  ---------------------------------------

                                  -------------------------------------
                                                                       , D.D.S.

                                       25

<PAGE>


                                  INDEX TO EXHIBITS

    Exhibit             Description
    -------             ----------- 

    Annex I   Acquisition Consideration
    A         Target Companies
    1.1       Assets
    1.2(b)    Excluded Assets
    1.3(b)    Assumed Liabilities
    2.1       Corporate Existence; Good Standing; Shareholders/Ownership
    2.3       Permits and Licenses
    2.4       Consents
    2.8       Leases
    2.10      Real and Personal Property; Encumbrances
    2.12      Patents and Trademarks; Names
    2.13      Directors and Officers; Payroll Information; Employment Agreements
    2.15      Contracts (other than Leases and Employment Agreements) 
    2.16      Subsequent Events
    2.19      Debt
    2.20      Insurance Policies
    2.21      Employee Benefit Plans
    2.26      Banking Relations
    2.28      Payors
    7.7       Form of Service Agreement
    7.8       Form of Employment Agreement
    9.1(l)    Form of Registration Rights Agreement
    14.2      Addresses for Notice

                                       26

<PAGE>

                                     ANNEX I

                              ACQUISITION CONSIDERATION

    The aggregate consideration to be received by the Contributor pursuant to 
the Agreement (the "Acquisition Consideration") is the following: 

    Shares of Pentegra Common Stock equal to $_________ divided by the initial 
public offering price of Pentegra. 

    Cash in the amount of $________________________.

    No fractional shares of Pentegra Common Stock will be issued; rather, 
shares of Pentegra Common Stock to be issued to Contributor shall be rounded 
to the nearest whole share. 

                                       27


<PAGE>

                                                                   EXHIBIT 2.4



                 FORM OF AGREEMENT AND PLAN OF REORGANIZATION 

                                     BY AND AMONG


                            PENTEGRA DENTAL GROUP, INC., 

                  __________________________________ [target entity]

                                         and

                   _______________________________ [shareholders] 


                                       
<PAGE>


                                  TABLE OF CONTENTS

<TABLE>
                                                                                 Page
                                                                                 ----
<S>         <C>                                                                  <C>

Section 1.  TERMS OF THE REORGANIZATION
    1.2     MERGER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
    1.3     CERTIFICATE OF INCORPORATION; BYLAWS . . . . . . . . . . . . . . . . . .2
    1.7     SUBSEQUENT ACTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Section 2.  REPRESENTATIONS AND WARRANTIES OF COMPANY AND SHAREHOLDERS.
    2.1     CORPORATE EXISTENCE; GOOD STANDING . . . . . . . . . . . . . . . . . . .2
    2.2     POWER AND AUTHORITY FOR TRANSACTIONS . . . . . . . . . . . . . . . . . .3
    2.3     PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS. . . . . . . . . . . .3
    2.4     CONSENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
    2.5     DISTRIBUTIONS AND REPURCHASES. . . . . . . . . . . . . . . . . . . . . .3
    2.6     CORPORATE RECORDS. . . . . . . . . . . . . . . . . . . . . . . . . . . .3
    2.7     COMPANY'S FINANCIAL INFORMATION. . . . . . . . . . . . . . . . . . . . .4
    2.8     LEASES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
    2.9     CONDITION OF ASSETS. . . . . . . . . . . . . . . . . . . . . . . . . . .4
    2.10    TITLE TO AND ENCUMBRANCES ON PROPERTY. . . . . . . . . . . . . . . . . .4
    2.11    INVENTORIES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
    2.12    INTELLECTUAL PROPERTY RIGHTS; NAMES. . . . . . . . . . . . . . . . . . .4
    2.13    DIRECTORS AND OFFICERS; PAYROLL INFORMATION; EMPLOYEES . . . . . . . . .4
    2.14    LEGAL PROCEEDINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . .5
    2.15    CONTRACTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
    2.16    SUBSEQUENT EVENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . .6
    2.17    TAXES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
    2.18    COMMISSIONS AND FEES . . . . . . . . . . . . . . . . . . . . . . . . . .7
    2.19    LIABILITIES; DEBT. . . . . . . . . . . . . . . . . . . . . . . . . . . .7
    2.20    INSURANCE POLICIES . . . . . . . . . . . . . . . . . . . . . . . . . . .7
    2.21    EMPLOYEE BENEFIT PLANS . . . . . . . . . . . . . . . . . . . . . . . . .7
    2.22    ADVERSE AGREEMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . .8
    2.23    COMPLIANCE WITH LAWS IN GENERAL. . . . . . . . . . . . . . . . . . . . .8
    2.24    THIRD PARTY PAYORS . . . . . . . . . . . . . . . . . . . . . . . . . . .8
    2.25    NO UNTRUE REPRESENTATIONS. . . . . . . . . . . . . . . . . . . . . . . .8
    2.26    BANKING RELATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . .8
    2.27    OWNERSHIP INTERESTS OF INTERESTED PERSONS; COMPETITORS . . . . . . . . .9
    2.28    PAYORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Section 3.  REPRESENTATIONS AND WARRANTIES OF PENTEGRA
    3.1     CORPORATE EXISTENCE: GOOD STANDING . . . . . . . . . . . . . . . . . . .9
    3.2     POWER AND AUTHORITY; CONSENTS. . . . . . . . . . . . . . . . . . . . . .9
    3.3     PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS. . . . . . . . . . . .9
    3.4     LEGAL PROCEEDINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . .9
    3.5     TAXES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
    3.6     COMMISSIONS AND FEES . . . . . . . . . . . . . . . . . . . . . . . . . 10
    3.7     CAPITAL STOCK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
    3.8     NO UNTRUE REPRESENTATIONS. . . . . . . . . . . . . . . . . . . . . . . 10

Section 4.  COVENANTS OF COMPANY AND SHAREHOLDERS.
    4.1     CONSUMMATION OF AGREEMENT; EXHIBITS. . . . . . . . . . . . . . . . . . 10
    4.2     BUSINESS OPERATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . 10



                                       -i-
<PAGE>


    4.3     ACCESS AND NOTICE. . . . . . . . . . . . . . . . . . . . . . . . . . . 10
    4.4     APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS. . . . . . . . . . 10
    4.5     ACQUISITION PROPOSALS. . . . . . . . . . . . . . . . . . . . . . . . . 11
    4.6     FUNDING OF ACCRUED EMPLOYEE BENEFITS . . . . . . . . . . . . . . . . . 11
    4.7     EMPLOYEE MATTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
    4.8     DISTRIBUTIONS AND REPURCHASES. . . . . . . . . . . . . . . . . . . . . 11
    4.9     REQUIREMENTS TO EFFECT REORGANIZATION. . . . . . . . . . . . . . . . . 11
    4.10    ACCOUNTING AND TAX MATTERS . . . . . . . . . . . . . . . . . . . . . . 11
    4.11    WAIVER OF BULK TRANSFER COMPLIANCE . . . . . . . . . . . . . . . . . . 11
    4.12    LEASE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
    4.13    HIRING OF EMPLOYEES. . . . . . . . . . . . . . . . . . . . . . . . . . 12
    4.14    EMPLOYEE BENEFIT PLANS . . . . . . . . . . . . . . . . . . . . . . . . 12
    4.15    INSURANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
    4.17    CORPORATE RECORDS. . . . . . . . . . . . . . . . . . . . . . . . . . . 12
    4.18    POWER AND AUTHORITY FOR TRANSACTIONS . . . . . . . . . . . . . . . . . 12
    4.19    NO BUSINESS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
    4.20    COMPLIANCE WITH LAWS . . . . . . . . . . . . . . . . . . . . . . . . . 13

Section 5.  COVENANTS OF PENTEGRA
    5.1     CONSUMMATION OF AGREEMENT; EXHIBITS. . . . . . . . . . . . . . . . . . 13
    5.2     APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS. . . . . . . . . . 13

Section 6.  COVENANTS OF PENTEGRA AND COMPANY AND SHAREHOLDERS
    6.1     FILINGS; OTHER ACTIONS . . . . . . . . . . . . . . . . . . . . . . . . 13

Section 7.  PENTEGRA CONDITIONS PRECEDENT
    7.1     REPRESENTATIONS AND WARRANTIES . . . . . . . . . . . . . . . . . . . . 14
    7.2     COVENANTS AND CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . 14
    7.3     PROCEEDINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
    7.4     NO MATERIAL ADVERSE CHANGE . . . . . . . . . . . . . . . . . . . . . . 14
    7.5     DUE DILIGENCE REVIEW . . . . . . . . . . . . . . . . . . . . . . . . . 14
    7.6     APPROVAL BY THE BOARD OF DIRECTORS . . . . . . . . . . . . . . . . . . 14
    7.7     SERVICE AGREEMENT; GUARANTY AGREEMENT. . . . . . . . . . . . . . . . . 14
    7.8     EMPLOYMENT ARRANGEMENTS. . . . . . . . . . . . . . . . . . . . . . . . 14
    7.9     CONSENTS AND APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . 14
    7.10    CLOSING DELIVERIES . . . . . . . . . . . . . . . . . . . . . . . . . . 14
    7.11    DEBT AND RECEIVABLES . . . . . . . . . . . . . . . . . . . . . . . . . 14
    7.12    INSURANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
    7.13    NO CHANGE IN WORKING CAPITAL . . . . . . . . . . . . . . . . . . . . . 15
    7.14    SECURITIES APPROVAL. . . . . . . . . . . . . . . . . . . . . . . . . . 15

Section 8.  COMPANY'S AND SHAREHOLDERS' CONDITIONS PRECEDENT
    8.1     REPRESENTATIONS AND WARRANTIES . . . . . . . . . . . . . . . . . . . . 15
    8.2     COVENANTS AND CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . 15
    8.3     PROCEEDINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
    8.4     CLOSING DELIVERIES . . . . . . . . . . . . . . . . . . . . . . . . . . 15
    8.5     SECURITIES APPROVAL. . . . . . . . . . . . . . . . . . . . . . . . . . 15

Section 9.  CLOSING DELIVERIES
    9.1     DELIVERIES OF COMPANY AND SHAREHOLDERS . . . . . . . . . . . . . . . . 15
    9.2     DELIVERIES OF PENTEGRA . . . . . . . . . . . . . . . . . . . . . . . . 16

Section 10. NATURE AND SURVIVAL OF REPRESENTATIONS AND WARRANTIES;
            INDEMNIFICATION


                                       -ii-
<PAGE>

    10.1    NATURE AND SURVIVAL. . . . . . . . . . . . . . . . . . . . . . . . . . 17
    10.2    INDEMNIFICATION BY PENTEGRA. . . . . . . . . . . . . . . . . . . . . . 17
    10.3    INDEMNIFICATION BY COMPANY AND SHAREHOLDERS. . . . . . . . . . . . . . 18
    10.4    INDEMNIFICATION PROCEDURE. . . . . . . . . . . . . . . . . . . . . . . 19
    10.5    RIGHT OF SETOFF. . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Section 11. TERMINATION

Section 12. TRANSFER REPRESENTATIONS
    12.1    TRANSFER RESTRICTIONS. . . . . . . . . . . . . . . . . . . . . . . . . 20
    12.2    INVESTMENTS; COMPLIANCE WITH LAW . . . . . . . . . . . . . . . . . . . 20
    12.3    ECONOMIC RISK; SOPHISTICATION. . . . . . . . . . . . . . . . . . . . . 21

Section 13. NONDISCLOSURE OF CONFIDENTIAL INFORMATION

Section 14. MISCELLANEOUS
    14.1    TAX COVENANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
    14.2    NOTICES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
    14.3    FURTHER ASSURANCES . . . . . . . . . . . . . . . . . . . . . . . . . . 22
    14.4    EACH PARTY TO BEAR COSTS . . . . . . . . . . . . . . . . . . . . . . . 22
    14.5    PUBLIC DISCLOSURES . . . . . . . . . . . . . . . . . . . . . . . . . . 22
    14.6    GOVERNING LAW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
    14.7    CAPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
    14.8    INTEGRATION OF EXHIBITS. . . . . . . . . . . . . . . . . . . . . . . . 22
    14.9    ENTIRE AGREEMENT/AMENDMENT . . . . . . . . . . . . . . . . . . . . . . 22
    14.10   COUNTERPARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
    14.11   BINDING EFFECT/ASSIGNMENT. . . . . . . . . . . . . . . . . . . . . . . 23
    14.12   COSTS OF ENFORCEMENT . . . . . . . . . . . . . . . . . . . . . . . . . 23
    14.13   PRORATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
    14.14   AMENDMENTS; WAIVERS. . . . . . . . . . . . . . . . . . . . . . . . . . 23
    14.15   ARBITRATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
    14.16   SEVERABILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

</TABLE>




                                       -iii-
<PAGE>



                        AGREEMENT AND PLAN OF REORGANIZATION 


    This AGREEMENT AND PLAN OF REORGANIZATION (this "Agreement"), made and 
executed as of ________________, 1997, is by and among PENTEGRA  DENTAL 
GROUP, INC., a Delaware corporation ("Pentegra"), ________________________ 
("Company") and ______________________, shareholders of Company  
(referred to herein as "Shareholder" or "Shareholders").  

                                     WITNESSETH:


    WHEREAS, Company operates a dental practice ("Business") and Pentegra is
engaged in the business of  managing certain non-dentistry aspects of dental
practices; 

    WHEREAS, the Boards of Directors of the Company and Pentegra have
determined that a reorganization between each of them is in the best interests
of their respective companies;

    WHEREAS, Pentegra or its affiliated designee has entered into or intends to
enter into Agreements and Plans of Reorganization, Asset Contribution Agreements
and other acquisition agreements (collectively, the "Other Agreements") with
such persons or entities or the stockholders of such entities listed on EXHIBIT
A (together with Company, the "Target Companies") and simultaneously with the
closing of the reorganization contemplated herein, intends to consummate its
initial public offering ("Initial Public Offering") of shares of its common
stock, par value $.01 per share ("Pentegra Common Stock"); 

    WHEREAS, it is intended for Federal income tax purposes that the
reorganization contemplated by this Agreement shall qualify as an reorganization
within the meaning of Section 368(a) of the Internal Revenue Code of 1986, as
amended ("IRC" or "Code");

    WHEREAS, the consummation of the transfers to Pentegra pursuant to this
Agreement is intended to occur in connection with, and is conditioned upon, the
simultaneous consummation of the transfers contemplated by the Other Agreements
and the Initial Public Offering.
 .
    NOW THEREFORE, in consideration of the mutual promises and covenants
hereinafter set forth, and for other good and valuable consideration, the
sufficiency of which are hereby acknowledged, the parties agree as follows:


SECTION 1.  TERMS OF THE REORGANIZATION.

    1.1     THE CLOSING.  The closing of the transactions contemplated hereby
shall take place at 10:00 am local time, at the offices of Jackson & Walker,
L.L.P., on the day on which the Initial Public Offering of Pentegra Common Stock
is consummated.  The date on which the Closing occurs is hereinafter referred to
as the "Closing Date". 

    1.2     MERGER.  Subject to and upon the terms and conditions contained
herein, on the Closing Date, the Company shall be merged with and into Pentegra
(or its designated affiliate, in which case, the references herein to Pentegra
shall be to such designated affiliate and its shares of common stock) in
accordance with this Agreement and the separate corporate existence of the
Company shall thereupon cease ("Merger").  Pentegra shall be the surviving
corporation in the Merger ("Surviving Corporation")  and shall continue to be
governed by the laws of the State of Delaware and the separate corporate
existence of Pentegra with all rights, privileges, powers, immunities and
purposes shall continue unaffected by the Merger.  The Merger shall have the
effects specified in the Delaware General Corporation Law and the _______ 
Business Corporation Law.  If all the conditions to the Merger set forth herein
shall have been fulfilled or waived in accordance herewith and this Agreement
shall not have been terminated in accordance 


                                       1
<PAGE>

herewith, the parties hereto shall cause to be properly executed and filed on 
the Closing Date Certificates of Merger for the Company meeting the 
applicable legal requirements.  The Mergers shall become effective on the 
Closing Date or the filing of such documents, in accordance with applicable 
law, or at such later time as the parties hereto have agreed upon and 
designated in such merger filings.

    1.3     CERTIFICATE OF INCORPORATION; BYLAWS.  The Certificate of 
Incorporation and Bylaws of Pentegra shall be the Certificate of 
Incorporation and Bylaws of the Surviving Corporation until duly amended in 
accordance with their terms.

    1.4     DIRECTORS; OFFICERS.  The persons who are directors of Pentegra 
immediately prior to the effective date of the Merger shall be the directors 
of the Surviving Corporation until their successors have been duly elected or 
appointed and qualified or until their earlier death, resignation or removal 
in accordance with the Surviving Corporation's Certificate of Incorporation 
and Bylaws.  The persons who are officers of Pentegra immediately prior to 
the effective date of the Merger shall be the officers of the Surviving 
Corporation and shall hold their respective offices until their successors 
have been duly elected or appointed and qualified or until their earlier 
death, resignation or removal.

    1.5     CONVERSION OF COMPANY COMMON STOCK.  As a result of the Merger 
and without any action on the part of the holder thereof, all shares of the 
Company's common stock issued and outstanding on the effective date of the 
Merger shall cease to be outstanding and shall be cancelled and retired and 
shall cease to exist, and each holder of a certificate of representing shares 
of Company common stock shall thereafter cease to have any rights with 
respect to such shares except the right to receive the consideration set 
forth on ANNEX I attached hereto (the "Merger Consideration").   Each share 
of common stock of the Company held in treasury at the effective date of the 
Merger shall cease to be outstanding and shall be cancelled and retired 
without payment of any consideration therefor.  On the effective date of the 
Merger, each share of Pentegra Common Stock issued and outstanding shall, by 
virtue of he Mergers, and without any action on the part of the holder 
thereof, continue unchanged and remain outstanding as a share of validly 
issued, fully paid and nonassessable share of Surviving Corporation common 
stock.

    1.6     EXCHANGE OF STOCK CERTIFICATES.  On the effective date of the 
Merger, the Shareholders, as the holders of a certificate or certificates 
representing shares of Company common stock shall, upon surrender of such 
certificate or certificates, receive the Merger Consideration, and until the 
certificate or certificates of Company common stock shall have been 
surrendered by the Shareholder and replaced by a certificate or certificates 
representing Pentegra Common Stock (as set forth on ANNEX I), the certificate 
or certificates of Company common stock shall, for all purposes be deemed to 
evidence ownership of the number of shares of Pentegra Common Stock 
determined in accordance with the provisions of ANNEX I.  All shares of 
Pentegra Common Stock issuable to the Shareholders in the Merger shall be 
deemed for all purposes to have been issued by Pentegra on the Closing Date.  
The Shareholders shall deliver to Pentegra at Closing the certificate or 
certificates representing the Company common stock owned by them, duly 
endorsed in blank by the Shareholders, or accompanied by duly executed blank 
stock powers, and with all necessary transfer tax and other revenue stamps, 
acquired at the Shareholder's expense, affixed and cancelled.  

    1.7     SUBSEQUENT ACTIONS. If, at any time after the Closing Date, 
Pentegra shall consider or be advised that any deeds, bills of sale, 
assignments, assurances or any other actions or things are necessary or 
desirable to vest, perfect or confirm of record or otherwise in Pentegra its 
right, title or interest in, to or under any of the Assets or otherwise to 
carry out this Agreement, in return for the consideration set forth in this 
Agreement, the Company and Shareholders shall excecute and deliver all such 
deeds, bills of sale, assignments and assurances and take and do all such 
other actions and things as may be necessary or desirable to vest, perfect or 
confirm any and all right, title and interest in, to and under the Assets in 
Pentegra or otherwise to carry out this Agreement.



                                       2
<PAGE>

SECTION 2.  REPRESENTATIONS AND WARRANTIES OF COMPANY AND SHAREHOLDERS.

    Company and Shareholders, jointly and severally, hereby represent and
warrant to Pentegra as follows:

    2.1     CORPORATE EXISTENCE; GOOD STANDING.  Company is a professional
corporation or association, as applicable, duly organized, validly existing and
in good standing under the laws of the State of _________________.  Company has
all necessary corporate powers to own all of its assets and to carry on its
business as such business is now being conducted.  Company does not own stock in
or control, directly or indirectly, any other corporation, association or
business organization, nor is Company a party to any joint venture or
partnership.  The Shareholders are the sole shareholders of Company and own all
outstanding shares of capital stock free of all security interests, claims,
encumbrances and liens in the amounts set forth on EXHIBIT 2.1.  Each share of
Company's common stock has been legally and validly issued and fully paid and
nonassessable.  No shares of capital stock of Company are owned by Company in
treasury. There are no outstanding (a) bonds, debentures, notes or other
obligations the holders of which have the right to vote with the stockholders of
Company on any matter, (b) securities of Company convertible into equity
interests in Company, or (c) commitments, options, rights or warrants to issue
any such equity interests in Company, to issue securities of Company convertible
into such equity interests, or to redeem any securities of Company.  No shares
of capital stock of Company have been issued or disposed of in violation of the
preemptive rights, rights of first refusal or similar rights of any of Company's
stockholders.  Company is not required to qualify to do business as a foreign
corporation in any other state or jurisdiction by reason of its business,
properties or activities in or relating to such other state or jurisdiction. 
Company does not have any assets, employees or offices in any state other than
the state set forth in the first sentence of this SECTION 2.1.

    2.2     POWER AND AUTHORITY FOR TRANSACTIONS.  Company has the corporate
power to execute, deliver and perform this Agreement and all agreements and
other documents executed and delivered by it pursuant to this Agreement or to be
executed and delivered on the Closing Date, and has taken all action required by
law, its Articles or Certificate of Incorporation, its Bylaws or otherwise, to
authorize the execution, delivery and performance of this Agreement and such
related documents.  Each Shareholder has the legal capacity to enter into and
perform this Agreement and the other agreements to be executed and delivered in
connection herewith.  Company has obtained the approval of its stockholders
necessary to the consummation of the transactions contemplated herein.  This
Agreement and all agreements and documents executed and delivered in connection
herewith have been, or will be as of the Closing Date, duly executed and
delivered by Company and Shareholders, as appropriate,  and constitute or will
constitute the legal, valid and binding obligations of Company and Shareholders,
enforceable against Company and Shareholders in accordance with their respective
terms, except as may be limited by applicable bankruptcy, insolvency or similar
laws affecting creditors' rights generally or the availability of equitable
remedies.  The execution and delivery of this Agreement, and the agreements
executed and delivered pursuant to this Agreement or to be executed and
delivered on the Closing Date, do not, and, subject to the receipt of consents
described on EXHIBIT 2.4, the consummation of the actions contemplated hereby
will not, violate any provision of the Articles or Certificate of Incorporation
or Bylaws of Company or any provisions of, or result in the acceleration of, any
obligation under any mortgage, lien, lease, agreement, rent, instrument, order,
arbitration award, judgment or decree to which Company or any Shareholder is a
party or by which Company or any Shareholder is bound, or violate any material
restrictions of any kind to which Company is subject, or result in any lien or
encumbrance on any of Company's assets or the Assets.

    2.3     PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS.  All building or
other permits, certificates of occupancy, concessions, grants, franchises,
licenses, certificates of need and other governmental authorizations and
approvals required for the conduct of the Business or the use of the Assets, or
waivers thereof, have been duly obtained and are in full force and effect and
are described on EXHIBIT 2.3.  There are no proceedings pending or, to the
knowledge of Company and Shareholders, threatened, which may result in the
revocation, cancellation or suspension, or any adverse modification, of any such
licenses or permits. 

    2.4     CONSENTS.  Except as set forth on EXHIBIT 2.4, no consent,
authorization, permit, license or filing with any governmental authority, any
lender, lessor, any manufacturer or supplier or any other person or entity is
required to authorize, or is required in connection with, the execution,
delivery and performance of this Agreement and the agreements and documents
contemplated hereby on the part of Company or Shareholders. 


                                       3
<PAGE>

    2.5     DISTRIBUTIONS AND REPURCHASES.  No distribution, payment or
dividend of any kind has been declared or paid by Company on any of its capital
stock since the Balance Sheet Date.  No repurchase of any of Company's capital
stock has been approved, effected or is pending, or is contemplated by Company. 

    2.6     CORPORATE RECORDS.  True and correct copies of the Articles or
Certificate of Incorporation, Bylaws and minutes of Company and all amendments
thereto have been delivered to Pentegra.  The minute books of Company contain
accurate minutes of all meetings of and consents to actions taken without
meetings of the Board of Directors and stockholders of Company since its
formation.  The books of account of Company have been kept accurately in the
ordinary course of business and the revenues, expenses, assets and liabilities
of Company have been properly recorded in such books.

    2.7     COMPANY'S FINANCIAL INFORMATION.  Company has heretofore furnished
Pentegra with copies of its unaudited balance sheet and related unaudited
statements of income, retained earnings and cash flows for its prior two full
fiscal years, as well as copies of its unaudited balance sheet as of December
31, 1996 and June 30, 1997 (collectively, the "Balance Sheet" and the latest
date thereof shall be referred to as the "Balance Sheet Date") and any related
unaudited statements of income, retained earnings, schedule of accounts
receivable, accounts payable and accrued liabilities, and cash flows for the
twelve months then ended (collectively, with the related notes thereto, the
"Financial Statements").  The Financial Statements fairly present the financial
condition and results of operations of Company as of the dates and for the
periods indicated and reflect all fixed and contingent liabilities of Company.

    2.8     LEASES.  EXHIBIT 2.8 attached hereto sets forth a list of all
leases pursuant to which Company or any Shareholder leases, as lessor or lessee,
real or personal property used in operating the Business, related to the Assets
or otherwise.  All such leases listed on EXHIBIT 2.8 are valid and enforceable
in accordance with their respective terms, and there is not under any such lease
any existing default by Company, as lessor or lessee, or any condition or event
of which any Shareholder or Company has knowledge which with notice or lapse of
time, or both, would constitute a default, in respect of which Company or
Shareholders have not taken adequate steps to cure such default or to prevent a
default from occurring.

    2.9     CONDITION OF ASSETS.   All of the Assets are in good condition and
repair subject to normal wear and tear and conform with all applicable
ordinances, regulations and other laws, and Company and Shareholders have no
knowledge of any latent defects therein.

    2.10    TITLE TO AND ENCUMBRANCES ON PROPERTY.  Company has good, valid and
marketable title to all of the Assets, free and clear of any liens, claims,
charges, exceptions or encumbrances, except for those, if any, which are set
forth in EXHIBIT 2.10 attached hereto.  Company shall cause all encumbrances set
forth on EXHIBIT 2.10 (other than those encumbrances indicated on EXHIBIT
1.3(B)) to be released or terminated prior to the Closing Date and evidence of
such releases of liens and claims shall be provided to Pentegra on the Closing
Date and the Assets shall not be used to satisfy such liens, claims or
encumbrances.

    2.11    INVENTORIES.    All of the Assets constituting inventory are owned
or used by Company, are in good, current, standard and merchantable condition
and are not obsolete or defective.

    2.12    INTELLECTUAL PROPERTY RIGHTS; NAMES.  Except as set forth on 
EXHIBIT 2.12, Company has no right, title or interest in or to patents, 
patent rights, corporate names, assumed names, manufacturing processes, trade 
names, trademarks, service marks, inventions, specialized treatment 
protocols, copyrights, formulas and trade secrets or similar items.   Set 
forth in EXHIBIT 2.12 is a listing of all names of all predecessor companies 
of Company, including the names of any entities from whom Company previously 
acquired significant assets.  Except for off-the-shelf software licenses and 
except as set forth on EXHIBIT 2.12, Company is not a licensee in respect of 
any patents, trademarks, service marks, trade names, copyrights or 
applications therefor, or manufacturing processes, formulas or trade secrets 
or similar items and no such licenses are necessary for the conduct of the 
Business or the use of the Assets. No claim is pending or has been made to 
the effect that the Assets or the present or past operations of Company in 
connection with the Assets or Business infringe upon or conflict with the 
asserted rights of others to any patents, patent rights, manufacturing 
processes, trade names, trademarks, service marks, inventions, licenses, 
specialized treatment protocols, copyrights, formulas, know-how and trade 
secrets.  Company has the sole and exclusive right to use all Assets 
constituting 

                                       4
<PAGE>


proprietary rights without infringing or violating the rights of any third 
parties and no consents of any third parties are required for the use thereof 
by Pentegra. 

    2.13    DIRECTORS AND OFFICERS; PAYROLL INFORMATION; EMPLOYEES.  Set 
forth on EXHIBIT 2.13 attached hereto is a true and complete list, as of the 
date of this Agreement of: (a) the name of each director and officer of 
Company and the offices held by each, (b) the most recent payroll report of 
Company, showing all current employees of Company and their current levels of 
compensation, (c) promised increases in compensation of employees of Company 
that have not yet been effected, (d) oral or written employment agreements, 
consulting agreements or independent contractor agreements (and all 
amendments thereto) to which Company is a party, copies of which have been 
delivered to Pentegra, and (e) all employee manuals, materials, policies, 
procedures and work-related rules, copies of which have been delivered to 
Pentegra.  Company is in compliance with all applicable laws, rules, 
regulations and ordinances respecting employment and employment practices.  
Company has not engaged in any unfair labor practice. There are no unfair 
labor practices charges or complaints pending or threatened against Company, 
and Company has never been a party to any agreement with any union, labor 
organization or collective bargaining unit.

    2.14    LEGAL PROCEEDINGS.  Neither any Shareholder, Company nor the 
Business nor any of the Assets is subject to any pending, nor does Company or 
any Shareholder have knowledge of any threatened, litigation, governmental 
investigation, condemnation or other proceeding against or relating to or 
affecting Company, any Shareholder, the Business, the Assets or the 
transactions contemplated by this Agreement, and, to the knowledge of Company 
and Shareholders, no basis for any such action exists, nor is there any legal 
impediment of which Company or any Shareholder has knowledge to the continued 
operation of its business or the use of the Assets in the ordinary course, 
subject to consents set forth on EXHIBIT 2.4. 

    2.15    CONTRACTS.  Company has delivered to Pentegra true copies of all 
written, and disclosed to Pentegra all oral, outstanding contracts, 
obligations and commitments of Company ("Contracts"), entered into in 
connection with and related to the Assets or the Business, all of which are 
listed or incorporated by reference on EXHIBIT 2.8 (in the case of leases), 
EXHIBIT 2.13 (in the case of employment agreements) and EXHIBIT 2.15 (in the 
case of Contracts other than leases) attached hereto.  Except as otherwise 
indicated on such Exhibits, all of such Contracts are valid, binding and 
enforceable in accordance with their terms and are in full force and effect, 
and no defenses, offsets or counterclaims have been asserted or may be made 
by any party thereto.  Except as indicated on such Exhibits, there is not 
under any such Contract any existing default by Company or any Shareholder, 
or any condition or event of which Company or any Shareholder has knowledge 
which with notice or lapse of time, or both, would constitute a default.   
Company and Shareholders have no knowledge of any default by any other party 
to such Contracts.  Company and Shareholders have not received notice of the 
intention of any party to any Contract to cancel or terminate any Contract 
and have no reason to believe that any amendment or change to any Contract is 
contemplated by any party thereto.  Other than those contracts, obligations 
and commitments listed on EXHIBIT 2.8, EXHIBIT 2.13 and EXHIBIT 2.15, Company 
are not a party to any material written or oral agreement contract, lease or 
arrangement, including without limitation, any:

            (a)    Contract related to the Assets other than this Agreement;

            (b)    Employment, consulting or compensation agreement or
arrangement;

            (c)    Labor or collective bargaining agreement;

            (d)    Lease agreement with respect to any property, whether as
lessor or lessee;

            (e)    Deed, bill of sale or other document evidencing an interest
in or agreement to purchase or sell real or personal property;

            (f)    Contract for the purchase of materials, supplies or
equipment (i) which is in excess of the requirements of the Business now booked
or for normal operating inventories, or (ii) which is not terminable upon notice
of thirty (30) days or less;



                                       5
<PAGE>

            (g)    Agreement for the purchase from a supplier of all or 
substantially all of the requirements of the Business of a particular product 
or service;

            (h)    Loan agreement or other contract for money borrowed or 
lent or to be borrowed or lent to another; 

            (i)    Contracts containing non-competition covenants; 

            (j)    Financial or similar contracts or agreements with patients 
of the Company or Shareholders, oral or written, that provide for prepayments 
or deferred installment payments; or 

            (k)    Other contracts or agreements that involve either an 
unperformed commitment in excess of $1,000 or that terminate or can only be 
terminated by Company on more than 30 days after the date hereof.

    2.16    SUBSEQUENT EVENTS.  Other than as set forth on EXHIBIT 2.16, 
Company has not, since the Balance Sheet Date:

            (a)    Incurred any material obligation or liability (absolute, 
accrued, contingent or otherwise) or entered into any contract, lease, 
license or commitment, except in connection with the performance of this 
Agreement;  

            (b)    Discharged or satisfied any material lien or encumbrance, 
or paid or satisfied any material obligation or liability (absolute, accrued, 
contingent or otherwise) other than (i) liabilities shown or reflected on the 
Balance Sheet, (ii) liabilities incurred since the Balance Sheet Date in the 
ordinary course of business;

            (c)    Formed or acquired or disposed of any interest in any 
corporation, partnership, joint venture or other entity;

            (d)    Made any payments to or loaned any money to any person or 
entity other than in the ordinary course of business;

            (e)    Lost or terminated any employee, patient, customer or 
supplier that has or may have, individually or in the aggregate, a material 
adverse effect on the Business; 

            (f)    Increased or established any reserve for taxes or any 
other liability on its books or otherwise provided therefor, except as may 
have been required due to income or operations of Company since the Balance 
Sheet Date;

            (g)    Mortgaged, pledged or subjected to any lien, charge or 
other encumbrance any of the Assets, tangible or intangible;

            (h)    Sold or contracted to sell or transferred or contracted to 
transfer any of the Assets or any other assets used in the conduct of the 
Business, canceled any debts or claims or waived any rights, except in the 
ordinary course of business;

            (i)    Except in the ordinary course or business consistent with 
past practices, granted any increase in the rates of pay of employees, 
consultants or agents, or by means of any bonus or pension plan, contract or 
other commitment, increased the compensation of any officer, employee, 
consultant or agent;

            (j)    Authorized or incurred any capital expenditures in excess 
of Five Thousand and No/100 Dollars ($5,000.00);

            (k)    Except for this Agreement and any other agreement executed 
and delivered pursuant to this Agreement, entered into any material 
transaction other than in the ordinary course of business or permitted 
hereunder; 

                                       

<PAGE>

            (l)    Redeemed, purchased, sold or issued any stock, bonds or 
other securities;

            (m)    Experienced damage, destruction or loss (whether or not 
covered by insurance) materially and adversely affecting any of its 
properties, assets or business or the Business or the Assets, or experienced 
any other material adverse change in its financial condition, assets, 
prospects, liabilities or business;

            (n)    Declared or paid a distribution, payment or dividend of 
any kind on the capital stock of Company; 

            (o)    Repurchased, approved any repurchase or agreed to 
repurchase any of Company's capital stock; or 

            (p)    Suffered any material adverse change in the Business or to 
the Assets. 

    2.17    TAXES. (a)  Company has filed all tax returns (including tax 
reports and other statements) required to have been filed by it, and has paid 
all taxes (including any interest, penalty or additions thereto) required to 
have been paid by it.  All such tax returns are complete and accurate in all 
respects and properly reflect the relevant taxes for the periods covered 
thereby.    Company has not received any notice that any tax deficiency or 
delinquency has been  or may be asserted against Company.  There are no 
audits relating to taxes of Company pending or in process or, to the 
knowledge of Company, threatened.  Company is not currently the beneficiary 
of any waiver of any statute of limitations in respect of taxes nor of any 
extension of time within which to file any tax return or to pay any tax 
assessment or deficiency. There are no liens or encumbrances relating to 
taxes on or threatened against any of the assets of Company.  Company has 
withheld and paid all taxes required by law to have been withheld and paid by 
it.  Neither Company nor any predecessor of Company is or has been a party to 
any tax allocation or sharing agreement or a member of an affiliated group of 
corporations filing a consolidated Federal income tax return.   Company has 
delivered to Pentegra correct and complete copies of Company's three most 
recently filed annual state, local and Federal income tax returns, together 
with all examination reports and statements of deficiencies assessed against 
or agreed to by Company during the three calendar year period preceding the 
date of this Agreement.  Company has neither made any payments, is obligated 
to make any payments, or is a party to any agreement that under any 
circumstance could obligate it to make any payments that will not be 
deductible under Code section 280G.

    (b) No Shareholder presently intends to dispose of any of the shares of 
Pentegra Common Stock to be received hereunder nor is a party to any plan, 
arrangement or agreement for the disposition of such shares.  Company and 
Shareholders have no knowledge, after due inquiry, of any such intent, plan, 
arrangement or agreement by any Shareholder.   Nothing contained herein shall 
prohibit Shareholders from selling such shares of Pentegra Common Stock after 
the designated holding period and in accordance with SECTION 12.1 hereof. 

    2.18    COMMISSIONS AND FEES.  There are no claims for brokerage 
commissions or finder's or similar fees in connection with the transactions 
contemplated by this Agreement which may be now or hereafter asserted against 
Pentegra, Company or Company's shareholders resulting from any action taken 
by Company or any Shareholder or their respective agents or employees, or any 
of them.

    2.19    LIABILITIES; DEBT.  Except to the extent reflected or reserved 
against on the Balance Sheet, Company did not have, as of the Balance Sheet 
Date, and has not incurred since that date and will not have incurred as of 
the Closing Date, any liabilities or obligations of any nature, whether 
accrued, absolute, contingent or otherwise, and whether due or to become due, 
other than those incurred in the ordinary course of business or as set forth 
on EXHIBIT 2.16.  Company and Shareholders do not know, or have reasonable 
grounds to know, of any basis for the assertion against Company or any 
Shareholder as of the Balance Sheet Date, of any claim or liability of any 
nature in any amount not fully reflected or reserved against on the Balance 
Sheet, or of any claim or liability of any nature arising since that date 
other than those incurred in the ordinary course of business or contemplated 
by this Agreement.  All indebtedness of Company (including without 
limitation, indebtedness for borrowed money, guaranties and capital lease 
obligations) is described on EXHIBIT 2.19 attached hereto.

                                       7

<PAGE>

    2.20    INSURANCE POLICIES.  Company, each Shareholder and each licensed 
professional of Company carries property, liability, malpractice, workers' 
compensation and such other types of insurance as is customary in the 
industry. Valid and enforceable policies in such amounts are outstanding and 
duly in force and will remain duly in force through the Closing Date.  All 
such policies are described in EXHIBIT 2.20 attached hereto and true and 
correct copies have been delivered to Pentegra.   Neither Shareholders nor 
Company have not received notice or other communication from the issuer of 
any such insurance policy cancelling or amending such policy or threatening 
to do so.  Neither Company, nor any Shareholder nor any licensed professional 
employee of Company has any outstanding claims, settlements or premiums owed 
against any insurance policy.

    2.21    EMPLOYEE BENEFIT PLANS.  Except as set forth on EXHIBIT 2.21 
attached hereto, Company has neither established, nor maintains, nor is 
obligated to make contributions to or under or otherwise participate in, (a) 
any bonus or other type of compensation or employment plan, program, 
agreement, policy, commitment, contract or arrangement (whether or not set 
forth in a written document); (b) any pension, profit-sharing, retirement or 
other plan, program or arrangement; or (c) any other employee benefit plan, 
fund or program, including, but not limited to, those described in SECTION 
3(3) of the Employee Retirement Income Security Act of 1974, as amended 
("ERISA").  All such plans listed on EXHIBIT 2.20 (individually "Company 
Plan," and collectively "Company Plans") have been operated and administered 
in all material respects in accordance with all applicable laws, rules and 
regulations, including without limitation, ERISA, the Internal Revenue Code 
of 1986, as amended, Title VII of the Civil Rights Act of 1964, as amended, 
the Equal Pay Act of 1967, as amended, the Age Discrimination in Employment 
Act of 1967, as amended, and the related rules and regulations adopted by 
those Federal  agencies responsible for the administration of such laws.  No 
act or failure to act by Company has resulted in a "prohibited transaction" 
(as defined in ERISA) with respect to the Company Plans.  No "reportable 
event" (as defined in ERISA) has occurred with respect to any of the Company 
Plans.  Company has not previously made, is not currently making, and is not 
obligated in any way to make, any contributions to any multiemployer plan 
within the meaning of the Multi-Employer Pension Plan Amendments Act of 1980. 
 With respect to each Company Plan, either (i) the value of plan assets 
(including commitments under insurance contracts) is at least equal to the 
value of plan liabilities or (ii) the value of plan liabilities in excess of 
plan assets is disclosed on the Balance Sheet, all as of the Closing Date.

    2.22    ADVERSE AGREEMENTS.  Company is not, and will not be as of the 
Closing Date, a party to any agreement or instrument or subject to any 
charter or other corporate restriction or any judgment, order, writ, 
injunction, decree, rule or regulation that materially and adversely affects 
the condition (financial or otherwise), operations, assets, liabilities, 
business or prospects of Company, the Business or the Assets.

    2.23    COMPLIANCE WITH LAWS IN GENERAL.  Company, Shareholders and 
Company's licensed professional employees, and the conduct of the Business 
and use of the Assets, have complied with all applicable laws, rules, 
regulations and licensing requirements, including, without limitation, the 
Federal Environmental Protection Act, the Occupational Safety and Health Act, 
the Americans with Disabilities Act and any environmental laws and medical 
waste laws, and there exist no violations by Company, any Shareholder or any 
licensed professional employee of Company of any Federal, state or local law 
or regulation.  Company and Shareholders have not received any notice of a 
violation of any Federal, state and local laws, regulations and ordinances 
relating to the operations of the Business and Assets and no notice of any 
pending inspection or violation of any such law, regulation or ordinance has 
been received by Company. 

    2.24    THIRD PARTY PAYORS.   Company, Shareholders and each licensed 
professional employee or independent contractor of Company has timely filed 
all claims or other reports required to be filed with respect to the purchase 
of services by third-party payors, and all such claims or reports are 
complete and accurate, and has no liability to any payor with respect 
thereto.  There are no pending appeals, overpayment determinations, 
adjustments, challenges, audit, litigation or notices of intent to open 
Medicare or Medicaid claim determinations or other reports required to be 
filed by Company, any Shareholder and each licensed professional employee of 
Company.  Neither Company, nor any Shareholder, nor any licensed professional 
employee of Company has been convicted of, or pled guilty or nolo contendere 
to, patient abuse or negligence, or any other Medicare or Medicaid program 
related offense and none has committed any offense which may serve as the 
basis for suspension or exclusion from the Medicare and Medicaid programs or 
any other third party payor program.  With respect to payors, Company, 
Shareholders and Company's licensed professional employees has not (a) 
knowingly and willfully making or causing to be made a false statement 

                                       8

<PAGE>

or representation of a material fact in any application for any benefit or 
payment; (b) knowingly and willfully making or causing to be made any false 
statement or representation of a material fact for use in determining rights 
to any benefit or payment; (c) failed to disclose knowledge of the occurrence 
of any event affecting the initial or continued right to any benefit or 
payment on its own behalf or on behalf of another, with the intent to 
fraudulently secure such benefit or payment; and (d) violated any applicable 
state anti-remuneration or self-referral statutes, rules or regulations. 

    2.25    NO UNTRUE REPRESENTATIONS.  No representation or warranty by 
Company or Shareholders in this Agreement, and no Exhibit or certificate 
issued or executed by, or information furnished by, officers or directors of 
Company or any Shareholder and furnished or to be furnished to Pentegra 
pursuant hereto, or in connection with the transactions contemplated hereby, 
contains or will contain any untrue statement of a material fact, or omits or 
will omit to state a material fact necessary to make the statements or facts 
contained therein not misleading.

    2.26    BANKING RELATIONS.  Set forth in EXHIBIT 2.26 is a complete and 
accurate list of all arrangements that Company has with any bank or other 
financial institution, indicating with respect to each relationship the type 
of arrangement maintained (such as checking account, borrowing arrangements, 
safe deposit box, etc.) and the person or persons authorized in respect 
thereof.

    2.27    OWNERSHIP INTERESTS OF INTERESTED PERSONS; COMPETITORS.  No 
officer, employee, director or stockholder of Company, or their respective 
spouses, children or affiliates, owns directly or indirectly, on an 
individual or joint basis, any interest in, has a compensation or other 
financial arrangement with, or serves as an officer or director of, any 
customer or supplier or competitor of Company or any organization that has a 
material contract or arrangement with Company. 

    2.28    PAYORS.  EXHIBIT 2.28 sets forth a true, complete and correct 
list of the names and addresses of each payor of Company's services which 
accounted for more than 10% of revenues of Company in the preceding fiscal 
year.  Company has good relations with all such payors and other material 
payors of Company and none of such payors has notified Company that it 
intends to discontinue its relationship with Company or to deny any claims 
submitted to such payor for payment. 

SECTION 3.  REPRESENTATIONS AND WARRANTIES OF PENTEGRA.

    Pentegra hereby represents and warrants to Company and Shareholders as 
follows:

    3.1     CORPORATE EXISTENCE: GOOD STANDING.  Pentegra is a corporation 
duly organized and existing and in good standing under the laws of the State 
of Delaware. 

    3.2     POWER AND AUTHORITY; CONSENTS.  Pentegra has corporate power to 
execute, deliver and perform this Agreement and all agreements and other 
documents executed and delivered by it pursuant to this Agreement or to be 
executed and delivered on the Closing Date, and has taken all actions 
required by law, its Certificate of Incorporation, its Bylaws or otherwise, 
to authorize the execution, delivery and performance of this Agreement and 
such related documents.   This Agreement and all agreements and documents 
executed and delivered in connection herewith have been, or will be as of the 
Closing Date, duly executed and delivered by Pentegra and constitute or will 
constitute the legal, valid and binding obligations of Pentegra, enforceable 
against Pentegra in accordance with their respective terms, except as may be 
limited by applicable bankruptcy, insolvency or similar laws affecting 
creditors' rights generally or the availability of equitable remedies.  The 
execution and delivery of this Agreement, and the agreements executed and 
delivered pursuant to this Agreement or to be executed and delivered on the 
Closing Date, do not, and, the consummation of the actions contemplated 
hereby will not, violate any provision of the Certificate of Incorporation or 
Bylaws of Pentegra or any provisions of, or result in the acceleration of, 
any obligation under any mortgage, lien, lease, agreement, rent, instrument, 
order, arbitration award, judgment or decree to which Pentegra is a party or 
by which Pentegra is bound, or violate any material restrictions of any kind 
to which Pentegra is subject, or result in any lien or encumbrance on any of 
Pentegra's assets.  Other than as have been obtained or as would not have a 
material adverse effect, there are no consents of any person or entity 
required for the transaction contemplated hereby on behalf of Pentegra.

                                       9

<PAGE>

    3.3     PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS.  All building 
or other permits, certificates of occupancy, concessions, grants, franchises, 
licenses, certificates of need and other governmental authorizations and 
approvals required for the conduct of the business of Penegra or waivers 
thereof, have been duly obtained and are in full force and effect, except as 
would not have a material adverse effect upon Pentegra.  Other than as would 
not have a material adverse effect, there are no proceedings pending or, to 
the knowledge of Pentegra, threatened, which may result in the revocation, 
cancellation or suspension, or any adverse modification, of any such licenses 
or permits. 
    
    3.4     LEGAL PROCEEDINGS.  Other than as would not have a material 
adverse effect, neither Pentegra nor its business or assets is subject to any 
pending, nor does Pentegra have knowledge of any threatened, litigation, 
governmental investigation, condemnation or other proceeding against or 
relating to or affecting Pentegra, its business, assets or the transactions 
contemplated by this Agreement, and, to the knowledge of Pentegra, no basis 
for any such action exists, nor is there any legal impediment of which 
Pentegra has knowledge to the continued operation of its business or the use 
of its Assets in the ordinary course. 

    3.5     TAXES.  Pentegra has filed all tax returns (including tax reports 
and other statements) required to have been filed by it, and has paid all 
taxes (including any interest, penalty or additions thereto) required to have 
been paid by it, other than as would not have a material adverse effect.  
Pentegra has not received any notice that any tax deficiency or delinquency 
has been  or may be asserted against Pentegra.  There are no audits relating 
to taxes of Pentegra pending or in process or, to the knowledge of  Pentegra, 
threatened. Pentegra is not currently the beneficiary of any waiver of any 
statute of limitations in respect of taxes nor of any extension of time 
within which to file any tax return or to pay any tax assessment or 
deficiency. 

    3.6     COMMISSIONS AND FEES.  Pentegra has not incurred any obligation 
for any finder's, broker's or similar fees in connection with the 
transactions contemplated hereby.

    3.7     CAPITAL STOCK.  The issuance and delivery by Pentegra of shares 
of Pentegra Common Stock in connection with the reorganization contemplated 
hereby will be as of the Closing Date duly and validly authorized by all 
necessary corporate action on the part of Pentegra.  The Pentegra Common 
Stock to be issued in connection with the reorganization contemplated hereby, 
when issued in accordance with the terms of this Agreement, will be validly 
issued, fully paid and nonassessable.  

    3.8     NO UNTRUE REPRESENTATIONS.  No representation or warranty by 
Pentegra in this Agreement, and no Exhibit or certificate issued by officers 
or directors of Pentegra and furnished or to be furnished to Company  or any 
Shareholder pursuant hereto, or in connection with the transactions 
contemplated hereby, contains or will contain any untrue statement of a 
material fact, or omits or will omit to state a material fact necessary to 
make the statements or facts contained therein not misleading.

SECTION 4.  COVENANTS OF COMPANY AND SHAREHOLDERS.

    Company and Shareholders, jointly and severally, agree that between the 
date hereof and the Closing Date:

    4.1     CONSUMMATION OF AGREEMENT; EXHIBITS.  Company and Shareholders 
shall use their best efforts to cause the consummation of the transactions 
contemplated hereby in accordance with their terms and conditions.  Company 
and Shareholders agree to complete the Exhibits hereto to be provided by them 
in form and substance satisfactory to Pentegra.

    4.2     BUSINESS OPERATIONS.  Company and Shareholders shall operate the 
Business and use the Assets in the ordinary course.  Company and Shareholders 
shall not enter into any lease, contract, indebtedness, commitment, purchase 
or sale or acquire or dispose of any capital asset relating to the Business 
or the Assets except in the ordinary course of business.  Company and 
Shareholders shall use their best efforts to preserve the Business and Assets 
intact and shall not take any action that would have an adverse effect on the 
Business or Assets.  Company and Shareholders shall use their best efforts to 
preserve intact the relationships with payors, customers, suppliers, patients 
and others 

                                       10

<PAGE>

having significant business relations with Company.  Company and Shareholders 
shall collect its receivables and pay its trade payables in the ordinary 
course of business.  Company and Shareholdes shall not introduce any new 
method of management, operations or accounting. 

    4.3     ACCESS AND NOTICE.  Company and Shareholders shall permit 
Pentegra and its authorized representatives access to, and make available for 
inspection, all of the assets and business of Company, the Business and the 
Assets, including employees, customers and suppliers and permit Pentegra and 
its authorized representatives to inspect and make copies of all documents, 
records and information with respect to the business or assets of Company, 
the Business or the Assets as Pentegra or its representatives may request.  
Company and Shareholders shall promptly notify Pentegra in writing of (a) any 
notice or communication relating to a default or event that, with notice or 
lapse of time or both, could become a default, under any contract, commitment 
or obligation to which Company is a party or relating to the Business or the 
Assets, and (b) any adverse change in Company's or the Business' financial 
condition or the Assets.

    4.4     APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS.  Company and 
Shareholders shall use their best efforts to secure all necessary approvals 
and consents of third parties to the consummation of the transactions 
contemplated hereby, including consents described on EXHIBIT 2.4.  Company 
and Shareholders shall use their best efforts to obtain all licenses, 
permits, approvals or other authorizations required under any law, rule, 
regulation, or otherwise to provide the services of the Practice contemplated 
by the Service Agreement and to conduct the intended business of the Practice 
and operate the Business and use the Assets.

    4.5     ACQUISITION PROPOSALS.  From the execution of this Agreement 
until the earlier of Closing or the termination of this Agreement in 
accordance with the provisions hereof, Company and Shareholders shall not, 
and shall use its best efforts to cause Company's employees, agents and 
representatives not to, initiate, solicit or encourage, directly or 
indirectly, any inquiries or the making or implementation of any proposal or 
offer, including without limitation, any proposal or offer to any 
Shareholder, with respect to a merger, acquisition, consolidation or similar 
transaction involving, or the purchase of all or any significant portion of 
the assets or any equity securities of Company or engage in any negotiations 
concerning, or provide any confidential information or data to, or have any 
discussions with, any person relating to such proposal or offer, and Company 
and Shareholders will immediately cease any such activities, discussions or 
negotiations heretofore conducted with respect to any of the foregoing.  
Company and Shareholders shall immediately notify Pentegra if any such 
inquiries or proposals are received.

    4.6     FUNDING OF ACCRUED EMPLOYEE BENEFITS.  Company hereby covenants 
and agrees that it will take whatever steps are necessary to pay or fund 
completely for any accrued benefits, where applicable, or vested accrued 
benefits for which Company or any entity might have any liability whatsoever 
arising from any insurance, pension plan,  employment tax or similar 
liability of Company to any employee or other person or entity (including, 
without limitation, any Company Plan and any liability under employment 
contracts with Company) allocable to services performed prior to the Closing 
Date.  Company and Shareholders acknowledge that the purpose and intent of 
this covenant is to assure that Pentegra shall have no unfunded liability 
whatsoever at any time after the Closing Date with respect to any of 
Company's employees or similar persons or entities, including, without 
limitation, any Company Plan for the period prior to the Closing Date.

    4.7     EMPLOYEE MATTERS.  Company shall not, without the prior written 
approval of Pentegra, except as required by law, increase the cash 
compensation of any Shareholder (other than in the ordinary course of 
business) or other employee or an independent contractor of Company, adopt, 
amend or terminate any compensation plan, employment agreement, independent 
contractor agreement, employee policies and procedures or employee benefit 
plan, take any action that could deplete the assets of any employee benefit, 
or fail to pay any premium or contribution due or file any report with 
respect to any employee benefit plan, or take any other actions with respect 
to its employees or employee matters which might have an adverse effect upon 
Company, its business, assets or prospects.

    4.8     DISTRIBUTIONS AND REPURCHASES.  No distribution, payment or 
dividend of any kind will be declared or paid by Company, nor will any 
repurchase of any of Company's capital stock be approved or effected.

                                       11

<PAGE>

    4.9     REQUIREMENTS TO EFFECT REORGANIZATION.  Company and Shareholders 
shall use their best efforts to take, or cause to be taken, all actions 
necessary to effect the reorganization contemplated hereby under applicable 
law. 

    4.10    ACCOUNTING AND TAX MATTERS.  Company and Shareholders will not 
change in any material respect the tax or financial accounting methods or 
practices followed by Company (including any material change in any 
assumption underlying, or any method of calculating, any bad debt, 
contingency or other reserve), except as may be required by law or  generally 
accepted accounting principles.  Company and Shareholders will duly, 
accurately and timely (without regard to any extensions of time) file all 
returns, information statements and other documents relating to taxes of 
Company required to be filed by it, and pay all taxes required to be paid by 
it, on or before the Closing Date.

    4.11    WAIVER OF BULK TRANSFER COMPLIANCE.  Pentegra, Shareholders and 
Company hereby waive any compliance with the applicable state Bulk Transfers 
Act, if any.   Company and Shareholders covenant and agree that all of the 
creditors with respect to the Business and the Assets will be paid in full by 
Company prior to the Closing Date, except to extent that any liability to 
such creditors is assumed by Pentegra pursuant to this Agreement.  If 
required by Pentegra, Company and Shareholders  shall furnish Pentegra with 
proof of payment of all creditors with respect to the Business and the 
Assets.  Notwithstanding the foregoing, Company and Shareholders may dispute 
the validity or amount of any such creditor's claim without being deemed to 
be in violation of this SECTION 4.11, provided that such dispute is in good 
faith and does not unreasonably delay the resolution of the claim and 
provided, further that Company and Shareholders agree to indemnify and bond 
Pentegra for such amounts as is satisfactory to Pentegra. 

    4.12    LEASE.  If Company leases any of its premises from any 
Shareholder or other affiliate of Company or any shareholder of Company, 
Pentegra shall have entered into a building lease (the "Building Lease") with 
the owner of such premises on terms and conditions satisfactory to Pentegra, 
the terms and conditions of which shall include, without limitation, (i) a 
five year initial term plus three five-year renewal options, (ii) a lease 
rate equal to the fair market value lease rate, as agreed to by Pentegra, and 
(iii) such other provisions to be acceptable to Pentegra.

    4.13    HIRING OF EMPLOYEES.  Company and Shareholders shall cooperate 
with all requests made by Pentegra for the purpose of allowing Pentegra to 
hire those non-dentist employees of Company designated by Pentegra, such 
employment to be effective as of the Closing Date.  Notwithstanding the 
above, Company and Shareholders shall remain liable under any Company Plans 
for any claims incurred by any employees or their spouses or dependents, and 
for all compensation, bonuses, benefits and other such items and other 
liabilities related to Company's employees incurred by Company prior to the 
Closing Date.  

    4.14    EMPLOYEE BENEFIT PLANS.  Company agrees and acknowledges that all 
employees of Company hired by Pentegra pursuant to SECTION 4.13  above, shall 
be treated as "leased employees" (as defined in Code Section 414(n)) of 
Company and shall be treated as Clinic employees for purposes of eligibility 
and participation in Company Plans. 

    4.15    INSURANCE.  Company shall cause Pentegra and its affiliates to be 
named as an additional insured on its liability insurance programs, effective 
as of the Closing Date. 

    4.16    FORMATION OF THE PRACTICE.  The Shareholders shall have formed a 
limited liability company, partnership or other legal entity (the "Practice") 
approved by Pentegra for the purpose of practicing dentistry and entering 
into the Service Agreement.  The Practice shall be duly organized, in 
existing and in good standing under the laws of the State in which the 
practice of dentistry is conducted by the Shareholders and the Practice.  The 
Practice shall have all necessary power to own all of its assets and to carry 
on its business as such business is now being conducted.  The Shareholders 
shall be the sole member/shareholder/partner of the Practice and own all such 
interests free of all security interests, claims, encumbrances and liens.  
Each interest in the Practice shall be legally and validly issued and fully 
paid and nonassessable. There shall be no outstanding (a) bonds, debentures, 
notes or other obligations the holders of which have the right to vote with 
the members/partners/shareholders of the Practice on any matter, (b) 
securities of the Practice convertible into equity interests in the Practice, 
or (c) commitments, options, rights or warrants to issue any such equity 
interests in the Practice, to issue securities of the Practice convertible 
into such equity interests, or to redeem any securities of the Practice. No 
interests of the Practice shall have been issued or disposed of in violation 
of the preemptive rights, rights of first refusal or similar rights of any of 
the Practice's members/partners/shareholders. The Practice shall quality to 
do business as a foreign entity in any other state or jurisdiction by reason 
of its business, 

                                       12

<PAGE>

properties or activities in or relating to such other state or jurisdiction.  
 The Company shall have transferred the Excluded Assets set forth on EXHIBIT 
4.16 to the Practice and shall have caused the Practice to assume the 
Excluded Liabilities set forth on EXHIBIT 4.16 in exchange for equity 
interest in the Practice, and the Company shall have distributed such equity 
interests in the Practice to the Shareholders.

    4.17    CORPORATE RECORDS.  True and correct copies of the Articles of 
Organization/Partnership Agreement\Articles of Incorporation, 
Bylaws/Regulations and minutes of the Practice and all amendments thereto of 
the Practice shall have been delivered to Pentegra and shall be in form and 
substance satisfactory to Pentegra.  The minute books of the Practice shall 
contain all accurate minutes of the meetings of and consents to actions taken 
without meetings of the members\managers/partners/board of directors of the 
Practice since its formation.  The books of account of the Practice shall 
have been kept accurately in the ordinary course of business and the 
revenues, expenses, assets and liabilities of the Practice shall have been 
properly recorded in such books.

    4.18    POWER AND AUTHORITY FOR TRANSACTIONS.  The Practice shall have 
the power to execute, deliver and perform its obligations under all 
agreements and other documents to be executed and delivered by it pursuant to 
this Agreement, including without limitation, the Service Agreement and each 
Employment Agreement or to be executed and delivered on the Closing Date, and 
has taken all action required by law, its Organization/Partnership 
Agreement/Articles of Incorporation, its Bylaws/Regulations or otherwise, to 
authorize the execution, delivery and performance of such documents.  The 
Service Agreement, the Employment Agreement and the other agreements 
contemplated hereby shall have been duly executed and delivered by the 
Practice and constitute or will constitute the legal, valid and binding 
obligations of the Practice enforceable against the Practice in accordance 
with their respective terms, except as may be limited by applicable 
bankruptcy, insolvency or similar laws affecting creditors' rights generally 
or the availability of equitable remedies.  The execution and delivery of the 
Service Agreement, the Employment Agreements and the other agreements 
contemplated hereby will not violate any provision of the organizational 
documents of the Practice or any provisions of, or result in the acceleration 
of, any obligation under any mortgage, lien, lease, agreement, rent, 
instrument, order, arbitration award, judgment or decree to which the 
Practice is a party or by which the Practice is bound, or violate any 
material restrictions of any kind to which the Practice is subject, or result 
in any lien or encumbrance on any of the Practice's assets. 

    4.19    NO BUSINESS.  Other than its Articles of Organization/Partnership 
Agreement/Articles of Incorporation, Bylaws/Regulations and as of the Closing 
Date, the Service Agreement and the Employment Agreements, the Practice shall 
not be a party to or subject to any agreement, indenture or other instrument. 

    4.20    COMPLIANCE WITH LAWS.  The Practice shall have complied with all 
applicable laws, regulations and licensing requirements and have filed with 
the proper authorities all necessary statements and reports.

SECTION 5.  COVENANTS OF PENTEGRA. 

    Pentegra agrees that between the date hereof and the Closing: 

    5.1     CONSUMMATION OF AGREEMENT; EXHIBITS.  Pentegra shall use its best 
efforts to cause the consummation of the transactions contemplated hereby in 
accordance with their terms and provisions.   Pentegra agrees to complete the 
Exhibits hereto to be provided by it. 

    5.2     APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS.  Pentegra 
shall use its best efforts to secure all necessary approvals and consents of 
third parties to the consummation of the transactions contemplated hereby. 

                                       13

<PAGE>

SECTION 6.  COVENANTS OF PENTEGRA AND COMPANY AND SHAREHOLDERS. 

    Pentegra, Shareholders  and Company agree as follows: 

    6.1     FILINGS; OTHER ACTIONS.   Pentegra, Company and Shareholders 
shall cooperate to promptly prepare and file with the Securities Exchange 
Commission ("SEC")  the Registration Statement on Form S-1 (or other 
appropriate Form) to be filed by Pentegra in connection with its Initial 
Public Offering (including the prospectus constituting a part thereof, the 
"Registration Statement"). Pentegra shall obtain all necessary state 
securities laws or "Blue Sky" permits and approvals required to carry out the 
transactions contemplated by this Agreement and the Company and Shareholders 
shall furnish all information concerning Company and Shareholders as may be 
reasonable requested in connection with any such action.

    Company and Shareholder represent and warrant that none of the 
information or documents supplied or to be supplied by it specifically for 
inclusion in the Registration Statement, by exhibit or otherwise, will, at 
the time the Registration Statement and each amendment or supplement thereto, 
if any, becomes effective under the Securities Act of 1933, contain any 
untrue statement of a material fact or omit to state any material fact 
required to be stated therein or necessary to make the statements therein, in 
light of the circumstances under which they were made, not misleading.  
Company and Shareholders shall be entitled to review the Registration 
Statement and each amendment thereto, if any, prior to the time each becomes 
effective under the Securities Act of 1933.

    Company and Shareholders shall furnish Pentegra will all information 
concerning themselves, their subsidiaries, if any, directors, officers and 
stockholders and such other matters as may be reasonable requested by 
Pentegra in connection with the preparation of the Registration Statement and 
each amendment or supplement thereto, or any other statement, filing, notice 
or application made by or on behalf of each such party or any of its 
subsidiaries to any governmental entity in connection with the transactions 
contemplated by the Other Agreements or this Agreement.

SECTION 7.  PENTEGRA CONDITIONS PRECEDENT.

    The obligations of Pentegra hereunder are subject to the fulfillment at 
or prior to the Closing of each of the following conditions:

    7.1     REPRESENTATIONS AND WARRANTIES.  The representations and 
warranties of Company and Shareholders contained herein shall have been true 
and correct in all respects when initially made and shall be true and correct 
in all respects as of the Closing Date. 

    7.2     COVENANTS AND CONDITIONS.  Company and Shareholders shall have 
performed and complied with all covenants and conditions required by this 
Agreement to be performed and complied with by Company and Shareholders prior 
to the Closing Date.

    7.3     PROCEEDINGS.  No action, proceeding or order by any court or 
governmental body shall have been threatened orally or in writing, asserted, 
instituted or entered to restrain or prohibit the carrying out of the 
transactions contemplated hereby.

    7.4     NO MATERIAL ADVERSE CHANGE.  No material adverse change in the 
condition (financial or otherwise), operations, assets, liabilities, business 
or prospects of Company shall have occurred since the Balance Sheet Date.

    7.5     DUE DILIGENCE REVIEW.  By the Closing Date, Pentegra shall have 
completed a due diligence review of the business, operations and financial 
statements of Company, the Business and the Assets, the results of which 
shall be satisfactory to Pentegra in its sole discretion. 

    7.6     APPROVAL BY THE BOARD OF DIRECTORS.  This Agreement and the 
transactions contemplated hereby shall have been approved by the Board of 
Directors of Pentegra or a committee thereof. 

                                       14

<PAGE>

    7.7     SERVICE AGREEMENT; GUARANTY AGREEMENT.  The Practice and Pentegra 
shall have executed and delivered a Service Agreement (the "Service 
Agreement"), in substantially the form attached hereto as EXHIBIT 7.7, 
pursuant to which Pentegra will provide management services to the Practice. 
Each Shareholder shall have executed and delivered a Guaranty Agreement in 
substantially the form attached as EXHIBIT 4.10 of the Service Agreement 
pursuant to which Shareholder shall, among other things, guaranty the 
obligations of the Practice under the Service Agreement. 

    7.8     EMPLOYMENT ARRANGEMENTS.  Company shall have terminated, and 
caused each shareholder of Company that has an existing employment agreement 
with Company to have terminated his or her employment agreement with Company 
and shall have executed an employment agreement ("Employment Agreement") with 
the Practice in form and substance attached hereto as EXHIBIT 7.8 and 
otherwise satisfactory to Company and Pentegra. 

    7.9     CONSENTS AND APPROVALS.  Company and Shareholders shall have 
obtained all necessary government and other third-party approvals and 
consents.

    7.10    CLOSING DELIVERIES.  Pentegra shall have received all documents, 
duly executed in form satisfactory to Pentegra and its counsel, referred to 
in SECTION 9.1.

    7.11    DEBT AND RECEIVABLES.  There shall be no indebtedness, 
receivables or payables between Company and its shareholders or affiliates 
and Company shall not have any liabilities, including indebtedness, 
guaranties and capital leases, that are not set forth on EXHIBIT 2.19. 

    7.12    INSURANCE.  Company and Shareholders shall have named Pentegra as 
an additional insured on their liability insurance program in accordance with 
SECTION 4.15.

    7.13    NO CHANGE IN WORKING CAPITAL.  There shall have been no material 
change in the working capital of Company since the Balance Sheet Date. 

    7.14    SECURITIES APPROVAL.  The Registration Statement shall have 
become effective under the Securities Act and no stop order suspending the 
effectiveness of the Registration Statement shall have been issued and no 
proceedings for that purpose shall have been initiated or threatened by the 
SEC. At or prior to the date that the Registration Statement is declared 
effective by the SEC, Pentegra shall have received all state securities and 
"Blue Sky" permits necessary to consummate the transactions contemplated 
hereby.  The Pentegra Common Stock shall have been approved for listing on 
Nasdaq or other exchange selected by Pentegra, subject only to official 
notification of issuance.  

SECTION 8.  COMPANY'S AND SHAREHOLDERS' CONDITIONS PRECEDENT.

    The obligations of Company and Shareholders hereunder are subject to 
fulfillment at or prior to the Closing of each of the following conditions:

    8.1     REPRESENTATIONS AND WARRANTIES.  The representations and 
warranties of Pentegra contained herein shall have been true and correct in 
all respects when initially made and shall be true and correct in all 
respects as of the Closing Date.

    8.2     COVENANTS AND CONDITIONS.  Pentegra shall have performed and 
complied with all covenants and conditions required by this Agreement to be 
performed and complied with by Pentegra prior to the Closing Date.

    8.3     PROCEEDINGS.  No action, proceeding or order by any court or 
governmental body shall have been threatened orally or in writing, asserted, 
instituted or entered to restrain or prohibit the carrying out of the 
transactions contemplated hereby.

    8.4     CLOSING DELIVERIES.  Company shall have received all documents, 
duly executed in form satisfactory to Company and its counsel, referred to in 
SECTION 9.2.

                                       15

<PAGE>

    8.5     SECURITIES APPROVAL.  The Registration Statement shall have 
become effective under the Securities Act and no stop order suspending the 
effectiveness of the Registration Statement shall have been issued and no 
proceedings for that purpose shall have been initiated or threatened by the 
SEC. At or prior to the date that the Registration Statement is declared 
effective by the SEC, Pentegra shall have received all state securities and 
"Blue Sky" permits necessary to consummate the transactions contemplated 
hereby.  The Pentegra Common Stock shall have been approved for listing on 
Nasdaq or other exchange selected by Pentegra, subject only to official 
notification of issuance.

SECTION 9.  CLOSING DELIVERIES.

    9.1     DELIVERIES OF COMPANY AND SHAREHOLDERS. Within five business days 
after requested by Pentegra, Company and Shareholders shall deliver to 
Pentegra the following, all of which shall be in a form satisfactory to 
counsel to Pentegra and shall be held by Jackson & Walker, L.L.P. (counsel 
for Pentegra) in escrow pending Closing, pursuant to an escrow agreement or 
letter agreement in form and substance mutually acceptable to the parties 
hereto:

            (a)    an executed original Service Agreement and executed 
originals of all documents required by that agreement, including but not 
limited to the Guaranty Agreement and security agreement referred to therein;

            (b)    executed Employment Agreements; 
    
            (c)    a copy of the resolutions of the Board of Directors of 
Company authorizing the execution, delivery and performance of this 
Agreement, the Service Agreement, the Employment Agreements and all related 
documents and agreements each certified by the Secretary as being true and 
correct copies of the original thereof;

            (d)    executed merger certificate and/or plan as required by 
applicable state law; 

            (e)    an assignment of each contract, agreement and lease being 
assigned to and assumed by Pentegra and the original stock certificates 
together with blank stock powers representing the outstanding shares of 
Company common stock;  

            (f)    certificates of the Shareholders and a duly authorized 
officer of Company dated as of the Closing Date, (i) as to the truth and 
correctness of the representations and warranties of Company and Shareholder 
contained herein; (ii) as to the performance of and compliance by Company and 
Shareholder with all covenants contained herein; and (iii) certifying that 
all conditions precedent of Company and Shareholders to the Closing have been 
satisfied;

            (g)    a certificate of the Secretary of Company certifying as to 
the incumbency of the directors and officers of Company and as to the 
signatures of such directors and officers who have executed documents 
delivered at the Closing on behalf of Company;

            (h)    a certificate, dated within 30 days of the Closing Date, 
of the Secretary of the State of incorporation of Company and any state of 
required foreign qualification of Company establishing that Company is in 
existence and is in good standing to transact business in its state of 
incorporation; 

            (i)    an opinion of counsel to Company and Shareholder opining 
as to the execution and delivery of this Agreement and the other documents 
and agreements to be executed pursuant hereto, the good standing and 
authority of Company, the enforceability of this Agreement and the other 
agreements and documents to be executed in connection herewith, and other 
matters reasonably requested by Pentegra; 
    
            (j)    non-foreign affidavits executed by Company; 

            (k)    all authorizations, consents, approvals, permits and 
licenses referred to in SECTIONS 2.3 and 2.4; 

                                       16

<PAGE>

            (l)    an executed Registration Rights Agreement between Pentegra 
and Company, in substantially the form attached hereto as EXHIBIT 9.1(L) (the 
"Registration Rights Agreement"); and

            (m)    such other instruments and documents as reasonably 
requested by Pentegra to carry out and effect the purpose and intent of this 
Agreement.

    9.2     DELIVERIES OF PENTEGRA. On or before the Closing Date, Pentegra 
shall deliver to Company and Shareholders, the following, all of which shall 
be in a form satisfactory to counsel to Company and Shareholders and shall be 
held by Jackson & Walker, L.L.P. (counsel for Pentegra) in escrow pending 
Closing, pursuant to an escrow agreement or letter agreement in form and 
substance mutually acceptable to the parties hereto:

            (a)    the Merger Consideration;

            (b)    an executed Service Agreement;

            (c)    an assumption of each contract, agreement and lease being 
assigned to and assumed by Pentegra; 

            (d)    a copy of the resolutions of the Board of Directors of 
Pentegra (or a committee thereof) authorizing the execution, delivery and 
performance of this Agreement and all related documents and agreements each 
certified by the Secretary as being true and correct copies of the original 
thereof;

            (e)    certificates of the President of Pentegra, dated as of the 
Closing Date, (i) as to the truth and correctness of the representations and 
warranties of Pentegra contained herein; (ii) as to the performance of and 
compliance by Pentegra with all covenants contained herein; and (iii) 
certifying that all conditions precedent of Pentegra to the Closing have been 
satisfied; 

            (f)    a certificate of the Secretary of Pentegra certifying as 
to the incumbency of the directors and officers of Pentegra and as to the 
signatures of such directors and officers who have executed documents 
delivered at the Closing on behalf of Pentegra; 

            (g)    certificates, dated within 30 days of the Closing Date, of 
the Secretary of the State of Delaware establishing that Pentegra is in 
existence and are in good standing to transact business in the State of 
Delaware and the State of incorporation of Company; 

            (h)    an opinion of counsel to Pentegra opining as to the 
execution and delivery of this Agreement and the other documents and 
agreements to be executed pursuant hereto, the good standing and authority of 
Pentegra, the enforceability of this Agreement and the other agreements and 
documents to be executed in connection herewith, and other matters reasonably 
requested by Company; 

            (i)    the executed Registration Rights Agreement; and

            (j)    such other instruments and documents as reasonably 
requested by Company to carry out and effect the purpose and intent of this 
Agreement. 

SECTION 10. NATURE AND SURVIVAL OF REPRESENTATIONS AND WARRANTIES; 
INDEMNIFICATION.

    10.1    NATURE AND SURVIVAL.  All statements contained in this Agreement 
or in any Exhibit attached hereto, any agreement executed pursuant hereto, 
and any certificate executed and delivered by any party pursuant to the terms 
of this Agreement, shall constitute representations and warranties of Company 
and Shareholders, jointly and severally, or of Pentegra, as the case may be.  
All such representations and warranties, and all representations and 
warranties expressly labeled as such in this Agreement shall survive the date 
of this Agreement and the Closing Date for a period of five (5) years 
following the Closing Date, except that (i) the representations and 
warranties with respect to 

                                       17

<PAGE>

environmental and medical waste laws and health care laws and matters shall 
survive for a period of fifteen (15) years and tax representations shall 
survive until one year after the expiration of the applicable statute of 
limitations. Each party covenants with the other parties not to make any 
claim with respect to such representations and warranties, against any party 
after the date on which such survival period shall terminate.  No party shall 
be entitled to claim indemnity from any other party pursuant to SECTION 10.2 
or 10.3 hereof, unless such party has timely given the notice required in 
SECTION 10.2, 10.3 or 10.4 hereof, as the case may be.  Each party hereby 
releases, acquits and discharges the other party from any and all claims and 
demands, actions and causes of action, damages, costs, expenses and rights of 
setoff with respect to which the notices required by SECTION 10.2, 10.3 or 
10.4, as applicable, are not timely provided.

    10.2    INDEMNIFICATION BY PENTEGRA.  PENTEGRA (FOR PURPOSES OF THIS 
SECTION 10.2 AND, TO THE EXTENT APPLICABLE, SECTION 10.4, "INDEMNITOR"), 
SHALL INDEMNIFY AND HOLD COMPANY AND ITS SHAREHOLDERS, AGENTS AND EMPLOYEES 
(EACH OF THE FOREGOING, INCLUDING COMPANY AND SHAREHOLDERS, FOR PURPOSES OF 
THIS SECTION 10.2 AND, TO THE EXTENT APPLICABLE, SECTION 10.4, AN 
"INDEMNIFIED PERSON"), HARMLESS FROM AND AGAINST ANY AND ALL LIABILITIES, 
LOSSES, DAMAGES, ACTIONS, SUITS, COSTS, DEFICIENCIES AND EXPENSES (INCLUDING, 
BUT NOT LIMITED TO, REASONABLE FEES AND DISBURSEMENTS OF COUNSEL THROUGH 
APPEAL) ARISING FROM OR BY REASON OF OR RESULTING FROM:

    (A)      ANY BREACH BY INDEMNITOR OF ANY REPRESENTATION, WARRANTY, 
AGREEMENT OR COVENANT CONTAINED IN THIS AGREEMENT (INCLUDING THE EXHIBITS 
HERETO) AND EACH DOCUMENT, CERTIFICATE OR OTHER INSTRUMENT FURNISHED OR TO BE 
FURNISHED BY INDEMNITOR HEREUNDER, AND 

    (B)     AFTER THE CLOSING DATE, INDEMNITOR'S OWNERSHIP OF THE ASSETS, AND

    (C)     ANY LIABILITY UNDER THE SECURITIES ACT, THE EXCHANGE ACT OR ANY 
OTHER FEDERAL OR STATE "BLUE SKY" OR SECURITIES LAWS OR REGULATION, AT COMMON 
LAW OR OTHERWISE, ARISING OUT OF OR BASED UPON ANY UNTRUE STATEMENT OR 
ALLEGED UNTRUE STATEMENT OF A MATERIAL FACT RELATING TO PENTEGRA CONTAINED IN 
ANY PRELIMINARY PROSPECTUS, THE REGISTRATION STATEMENT OR ANY PROSPECTUS 
FORMING A PART THEREOF, OR ANY AMENDMENT THEREOF OR SUPPLEMENT THERETO, 
ARISING OUT OF OR BASED UPON ANY OMISSION OR ALLEGED OMISSION TO STATE 
THEREIN A MATERIAL FACT RELATING TO PENTEGRA REQUIRED TO BE STATED THEREIN OR 
NECESSARY TO MAKE THE STATEMENTS THEREIN NOT MISLEADING.
 
IN CONNECTION WITH INDEMNITOR'S OBLIGATION TO INDEMNIFY FOR EXPENSES, 
INDEMNITOR SHALL REIMBURSE EACH INDEMNIFIED PERSON FOR ALL SUCH EXPENSES AS 
THEY ARE INCURRED BY SUCH INDEMNIFIED PERSON, PROVIDED THAT SUCH INDEMNIFIED 
PERSON AGREES IN WRITING TO REFUND ALL SUCH REIMBURSED EXPENSES IF AND TO THE 
EXTENT THAT IT IS FINALLY JUDICIALLY DETERMINED THAT SUCH INDEMNIFIED PERSON 
IS NOT ENTITLED TO INDEMNIFICATION HEREUNDER.

    10.3    INDEMNIFICATION BY COMPANY AND SHAREHOLDERS. SHAREHOLDERS AND, 
PRIOR TO THE EFFECTIVE DATE OF THE MERGER, COMPANY (FOR PURPOSES OF THIS 
SECTION 10.3 AND, TO THE EXTENT APPLICABLE, SECTION 10.4, "INDEMNITOR"), 
JOINTLY AND SEVERALLY, SHALL INDEMNIFY AND HOLD PENTEGRA AND ITS AFFILIATES, 
OFFICERS, DIRECTORS, SHAREHOLDERS, AGENTS AND EMPLOYEES (EACH OF THE 
FOREGOING, INCLUDING PENTEGRA, FOR PURPOSES OF THIS SECTION 10.3 AND, TO THE 
EXTENT APPLICABLE, SECTION 10.4, AN "INDEMNIFIED PERSON") HARMLESS FROM AND 
AGAINST ANY AND ALL LIABILITIES, LOSSES, CLAIMS, DAMAGES, ACTIONS, SUITS, 
COSTS, DEFICIENCIES AND EXPENSES (INCLUDING, BUT NOT LIMITED TO, REASONABLE 
FEES AND DISBURSEMENTS OF COUNSEL THROUGH APPEAL) ARISING FROM OR BY REASON 
OF OR RESULTING FROM OR WITH RESPECT TO:

                                       18

<PAGE>

    (A)      ANY BREACH BY INDEMNITOR OF ANY REPRESENTATION, WARRANTY, 
AGREEMENT OR COVENANT CONTAINED IN THIS AGREEMENT (INCLUDING THE EXHIBITS 
HERETO) AND EACH DOCUMENT, CERTIFICATE, OR OTHER INSTRUMENT FURNISHED OR TO 
BE FURNISHED BY INDEMNITOR HEREUNDER, 

    (B)     PRIOR TO AND AFTER THE CLOSING DATE, THE INDEMNITOR'S MANAGEMENT 
AND CONDUCT OF THE BUSINESS AND OWNERSHIP OR OPERATION OF THE ASSETS, 

    (C)     ANY ALLEGED ACT OR NEGLIGENCE OF INDEMNITOR OR ITS EMPLOYEES, 
AGENTS AND INDEPENDENT CONTRACTORS IN OR ABOUT COMPANY'S BUSINESS WHETHER ON 
OR AFTER THE CLOSING DATE,

    (D) ANY VIOLATION BY COMPANY OR ITS SHAREHOLDERS OR THEIR CONSULTANTS, 
OFFICERS, DIRECTORS, EMPLOYEES, AGENTS AND AFFILIATES OF STATE OR FEDERAL 
LAWS GOVERNING HEALTHCARE FRAUD AND ABUSE, OR ANY OVERPAYMENT OR OBLIGATION 
ARISING OUT OF OR RESULTING FROM ACTIONS OF THE COMPANY OR ITS SHAREHOLDERS 
RELATING TO CLAIMS SUBMITTED TO ANY THIRD PARTY PAYOR, WHETHER ON OR AFTER 
THE CLOSING DATE, 

    (E) TAXES OF COMPANY OR ANY SHAREHOLDER OR ANY OTHER PERSON OR ENTITY 
RELATED TO OR AFFILIATED WITH THE COMPANY OR SHAREHOLDER ARISING FROM OR AS A 
RESULT OF THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT, 
    
    (F) ANY LIABILITY OF COMPANY OR THE SHAREHOLDERS FOR COSTS AND EXPENSES 
(INCLUDING, WITHOUT LIMITATION, ATTORNEYS' FEES) INCURRED IN CONNECTION WITH 
THE NEGOTIATION, PREPARATION OF CLOSING OF THE TRANSACTIONS CONTEMPLATED BY 
THIS AGREEMENT OR THE OTHER DOCUMENTS TO BE EXECUTED IN CONNECTION HEREWITH,

    (G) ANY ACCRUED UNFUNDED RETIREMENT OR PENSION PLAN LIABILITIES, 

    (H) ANY EXCLUDED LIABILITIES (SET FORTH ON EXHIBIT 4.16), OR 

    (I)  ANY LIABILITY UNDER THE SECURITIES ACT, THE EXCHANGE ACT OR ANY 
OTHER FEDERAL OR STATE "BLUE SKY" OR SECURITIES LAWS OR REGULATION, AT COMMON 
LAW OR OTHERWISE, ARISING OUT OF OR BASED UPON ANY UNTRUE STATEMENT OR 
ALLEGED UNTRUE STATEMENT OF A MATERIAL FACT RELATING TO COMPANY OR ITS 
SHAREHOLDERS AND PROVIDED TO PENTEGRA OR ITS COUNSEL BY THE COMPANY OR ITS 
SHAREHOLDERS SPECIFICALLY FOR INCLUSION IN ANY PRELIMINARY PROSPECTUS, THE 
REGISTRATION STATEMENT OR ANY PROSPECTUS FORMING A PART THEREOF, OR ANY 
AMENDMENT THEREOF OR SUPPLEMENT THERETO, ARISING OUT OF OR BASED UPON ANY 
OMISSION OR ALLEGED OMISSION TO STATE THEREIN A MATERIAL FACT RELATING TO 
COMPANY OR ITS SHAREHOLDERS REQUIRED TO BE STATED THEREIN OR NECESSARY TO 
MAKE THE STATEMENTS THEREIN NOT MISLEADING.
   
IN CONNECTION WITH INDEMNITOR'S OBLIGATION TO INDEMNIFY FOR EXPENSES, 
INDEMNITOR SHALL REIMBURSE EACH INDEMNIFIED PERSON FOR ALL SUCH EXPENSES AS 
THEY ARE INCURRED BY SUCH INDEMNIFIED PERSON, PROVIDED THAT SUCH INDEMNIFIED 
PERSON AGREES IN WRITING TO REFUND ALL SUCH REIMBURSED EXPENSES IF AND TO THE 
EXTENT THAT IT IS FINALLY JUDICIALLY DETERMINED THAT SUCH INDEMNIFIED PERSON 
IS NOT ENTITLED TO INDEMNIFICATION HEREUNDER.

    10.4    INDEMNIFICATION PROCEDURE.  Within sixty (60) days after 
Indemnified Person receives written notice of the commencement of any action 
or other proceeding in respect of which indemnification or reimbursement may 
be sought hereunder, or within such lesser time as may be provided by law for 
the defense of such action or proceeding, such Indemnified Person shall 
notify Indemnitor thereof.  If any such action or other proceeding shall be 
brought against any Indemnified Person, Indemnitor shall, upon written notice 
given within a reasonable time following receipt by 

                                       19

<PAGE>

Indemnitor of such notice from Indemnified Person, be entitled to assume the 
defense of such action or proceeding with counsel chosen by Indemnitor and 
reasonably satisfactory to Indemnified Person; provided, however, that any 
Indemnified Person may at its own expense retain separate counsel to 
participate in such defense. Notwithstanding the foregoing, Indemnified 
Person shall have the right to employ separate counsel at Indemnitor's 
expense and to control its own defense of such action or proceeding if, in 
the reasonable opinion of counsel to such Indemnified Person, (a) there are 
or may be legal defenses available to such Indemnified Person or to other 
Indemnified Persons that are different from or additional to those available 
to Indemnitor and which could not be adequately advanced by counsel chosen by 
Indemnitor, or (b) a conflict or potential conflict exists between Indemnitor 
and such Indemnified Person that would make such separate representation 
advisable; provided, however, that in no event shall Indemnitor be required 
to pay fees and expenses hereunder for more than one firm of attorneys of 
Indemnified Person in any jurisdiction in any one action or proceeding or 
group of related actions or proceedings.  Indemnitor shall not, without the 
prior written consent of any Indemnified Person, settle or compromise or 
consent to the entry of any judgment in any pending or threatened claim, 
action or proceeding to which such Indemnified Person is a party unless such 
settlement, compromise or consent includes an unconditional release of such 
Indemnified Person from all liability arising or potentially arising from or 
by reason of such claim, action or proceeding.

    10.5    RIGHT OF SETOFF.  In the event of any breach of warranty, 
representation, covenant or agreement by Company or any Shareholder giving 
rise to indemnification under SECTION 10.3 or SECTION 10.4 hereof, Pentegra 
shall be entitled to offset the amount of damages incurred by it as a result 
of such breach of warranty, representation, covenant or agreement against any 
amounts payable by Pentegra, including the amounts payable under the Service 
Agreement.  

SECTION 11. TERMINATION.  This Agreement may be terminated:

    (a)     at any time by mutual agreement of all parties;

    (b)     at any time by Pentegra if any representation or warranty of 
Company or any Shareholder contained in this Agreement or in any certificate 
or other document executed and delivered by Company or any Shareholder 
pursuant to this Agreement is or becomes untrue or breached in any material 
respect or if Company or any Shareholder fails to comply in any material 
respect with any covenant or agreement contained herein, and any such 
misrepresentation, noncompliance or breach is not cured, waived or eliminated 
within twenty (20) days after receipt of written notice thereof;

    (c)     at any time by Company or any Shareholder if any representation 
or warranty of Pentegra contained in this Agreement or in any certificate or 
other document executed and delivered by Pentegra pursuant to this Agreement 
is or becomes untrue or breached in any material respect or if Pentegra fails 
to comply in any material respect with any covenant or agreement contained 
herein and such misrepresentation, noncompliance or breach is not cured, 
waived or eliminated within twenty (20) days after receipt of written notice 
thereof;

    (d)     by Pentegra, Shareholders or Company if the transaction 
contemplated hereby shall not have been consummated by December 31, 1997; or 

    (e)     by Pentegra at any time prior to the Closing Date if Pentegra 
determines in its sole discretion as the result of its legal, financial and 
operational due diligence with respect to Company, that such termination is 
desirable and in the best interests of Pentegra. 

SECTION 12. TRANSFER REPRESENTATIONS.  

    12.1    TRANSFER RESTRICTIONS. For a period of one year from the Closing
Date, Shareholder shall not voluntarily (a) sell, assign, exchange, transfer,
encumber, pledge, distribute, appoint or otherwise dispose of (i) any shares of
Pentegra Common Stock received by such party hereunder, (ii) any interest
(including without limitation, an option to buy or sell) in any shares of
Pentegra Common Stock, in whole or in part, and no such attempted transfer shall

                                       20

<PAGE>

be treated as effective for any purpose or (b) engage in any transaction, 
whether or not with respect to any shares of Pentegra Common Stock or any 
interest therein, the intent or effect of which is to reduce the risk of 
owning shares of Pentegra Common Stock.  The certificates evidencing the 
Pentegra Common Stock delivered to Company pursuant to the terms hereof will 
bear a legend substantially in the form set forth below and containing such 
other information as Pentegra may deem necessary or appropriate:

    The shares represented by this certificate may not be voluntarily sold,
    assigned, exchanged, transferred, encumbered, pledged, distributed,
    appointed or otherwise disposed of, and the issuer shall not be required to
    give effect to any attempted voluntary sale, assignment, exchange,
    transfer, encumbrance, pledge, distribution, appointment or other
    disposition prior to _________ [date that is one year from the Closing
    Date].  Upon the written request of the holder of this certificate, the
    issuer agrees to remove this restrictive legend (and any stop order placed
    with the transfer agent) after the date specified above.

    12.2    INVESTMENTS; COMPLIANCE WITH LAW.  Shareholders acknowledge that 
the shares of Pentegra Common Stock to be delivered to Company pursuant to 
this Agreement have not been and will not be registered under the Securities 
Act of 1933 and may not be resold without compliance with the Securities Act 
of 1933. The Pentegra Common Stock to be acquired by Shareholders pursuant to 
this Agreement is being acquired solely for its own account, for investment 
purposes only and with no present intention of distributing, selling or 
otherwise disposing of it in connection with a distribution.  Each 
Shareholder covenants, warrants and represents that none of the shares of 
Pentegra Common Stock issued to it will be offered, sold, assigned, pledged, 
hypothecated, transferred or otherwise disposed of except after full 
compliance with all of the applicable provisions of the Securities Act, as 
amended, and the rules and regulations of the Securities Exchange Commission 
and applicable state securities laws and regulations.  All certificates 
evidencing shares of Pentegra Common Stock shall bear the following legend in 
addition to the legend referenced in SECTION 12.1. 

    The shares represented hereby have not been registered under the Securities
    Act of 1933 (the "Act") and may only be sold or otherwise transferred if
    the holder hereof complies with the Act and applicable securities laws.

    In addition, certificates evidencing shares of Pentegra Common Stock 
shall bear any legend required by the securities or blue sky laws of any 
state where Company resides.

    12.3    ECONOMIC RISK; SOPHISTICATION.  Shareholders are able to bear the 
economic risk of an investment in Pentegra Common Stock  acquired pursuant to 
this Agreement and can afford to sustain a total loss of such investment and 
have such knowledge and experience in financial and business matters that 
they are capable of evaluating the merits and risks of the proposed 
investment and therefore have the capacity to protect their own interests in 
connection with the acquisition of the Pentegra Common Stock.  Shareholders 
and their representatives have had an adequate opportunity to ask questions 
and receive answers from the officers of Pentegra concerning any and all 
matters relating to the background and experience of the officers and 
directors of Pentegra, the plans for the operations of the business of 
Pentegra, and any plans for additional acquisitions and the like.  
Shareholders and their representatives have asked any and all questions in 
the nature described in the preceding sentence and all questions have been 
answered to their satisfaction.  Shareholders are "accredited investors" as 
defined in Regulation D of the Securities Act of 1933, as amended.

SECTION 13. NONDISCLOSURE OF CONFIDENTIAL INFORMATION.  Company and 
Shareholders recognize and acknowledge that they had in the past, currently 
have, and in the future may possibly have, access to certain confidential 
information of Pentegra that is valuable, special and unique assets of 
Pentegra's businesses.  Company and Shareholders agree that it will not 
disclose such confidential information to any person, firm, corporation, 
association or other entity for any purpose or reason whatsoever, unless (i) 
such information becomes available to or known by the public generally 
through no fault of Company or Shareholders, (ii) disclosure is required by 
law or the order of any governmental authority under color of law, provided, 
that prior to disclosing any information pursuant to this clause (ii), 
Company and Shareholders shall, if possible, give prior written notice 
thereof to the other parties hereto, and provide such other parties hereto 
with the opportunity to contest such disclosure, (iii) Company and 
Shareholders reasonably believe that such disclosure is required in 
connection with the defense of a lawsuit against the disclosing party, or 
(iv) Company and Shareholders are the sole and exclusive owner of such 
confidential information as a result of the transactions 

                                       21

<PAGE>

contemplated hereunder or otherwise.  In the event of a breach or threatened 
breach by Company or Shareholders of the provisions of this SECTION 13, 
Pentegra shall be entitled to an injunction restraining Company and 
Shareholders from disclosing, in whole or in part, such confidential 
information.  Nothing herein shall be construed as prohibiting Pentegra from 
pursuing any other available remedy for such breach or threatened breach, 
including the recovery of damages. The obligations of the parties under this 
SECTION 13 shall survive the termination of this Agreement.

SECTION 14. MISCELLANEOUS.

    14.1    TAX COVENANT.  The parties intend that the transactions 
contemplated by this Agreement will qualify as a reorganization within the 
meaning of Section 368(a) of the Code. The tax returns (and schedules 
thereto) of Shareholders, Company and Pentegra  shall be filed in a manner 
consistent with such intention and Shareholders and Pentegra shall each 
provide the other with such tax information, reports, returns or schedules as 
may be reasonably required to assist the other in so reporting the 
transactions contemplated hereby. 

    14.2    NOTICES.  Any communications required or desired to be given 
hereunder shall be deemed to have been properly given if sent by hand 
delivery, or by facsimile AND overnight courier, to the parties hereto at the 
following addresses, or at such other address as either party may advise the 
other in writing from time to time:

    If to Pentegra:

    Pentegra Dental Group, Inc.
    2999 N. 44th Street, Suite 650
    Phoenix, Arizona 85018
    Attn: President 
    Facsimile: (602) 952-0554 

    with a copy of each notice directed to Pentegra to:

    James S. Ryan, III, Esquire
    Jackson & Walker, L.L.P.
    901 Main Street
    Dallas, Texas  75202
    Facsimile:  (214) 953-5822

    If to Company and Shareholders: 

    To address set forth on EXHIBIT 14.2
    
    with a copy to:

    Person and address set forth on EXHIBIT 14.2

All such communications shall be deemed to have been delivered on the date of 
hand delivery or on the next business day following the deposit of such 
communications, properly addressed and postage prepaid with the overnight 
courier.

    14.3    FURTHER ASSURANCES.  Each party hereby agrees to perform any 
further acts and to execute and deliver any documents which may be reasonably 
necessary to carry out the provisions of this Agreement.

    14.4    EACH PARTY TO BEAR COSTS.  Subject to SECTION 14.12, each of the 
parties to this Agreement shall pay all of the costs and expenses incurred by 
such party in connection with the transactions contemplated by this 
Agreement, whether or not such transactions are consummated.  Without 
limiting the generality of the foregoing and whether or not such liabilities 
may be deemed to have been incurred in the ordinary course of business, 
Pentegra shall not be liable to 

                                       22

<PAGE>

or required to pay, either directly or indirectly, any fees and expenses of 
legal counsel, accountants, auditors or other persons or entities retained by 
Company or any Shareholder for services rendered in connection with 
negotiating and closing the transactions contemplated by this Agreement or 
the documents to be executed in connection herewith, whether or not such 
costs or expenses are incurred before or after the Closing Date. 

    14.5    PUBLIC DISCLOSURES.  Each party shall keep this Agreement and its 
terms confidential, and shall make no press release or public disclosure, 
either written or oral, regarding the transactions contemplated by this 
Agreement without the prior written consent of the other party, provided that 
the foregoing shall not prohibit any disclosure (a) by press release, filing 
or otherwise that Pentegra has determined in good faith judgment to be 
required by Federal  securities laws or the rules of the National Association 
of Securities Dealers, (b) to attorneys, accountants, investment bankers or 
other agents of the parties assisting the parties in connection with the 
transactions contemplated by this Agreement, and (c) by Pentegra in 
connection with the conduct of its Initial Public Offering and conducting an 
examination of the operations and assets of Company.

    14.6    GOVERNING LAW.  THIS AGREEMENT SHALL BE INTERPRETED, CONSTRUED 
AND ENFORCED IN ACCORDANCE WITH THE LAWS OF THE STATE OF INCORPORATION OF 
Company AND APPLIED WITHOUT GIVING EFFECT TO ANY CONFLICTS OF LAWS PRINCIPLES.

    14.7    CAPTIONS. The captions or headings in this Agreement are made for 
convenience and general reference only and shall not be construed to 
describe, define or limit the scope or intent of the provisions of this 
Agreement.

    14.8    INTEGRATION OF EXHIBITS.  All Exhibits attached to this Agreement 
are integral parts of this Agreement as if fully set forth herein, and all 
statements appearing therein shall be deemed disclosed for all purposes and 
not only in connection with the specific representation in which they are 
explicitly referenced.

    14.9    ENTIRE AGREEMENT/AMENDMENT.   THIS INSTRUMENT, INCLUDING ALL 
EXHIBITS ATTACHED HERETO, CONTAINS THE ENTIRE AGREEMENT OF THE PARTIES AND 
SUPERSEDES ANY AND ALL PRIOR OR CONTEMPORANEOUS AGREEMENTS BETWEEN THE 
PARTIES, WRITTEN OR ORAL, WITH RESPECT TO THE TRANSACTIONS CONTEMPLATED 
HEREBY.

    14.10   COUNTERPARTS.  This Agreement may be executed in several 
counterparts, each of which when so executed shall be deemed to be an 
original, and such counterparts shall together constitute and be one and the 
same instrument

    14.11   BINDING EFFECT/ASSIGNMENT.  This Agreement shall be binding on, 
and shall inure to the benefit of, the parties hereto, and their respective 
successors and assigns, and no other person shall acquire or have any right 
under or by virtue of this Agreement.  No party may assign any right or 
obligation hereunder without the prior written consent of the other parties; 
provided, however, that Pentegra may assign its rights and delegate its 
obligations hereunder to any entity that is an affiliate of Pentegra.  For 
purposes of this Agreement an "affiliate" of Pentegra shall include any 
entity that, through one or more intermediaries is, controlled, controlled by 
or under common control with, Pentegra.  Upon any such assignment prior to 
the Closing, all references herein to Pentegra (including those to Pentegra 
Common Stock) shall be deemed to include references to the assignee and the 
assignee's common stock.  Notwithstanding any such assignment, Pentegra shall 
not, absent a written release from Company, be relieved from its obligations 
to Company under this Agreement. 

    14.12   COSTS OF ENFORCEMENT. In the event that Pentegra, on the one 
hand, or Company, on the other hand, file suit in any court against any other 
party to enforce the terms of this Agreement against the other party or to 
obtain performance by it hereunder, the prevailing party will be entitled to 
recover all reasonable costs, including reasonable attorneys' fees, from the 
other party as part of any judgment in such suit. The term "prevailing party" 
shall mean the party in whose favor final judgment after appeal (if any) is 
rendered with respect to the claims asserted in the Complaint.  "Reasonable 
attorneys' fees" are those reasonable attorneys' fees actually incurred in 
obtaining a judgment in favor of the prevailing party.

                                       23

<PAGE>

   14.13  PRORATIONS.  Company agrees to reimburse Pentegra at Closing a 
pro rata portion of all taxes levied upon the Assets for the calendar year in 
which the Closing occurs.  Such taxes shall be estimated, apportioned and 
pro-rated among Company and Pentegra as of the Closing Date, and the prorated 
amount due Pentegra shall be credited to the cash portion of the Purchase 
Consideration. Upon payment by Pentegra of such taxes actually assessed and 
paid on the Assets, Pentegra shall calculate the apportionment of such taxes 
and shall pay Company or may demand from Company, and Company agrees to pay, 
the amount necessary to correct the estimate and proration made at Closing.

   14.14  AMENDMENTS; WAIVERS.  This Agreement may be amended, modified or 
supplemented only by an instrument in writing executed by all the parties 
hereto.  Any waiver of the terms and conditions hereof must be in writing, 
and signed by the parties hereto.  The waiver of any of the terms and 
conditions of this Agreement shall not be construed as a waiver of any other 
terms and conditions hereof.

   14.15  ARBITRATION.  Upon the request of either Pentegra or the Companys or 
Shareholders (hereinafter referred to as a "Party"), whether made before or 
after the institution of any legal proceeding, any dispute among the parties 
hereto in any way arising out of, related to, or in connection with this 
Agreement (hereinafter a "Dispute"), shall be resolved by binding arbitration 
in accordance with the terms of this Section (hereinafter the "Arbitration 
Program").

   All Disputes between the Parties shall be resolved by binding arbitration 
administered by the American Arbitration Association (the "AAA") in 
accordance with the terms of this Arbitration Program, the Commercial 
Arbitration Rules of the AAA.  In the event of any inconsistency between this 
Arbitration Program and those rules or statutes, then the terms of this 
Arbitration Program shall control.

   The parties hereto agree to adhere to all warranties and covenants (as
described herein) until such time as the arbitration process has been completed
and the arbitrators have determined each party's post-arbitration obligations
and responsibilities as it relates to such warranties and covenants.  No
provision of, nor the exercise of any rights under, this Arbitration Program
shall limit the right of any Party at any time to seek or use ancillary or
preliminary judicial or non-judicial self help remedies for the purposes of
obtaining, perfecting, preserving, or foreclosing upon any personal property in
which there has been granted a security interest or lien by a Party in the
Documents. In Disputes involving indebtedness or other monetary obligations,
each Party agrees that the other Party may proceed against all liable persons,
jointly and severally against one or more of them, without impairing rights
against other liable persons.  Nor shall a Party be required to join the
principal obligor or any other liable persons (e.g., sureties or guarantors) in
any proceeding against a particular person.  A Party may release or settle with
one or more liable persons as the Party deems fit without releasing or impairing
rights to proceed against any persons not so released.  All statutes of
limitation that would otherwise be applicable shall apply to any arbitration
proceeding.

   The party seeking arbitration shall notify the other Party, in writing, of
that Party's desire to arbitrate a dispute; and each Party shall, within twenty
(20) days from the date such notification is received, select an arbitrator, and
those two arbitrators shall select a third arbitrator within ten (10) days
thereafter.  The issues or claims in dispute shall be committed to writing,
separately stated and numbered, and each party's proposed answers or contentions
shall be signed below the questions. Failure by a party to select an arbitrator
within the prescribed time period shall serve as that Party's acquiescence and
acceptance of the other party's selection of arbitrator. The arbitrators shall
resolve all Disputes in accordance with the applicable substantive law.  Any
Dispute shall be decided by a majority vote of three arbitrators, unless the
claim or amount in controversy does not exceed $100,000.00, in which case a
single arbitrator (who shall have authority to render a maximum award of
$100,000.00, including all damages of any kind, costs and fees) may decide the
Dispute.  The arbitrators may grant any remedy or relief that the arbitrators
deem just and equitable and within the scope of this Arbitration Program.  The
arbitrators may also grant such ancillary relief as is necessary to make
effective the award.  In all arbitration proceedings the arbitrators shall make
specific and written findings of fact and conclusions of law. In all arbitration
proceedings in which the amount in controversy exceeds $100,000.00, in the 
aggregate, the Parties shall have in addition to the statutory right to seek 
vacation or modification of any award pursuant to applicable law, the right to 
seek vacation or modification of any award that is based in whole, or in part, 
on an incorrect or erroneous ruling of law by appeal to an appropriate court 
having jurisdiction; provided, however, that any such application for vacation 
or modification of an award based on an incorrect ruling of law must be filed 
in a court having jurisdiction over the Dispute within 15 days from the date the

                                     24 
<PAGE>

award in rendered.  The arbitrators' findings of fact shall be binding on all 
Parties and shall not be subject to further review except as otherwise 
allowed by applicable law.

    To the maximum extent practicable, an arbitration proceeding hereunder
shall be concluded within 180 days of the filing of the Dispute with AAA. 
Arbitration proceedings hereunder shall be conducted where agreed to in writing
by the Parties or, in the absence of such agreement in Phoeniz, Arizona or the
headquarters of Pentegra if other than Phoeniz, Arizona.  The provisions of this
Arbitration Program shall survive any termination, amendment, or expiration of
the Documents, unless the Parties otherwise expressly agree in writing making
specific reference to this Arbitration Program.  To the extent permitted by
applicable law, the arbitrator shall have the power to award recovery of all
costs and fees (including attorney's fees, administrative fees, and arbitrators'
fees) to the prevailing Party.  This Arbitration Program may be amended,
changed, or modified only by a writing which specifically refers to this
Arbitration Program and which is signed by all the Parties.  If any term,
covenant, condition or provision of the Arbitration Program is found to be
unlawful or invalid or unenforceable, such illegality or invalidity or
unenforceable shall not affect the legality, validity or enforceability of the
remaining parts of this Arbitration Program, and all such remaining parts hereof
shall be valid and enforceable and have full force and effect as if the illegal,
invalid or unenforceable part had not been included.  Each Party agrees to keep
all Disputes and arbitration proceedings strictly confidential, except for
disclosures of information required in the ordinary course of business of the
Parties or by applicable law or regulation.

    14.16   SEVERABILITY.  If any provision of this Agreement shall be found to
be illegal, invalid or unenforceable under present or future laws, such
provision shall be fully severable and this Agreement shall be construed and
enforced as if such provision never comprised a part hereof; and the remaining
provisions hereof shall remain in full force and effect.  In lieu of such
provision, there shall be added automatically as part of this Agreement, a
provision as similar in its terms to such provision as may be possible and be
legal, valid and enforceable.

                                    [End of Page]


                                       25
<PAGE>

   IN WITNESS WHEREOF, the parties have executed this Agreement as of the day
and year first above written.


                                  

                                  --------------------------------------------

                                  By:
                                     -----------------------------------------
                                  Its:
                                      ----------------------------------------



                                  PENTEGRA DENTAL GROUP, INC. 



                                  By:
                                     -----------------------------------------
                                  Its:
                                      ----------------------------------------




                                  --------------------------------------------
                                                              , D.D.S. 
                                  ----------------------------


                                       26
<PAGE>

                                  INDEX TO EXHIBITS


    Exhibit             Description
    -------             -----------

    Annex I        Merger Consideration
    A              Target Companies
    2.1            Corporate Existence; Good Standing; Shareholders/Ownership
    2.3            Permits and Licenses
    2.4            Consents
    2.8            Leases
    2.10           Real and Personal Property; Encumbrances
    2.12           Patents and Trademarks; Names
    2.13           Directors and Officers; Payroll Information; Employment
                    Agreements
    2.15           Contracts (other than Leases and Employment Agreements) 
    2.16           Subsequent Events
    2.19           Debt
    2.20           Insurance Policies
    2.21           Employee Benefit Plans
    2.26           Banking Relations
    2.28           Payors
    4.16           Excluded Assets and Excluded Liabilities; and Assumed 
                    Liabilities
    7.7            Form of Service Agreement
    7.8            Form of Employment Agreement
    9.1(l)         Form of Registration Rights Agreement
    14.2           Addresses for Notice





                                       27
<PAGE>


                                     ANNEX I

                                 MERGER CONSIDERATION


    The aggregate consideration to be received by the Shareholders pursuant to
the Agreement (the "Merger Consideration") is the following: 


    Shares of Pentegra Common Stock equal to $_________ divided by the initial
public offering price of Pentegra Common Stock.

    Cash in the amount of $________________________.

    No fractional shares of Pentegra Common Stock will be issued; rather,
shares of Pentegra Common Stock to be issued to the Shareholders shall be
rounded to the nearest whole share. 

    [Allocation to each Shareholder needed more than one]
                                                 



                                       28

<PAGE>

                                                                   EXHIBIT 2.5



                                EXCHANGE AGREEMENT


    THIS EXCHANGE AGREEMENT ("AGREEMENT"), dated to be effective as of July 31,
1997, is among Pentegra Dental Group, Inc., a Delaware corporation ("Holdings"),
Pentegra Investments, Inc.(f/k/a Pentegra Dental Group, Inc.), a Delaware
corporation, and the persons named on the signature pages hereof under the
caption "Holders".

                               W I T N E S S E T H :

    WHEREAS, Holders hold all of the issued and outstanding shares of common
stock of Pentegra Investments, Inc.("Investments"), par value $.01 per share
("Investments Common Stock"); 

    WHEREAS, Investments was formed for the purpose of negotiating the
acquisition of various dental practices in connection with an initial public
offering of shares of Investments Common Stock ("IPO");

    WHEREAS, the board of directors of Investments and the Holders have
determined that it would be in their mutual best interests to form a holding
company to consummate the practice acquisitions and the IPO in order to
facilitate future acquisitions and divestitures and to provide a cost center for
the Pentegra group's financial, banking and executive and administrative
management functions;

    WHEREAS, to facilitate the formation of a holding company structure,
Investments has caused Holdings to be formed and, solely for the purpose of
organizing Holdings, Holdings has issued to Investments one share of its common
stock, par value $.01 per share ("Holdings Common Stock"); and 

    WHEREAS, it is the intention of the parties that the exchange by the
Holders of the Investments Common Stock for Holdings Common Stock contemplated
by this Agreement be consummated simultaneously with the closing of the practice
acquisitions and the IPO pursuant to an overall plan of exchange that satisfies
the requirements of Section 351 of the Internal Revenue Code of 1986 (the
"Code").

    NOW THEREFORE, in consideration of the premises, and of the agreements,
covenants and conditions hereinafter contained, the parties hereto agree, with
respect to the exchanges provided for herein (the "EXCHANGE"), that at the
Closing (as hereinafter defined) each share of Investments Common Stock issued
and outstanding immediately prior to the Closing will be exchanged for one share
of Holdings Common Stock on the following terms and conditions:

<PAGE>

                                      ARTICLE I

    Subject to the satisfaction of the conditions and obligations of the
parties hereto, the Exchange shall be effective upon consummation of the closing
of the IPO (the "Closing").

                                      ARTICLE II

    At the Closing and simultaneously with the issuance of Holdings Common
Stock in the IPO and the consummation of the practice acquisitions:

         1.   Each share of Investments Common Stock issued and outstanding
              immediately prior to the Closing shall be exchanged for one 
              share of Holdings Common Stock, which shall thereupon be fully
              paid and non-assessable;

         2.   Holdings shall become the owner and holder of each issued and
              outstanding share of Investments common stock so exchanged;

         3.   Each share of Holdings Common Stock owned by Investments prior 
              to the Closing shall be canceled; and

         4.   Immediately after the Closing, the Holders, the public purchasers
              of Holdings Common Stock in the IPO and the persons issued
              Holdings Common Stock pursuant to the practice acquisitions shall
              be the sole shareholders of Holdings and Investments shall be a
              wholly-owned subsidiary of Holdings. 

                                     ARTICLE III

    The consummation of the Exchange is subject to the following conditions
precedent:

         1.   The satisfaction of the respective obligations of the parties 
              hereto in accordance with the terms and conditions herein 
              contained;

         2.   The registration statement filed under the Securities Act of 1933
              covering the Holdings Common Stock to be issued in the IPO shall
              have become effective and approval for listing, upon official
              notice of issuance, by Nasdaq stock market or other nationally
              recognized exchange, of Holdings Common Stock to be issued in the
              IPO shall have been obtained; and

         3.   Any orders, authorizations, approvals or waivers from all 
              applicable regulatory bodies, boards or agencies, if any, which
              are required in connection with the Exchange and related 
              transactions shall have been obtained.

<PAGE>

                                      ARTICLE IV

    Upon written notice from Investments each Holder of an outstanding
certificate or certificates theretofore representing shares of Investments
common stock shall immediately surrender the same to Holdings duly endorsed for
transfer or with stock powers attached in exchange for the issuance by Holdings
of a certificate or certificates in such Holder's name evidencing one share of
Holdings Common Stock for each share of Investments Common Stock held by such
Holder immediately prior to the Closing. Until so surrendered or presented for
transfer, each outstanding certificate which, immediately prior to the Closing,
represented Investments Common Stock shall be deemed and treated for all
corporate purposes to represent the ownership of the same number of shares of
Holdings Common Stock as though such surrender or transfer and exchange had
taken place.  Except as provided herein, no Holder shall sell, assign, transfer,
pledge or encumber any shares of Investments Common Stock presently or hereafter
held by it and, except as otherwise required by law, shall have no right to have
their shares of Investments Common Stock transferred on the stock transfer books
of Investments.  At the Closing, Investments shall surrender for cancellation
the shares of Holdings Common Stock then held by it in exchange for the return
of the consideration paid therefor.

                                      ARTICLE V
                                           
    Each Holder represents and warrants to Holdings, as of the date of this
Agreement and as of the Closing date, that: 

         1.   The Holdings Common Stock to be received by it pursuant to 
              this Agreement is being acquired solely for the Holder's own 
              account and for investment purposes only;

         2.   The Holder has no present plan or intention of distributing, 
              selling or otherwise disposing of the shares of Holdings Common
              Stock to be received by it in the Exchange; and

         3.   The shares of Investments Common Stock to be surrendered in the 
              Exchange are free of any and all transfer restrictions, pledges,
              encumbrances or other conflicting claims of every nature.

                                      ARTICLE V

    This Agreement may be amended, modified or supplemented, or compliance with
any provision or condition hereof may be waived, at any time, only by the mutual
consent of the Holders and Holdings. 

<PAGE>

    This Agreement may be terminated and the Exchange and related transactions
abandoned at any time prior to the Closing if the board of directors of
Investments determines, in its sole discretion, that consummation of the
Exchange would be inadvisable or not in the best interests of Investments or its
subsidiaries.

    The covenants, representations and warranties of Holdings and each Holder
set forth in this Agreement shall survive the Closing of the Exchange
indefinitely.

    This Agreement (i) shall be construed and enforced pursuant to the laws of
the State of Texas, exclusive of any conflicts of law principles thereof that
might refer such construction or enforcement to the laws of another
jurisdiction, and (ii) may be executed in multiple counterparts, each of which
shall constitute one and the same agreement.





<PAGE>

    IN WITNESS WHEREOF, the Holders, Investments and Holdings have caused this
Agreement to be duly executed as of the date first above written.


                                       PENTEGRA INVESTMENTS, INC.


                                       By: /s/ Gary S. Glatter
                                           ---------------------------------
                                       Its: President
                                           ---------------------------------



                                       PENTEGRA DENTAL GROUP, INC. 


                                       By: /s/ Gary S. Glatter
                                           ---------------------------------
                                       Its: President
                                           ---------------------------------

                                       HOLDERS:

/s/ Marie Adamo                        /s/ Victor Burdick
- ----------------------------------     -----------------------------------
    Marie Adamo                            Victor Burdick


Stampeder Services Corp.


By: /s/ Jim Allen                      /s/ J. Michael Casas
- ----------------------------------     -----------------------------------
        Jim Allen                          J. Michael Casas


/s/ Steve Anderson                     /s/ Marvin Cavallino
- ----------------------------------     -----------------------------------
    Steve Anderson                         Marvin Cavallino


Aurous, Ltd.


By: /s/ John Benson                    /s/ William Decker
- ----------------------------------     -----------------------------------
    John Benson                            William Decker
    Director


/s/ Scott Bolding                      /s/ James L. Dunn
- ----------------------------------     -----------------------------------
    Scott Bolding                          James L. Dunn


<PAGE>

/s/ Thomas Mullooly                    /s/ Stephen P. Schmitt
- ----------------------------------     -----------------------------------
    Thomas Mullooly                        Stephen P. Schmitt


                                       Edward Pitts, P/S Plan


/s/ Gary Nagler                        By: /s/ Edward Pitts
- ----------------------------------     -----------------------------------
    Gary Nagler                            Edward Pitts


/s/ Debra Novosad                      /s/ Candy Segall
- ----------------------------------     -----------------------------------
    Debra Novosad                          Candy Segall


/s/ John W. Parsons                    /s/ George M. Siegel
- ----------------------------------     -----------------------------------
    John W. Parsons                        George M. Siegel


/s/ Kelly W. Reed                      /s/ Annie Smith
- ----------------------------------     -----------------------------------
    Kelly W. Reed                          Annie Smith


/s/ Omer K. Reed                       /s/ Ken W. Smith
- ----------------------------------     -----------------------------------
    Omer K. Reed                           Ken W. Smith


/s/ Kim Rozman                         /s/ Stephen Stapleton
- ----------------------------------     -----------------------------------
    Kim Rozman                             Stephen Stapleton


RTT Investments


By: /s/ John Thayer                    /s/ John Thayer
- ----------------------------------     -----------------------------------
    John Thayer                            John Thayer


/s/ Richard Fettig                     /s/ Richard Vento
- ----------------------------------     -----------------------------------
    Richard Fettig                         Richard Vento

<PAGE>

                                       Laguna Enterprises, Ltd.

Dufo, Ltd.


By: /s/ John Benbow                    By: /s/ John Benbow
- ----------------------------------     -----------------------------------
    John Benbow                                John Benbow


Dunn Family Trust


By: /s/ James L. Dunn, Jr.             /s/ Roger Kay
- ----------------------------------     -----------------------------------
    James L. Dunn, Jr.                     Roger Kay
    Trustee


/s/ Allen M. Gelwick                   /s/ George King
- ----------------------------------     -----------------------------------
    Allen M. Gelwick                       George King


/s/ Alan Gerbholz                      /s/ Brian Kniff
- -----------------------------------    -----------------------------------
    Alan Gerbholz                          Brian Kniff


/s/ Gary Glatter                       /s/ James Landers
- ----------------------------------     -----------------------------------
    Gary Glatter                           James Landers


Goldfam, Ltd.                          RBM Trust


By: /s/ Daniel Goldman                 By: /s/ Richard Mains
- ----------------------------------     -----------------------------------
   Daniel Goldman                          Richard Mains


/s/ Mack E. Greder                     /s/ JoAn Majors
- ----------------------------------     -----------------------------------
    Mack E. Greder                         JoAn Majors


/s/ Bruce Kanehl                       /s/ James Medlock
- ----------------------------------     -----------------------------------
    Bruce Kanehl                           James Medlock

<PAGE>

/s/ Sam H. Carr
- ----------------------------------     
    Sam H. Carr


/s/ Daniel A. Bock
- ----------------------------------
    Daniel A. Bock


MANHATTAN GROUP FUNDING


By: /s/ Ronald I. Heller
- ----------------------------------     
    Ronald I. Heller
    Partner


By: /s/ David S. Nagelberg
- ----------------------------------     
    David S. Nagelberg
    Partner

<PAGE>



                             ASSET CONTRIBUTION AGREEMENT

                                     BY AND AMONG


                            PENTEGRA DENTAL GROUP, INC.,

                                   PENTEGRA, LTD.,

                                NAPILI, INTERNATIONAL

                                         and

                                OMER K. REED, D.D.S.


<PAGE>

                                TABLE OF CONTENTS

                                                                      PAGE
                                                                      ----
Section 1.    TERMS OF THE CONTRIBUTION
    1.2       CONTRIBUTION OF ASSETS. . . . . . . . . . . . . . . . .   1
    1.3       EXCLUDED ASSETS . . . . . . . . . . . . . . . . . . . .   1
    1.4       PURCHASE PRICE; ASSUMPTION OF LIABILITIES . . . . . . .   2
    1.5       SUBSEQUENT ACTIONS. . . . . . . . . . . . . . . . . . .   2

Section 2.    REPRESENTATIONS AND WARRANTIES OF CONTRIBUTORS AND
               SHAREHOLDER.
    2.1       CORPORATE EXISTENCE; GOOD STANDING. . . . . . . . . . .   2
    2.2       POWER AND AUTHORITY FOR TRANSACTIONS. . . . . . . . . .   3
    2.3       PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS . . .   3
    2.4       CONSENTS. . . . . . . . . . . . . . . . . . . . . . . .   3
    2.5       DISTRIBUTIONS AND REPURCHASES . . . . . . . . . . . . .   3
    2.6       CORPORATE RECORDS . . . . . . . . . . . . . . . . . . .   3
    2.7       CONTRIBUTORS' FINANCIAL INFORMATION . . . . . . . . . .   3
    2.8       LEASES. . . . . . . . . . . . . . . . . . . . . . . . .   4
    2.9       CONDITION OF ASSETS . . . . . . . . . . . . . . . . . .   4
    2.10      TITLE TO AND ENCUMBRANCES ON PROPERTY . . . . . . . . .   4
    2.11      INVENTORIES . . . . . . . . . . . . . . . . . . . . . .   4
    2.12      INTELLECTUAL PROPERTY RIGHTS; NAMES . . . . . . . . . .   4
    2.13      DIRECTORS AND OFFICERS; PAYROLL INFORMATION; EMPLOYEES.   4
    2.14      LEGAL PROCEEDINGS . . . . . . . . . . . . . . . . . . .   4
    2.15      CONTRACTS . . . . . . . . . . . . . . . . . . . . . . .   5
    2.16      SUBSEQUENT EVENTS . . . . . . . . . . . . . . . . . . .   5
    2.17      TAXES . . . . . . . . . . . . . . . . . . . . . . . . .   6
    2.18      COMMISSIONS AND FEES. . . . . . . . . . . . . . . . . .   7
    2.19      LIABILITIES; DEBT . . . . . . . . . . . . . . . . . . .   7
    2.20      INSURANCE POLICIES. . . . . . . . . . . . . . . . . . .   7
    2.21      EMPLOYEE BENEFIT PLANS. . . . . . . . . . . . . . . . .   7
    2.22      ADVERSE AGREEMENTS. . . . . . . . . . . . . . . . . . .   8
    2.23      COMPLIANCE WITH LAWS IN GENERAL . . . . . . . . . . . .   8
    2.24      [intentionally deleted] . . . . . . . . . . . . . . . .   8
    2.25      NO UNTRUE REPRESENTATIONS . . . . . . . . . . . . . . .   8
    2.26      BANKING RELATIONS . . . . . . . . . . . . . . . . . . .   8
    2.27      [INTENTIONALLY DELETED] . . . . . . . . . . . . . . . .   8
    2.28      [INTENTIONALLY DELETED] . . . . . . . . . . . . . . . .   8

Section 3.    REPRESENTATIONS AND WARRANTIES OF PENTEGRA
    3.1       CORPORATE EXISTENCE: GOOD STANDING. . . . . . . . . . .   8
    3.2       POWER AND AUTHORITY; CONSENTS . . . . . . . . . . . . .   8
    3.3       PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS . . .   9
    3.4       LEGAL PROCEEDINGS . . . . . . . . . . . . . . . . . . .   9
    3.5       TAXES . . . . . . . . . . . . . . . . . . . . . . . . .   9
    3.6       COMMISSIONS AND FEES. . . . . . . . . . . . . . . . . .   9
    3.7       CAPITAL STOCK . . . . . . . . . . . . . . . . . . . . .   9
    3.8       NO UNTRUE REPRESENTATIONS . . . . . . . . . . . . . . .   9

Section 4.    COVENANTS OF CONTRIBUTORS AND SHAREHOLDER.
    4.1       CONSUMMATION OF AGREEMENT; EXHIBITS . . . . . . . . . .   9

                                     -i-
<PAGE>

    4.2       BUSINESS OPERATIONS; CHANGE OF NAME . . . . . . . . . .  10
    4.3       ACCESS AND NOTICE . . . . . . . . . . . . . . . . . . .  10
    4.4       APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS . .  10
    4.5       ACQUISITION PROPOSALS . . . . . . . . . . . . . . . . .  10
    4.6       FUNDING OF ACCRUED EMPLOYEE BENEFITS. . . . . . . . . .  10
    4.7       EMPLOYEE MATTERS. . . . . . . . . . . . . . . . . . . .  10
    4.8       DISTRIBUTIONS AND REPURCHASES . . . . . . . . . . . . .  11
    4.9       REQUIREMENTS TO EFFECT ACQUISITION. . . . . . . . . . .  11
    4.10      ACCOUNTING AND TAX MATTERS. . . . . . . . . . . . . . .  11
    4.11      WAIVER OF BULK TRANSFER COMPLIANCE. . . . . . . . . . .  11
    4.12      [INTENTIONALLY DELETED] . . . . . . . . . . . . . . . .  11
    4.13      HIRING OF EMPLOYEES . . . . . . . . . . . . . . . . . .  11

Section 5.    COVENANTS OF PENTEGRA
    5.1       CONSUMMATION OF AGREEMENT; EXHIBITS . . . . . . . . . .  11
    5.2       APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS . .  11

Section 6.    COVENANTS OF PENTEGRA AND CONTRIBUTORS AND SHAREHOLDER
    6.1       FILINGS; OTHER ACTIONS. . . . . . . . . . . . . . . . .  11

Section 7.    PENTEGRA CONDITIONS PRECEDENT
    7.1       REPRESENTATIONS AND WARRANTIES. . . . . . . . . . . . .  12
    7.2       COVENANTS AND CONDITIONS. . . . . . . . . . . . . . . .  12
    7.3       PROCEEDINGS . . . . . . . . . . . . . . . . . . . . . .  12
    7.4       NO MATERIAL ADVERSE CHANGE. . . . . . . . . . . . . . .  12
    7.5       DUE DILIGENCE REVIEW. . . . . . . . . . . . . . . . . .  12
    7.6       APPROVAL BY THE BOARD OF DIRECTORS. . . . . . . . . . .  12
    7.7       CONSENTS AND APPROVALS. . . . . . . . . . . . . . . . .  12
    7.8       CLOSING DELIVERIES. . . . . . . . . . . . . . . . . . .  12
    7.9       DEBT AND RECEIVABLES. . . . . . . . . . . . . . . . . .  12
    7.10      NO CHANGE IN WORKING CAPITAL. . . . . . . . . . . . . .  13

Section 8.    CONTRIBUTORS'S AND SHAREHOLDER' CONDITIONS PRECEDENT
    8.1       REPRESENTATIONS AND WARRANTIES. . . . . . . . . . . . .  13
    8.2       COVENANTS AND CONDITIONS. . . . . . . . . . . . . . . .  13
    8.3       PROCEEDINGS . . . . . . . . . . . . . . . . . . . . . .  13
    8.4       CLOSING DELIVERIES. . . . . . . . . . . . . . . . . . .  13
    8.5       SECURITIES APPROVAL . . . . . . . . . . . . . . . . . .  13

Section 9.    CLOSING DELIVERIES
    9.1       DELIVERIES OF CONTRIBUTORS AND SHAREHOLDER. . . . . . .  13
    9.2       DELIVERIES OF PENTEGRA. . . . . . . . . . . . . . . . .  14

Section 10.   NATURE AND SURVIVAL OF REPRESENTATIONS AND WARRANTIES;
              INDEMNIFICATION
    10.1      NATURE AND SURVIVAL . . . . . . . . . . . . . . . . . .  15
    10.2      INDEMNIFICATION BY PENTEGRA . . . . . . . . . . . . . .  15
    10.3      INDEMNIFICATION BY CONTRIBUTORS AND SHAREHOLDER . . . .  16
    10.4      INDEMNIFICATION PROCEDURE . . . . . . . . . . . . . . .  17
    10.5      RIGHT OF SETOFF . . . . . . . . . . . . . . . . . . . .  17

Section 11.   TERMINATION

Section 12.   TRANSFER REPRESENTATIONS

                                     -ii-
<PAGE>

    12.1      TRANSFER RESTRICTIONS . . . . . . . . . . . . . . . . .  18
    12.2      INVESTMENTS; COMPLIANCE WITH LAW. . . . . . . . . . . .  18
    12.3      ECONOMIC RISK; SOPHISTICATION . . . . . . . . . . . . .  18

Section 13.   NONDISCLOSURE OF CONFIDENTIAL INFORMATION

Section 14.   NONCOMPETITION
    14.1      PROHIBITED ACTIVITIES . . . . . . . . . . . . . . . . .  19
    14.2      REASONABLE RESTRAINT. . . . . . . . . . . . . . . . . .  19
    14.3      SEVERABILITY; REFORMATION . . . . . . . . . . . . . . .  19
    14.4      TERM. . . . . . . . . . . . . . . . . . . . . . . . . .  19

Section 15.   MISCELLANEOUS
    15.1      TAX COVENANT. . . . . . . . . . . . . . . . . . . . . .  20
    15.2      NOTICES . . . . . . . . . . . . . . . . . . . . . . . .  20
    15.3      FURTHER ASSURANCES. . . . . . . . . . . . . . . . . . .  20
    15.4      EACH PARTY TO BEAR COSTS. . . . . . . . . . . . . . . .  20
    15.5      PUBLIC DISCLOSURES. . . . . . . . . . . . . . . . . . .  20
    15.6      GOVERNING LAW . . . . . . . . . . . . . . . . . . . . .  21
    15.7      CAPTIONS. . . . . . . . . . . . . . . . . . . . . . . .  21
    15.8      INTEGRATION OF EXHIBITS . . . . . . . . . . . . . . . .  21
    15.9      ENTIRE AGREEMENT/AMENDMENT. . . . . . . . . . . . . . .  21
    15.10     COUNTERPARTS. . . . . . . . . . . . . . . . . . . . . .  21
    15.11     BINDING EFFECT/ASSIGNMENT . . . . . . . . . . . . . . .  21
    15.12     COSTS OF ENFORCEMENT. . . . . . . . . . . . . . . . . .  21
    15.13     PRORATIONS. . . . . . . . . . . . . . . . . . . . . . .  21
    15.14     AMENDMENTS; WAIVERS . . . . . . . . . . . . . . . . . .  22
    15.15     ARBITRATION . . . . . . . . . . . . . . . . . . . . . .  22
    15.16     SEVERABILITY. . . . . . . . . . . . . . . . . . . . . .  23

                                     -iii-

<PAGE>

                         ASSET CONTRIBUTION AGREEMENT

     This ASSET CONTRIBUTION AGREEMENT (this "Agreement"), made and executed as
of  August 20, 1997, is by and among PENTEGRA  DENTAL GROUP, INC., a Delaware
corporation ("Pentegra"), PENTEGRA, LTD., an Arizona corporation and NAPILI,
INTERNATIONAL, an Arizona corporation (collectively, "Contributors"), and the
shareholders of Contributors set forth on the signature page hereof (referred to
herein as "Shareholder" or "Shareholder").

                                 WITNESSETH:

     WHEREAS, Contributors conduct a consulting and training business
("Business") and Pentegra is engaged in the business of  managing certain
non-dentistry aspects of dental practices;

     WHEREAS, Contributors desire to contribute to Pentegra, and Pentegra
desires to receive from Contributors, certain assets of Contributors;

     WHEREAS, Pentegra or its affiliated designee has entered into or intends to
enter into Agreements and Plans of Reorganization, Asset Contribution Agreements
and other acquisition agreements (collectively, the "Other Agreements") with
such persons or entities or the stockholders of such entities listed on EXHIBIT
A (together with Contributors, the "Target Companies");

     WHEREAS, it is intended for Federal income tax purposes that the transfers
contemplated by this Agreement, the Other Agreements and Pentegra's initial
public offering ("Initial Public Offering") of shares of its common stock, par
value $.01 per share ("Pentegra Common Stock") shall qualify as an exchange
within the meaning of Section 351 of the Internal Revenue Code of 1986, as
amended ("IRC" or "Code");

     WHEREAS, the consummation of the transfers to Pentegra pursuant to this
Agreement is intended to occur in connection with, and is conditioned upon, the
simultaneous consummation of the transfers contemplated by the Other Agreements
and the Initial Public Offering.
 .
     NOW THEREFORE, in consideration of the mutual promises and covenants
hereinafter set forth, and for other good and valuable consideration, the
sufficiency of which are hereby acknowledged, the parties agree as follows:

SECTION 1.  TERMS OF THE CONTRIBUTION.

     1.1  THE CLOSING.  The closing of the transactions contemplated hereby
shall take place at 10:00 am local time, at the offices of Jackson Walker
L.L.P., on the day on which the Initial Public Offering of Pentegra Common Stock
is consummated.  The date on which the Closing occurs is hereinafter referred to
as the "Closing Date".

     1.2  CONTRIBUTION OF ASSETS.  Subject to and upon the terms and conditions
contained herein, on the Closing Date, Contributors shall convey, transfer,
deliver and assign to Pentegra or any affiliate of Pentegra designated by
Pentegra all of Contributors' right, title and interest in and to those certain
assets described on EXHIBIT 1.1 attached hereto (individually, "Asset", and
collectively "Assets"), free and clear of all obligations, security interests,
claims, liens and encumbrances, except as specifically assumed, or taken subject
to, by Pentegra pursuant to SECTION 1.3(b) hereof.

                                     1
<PAGE>

     1.3  EXCLUDED ASSETS.  There shall be excluded from the Assets to be
transferred and contributed hereunder, and Contributors shall retain all of
their right, title and interest in and to, the assets not specifically
transferred hereunder, including without limitation, the assets described on
EXHIBIT 1.2 (the "Excluded Assets").

     1.4  PURCHASE PRICE; ASSUMPTION OF LIABILITIES.  As consideration for the
Assets and the representations, warranties and agreements of Contributors
contained herein, Pentegra shall, on the Closing Date:

          (a)  Cause to be transferred to Contributors the consideration
specified in ANNEX I attached hereto (the "Acquisition Consideration"); and.

          (b)  Except as otherwise provided herein, assume and perform or
discharge on or after the Closing Date, the contracts, leases, obligations,
commitments, liabilities and indebtedness of Contributors listed on EXHIBIT
1.3(b) attached hereto to the extent that such obligations, commitments,
liabilities and indebtedness  are current and not otherwise in default. (the
"Assumed Liabilities").  Notwithstanding any contrary provision contained
herein, Pentegra shall not be deemed to have assumed, nor shall Pentegra assume:
(i) any liability, commitment or obligation or trade payable or indebtedness not
specifically disclosed on EXHIBIT 1.3(b), (ii) any liability set forth on
EXHIBIT 1.3(b) which may be incurred by reason of any breach of or default under
such contracts, leases, commitments or obligations which occurred on or before
the Closing Date; (iii) any liability for any employee benefits payable to
employees of Contributors, including, but not limited to, liabilities arising
under any Contributor Plan (as defined in SECTION 2.21 hereof); (iv) any
liability based upon or arising out of a violation of any antitrust or similar
restraint-of-trade laws by Shareholder or Contributors, including, without
limiting the generality of the foregoing, any such antitrust liability which may
arise in connection with agreements, contracts, commitments or orders for the
sale of goods or provision of services by Contributors reflected on the books of
Contributors at or prior to the Closing Date; (v) any liability based upon or
arising out of any tortious or wrongful actions of Contributors, any employee or
independent contractor of Contributors or Shareholder, (vi) any liability for
the payment of any taxes of Contributors or Shareholder, including without
limitation, sales, use and other transfer taxes and income taxes arising from or
by reason of the transactions contemplated by this Agreement; (vii) any
indebtedness secured by deeds of trust or mortgages on real property; nor (viii)
any liability incurred or to be incurred pursuant to any malpractice or other
suits or actions pending against Contributors or Shareholder.

     1.5  SUBSEQUENT ACTIONS. If, at any time after the Closing Date, Pentegra
shall consider or be advised that any deeds, bills of sale, assignments,
assurances or any other actions or things are necessary or desirable to vest,
perfect or confirm of record or otherwise in Pentegra its right, title or
interest in, to or under any of the Assets or otherwise to carry out this
Agreement, in return for the consideration set forth in this Agreement,
Contributors and Shareholder shall execute and deliver all such deeds, bills of
sale, assignments and assurances and take and do all such other actions and
things as may be necessary or desirable to vest, perfect or confirm any and all
right, title and interest in, to and under the Assets in Pentegra or otherwise
to carry out this Agreement.

SECTION 2.  REPRESENTATIONS AND WARRANTIES OF CONTRIBUTORS AND SHAREHOLDER.

     Contributors and Shareholder, jointly and severally, hereby represent and
warrant to Pentegra as follows:

     2.1  CORPORATE EXISTENCE; GOOD STANDING.  Contributors are each a
corporation duly organized, validly existing and in good standing under the laws
of the State of Arizona.  Contributors have all necessary corporate powers to
own all of its assets and to carry on its business as such business is now being
conducted.  Contributors do not own stock in or control, directly or indirectly,
any other corporation, association or business organization, nor are
Contributors a party to any joint venture or partnership.  The Shareholder is
the sole shareholder of each Contributor and own all outstanding shares of
capital stock free of all security interests, claims, encumbrances and liens.
Each share of each Contributor's common stock has been legally and validly
issued and fully paid and nonassessable.  No shares of capital stock of either
Contributor are owned by either Contributor in treasury. There are no
outstanding (a) bonds, debentures, notes or other obligations the holders of
which have the right to vote with the stockholders of Contributors on any
matter, (b) securities of Contributors convertible into equity interests in
Contributors, or (c) commitments, options, rights or warrants to issue any such
equity interests in Contributors, to issue securities of Contributors

                                     2
<PAGE>

convertible into such equity interests, or to redeem any securities of
Contributors.  No shares of capital stock of Contributors have been issued or
disposed of in violation of the preemptive rights, rights of first refusal or
similar rights of any of Contributors' stockholders.  Contributors are not
required to qualify to do business as a foreign corporation in any other state
or jurisdiction by reason of its business, properties or activities in or
relating to such other state or jurisdiction.  Contributors do not have any
assets, employees or offices in any state other than the state set forth in the
first sentence of this SECTION 2.1.

     2.2  POWER AND AUTHORITY FOR TRANSACTIONS.  Contributors have the corporate
power to execute, deliver and perform this Agreement and all agreements and
other documents executed and delivered by them pursuant to this Agreement or to
be executed and delivered on the Closing Date, and has taken all action required
by law, their Articles or Certificate of Incorporation, their Bylaws or
otherwise, to authorize the execution, delivery and performance of this
Agreement and such related documents.  Shareholder has the legal capacity to
enter into and perform this Agreement and the other agreements to be executed
and delivered in connection herewith.  Contributors have obtained the approval
of their stockholders necessary to the consummation of the transactions
contemplated herein.  This Agreement and all agreements and documents executed
and delivered in connection herewith have been, or will be as of the Closing
Date, duly executed and delivered by Contributors and Shareholder, as
appropriate, and constitute or will constitute the legal, valid and binding
obligations of Contributors and Shareholder, enforceable against Contributors
and Shareholder in accordance with their respective terms, except as may be
limited by applicable bankruptcy, insolvency or similar laws affecting
creditors' rights generally or the availability of equitable remedies.  The
execution and delivery of this Agreement, and the agreements executed and
delivered pursuant to this Agreement or to be executed and delivered on the
Closing Date, do not, and, subject to the receipt of consents described on
EXHIBIT 2.4, the consummation of the actions contemplated hereby will not,
violate any provision of the Articles or Certificate of Incorporation or Bylaws
of Contributors or any provisions of, or result in the acceleration of, any
obligation under any mortgage, lien, lease, agreement, rent, instrument, order,
arbitration award, judgment or decree to which Contributors or Shareholder is a
party or by which Contributors or Shareholder is bound, or violate any material
restrictions of any kind to which Contributors is subject, or result in any lien
or encumbrance on any of Contributors' assets or the Assets.

     2.3  PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS.  All building or
other permits, certificates of occupancy, concessions, grants, franchises,
licenses, certificates of need and other governmental authorizations and
approvals required for the conduct of the Business or the use of the Assets, or
waivers thereof, have been duly obtained and are in full force and effect and
are described on EXHIBIT 2.3.  There are no proceedings pending or, to the
knowledge of Contributors and Shareholder, threatened, which may result in the
revocation, cancellation or suspension, or any adverse modification, of any such
licenses or permits.

     2.4  CONSENTS.  Except as set forth on EXHIBIT 2.4, no consent,
authorization, permit, license or filing with any governmental authority, any
lender, lessor, any manufacturer or supplier or any other person or entity is
required to authorize, or is required in connection with, the execution,
delivery and performance of this Agreement and the agreements and documents
contemplated hereby on the part of Contributors or Shareholder.

     2.5  DISTRIBUTIONS AND REPURCHASES.  No distribution, payment or dividend
of any kind has been declared or paid by Contributors on any of their capital
stock since the Balance Sheet Date.  No repurchase of any of Contributors'
capital stock has been approved, effected or is pending, or is contemplated by
Contributors.

     2.6  CORPORATE RECORDS.  True and correct copies of the Articles or
Certificate of Incorporation, Bylaws and minutes of Contributors and all
amendments thereto have been delivered to Pentegra.  The minute books of
Contributors contain accurate minutes of all meetings of and consents to actions
taken without meetings of the Board of Directors and stockholders of
Contributors since their formation.  The books of account of Contributors have
been kept accurately in the ordinary course of business and the revenues,
expenses, assets and liabilities of Contributors have been properly recorded in
such books.

     2.7  CONTRIBUTORS' FINANCIAL INFORMATION.  Contributors have heretofore
furnished Pentegra with copies of its unaudited balance sheet and related
unaudited statements of income, retained earnings and cash flows for its prior
two full fiscal years, as well as copies of its unaudited balance sheet as of
December 31, 1996 and June 30, 1997 (collectively, the "Balance Sheet" and the
latest date thereof shall be referred to as the "Balance Sheet Date") and any

                                     3
<PAGE>

related unaudited statements of income, retained earnings, schedule of accounts
receivable, accounts payable and accrued liabilities, and cash flows for the
twelve months then ended (collectively, with the related notes thereto, the
"Financial Statements").  The Financial Statements fairly present the financial
condition and results of operations of Contributors as of the dates and for the
periods indicated and reflect all fixed and contingent liabilities of
Contributors.

     2.8  LEASES.  EXHIBIT 2.8 attached hereto sets forth a list of all leases
pursuant to which Contributors or Shareholder leases, as lessor or lessee, real
or personal property used in operating the Business, related to the Assets or
otherwise.  All such leases listed on EXHIBIT 2.8 are valid and enforceable in
accordance with their respective terms, and there is not under any such lease
any existing default by Contributors, as lessor or lessee, or any condition or
event of which Shareholder or Contributors has knowledge which with notice or
lapse of time, or both, would constitute a default, in respect of which
Contributors or Shareholder have not taken adequate steps to cure such default
or to prevent a default from occurring.

     2.9  CONDITION OF ASSETS.  All of the Assets are in good condition and
repair subject to normal wear and tear and conform with all applicable
ordinances, regulations and other laws, and Contributors and Shareholder have no
knowledge of any latent defects therein.

     2.10 TITLE TO AND ENCUMBRANCES ON PROPERTY.  Contributors have good, valid
and marketable title to all of the Assets, free and clear of any liens, claims,
charges, exceptions or encumbrances, except for those, if any, which are set
forth in EXHIBIT 2.10 attached hereto.  Contributors shall cause all
encumbrances set forth on EXHIBIT 2.10 (other than those encumbrances indicated
on EXHIBIT 1.3(b)) to be released or terminated prior to the Closing Date and
evidence of such releases of liens and claims shall be provided to Pentegra on
the Closing Date and the Assets shall not be used to satisfy such liens, claims
or encumbrances.

     2.11 INVENTORIES.  All of the Assets constituting inventory are owned or
used by Contributors, are in good, current, standard and merchantable condition
and are not obsolete or defective.

     2.12 INTELLECTUAL PROPERTY RIGHTS; NAMES.  Except as set forth on EXHIBIT
2.12, Contributors have no right, title or interest in or to patents, patent
rights, corporate names, assumed names, manufacturing processes, trade names,
trademarks, service marks, inventions, specialized treatment protocols,
copyrights, formulas and trade secrets or similar items.  Set forth in EXHIBIT
2.12 is a listing of all names of all predecessor companies of Contributors,
including the names of any entities from whom Contributors previously acquired
significant assets.  Except for off-the-shelf software licenses and except as
set forth on EXHIBIT 2.12, Contributors are not a licensee in respect of any
patents, trademarks, service marks, trade names, copyrights or applications
therefor, or manufacturing processes, formulas or trade secrets or similar items
and no such licenses are necessary for the conduct of the Business or the use of
the Assets.  No claim is pending or has been made to the effect that the Assets
or the present or past operations of Contributors in connection with the Assets
or Business infringe upon or conflict with the asserted rights of others to any
patents, patent rights, manufacturing processes, trade names, trademarks,
service marks, inventions, licenses, specialized treatment protocols,
copyrights, formulas, know-how and trade secrets.  Contributors have the sole
and exclusive right to use all Assets constituting proprietary rights without
infringing or violating the rights of any third parties and no consents of any
third parties are required for the use thereof by Pentegra.

     2.13 DIRECTORS AND OFFICERS; PAYROLL INFORMATION; EMPLOYEES.  Set forth on
EXHIBIT 2.13 attached hereto is a true and complete list, as of the date of this
Agreement of: (a) the name of each director and officer of Contributors and the
offices held by each, (b) the most recent payroll report of Contributors,
showing all current employees of Contributors and their current levels of
compensation, (c) promised increases in compensation of employees of
Contributors that have not yet been effected, (d) oral or written employment
agreements, consulting agreements or independent contractor agreements (and all
amendments thereto) to which Contributors is a party, copies of which have been
delivered to Pentegra, and (e) all employee manuals, materials, policies,
procedures and work-related rules, copies of which have been delivered to
Pentegra.  Contributors are in compliance with all applicable laws, rules,
regulations and ordinances respecting employment and employment practices.
Contributors have not engaged in any unfair labor practice.  There are no unfair
labor practices charges or complaints pending or threatened against
Contributors, and Contributors has never been a party to any agreement with any
union, labor organization or collective bargaining unit.
                                     4
<PAGE>

     2.14 LEGAL PROCEEDINGS.  Neither Shareholder, Contributors nor the Business
nor any of the Assets is subject to any pending, nor does Contributors or
Shareholder have knowledge of any threatened, litigation, governmental
investigation, condemnation or other proceeding against or relating to or
affecting Contributors, Shareholder, the Business, the Assets or the
transactions contemplated by this Agreement, and, to the knowledge of
Contributors and Shareholder, no basis for any such action exists, nor is there
any legal impediment of which Contributors or Shareholder has knowledge to the
continued operation of its business or the use of the Assets in the ordinary
course, subject to consents set forth on EXHIBIT 2.4.

     2.15 CONTRACTS.  Contributors have delivered to Pentegra true copies of all
written, and disclosed to Pentegra all oral, outstanding contracts, obligations
and commitments of Contributors ("Contracts"), entered into in connection with
and related to the Assets or the Business, all of which are listed or
incorporated by reference on EXHIBIT 2.8 (in the case of leases), EXHIBIT 2.13
(in the case of employment agreements) and EXHIBIT 2.15 (in the case of
Contracts other than leases) attached hereto.  Except as otherwise indicated on
such Exhibits, all of such Contracts are valid, binding and enforceable in
accordance with their terms and are in full force and effect, and no defenses,
offsets or counterclaims have been asserted or may be made by any party thereto.
Except as indicated on such Exhibits, there is not under any such Contract any
existing default by Contributors or Shareholder, or any condition or event of
which Contributors or Shareholder has knowledge which with notice or lapse of
time, or both, would constitute a default.  Contributors and Shareholder have
no knowledge of any default by any other party to such Contracts.  Contributors
and Shareholder have not received notice of the intention of any party to any
Contract to cancel or terminate any Contract and have no reason to believe that
any amendment or change to any Contract is contemplated by any party thereto.
Other than those contracts, obligations and commitments listed on EXHIBIT 2.8,
EXHIBIT 2.13 and EXHIBIT 2.15, Contributors are not a party to any material
written or oral agreement contract, lease or arrangement, including without
limitation, any:

          (a)  Contract related to the Assets other than this Agreement;

          (b)  Employment, consulting or compensation agreement or arrangement;

          (c)  Labor or collective bargaining agreement;

          (d)  Lease agreement with respect to any property, whether as lessor
or lessee;

          (e)  Deed, bill of sale or other document evidencing an interest in or
agreement to purchase or sell real or personal property;

          (f)  Contract for the purchase of materials, supplies or equipment (i)
which is in excess of the requirements of the Business now booked or for normal
operating inventories, or (ii) which is not terminable upon notice of thirty
(30) days or less;

          (g)  Agreement for the purchase from a supplier of all or
substantially all of the requirements of the Business of a particular product or
service;

          (h)  Loan agreement or other contract for money borrowed or lent or to
be borrowed or lent to another;

          (i)  Contracts containing non-competition covenants;

          (j)  Financial or similar contracts or agreements with patients of the
Contributors or Shareholder, oral or written, that provide for prepayments or
deferred installment payments; or

          (k)  Other contracts or agreements that involve either an unperformed
commitment in excess of $1,000 or that terminate or can only be terminated by
Contributors on more than 30 days after the date hereof.

                                     5

<PAGE>

     2.16 SUBSEQUENT EVENTS.  Other than as set forth on EXHIBIT 2.16, 
Contributors have not, since the Balance Sheet Date:

          (a)  Incurred any material obligation or liability (absolute, 
accrued, contingent or otherwise) or entered into any contract, lease, 
license or commitment, except in connection with the performance of this 
Agreement;  

          (b)  Discharged or satisfied any material lien or encumbrance, or 
paid or satisfied any material obligation or liability (absolute, accrued, 
contingent or otherwise) other than (i) liabilities shown or reflected on the 
Balance Sheet, (ii) liabilities incurred since the Balance Sheet Date in the 
ordinary course of business;

          (c)  Formed or acquired or disposed of any interest in any 
corporation, partnership, joint venture or other entity;

          (d)  Made any payments to or loaned any money to any person or 
entity other than in the ordinary course of business;

          (e)  Lost or terminated any employee, patient, customer or supplier 
that has or may have, individually or in the aggregate, a material adverse 
effect on the Business; 

          (f)  Increased or established any reserve for taxes or any other 
liability on its books or otherwise provided therefor, except as may have 
been required due to income or operations of Contributors since the Balance 
Sheet Date;

          (g)  Mortgaged, pledged or subjected to any lien, charge or other 
encumbrance any of the Assets, tangible or intangible;

          (h)  Sold or contracted to sell or transferred or contracted to 
transfer any of the Assets or any other assets used in the conduct of the 
Business, canceled any debts or claims or waived any rights, except in the 
ordinary course of business;

          (i)  Except in the ordinary course or business consistent with past 
practices, granted any increase in the rates of pay of employees, consultants 
or agents, or by means of any bonus or pension plan, contract or other 
commitment, increased the compensation of any officer, employee, consultant 
or agent;

          (j)  Authorized or incurred any capital expenditures in excess of 
Five Thousand and No/100 Dollars ($5,000.00);

          (k)  Except for this Agreement and any other agreement executed and 
delivered pursuant to this Agreement, entered into any material transaction 
other than in the ordinary course of business or permitted hereunder; 

          (l)  Redeemed, purchased, sold or issued any stock, bonds or other 
securities;

          (m)  Experienced damage, destruction or loss (whether or not 
covered by insurance) materially and adversely affecting any of its 
properties, assets or business or the Business or the Assets, or experienced 
any other material adverse change in its financial condition, assets, 
prospects, liabilities or business;

          (n)  Declared or paid a distribution, payment or dividend of any 
kind on the capital stock of Contributors; 

          (o)  Repurchased, approved any repurchase or agreed to repurchase 
any of Contributors's capital stock; or 

          (p)  Suffered any material adverse change in the Business or to the 
Assets. 

                                       6
<PAGE>

     2.17 TAXES.  (a)  Contributors have filed all tax returns (including 
tax reports and other statements) required to have been filed by it, and has 
paid all taxes (including any interest, penalty or additions thereto) 
required to have been paid by it.  All such tax returns are complete and 
accurate in all respects and properly reflect the relevant taxes for the 
periods covered thereby.  Contributors has not received any notice that any 
tax deficiency or delinquency has been or may be asserted against 
Contributors.  There are no audits relating to taxes of Contributors pending 
or in process or, to the knowledge of Contributors, threatened.  Contributors 
is not currently the beneficiary of any waiver of any statute of limitations 
in respect of taxes nor of any extension of time within which to file any tax 
return or to pay any tax assessment or deficiency.  There are no liens or 
encumbrances relating to taxes on or threatened against any of the assets of 
Contributors.  Contributors have withheld and paid all taxes required by law 
to have been withheld and paid by it.  Neither Contributors nor any 
predecessor of Contributors is or has been a party to any tax allocation or 
sharing agreement or a member of an affiliated group of corporations filing a 
consolidated Federal income tax return.  Contributors have delivered to 
Pentegra correct and complete copies of Contributors's three most recently 
filed annual state, local and Federal income tax returns, together with all 
examination reports and statements of deficiencies assessed against or agreed 
to by Contributors during the three calendar year period preceding the date 
of this Agreement.  Contributors have neither made any payments, is obligated 
to make any payments, or is a party to any agreement that under any 
circumstance could obligate it to make any payments that will not be 
deductible under Code section 280G.

     (b) Contributors do not intend to dispose of any of the shares of 
Pentegra Common Stock to be received hereunder and is not a party to any 
plan, arrangement or agreement for the disposition of such shares.  
Contributors and Shareholder have no knowledge, after due inquiry, of any 
such intent, plan, arrangement or agreement by Shareholder.  Nothing 
contained herein shall prohibit Contributors from selling such shares of 
Pentegra Common Stock after the designated holding period and in accordance 
with SECTION 12.1 hereof.

     2.18 COMMISSIONS AND FEES.  There are no claims for brokerage 
commissions or finder's or similar fees in connection with the transactions 
contemplated by this Agreement which may be now or hereafter asserted against 
Pentegra, Contributors or Contributors's Shareholder resulting from any 
action taken by Contributors or Shareholder or their respective agents or 
employees, or any of them.

     2.19 LIABILITIES; DEBT.  Except to the extent reflected or reserved 
against on the Balance Sheet, Contributors did not have, as of the Balance 
Sheet Date, and has not incurred since that date and will not have incurred 
as of the Closing Date, any liabilities or obligations of any nature, whether 
accrued, absolute, contingent or otherwise, and whether due or to become due, 
other than those incurred in the ordinary course of business or as set forth 
on EXHIBIT 2.16.  Contributors and Shareholder do not know, or have 
reasonable grounds to know, of any basis for the assertion against 
Contributors or Shareholder as of the Balance Sheet Date, of any claim or 
liability of any nature in any amount not fully reflected or reserved against 
on the Balance Sheet, or of any claim or liability of any nature arising 
since that date other than those incurred in the ordinary course of business 
or contemplated by this Agreement.  All indebtedness of Contributors 
(including without limitation, indebtedness for borrowed money, guaranties 
and capital lease obligations) is described on EXHIBIT 2.19 attached hereto.

     2.20 INSURANCE POLICIES.  Contributors carry property, liability, 
malpractice, workers' compensation and such other types of insurance as is 
customary in the industry.  Valid and enforceable policies in such amounts 
are outstanding and duly in force and will remain duly in force through the 
Closing Date.  All such policies are described in EXHIBIT 2.20 attached 
hereto and true and correct copies have been delivered to Pentegra.   Neither 
Shareholder nor Contributors have not received notice or other communication 
from the issuer of any such insurance policy cancelling or amending such 
policy or threatening to do so.  Contributors have no outstanding settlements 
or premiums owed against any insurance policy.

     2.21 EMPLOYEE BENEFIT PLANS.  Except as set forth on EXHIBIT 2.21 
attached hereto, Contributors neither established, nor maintains, nor is 
obligated to make contributions to or under or otherwise participate in, (a) 
any bonus or other type of compensation or employment plan, program, 
agreement, policy, commitment, contract or arrangement (whether or not set 
forth in a written document); (b) any pension, profit-sharing, retirement or 
other plan, program or arrangement; or (c) any other employee benefit plan, 
fund or program, including, but not limited to, those described in SECTION 
3(3) of the Employee Retirement Income Security Act of 1974, as amended 
("ERISA").  All such plans listed on EXHIBIT 2.20 (individually "Contributors 
Plan," and collectively "Contributors Plans") have been operated and 

                                       7
<PAGE>

administered in all material respects in accordance with all applicable laws, 
rules and regulations, including without limitation, ERISA, the Internal 
Revenue Code of 1986, as amended, Title VII of the Civil Rights Act of 1964, 
as amended, the Equal Pay Act of 1967, as amended, the Age Discrimination in 
Employment Act of 1967, as amended, and the related rules and regulations 
adopted by those Federal  agencies responsible for the administration of such 
laws.  No act or failure to act by Contributors has resulted in a "prohibited 
transaction" (as defined in ERISA) with respect to the Contributors Plans.  
No "reportable event" (as defined in ERISA) has occurred with respect to any 
of the Contributors Plans.  Contributors have not previously made, is not 
currently making, and is not obligated in any way to make, any contributions 
to any multiemployer plan within the meaning of the Multi-Employer Pension 
Plan Amendments Act of 1980.  With respect to each Contributors Plan, either 
(i) the value of plan assets (including commitments under insurance 
contracts) is at least equal to the value of plan liabilities or (ii) the 
value of plan liabilities in excess of plan assets is disclosed on the 
Balance Sheet, all as of the Closing Date.

     2.22 ADVERSE AGREEMENTS.  Contributors are not, and will not be as of 
the Closing Date, a party to any agreement or instrument or subject to any 
charter or other corporate restriction or any judgment, order, writ, 
injunction, decree, rule or regulation that materially and adversely affects 
the condition (financial or otherwise), operations, assets, liabilities, 
business or prospects of Contributors, the Business or the Assets.

     2.23 COMPLIANCE WITH LAWS IN GENERAL.  Contributors and Shareholder and 
the conduct of the Business and use of the Assets, have complied with all 
applicable laws, rules, regulations and licensing requirements, including, 
without limitation, the Federal Environmental Protection Act, the 
Occupational Safety and Health Act, the Americans with Disabilities Act and 
any environmental laws and medical waste laws, and there exist no violations 
by Contributors  of any Federal, state or local law or regulation.  
Contributors and Shareholder have not received any notice of a violation of 
any Federal, state and local laws, regulations and ordinances relating to the 
operations of the Business and Assets and no notice of any pending inspection 
or violation of any such law, regulation or ordinance has been received by 
Contributors. 

     2.24 [INTENTIONALLY DELETED] 

     2.25 NO UNTRUE REPRESENTATIONS.  No representation or warranty by 
Contributors or Shareholder in this Agreement, and no Exhibit or certificate 
issued or executed by, or information furnished by, officers or directors of 
Contributors or Shareholder and furnished or to be furnished to Pentegra 
pursuant hereto, or in connection with the transactions contemplated hereby, 
contains or will contain any untrue statement of a material fact, or omits or 
will omit to state a material fact necessary to make the statements or facts 
contained therein not misleading.

     2.26 BANKING RELATIONS.  Set forth in EXHIBIT 2.26 is a complete and 
accurate list of all arrangements that Contributors have with any bank or 
other financial institution, indicating with respect to each relationship the 
type of arrangement maintained (such as checking account, borrowing 
arrangements, safe deposit box, etc.) and the person or persons authorized in 
respect thereof.

     2.27 [INTENTIONALLY DELETED] 

     2.28 [INTENTIONALLY DELETED]

SECTION 3.     REPRESENTATIONS AND WARRANTIES OF PENTEGRA.

     Pentegra hereby represents and warrants to Contributors and Shareholder 
as follows:

     3.1  CORPORATE EXISTENCE: GOOD STANDING.  Pentegra is a corporation duly 
organized and existing and in good standing under the laws of the State of 
Delaware. 

     3.2  POWER AND AUTHORITY; CONSENTS.  Pentegra has corporate power to 
execute, deliver and perform this Agreement and all agreements and other 
documents executed and delivered by it pursuant to this Agreement or to be 
executed and delivered on the Closing Date, and has taken all actions 
required by law, its Certificate of Incorporation, 

                                       8
<PAGE>

its Bylaws or otherwise, to authorize the execution, delivery and performance 
of this Agreement and such related documents.  This Agreement and all 
agreements and documents executed and delivered in connection herewith have 
been, or will be as of the Closing Date, duly executed and delivered by 
Pentegra and constitute or will constitute the legal, valid and binding 
obligations of Pentegra, enforceable against Pentegra in accordance with 
their respective terms, except as may be limited by applicable bankruptcy, 
insolvency or similar laws affecting creditors' rights generally or the 
availability of equitable remedies.  The execution and delivery of this 
Agreement, and the agreements executed and delivered pursuant to this 
Agreement or to be executed and delivered on the Closing Date, do not, and, 
the consummation of the actions contemplated hereby will not, violate any 
provision of the Certificate of Incorporation or Bylaws of Pentegra or any 
provisions of, or result in the acceleration of, any obligation under any 
mortgage, lien, lease, agreement, rent, instrument, order, arbitration award, 
judgment or decree to which Pentegra is a party or by which Pentegra is 
bound, or violate any material restrictions of any kind to which Pentegra is 
subject, or result in any lien or encumbrance on any of Pentegra's assets. 
Other than as have been obtained or as would not have a material adverse 
effect, there are no consents of any person or entity required for the 
transaction contemplated hereby on behalf of Pentegra.

     3.3  PERMITS, LICENSES AND GOVERNMENTAL AUTHORIZATIONS.  All building or 
other permits, certificates of occupancy, concessions, grants, franchises, 
licenses, certificates of need and other governmental authorizations and 
approvals required for the conduct of the business of Penegra or waivers 
thereof, have been duly obtained and are in full force and effect, except as 
would not have a material adverse effect upon Pentegra.  Other than as would 
not have a material adverse effect, there are no proceedings pending or, to 
the knowledge of Pentegra, threatened, which may result in the revocation, 
cancellation or suspension, or any adverse modification, of any such licenses 
or permits. 
     
     3.4  LEGAL PROCEEDINGS.  Other than as would not have a material adverse 
effect, neither Pentegra nor its business or assets is subject to any 
pending, nor does Pentegra have knowledge of any threatened, litigation, 
governmental investigation, condemnation or other proceeding against or 
relating to or affecting Pentegra, its business, assets or the transactions 
contemplated by this Agreement, and, to the knowledge of Pentegra, no basis 
for any such action exists, nor is there any legal impediment of which 
Pentegra has knowledge to the continued operation of its business or the use 
of its Assets in the ordinary course. 

     3.5  TAXES.  Pentegra has filed all tax returns (including tax reports 
and other statements) required to have been filed by it, and has paid all 
taxes (including any interest, penalty or additions thereto) required to have 
been paid by it, other than as would not have a material adverse effect.  
Pentegra has not received any notice that any tax deficiency or delinquency 
has been  or may be asserted against Pentegra.  There are no audits relating 
to taxes of Pentegra pending or in process or, to the knowledge of Pentegra, 
threatened. Pentegra is not currently the beneficiary of any waiver of any 
statute of limitations in respect of taxes nor of any extension of time 
within which to file any tax return or to pay any tax assessment or 
deficiency. 

     3.6  COMMISSIONS AND FEES.  Pentegra has not incurred any obligation for 
any finder's, broker's or similar fees in connection with the transactions 
contemplated hereby.

     3.7  CAPITAL STOCK.  The issuance and delivery by Pentegra of shares of 
Pentegra Common Stock in connection with the acquisition contemplated hereby 
will be as of the Closing Date duly and validly authorized by all necessary 
corporate action on the part of Pentegra.  The Pentegra Common Stock to be 
issued in connection with the acquisition contemplated hereby, when issued in 
accordance with the terms of this Agreement, will be validly issued, fully 
paid and nonassessable.  

     3.8  NO UNTRUE REPRESENTATIONS.  No representation or warranty by 
Pentegra in this Agreement, and no Exhibit or certificate issued by officers 
or directors of Pentegra and furnished or to be furnished to Contributors  or 
Shareholder pursuant hereto, or in connection with the transactions 
contemplated hereby, contains or will contain any untrue statement of a 
material fact, or omits or will omit to state a material fact necessary to 
make the statements or facts contained therein not misleading.

                                       9
<PAGE>

SECTION 4.     COVENANTS OF CONTRIBUTORS AND SHAREHOLDER.

     Contributors and Shareholder, jointly and severally, agree that between 
the date hereof and the Closing Date:

     4.1  CONSUMMATION OF AGREEMENT; EXHIBITS.  Contributors and Shareholder 
shall use their best efforts to cause the consummation of the transactions 
contemplated hereby in accordance with their terms and conditions.  
Contributors and Shareholder agree to complete the Exhibits hereto to be 
provided by them in form and substance satisfactory to Pentegra.

     4.2  BUSINESS OPERATIONS; CHANGE OF NAME.  Contributors and Shareholder 
shall operate the Business and use the Assets in the ordinary course. 
Contributors and Shareholder shall not enter into any lease, contract, 
indebtedness, commitment, purchase or sale or acquire or dispose of any 
capital asset relating to the Business or the Assets except in the ordinary 
course of business.  Contributors and Shareholder shall use their best 
efforts to preserve the Business and Assets intact and shall not take any 
action that would have an adverse effect on the Business or Assets.  
Contributors and Shareholder shall use their best efforts to preserve intact 
the relationships with payors, customers, suppliers, patients and others 
having significant business relations with Contributors.  Contributors and 
Shareholder shall collect its receivables and pay its trade payables in the 
ordinary course of business.  Contributors and Shareholder shall not 
introduce any new method of management, operations or accounting.  Each 
Contributors shall change its name to a name approved by Pentegra in its 
reasonable discretion.

     4.3  ACCESS AND NOTICE.  Contributors and Shareholder shall permit 
Pentegra and its authorized representatives access to, and make available for 
inspection, all of the assets and business of Contributors, the Business and 
the Assets, including employees, customers and suppliers and permit Pentegra 
and its authorized representatives to inspect and make copies of all 
documents, records and information with respect to the business or assets of 
Contributors, the Business or the Assets as Pentegra or its representatives 
may request. Contributors and Shareholder shall promptly notify Pentegra in 
writing of (a) any notice or communication relating to a default or event 
that, with notice or lapse of time or both, could become a default, under any 
contract, commitment or obligation to which Contributors is a party or 
relating to the Business or the Assets, and (b) any adverse change in 
Contributors's or the Business' financial condition or the Assets.

     4.4  APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS.  Contributors 
and Shareholder shall use their best efforts to secure all necessary 
approvals and consents of third parties to the consummation of the 
transactions contemplated hereby, including consents described on EXHIBIT 
2.4.  

     4.5  ACQUISITION PROPOSALS.  From the execution of this Agreement until 
the earlier of Closing or the termination of this Agreement in accordance 
with the provisions hereof, Contributors and Shareholder shall not, and shall 
use its best efforts to cause Contributors's employees, agents and 
representatives not to, initiate, solicit or encourage, directly or 
indirectly, any inquiries or the making or implementation of any proposal or 
offer, including without limitation, any proposal or offer to Shareholder, 
with respect to a merger, acquisition, consolidation or similar transaction 
involving, or the purchase of all or any significant portion of the assets or 
any equity securities of Contributors or engage in any negotiations 
concerning, or provide any confidential information or data to, or have any 
discussions with, any person relating to such proposal or offer, and 
Contributors and Shareholder will immediately cease any such activities, 
discussions or negotiations heretofore conducted with respect to any of the 
foregoing.  Contributors and Shareholder shall immediately notify Pentegra if 
any such inquiries or proposals are received.

     4.6  FUNDING OF ACCRUED EMPLOYEE BENEFITS.  Contributors hereby 
covenants and agrees that it will take whatever steps are necessary to pay or 
fund completely for any accrued benefits, where applicable, or vested accrued 
benefits for which Contributors or any entity might have any liability 
whatsoever arising from any insurance, pension plan, employment tax or 
similar liability of Contributors to any employee or other person or entity 
(including, without limitation, any Contributors Plan and any liability under 
employment contracts with Contributors) allocable to services performed prior 
to the Closing Date.  Contributors and Shareholder acknowledge that the 
purpose and intent of this covenant is to assure that Pentegra shall have no 
unfunded liability whatsoever at any time after the Closing Date with respect 
to any of Contributors's employees or similar persons or entities, including, 
without limitation, any Contributors Plan for the period prior to the Closing 
Date.

                                      10
<PAGE>

     4.7  EMPLOYEE MATTERS.  Contributors shall not, without the prior 
written approval of Pentegra, except as required by law, increase the cash 
compensation of Shareholder (other than in the ordinary course of business) 
or other employee or an independent contractor of Contributors, adopt, amend 
or terminate any compensation plan, employment agreement, independent 
contractor agreement, employee policies and procedures or employee benefit 
plan, take any action that could deplete the assets of any employee benefit, 
or fail to pay any premium or contribution due or file any report with 
respect to any employee benefit plan, or take any other actions with respect 
to its employees or employee matters which might have an adverse effect upon 
Contributors, its business, assets or prospects.

     4.8  DISTRIBUTIONS AND REPURCHASES.  No distribution, payment or 
dividend of any kind will be declared or paid by Contributors, nor will any 
repurchase of any of Contributors's capital stock be approved or effected.

     4.9  REQUIREMENTS TO EFFECT ACQUISITION.  Contributors and Shareholder 
shall use their best efforts to take, or cause to be taken, all actions 
necessary to effect the acquisition contemplated hereby under applicable law. 

     4.10 ACCOUNTING AND TAX MATTERS.  Contributors and Shareholder will not 
change in any material respect the tax or financial accounting methods or 
practices followed by Contributors (including any material change in any 
assumption underlying, or any method of calculating, any bad debt, 
contingency or other reserve), except as may be required by law or generally 
accepted accounting principles.  Contributors and Shareholder will duly, 
accurately and timely (without regard to any extensions of time) file all 
returns, information statements and other documents relating to taxes of 
Contributors required to be filed by it, and pay all taxes required to be 
paid by it, on or before the Closing Date.

     4.11 WAIVER OF BULK TRANSFER COMPLIANCE.  Pentegra, Shareholder and 
Contributors hereby waive any compliance with the applicable state Bulk 
Transfers Act, if any.  Contributors and Shareholder covenant and agree that 
all of the creditors with respect to the Business and the Assets will be paid 
in full by Contributors prior to the Closing Date, except to extent that any 
liability to such creditors is assumed by Pentegra pursuant to this 
Agreement. If required by Pentegra, Contributors and Shareholder shall 
furnish Pentegra with proof of payment of all creditors with respect to the 
Business and the Assets.  Notwithstanding the foregoing, Contributors and 
Shareholder may dispute the validity or amount of any such creditor's claim 
without being deemed to be in violation of this SECTION 4.11, provided that 
such dispute is in good faith and does not unreasonably delay the resolution 
of the claim and provided, further that Contributors and Shareholder agree to 
indemnify and bond Pentegra for such amounts as is satisfactory to Pentegra. 

     4.12 [INTENTIONALLY DELETED]

     4.13 HIRING OF EMPLOYEES.  Contributors and Shareholder shall cooperate 
with all requests made by Pentegra for the purpose of allowing Pentegra to 
hire those non-dental employees of Contributors designated by Pentegra, such 
employment to be effective as of the Closing Date.  Notwithstanding the 
above, Contributors and Shareholder shall remain liable under any 
Contributors Plans for any claims incurred by any employees or their spouses 
or dependents, and for all compensation, bonuses, benefits and other such 
items and other liabilities related to Contributors's employees incurred by 
Contributors prior to the Closing Date.  

SECTION 5.     COVENANTS OF PENTEGRA. 

     Pentegra agrees that between the date hereof and the Closing: 

     5.1  CONSUMMATION OF AGREEMENT; EXHIBITS.  Pentegra shall use its best 
efforts to cause the consummation of the transactions contemplated hereby in 
accordance with their terms and provisions.  Pentegra agrees to complete the 
Exhibits hereto to be provided by it. 

     5.2  APPROVALS OF THIRD PARTIES AND PERMITS AND CONSENTS.  Pentegra 
shall use its best efforts to secure all necessary approvals and consents of 
third parties to the consummation of the transactions contemplated hereby. 

                                      11
<PAGE>

SECTION 6.  COVENANTS OF PENTEGRA AND CONTRIBUTORS AND SHAREHOLDER. 

     Pentegra, Shareholder and Contributors agree as follows: 

     6.1  FILINGS; OTHER ACTIONS.  Pentegra, Contributors and Shareholder shall
cooperate to promptly prepare and file with the Securities Exchange Commission
("SEC") the Registration Statement on Form S-1 (or other appropriate Form) to
be filed by Pentegra in connection with its Initial Public Offering (including
the prospectus constituting a part thereof, the "Registration Statement"). 
Pentegra shall obtain all necessary state securities laws or "Blue Sky" permits
and approvals required to carry out the transactions contemplated by this
Agreement and the Contributors and Shareholder shall furnish all information
concerning Contributors and Shareholder as may be reasonable requested in
connection with any such action.

     Contributors and Shareholder represent and warrant that none of the
information or documents supplied or to be supplied by it specifically for
inclusion in the Registration Statement, by exhibit or otherwise, will, at the
time the Registration Statement and each amendment or supplement thereto, if
any, becomes effective under the Securities Act of 1933, contain any untrue
statement of a material fact or omit to state any material fact required to be
stated therein or necessary to make the statements therein, in light of the
circumstances under which they were made, not misleading.  Contributors and
Shareholder shall be entitled to review the Registration Statement and each
amendment thereto, if any, prior to the time each becomes effective under the
Securities Act of 1933.

     Contributors and Shareholder shall furnish Pentegra will all information
concerning themselves, their subsidiaries, if any, directors, officers and
stockholders and such other matters as may be reasonable requested by Pentegra
in connection with the preparation of the Registration Statement and each
amendment or supplement thereto, or any other statement, filing, notice or
application made by or on behalf of each such party or any of its subsidiaries
to any governmental entity in connection with the transactions contemplated by
the Other Agreements or this Agreement.

SECTION 7.  PENTEGRA CONDITIONS PRECEDENT.

     The obligations of Pentegra hereunder are subject to the fulfillment at or
prior to the Closing of each of the following conditions:

     7.1  REPRESENTATIONS AND WARRANTIES.  The representations and warranties of
Contributors and Shareholder contained herein shall have been true and correct
in all respects when initially made and shall be true and correct in all
respects as of the Closing Date. 

     7.2  COVENANTS AND CONDITIONS.  Contributors and Shareholder shall have
performed and complied with all covenants and conditions required by this
Agreement to be performed and complied with by Contributors and Shareholder
prior to the Closing Date.

     7.3  PROCEEDINGS.  No action, proceeding or order by any court or
governmental body shall have been threatened orally or in writing, asserted,
instituted or entered to restrain or prohibit the carrying out of the
transactions contemplated hereby.

     7.4  NO MATERIAL ADVERSE CHANGE.  No material adverse change in the
condition (financial or otherwise), operations, assets, liabilities, business or
prospects of Contributors shall have occurred since the Balance Sheet Date.

     7.5  DUE DILIGENCE REVIEW.  By the Closing Date, Pentegra shall have
completed a due diligence review of the business, operations and financial
statements of Contributors, the Business and the Assets, the results of which
shall be satisfactory to Pentegra in its sole discretion. 

     7.6  APPROVAL BY THE BOARD OF DIRECTORS.  This Agreement and the
transactions contemplated hereby shall have been approved by the Board of
Directors of Pentegra or a committee thereof. 


                                      12

<PAGE>

     7.7  CONSENTS AND APPROVALS.  Contributors and Shareholder shall have
obtained all necessary government and other third-party approvals and consents.

     7.8  CLOSING DELIVERIES.  Pentegra shall have received all documents, duly
executed in form satisfactory to Pentegra and its counsel, referred to in
SECTION 9.1.

     7.9  DEBT AND RECEIVABLES.  There shall be no indebtedness, receivables or
payables between Contributors and its Shareholder or affiliates and Contributors
shall not have any liabilities, including indebtedness, guaranties and capital
leases, that are not set forth on EXHIBIT 2.19. 

     7.10 NO CHANGE IN WORKING CAPITAL.  There shall have been no material
change in the working capital of Contributors since the Balance Sheet Date. 

SECTION 8.  CONTRIBUTORS'S AND SHAREHOLDER' CONDITIONS PRECEDENT.

     The obligations of Contributors and Shareholder hereunder are subject to
fulfillment at or prior to the Closing of each of the following conditions:

     8.1  REPRESENTATIONS AND WARRANTIES.  The representations and warranties of
Pentegra contained herein shall have been true and correct in all respects when
initially made and shall be true and correct in all respects as of the Closing
Date.

     8.2  COVENANTS AND CONDITIONS.  Pentegra shall have performed and complied
with all covenants and conditions required by this Agreement to be performed and
complied with by Pentegra prior to the Closing Date.

     8.3  PROCEEDINGS.  No action, proceeding or order by any court or
governmental body shall have been threatened orally or in writing, asserted,
instituted or entered to restrain or prohibit the carrying out of the
transactions contemplated hereby.

     8.4  CLOSING DELIVERIES.  Contributors shall have received all documents,
duly executed in form satisfactory to Contributors and its counsel, referred to
in SECTION 9.2.

     8.5  SECURITIES APPROVAL.  The Registration Statement shall have become
effective under the Securities Act and no stop order suspending the
effectiveness of the Registration Statement shall have been issued and no
proceedings for that purpose shall have been initiated or threatened by the SEC.
At or prior to the date that the Registration Statement is declared effective by
the SEC, Pentegra shall have received all state securities and "Blue Sky"
permits necessary to consummate the transactions contemplated hereby.  The
Pentegra Common Stock shall have been approved for listing on Nasdaq or other
exchange selected by Pentegra, subject only to official notification of 
issuance.

SECTION 9.  CLOSING DELIVERIES.

     9.1  DELIVERIES OF CONTRIBUTORS AND SHAREHOLDER. Within five business days
after requested by Pentegra, Contributors and Shareholder shall deliver to
Pentegra the following, all of which shall be in a form satisfactory to counsel
to Pentegra and shall be held by Jackson & Walker, L.L.P. (counsel for Pentegra)
in escrow pending Closing, pursuant to an escrow agreement or letter agreement
in form and substance mutually acceptable to the parties hereto:

          (a)  a copy of the resolutions of the Board of Directors of 
Contributors authorizing the execution, delivery and performance of this
Agreement and all related documents and agreements each certified by the
Secretary as being true and correct copies of the original thereof;


                                      13

<PAGE>

          (b)  a bill of sale conveying the Assets to Pentegra; 

          (c)  an assignment of each contract, agreement and lease being
assigned to and assumed by Pentegra;  

          (d)  certificates of the Shareholder and a duly authorized officer of
Contributors dated as of the Closing Date, (i) as to the truth and correctness
of the representations and warranties of Contributors and Shareholder contained
herein; (ii) as to the performance of and compliance by Contributors and
Shareholder with all covenants contained herein; and (iii) certifying that all
conditions precedent of Contributors and Shareholder to the Closing have been
satisfied;

          (e)  a certificate of the Secretary of Contributors certifying as to
the incumbency of the directors and officers of Contributors and as to the
signatures of such directors and officers who have executed documents delivered
at the Closing on behalf of Contributors;

          (f)  a certificate, dated within 30 days of the Closing Date, of the
Secretary of the State of incorporation of Contributors and any state of
required foreign qualification of Contributors establishing that Contributors is
in existence and is in good standing to transact business in its state of
incorporation; 

          (g)  an opinion of counsel to Contributors and Shareholder opining as
to the execution and delivery of this Agreement and the other documents and
agreements to be executed pursuant hereto, the good standing and authority of
Contributors, the enforceability of this Agreement and the other agreements and
documents to be executed in connection herewith, and other matters reasonably
requested by Pentegra; 
     
          (h)  non-foreign affidavits executed by Contributors; 

          (i)  all authorizations, consents, approvals, permits and licenses
referred to in SECTIONS 2.3 and 2.4; 

          (j)  evidence of the change of name of Contributors pursuant to
SECTION 4.2; 

          (k)  an executed Registration Rights Agreement between Pentegra and
Contributors, in substantially the form attached hereto as EXHIBIT 9.1(l) (the
"Registration Rights Agreement"); and

          (l)  such other instruments and documents as reasonably requested by
Pentegra to carry out and effect the purpose and intent of this Agreement.

     9.2  DELIVERIES OF PENTEGRA. On or before the Closing Date, Pentegra shall
deliver to Contributors and Shareholder, the following, all of which shall be in
a form satisfactory to counsel to Contributors and Shareholder and shall be held
by Jackson & Walker, L.L.P. (counsel for Pentegra) in escrow pending Closing,
pursuant to an escrow agreement or letter agreement in form and substance
mutually acceptable to the parties hereto:

          (a)  the Acquisition Consideration;

          (b)  an assumption of each contract, agreement and lease being
assigned to and assumed by Pentegra; 

          (c)  a copy of the resolutions of the Board of Directors of Pentegra
(or a committee thereof) authorizing the execution, delivery and performance of
this Agreement and all related documents and agreements each certified by the
Secretary as being true and correct copies of the original thereof;

          (d)  certificates of the President of Pentegra, dated as of the
Closing Date, (i) as to the truth and correctness of the representations and
warranties of Pentegra contained herein; (ii) as to the performance of and


                                      14

<PAGE>

compliance by Pentegra with all covenants contained herein; and (iii) certifying
that all conditions precedent of Pentegra to the Closing have been satisfied; 

          (e)  a certificate of the Secretary of Pentegra certifying as to the
incumbency of the directors and officers of Pentegra and as to the signatures of
such directors and officers who have executed documents delivered at the Closing
on behalf of Pentegra; 

          (f)  certificates, dated within 30 days of the Closing Date, of the
Secretary of the State of Delaware establishing that Pentegra is in existence
and are in good standing to transact business in the State of Delaware and the
State of incorporation of Contributors; 

          (g)  an opinion of counsel to Pentegra opining as to the execution and
delivery of this Agreement and the other documents and agreements to be executed
pursuant hereto, the good standing and authority of Pentegra, the enforceability
of this Agreement and the other agreements and documents to be executed in
connection herewith, and other matters reasonably requested by Contributors; 

          (h)  the executed Registration Rights Agreement; and

          (i)  such other instruments and documents as reasonably requested by
Contributors to carry out and effect the purpose and intent of this Agreement. 

SECTION 10.  NATURE AND SURVIVAL OF REPRESENTATIONS AND WARRANTIES;
             INDEMNIFICATION.

     10.1 NATURE AND SURVIVAL.  All statements contained in this Agreement or in
any Exhibit attached hereto, any agreement executed pursuant hereto, and any
certificate executed and delivered by any party pursuant to the terms of this
Agreement, shall constitute representations and warranties of Contributors and
Shareholder, jointly and severally, or of Pentegra, as the case may be.  All
such representations and warranties, and all representations and warranties
expressly labeled as such in this Agreement shall survive the date of this
Agreement and the Closing Date for a period of five (5) years following the
Closing Date, except that (i) the representations and warranties with respect to
environmental and medical waste laws and health care laws and matters shall
survive for a period of fifteen (15) years and tax representations shall survive
until one year after the expiration of the applicable statute of limitations. 
Each party covenants with the other parties not to make any claim with respect
to such representations and warranties, against any party after the date on
which such survival period shall terminate.  No party shall be entitled to claim
indemnity from any other party pursuant to SECTION 10.2 or 10.3 hereof, unless
such party has timely given the notice required in SECTION 10.2, 10.3 or 10.4
hereof, as the case may be.  Each party hereby releases, acquits and discharges
the other party from any and all claims and demands, actions and causes of
action, damages, costs, expenses and rights of setoff with respect to which the
notices required by SECTION 10.2, 10.3 or 10.4, as applicable, are not timely
provided.

     10.2 INDEMNIFICATION BY PENTEGRA.  PENTEGRA (FOR PURPOSES OF THIS SECTION
10.2 AND, TO THE EXTENT APPLICABLE, SECTION 10.4, "INDEMNITOR"), SHALL INDEMNIFY
AND HOLD CONTRIBUTORS AND THEIR  SHAREHOLDERS, AGENTS AND EMPLOYEES (EACH OF THE
FOREGOING, INCLUDING CONTRIBUTORS AND SHAREHOLDERS, FOR PURPOSES OF THIS SECTION
10.2 AND, TO THE EXTENT APPLICABLE, SECTION 10.4, AN "INDEMNIFIED PERSON"),
HARMLESS FROM AND AGAINST ANY AND ALL LIABILITIES, LOSSES, DAMAGES, ACTIONS,
SUITS, COSTS, DEFICIENCIES AND EXPENSES (INCLUDING, BUT NOT LIMITED TO,
REASONABLE FEES AND DISBURSEMENTS OF COUNSEL THROUGH APPEAL) ARISING FROM OR BY
REASON OF OR RESULTING FROM:

     (A)  ANY BREACH BY INDEMNITOR OF ANY REPRESENTATION, WARRANTY, AGREEMENT
OR COVENANT CONTAINED IN THIS AGREEMENT (INCLUDING THE EXHIBITS HERETO) AND EACH
DOCUMENT, CERTIFICATE OR OTHER INSTRUMENT FURNISHED OR TO BE FURNISHED BY
INDEMNITOR HEREUNDER, AND 

     (B)  AFTER THE CLOSING DATE, INDEMNITOR'S OWNERSHIP OF THE ASSETS, AND


                                      15

<PAGE>

     (C)  ANY LIABILITY UNDER THE SECURITIES ACT, THE EXCHANGE ACT OR ANY OTHER
FEDERAL OR STATE "BLUE SKY" OR SECURITIES LAWS OR REGULATION, AT COMMON LAW OR
OTHERWISE, ARISING OUT OF OR BASED UPON ANY UNTRUE STATEMENT OR ALLEGED UNTRUE
STATEMENT OF A MATERIAL FACT RELATING TO PENTEGRA CONTAINED IN ANY PRELIMINARY
PROSPECTUS, THE REGISTRATION STATEMENT OR ANY PROSPECTUS FORMING A PART THEREOF,
OR ANY AMENDMENT THEREOF OR SUPPLEMENT THERETO, ARISING OUT OF OR BASED UPON ANY
OMISSION OR ALLEGED OMISSION TO STATE THEREIN A MATERIAL FACT RELATING TO
PENTEGRA REQUIRED TO BE STATED THEREIN OR NECESSARY TO MAKE THE STATEMENTS
THEREIN NOT MISLEADING.
 
IN CONNECTION WITH INDEMNITOR'S OBLIGATION TO INDEMNIFY FOR EXPENSES, INDEMNITOR
SHALL REIMBURSE EACH INDEMNIFIED PERSON FOR ALL SUCH EXPENSES AS THEY ARE
INCURRED BY SUCH INDEMNIFIED PERSON, PROVIDED THAT SUCH INDEMNIFIED PERSON
AGREES IN WRITING TO REFUND ALL SUCH REIMBURSED EXPENSES IF AND TO THE EXTENT
THAT IT IS FINALLY JUDICIALLY DETERMINED THAT SUCH INDEMNIFIED PERSON IS NOT
ENTITLED TO INDEMNIFICATION HEREUNDER.

     10.3 INDEMNIFICATION BY CONTRIBUTORS AND SHAREHOLDER.  CONTRIBUTORS AND
SHAREHOLDER (FOR PURPOSES OF THIS SECTION 10.3 AND, TO THE EXTENT APPLICABLE,
SECTION 10.4, "INDEMNITOR"), JOINTLY AND SEVERALLY, SHALL INDEMNIFY AND HOLD
PENTEGRA AND ITS AFFILIATES, OFFICERS, DIRECTORS, SHAREHOLDER, AGENTS AND
EMPLOYEES (EACH OF THE FOREGOING, INCLUDING PENTEGRA, FOR PURPOSES OF THIS
SECTION 10.3 AND, TO THE EXTENT APPLICABLE, SECTION 10.4, AN "INDEMNIFIED
PERSON") HARMLESS FROM AND AGAINST ANY AND ALL LIABILITIES, LOSSES, CLAIMS,
DAMAGES, ACTIONS, SUITS, COSTS, DEFICIENCIES AND EXPENSES (INCLUDING, BUT NOT
LIMITED TO, REASONABLE FEES AND DISBURSEMENTS OF COUNSEL THROUGH APPEAL) ARISING
FROM OR BY REASON OF OR RESULTING FROM OR WITH RESPECT TO:

     (A)   ANY BREACH BY INDEMNITOR OF ANY REPRESENTATION, WARRANTY, AGREEMENT
OR COVENANT CONTAINED IN THIS AGREEMENT (INCLUDING THE EXHIBITS HERETO) AND EACH
DOCUMENT, CERTIFICATE, OR OTHER INSTRUMENT FURNISHED OR TO BE FURNISHED BY
INDEMNITOR HEREUNDER, AND 

     (B)  PRIOR TO AND AFTER THE CLOSING DATE, THE INDEMNITOR'S MANAGEMENT AND
CONDUCT OF THE BUSINESS; 

     (C)  ANY ALLEGED ACT OR NEGLIGENCE OF INDEMNITOR OR ITS EMPLOYEES, AGENTS
AND INDEPENDENT CONTRACTORS IN OR ABOUT CONTRIBUTORS'S BUSINESS WHETHER ON OR
AFTER THE CLOSING DATE,

     (D)  ANY VIOLATION BY CONTRIBUTORS OR ITS SHAREHOLDER OR THEIR CONSULTANTS,
OFFICERS, DIRECTORS, EMPLOYEES, AGENTS AND AFFILIATES OF STATE OR FEDERAL LAWS
GOVERNING HEALTHCARE FRAUD AND ABUSE, OR ANY OVERPAYMENT OR OBLIGATION ARISING
OUT OF OR RESULTING FROM ACTIONS OF THE CONTRIBUTORS OR SHAREHOLDER RELATING TO
CLAIMS SUBMITTED TO ANY THIRD PARTY PAYOR, WHETHER ON OR AFTER THE CLOSING DATE,

     (E)  TAXES OF CONTRIBUTORS OR SHAREHOLDER OR ANY OTHER PERSON OR ENTITY
RELATED TO OR AFFILIATED WITH THE CONTRIBUTORS OR SHAREHOLDER ARISING FROM OR AS
A RESULT OF THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT, 
     
     (F)  ANY LIABILITY OF CONTRIBUTORS OR THE SHAREHOLDER FOR COSTS AND
EXPENSES (INCLUDING, WITHOUT LIMITATION, ATTORNEYS' FEES) INCURRED IN CONNECTION
WITH THE NEGOTIATION, PREPARATION OF CLOSING OF THE TRANSACTIONS CONTEMPLATED BY
THIS AGREEMENT OR THE OTHER DOCUMENTS TO BE EXECUTED IN CONNECTION HEREWITH,


                                      16

<PAGE>

     (G)  ANY ACCRUED UNFUNDED RETIREMENT OR PENSION PLAN LIABILITIES,

     (H)  ANY LIABILITIES THAT ARE  NOT SET FORTH ON EXHIBIT 1.3(b), OR

     (I)  ANY LIABILITY UNDER THE SECURITIES ACT, THE EXCHANGE ACT OR ANY OTHER
FEDERAL OR STATE "BLUE SKY" OR SECURITIES LAWS OR REGULATION, AT COMMON LAW OR
OTHERWISE, ARISING OUT OF OR BASED UPON ANY UNTRUE STATEMENT OR ALLEGED UNTRUE
STATEMENT OF A MATERIAL FACT RELATING TO CONTRIBUTORS OR ITS SHAREHOLDER AND
PROVIDED TO PENTEGRA OR ITS COUNSEL BY THE CONTRIBUTORS OR ITS SHAREHOLDER
SPECIFICALLY FOR INCLUSION IN ANY PRELIMINARY PROSPECTUS, THE REGISTRATION
STATEMENT OR ANY PROSPECTUS FORMING A PART THEREOF, OR ANY AMENDMENT THEREOF OR
SUPPLEMENT THERETO, ARISING OUT OF OR BASED UPON ANY OMISSION OR ALLEGED
OMISSION TO STATE THEREIN A MATERIAL FACT RELATING TO CONTRIBUTORS OR ITS
SHAREHOLDER REQUIRED TO BE STATED THEREIN OR NECESSARY TO MAKE THE STATEMENTS
THEREIN NOT MISLEADING.

IN CONNECTION WITH INDEMNITOR'S OBLIGATION TO INDEMNIFY FOR EXPENSES, INDEMNITOR
SHALL REIMBURSE EACH INDEMNIFIED PERSON FOR ALL SUCH EXPENSES AS THEY ARE
INCURRED BY SUCH INDEMNIFIED PERSON, PROVIDED THAT SUCH INDEMNIFIED PERSON
AGREES IN WRITING TO REFUND ALL SUCH REIMBURSED EXPENSES IF AND TO THE EXTENT
THAT IT IS FINALLY JUDICIALLY DETERMINED THAT SUCH INDEMNIFIED PERSON IS NOT
ENTITLED TO INDEMNIFICATION HEREUNDER.

     10.4 INDEMNIFICATION PROCEDURE.  Within sixty (60) days after Indemnified
Person receives written notice of the commencement of any action or other
proceeding in respect of which indemnification or reimbursement may be sought
hereunder, or within such lesser time as may be provided by law for the defense
of such action or proceeding, such Indemnified Person shall notify Indemnitor
thereof.  If any such action or other proceeding shall be brought against any
Indemnified Person, Indemnitor shall, upon written notice given within a
reasonable time following receipt by Indemnitor of such notice from Indemnified
Person, be entitled to assume the defense of such action or proceeding with
counsel chosen by Indemnitor and reasonably satisfactory to Indemnified Person;
provided, however, that any Indemnified Person may at its own expense retain
separate counsel to participate in such defense.  Notwithstanding the foregoing,
Indemnified Person shall have the right to employ separate counsel at
Indemnitor's expense and to control its own defense of such action or proceeding
if, in the reasonable opinion of counsel to such Indemnified Person, (a) there
are or may be legal defenses available to such Indemnified Person or to other
Indemnified Persons that are different from or additional to those available to
Indemnitor and which could not be adequately advanced by counsel chosen by
Indemnitor, or (b) a conflict or potential conflict exists between Indemnitor
and such Indemnified Person that would make such separate representation
advisable; provided, however, that in no event shall Indemnitor be required to
pay fees and expenses hereunder for more than one firm of attorneys of
Indemnified Person in any jurisdiction in any one action or proceeding or group
of related actions or proceedings.  Indemnitor shall not, without the prior
written consent of any Indemnified Person, settle or compromise or consent to
the entry of any judgment in any pending or threatened claim, action or
proceeding to which such Indemnified Person is a party unless such settlement,
compromise or consent includes an unconditional release of such Indemnified
Person from all liability arising or potentially arising from or by reason of
such claim, action or proceeding.

     10.5 RIGHT OF SETOFF.  In the event of any breach of warranty,
representation, covenant or agreement by Contributors or Shareholder giving rise
to indemnification under SECTION 10.3 or SECTION 10.4 hereof, Pentegra shall be
entitled to offset the amount of damages incurred by it as a result of such
breach of warranty, representation, covenant or agreement against any amounts
payable by Pentegra, including the amounts payable under the Service Agreement.

SECTION 11.  TERMINATION.  This Agreement may be terminated:

     (a)  at any time by mutual agreement of all parties;

                                     17
<PAGE>

     (b)  at any time by Pentegra if any representation or warranty of
Contributors or Shareholder contained in this Agreement or in any certificate or
other document executed and delivered by Contributors or Shareholder pursuant to
this Agreement is or becomes untrue or breached in any material respect or if
Contributors or Shareholder fails to comply in any material respect with any
covenant or agreement contained herein, and any such misrepresentation,
noncompliance or breach is not cured, waived or eliminated within twenty (20)
days after receipt of written notice thereof;

     (c)  at any time by Contributors or Shareholder if any representation or
warranty of Pentegra contained in this Agreement or in any certificate or other
document executed and delivered by Pentegra pursuant to this Agreement is or
becomes untrue or breached in any material respect or if Pentegra fails to
comply in any material respect with any covenant or agreement contained herein
and such misrepresentation, noncompliance or breach is not cured, waived or
eliminated within twenty (20) days after receipt of written notice thereof;

     (d)  by Pentegra, Shareholder or Contributors if the transaction
contemplated hereby shall not have been consummated by December 31, 1997; or

     (e)  by Pentegra at any time prior to the Closing Date if Pentegra
determines in its sole discretion as the result of its legal, financial and
operational due diligence with respect to Contributors, that such termination is
desirable and in the best interests of Pentegra.

SECTION 12.  TRANSFER REPRESENTATIONS.

     12.1 TRANSFER RESTRICTIONS. For a period of one year from the Closing Date,
Contributors shall not voluntarily (a) sell, assign, exchange, transfer,
encumber, pledge, distribute, appoint or otherwise dispose of (i) any shares of
Pentegra Common Stock received by such party hereunder, (ii) any interest
(including without limitation, an option to buy or sell) in any shares of
Pentegra Common Stock, in whole or in part, and no such attempted transfer shall
be treated as effective for any purpose or (b) engage in any transaction,
whether or not with respect to any shares of Pentegra Common Stock or any
interest therein, the intent or effect of which is to reduce the risk of owning
shares of Pentegra Common Stock.  The certificates evidencing the Pentegra
Common Stock delivered to Contributors pursuant to the terms hereof will bear a
legend substantially in the form set forth below and containing such other
information as Pentegra may deem necessary or appropriate:

     The shares represented by this certificate may not be voluntarily sold,
     assigned, exchanged, transferred, encumbered, pledged, distributed,
     appointed or otherwise disposed of, and the issuer shall not be required to
     give effect to any attempted voluntary sale, assignment, exchange,
     transfer, encumbrance, pledge, distribution, appointment or other
     disposition prior to _________ [date that is one year from the Closing
     Date].  Upon the written request of the holder of this certificate, the
     issuer agrees to remove this restrictive legend (and any stop order placed
     with the transfer agent) after the date specified above.

     12.2 INVESTMENTS; COMPLIANCE WITH LAW.  Contributors and Shareholder
acknowledge that the shares of Pentegra Common Stock to be delivered to
Contributors pursuant to this Agreement have not been and will not be registered
under the Securities Act of 1933 and may not be resold without compliance with
the Securities Act of 1933.  The Pentegra Common Stock to be acquired by
Contributors pursuant to this Agreement is being acquired solely for its own
account, for investment purposes only and with no present intention of
distributing, selling or otherwise disposing of it in connection with a
distribution.  Contributors covenants, warrants and represents that none of the
shares of Pentegra Common Stock issued to it will be offered, sold, assigned,
pledged, hypothecated, transferred or otherwise disposed of except after full
compliance with all of the applicable provisions of the Securities Act, as
amended, and the rules and regulations of the Securities Exchange Commission and
applicable state securities laws and regulations.  All certificates evidencing
shares of Pentegra Common Stock shall bear the following legend in addition to
the legend referenced in SECTION 12.1.

     The shares represented hereby have not been registered under the Securities
     Act of 1933 (the "Act") and may only be sold or otherwise transferred if
     the holder hereof complies with the Act and applicable securities laws.

                                     18
<PAGE>

     In addition, certificates evidencing shares of Pentegra Common Stock shall
bear any legend required by the securities or blue sky laws of any state where
Contributors resides.

     12.3 ECONOMIC RISK; SOPHISTICATION.  Contributors and Shareholder are able
to bear the economic risk of an investment in Pentegra Common Stock acquired
pursuant to this Agreement and can afford to sustain a total loss of such
investment and have such knowledge and experience in financial and business
matters that they are capable of evaluating the merits and risks of the proposed
investment and therefore have the capacity to protect their own interests in
connection with the acquisition of the Pentegra Common Stock.  Contributors,
Shareholder and their representatives have had an adequate opportunity to ask
questions and receive answers from the officers of Pentegra concerning any and
all matters relating to the background and experience of the officers and
directors of Pentegra, the plans for the operations of the business of Pentegra,
and any plans for additional acquisitions and the like.  Contributors,
Shareholder and their representatives have asked any and all questions in the
nature described in the preceding sentence and all questions have been answered
to their satisfaction.  Contributors and Shareholder are "accredited investors"
as defined in Regulation D of the Securities Act of 1933, as amended.

SECTION 13.  NONDISCLOSURE OF CONFIDENTIAL INFORMATION.  Contributors and
Shareholder recognize and acknowledge that they had in the past, currently have,
and in the future may possibly have, access to certain confidential information
of Pentegra that is valuable, special and unique assets of Pentegra's
businesses.  Contributors and Shareholder agree that it will not disclose such
confidential information to any person, firm, corporation, association or other
entity for any purpose or reason whatsoever, unless (i) such information becomes
available to or known by the public generally through no fault of Contributors
or Shareholder, (ii) disclosure is required by law or the order of any
governmental authority under color of law, provided, that prior to disclosing
any information pursuant to this clause (ii), Contributors and Shareholder
shall, if possible, give prior written notice thereof to the other parties
hereto, and provide such other parties hereto with the opportunity to contest
such disclosure, (iii) Contributors and Shareholder reasonably believe that such
disclosure is required in connection with the defense of a lawsuit against the
disclosing party, or (iv) Contributors and Shareholder are the sole and
exclusive owner of such confidential information as a result of the transactions
contemplated hereunder or otherwise.  In the event of a breach or threatened
breach by Contributors or Shareholder of the provisions of this SECTION 13,
Pentegra shall be entitled to an injunction restraining Contributors and
Shareholder from disclosing, in whole or in part, such confidential information.
Nothing herein shall be construed as prohibiting Pentegra from pursuing any
other available remedy for such breach or threatened breach, including the
recovery of damages. The obligations of the parties under this SECTION 13 shall
survive the termination of this Agreement.

SECTION 14.  NONCOMPETITION.

     14.1 PROHIBITED ACTIVITIES.  In order to protect Pentegra and each of its
affiliates against the unauthorized use or disclosure of any of their
confidential information presently known or hereinafter acquired by the
Shareholder and the Contributors  and other good and valuable consideration,
Shareholder and the Contributors hereby agree that, subject to adjustment
pursuant to SECTION 14.4, for a period of five (5) years following the Closing
Date, each Contributor and Shareholder and his or her respective affiliates
shall not knowingly, directly or indirectly, for herself or himself or on or
behalf of any other corporation, person, firm, partnership, association or any
other entity (whether as an individual, agent, employee, offer director or in
any other capacity) act as an officer, director, employee, consultant,
shareholder, lender, guarantor or agent of, or otherwise assist any entity which
is engaged in any business of the same nature as, or in direct competition with,
the dental practice management business, consulting business or training
business or any other business in which Pentegra or its affiliates are now
engaged or other business in which such entities become engaged.  The
Contributors and Shareholders agree that, in the event of a breach by them of
the foregoing covenant, the covenant may be enforced by Pentegra by a suit for
damages, by injunction or by restraining order.

     14.2 REASONABLE RESTRAINT.  It is agreed by the parties that the foregoing
covenants in this SECTION 14 impose a reasonable restraint on the Contributors
and Shareholder in light of the activities and business of PRG on the date of
the execution of this Agreement and the future plans of Pentegra.

                                     19
<PAGE>

     14.3 SEVERABILITY; REFORMATION.  The covenants in this SECTION 14 are
severable and separate, and the unenforceability of any specific covenant shall
not affect the provisions of any other covenant.  Moreover, in the event any
court of competent jurisdiction shall determine that the scope, time or
territorial restrictions set forth are unreasonable, then it is the intention of
the parties that such restrictions be enforced to the fullest extent which the
court deems reasonable, and the Agreement shall thereby be reformed.

     14.4 TERM.  It is specifically agreed that the period of five (5) years
stated above, shall be computed by excluding from such computation any time
during which any Contributor or Shareholder is in violation of any provision of
this SECTION 14.  The covenants contained in this SECTION 14 shall have no
effect if the transactions contemplated by this Agreement are not consummated
for any reason but otherwise shall not be affected by any breach of any other
provision hereof by any party hereto.

SECTION 15.  MISCELLANEOUS.

     15.1 TAX COVENANT.  The parties intend that the transactions contemplated
by this Agreement, together with the transactions contemplated by the Other
Agreement and the Initial Public Offering, will qualify as an exchange meeting
the requirements of Section 351 of the Code.  The tax returns (and schedules
thereto) of Shareholder, Contributors and Pentegra shall be filed in a manner
consistent with such intention and Contributors and Pentegra shall each provide
the other with such tax information, reports, returns or schedules as may be
reasonably required to assist the other in so reporting the transactions
contemplated hereby.

     15.2 NOTICES.  Any communications required or desired to be given hereunder
shall be deemed to have been properly given if sent by hand delivery, or by
facsimile AND overnight courier, to the parties hereto at the following
addresses, or at such other address as either party may advise the other in
writing from time to time:

     If to Pentegra:

     Pentegra Dental Group, Inc.
     2999 N. 44th Street, Suite 650
     Phoenix, Arizona 85018
     Attn: President
     Facsimile: (602) 952-0554

     with a copy of each notice directed to Pentegra to:

     James S. Ryan, III, Esquire
     Jackson Walker  L.L.P.
     901 Main Street
     Dallas, Texas 75202
     Facsimile:  (214) 953-5822

     If to Contributors or Shareholder:

     To address set forth on EXHIBIT 15.2

     with a copy to:

     Person and address set forth on EXHIBIT 15.2

All such communications shall be deemed to have been delivered on the date of
hand delivery or on the next business day following the deposit of such
communications, properly addressed and postage prepaid with the overnight
courier.

                                     20
<PAGE>

     15.3 FURTHER ASSURANCES.  Each party hereby agrees to perform any further
acts and to execute and deliver any documents which may be reasonably necessary
to carry out the provisions of this Agreement.

     15.4 EACH PARTY TO BEAR COSTS.  Subject to SECTION 15.12, each of the
parties to this Agreement shall pay all of the costs and expenses incurred by
such party in connection with the transactions contemplated by this Agreement,
whether or not such transactions are consummated.  Without limiting the
generality of the foregoing and whether or not such liabilities may be deemed to
have been incurred in the ordinary course of business, Pentegra shall not be
liable to or required to pay, either directly or indirectly, any fees and
expenses of legal counsel, accountants, auditors or other persons or entities
retained by Contributors or Shareholder for services rendered in connection with
negotiating and closing the transactions contemplated by this Agreement or the
documents to be executed in connection herewith, whether or not such costs or
expenses are incurred before or after the Closing Date.

     15.5 PUBLIC DISCLOSURES.  Each party shall keep this Agreement and its
terms confidential, and shall make no press release or public disclosure, either
written or oral, regarding the transactions contemplated by this Agreement
without the prior written consent of the other party, provided that the
foregoing shall not prohibit any disclosure (a) by press release, filing or
otherwise that Pentegra has determined in good faith judgment to be required by
Federal securities laws or the rules of the National Association of Securities
Dealers, (b) to attorneys, accountants, investment bankers or other agents of
the parties assisting the parties in connection with the transactions
contemplated by this Agreement, and (c) by Pentegra in connection with the
conduct of its Initial Public Offering and conducting an examination of the
operations and assets of Contributors.

     15.6 GOVERNING LAW.  THIS AGREEMENT SHALL BE INTERPRETED, CONSTRUED AND
ENFORCED IN ACCORDANCE WITH THE LAWS OF THE STATE OF INCORPORATION OF
Contributors AND APPLIED WITHOUT GIVING EFFECT TO ANY CONFLICTS OF LAWS
PRINCIPLES.

     15.7 CAPTIONS. The captions or headings in this Agreement are made for
convenience and general reference only and shall not be construed to describe,
define or limit the scope or intent of the provisions of this Agreement.

     15.8 INTEGRATION OF EXHIBITS.  All Exhibits attached to this Agreement are
integral parts of this Agreement as if fully set forth herein, and all
statements appearing therein shall be deemed disclosed for all purposes and not
only in connection with the specific representation in which they are explicitly
referenced.

     15.9 ENTIRE AGREEMENT/AMENDMENT.  THIS INSTRUMENT, INCLUDING ALL EXHIBITS
ATTACHED HERETO, CONTAINS THE ENTIRE AGREEMENT OF THE PARTIES AND SUPERSEDES ANY
AND ALL PRIOR OR CONTEMPORANEOUS AGREEMENTS BETWEEN THE PARTIES, WRITTEN OR
ORAL, WITH RESPECT TO THE TRANSACTIONS CONTEMPLATED HEREBY.

     15.10 COUNTERPARTS.  This Agreement may be executed in several
counterparts, each of which when so executed shall be deemed to be an original,
and such counterparts shall together constitute and be one and the same
instrument

     15.11 BINDING EFFECT/ASSIGNMENT.  This Agreement shall be binding on,
and shall inure to the benefit of, the parties hereto, and their respective
successors and assigns, and no other person shall acquire or have any right
under or by virtue of this Agreement.  No party may assign any right or
obligation hereunder without the prior written consent of the other parties;
provided, however, that Pentegra may assign its rights and delegate its
obligations hereunder to any entity that is an affiliate of Pentegra.  For
purposes of this Agreement an "affiliate" of Pentegra shall include any entity
that, through one or more intermediaries is, controlled, controlled by or under
common control with, Pentegra.  Upon any such assignment prior to the Closing,
all references herein to Pentegra (including those to Pentegra Common Stock)
shall be deemed to include references to the assignee and the assignee's common
stock.  Notwithstanding any such assignment, Pentegra shall not, absent a
written release from Contributors, be relieved from its obligations to
Contributors under this Agreement.

     15.12 COSTS OF ENFORCEMENT. In the event that Pentegra, on the one
hand, or Contributors, on the other hand, file suit in any court against any
other party to enforce the terms of this Agreement against the other party or to
obtain

                                     21

<PAGE>

performance by it hereunder, the prevailing party will be entitled to recover
all reasonable costs, including reasonable attorneys' fees, from the other
party as part of any judgment in such suit. The term "prevailing party" shall
mean the party in whose favor final judgment after appeal (if any) is
rendered with respect to the claims asserted in the Complaint.  "Reasonable
attorneys' fees" are those reasonable attorneys' fees actually incurred in
obtaining a judgment in favor of the prevailing party.

     15.13  PRORATIONS.  Contributors agrees to reimburse Pentegra at Closing
a pro rata portion of all taxes levied upon the Assets for the calendar year
in which the Closing occurs.  Such taxes shall be estimated, apportioned and
pro-rated among Contributors and Pentegra as of the Closing Date, and the
prorated amount due Pentegra shall be credited to the cash portion of the
Purchase Consideration.  Upon payment by Pentegra of such taxes actually
assessed and paid on the Assets, Pentegra shall calculate the apportionment
of such taxes and shall pay Contributors or may demand from Contributors, and
Contributors agrees to pay, the amount necessary to correct the estimate and
proration made at Closing.

     15.14  AMENDMENTS; WAIVERS. This Agreement may be amended, modified or
supplemented only by an instrument in writing executed by all the parties
hereto.  Any waiver of the terms and conditions hereof must be in writing,
and signed by the parties hereto.  The waiver of any of the terms and
conditions of this Agreement shall not be construed as a waiver of any other
terms and conditions hereof.

     15.15  ARBITRATION.  Other than pursuant to SECTION 14 hereunder, upon
the request of either Pentegra or the Contributors or Shareholder
(hereinafter referred to as a "Party"), whether made before or after the
institution of any legal proceeding, any dispute among the parties hereto in
any way arising out of, related to, or in connection with this Agreement
(hereinafter a "Dispute"), shall be resolved by binding arbitration in
accordance with the terms of this Section (hereinafter the "Arbitration
Program").

     All Disputes between the Parties shall be resolved by binding
arbitration administered by the American Arbitration Association (the "AAA")
in accordance with the terms of this Arbitration Program, the Commercial
Arbitration Rules of the AAA.  In the event of any inconsistency between this
Arbitration Program and those rules or statutes, then the terms of this
Arbitration Program shall control.

     The parties hereto agree to adhere to all warranties and covenants (as
described herein) until such time as the arbitration process has been
completed and the arbitrators have determined each party's post-arbitration
obligations and responsibilities as it relates to such warranties and
covenants.  No provision of, nor the exercise of any rights under, this
Arbitration Program shall limit the right of any Party at any time to seek or
use ancillary or preliminary judicial or non-judicial self help remedies for
the purposes of obtaining, perfecting, preserving, or foreclosing upon any
personal property in which there has been granted a security interest or lien
by a Party in the Documents. In Disputes involving indebtedness or other
monetary obligations, each Party agrees that the other Party may proceed
against all liable persons, jointly and severally against one or more of
them, without impairing rights against other liable persons.  Nor shall a
Party be required to join the principal obligor or any other liable persons
(e.g., sureties or guarantors) in any proceeding against a particular person.
A Party may release or settle with one or more liable persons as the Party
deems fit without releasing or impairing rights to proceed against any
persons not so released.  All statutes of limitation that would otherwise be
applicable shall apply to any arbitration proceeding.

     The party seeking arbitration shall notify the other Party, in writing,
of that Party's desire to arbitrate a dispute; and each Party shall, within
twenty (20) days from the date such notification is received, select an
arbitrator, and those two arbitrators shall select a third arbitrator within
ten (10) days thereafter.  The issues or claims in dispute shall be committed
to writing, separately stated and numbered, and each party's proposed answers
or contentions shall be signed below the questions. Failure by a party to
select an arbitrator within the prescribed time period shall serve as that
Party's acquiescence and acceptance of the other party's selection of
arbitrator. The arbitrators shall resolve all Disputes in accordance with the
applicable substantive law.  Any Dispute shall be decided by a majority vote
of three arbitrators, unless the claim or amount in controversy does not
exceed $100,000.00, in which case a single arbitrator (who shall have
authority to render a maximum award of $100,000.00, including all damages of
any kind, costs and fees) may decide the Dispute. The arbitrators may grant
any remedy or relief that the arbitrators deem just and equitable and within
the scope of this Arbitration Program.  The arbitrators may also grant such
ancillary relief

                                      22
<PAGE>

as is necessary to make effective the award.  In all arbitration proceedings
the arbitrators shall make specific and written findings of fact and
conclusions of law.  In all arbitration proceedings in which the amount in
controversy exceeds $100,000.00, in the aggregate, the Parties shall have in
addition to the statutory right to seek vacation or modification of any award
pursuant to applicable law, the right to seek vacation or modification of any
award that is based in whole, or in part, on an incorrect or erroneous ruling
of law by appeal to an appropriate court having jurisdiction; provided,
however, that any such application for vacation or modification of an award
based on an incorrect ruling of law must be filed in a court having
jurisdiction over the Dispute within 15 days from the date the award in
rendered.  The arbitrators' findings of fact shall be binding on all Parties
and shall not be subject to further review except as otherwise allowed by
applicable law.

     To the maximum extent practicable, an arbitration proceeding hereunder
shall be concluded within 180 days of the filing of the Dispute with AAA.
Arbitration proceedings hereunder shall be conducted where agreed to in
writing by the Parties or, in the absence of such agreement in Phoeniz,
Arizona or the headquarters of Pentegra if other than Phoeniz, Arizona.  The
provisions of this Arbitration Program shall survive any termination,
amendment, or expiration of the Documents, unless the Parties otherwise
expressly agree in writing making specific reference to this Arbitration
Program.  To the extent permitted by applicable law, the arbitrator shall
have the power to award recovery of all costs and fees (including attorney's
fees, administrative fees, and arbitrators' fees) to the prevailing Party.
This Arbitration Program may be amended, changed, or modified only by a
writing which specifically refers to this Arbitration Program and which is
signed by all the Parties.  If any term, covenant, condition or provision of
the Arbitration Program is found to be unlawful or invalid or unenforceable,
such illegality or invalidity or unenforceable shall not affect the legality,
validity or enforceability of the remaining parts of this Arbitration
Program, and all such remaining parts hereof shall be valid and enforceable
and have full force and effect as if the illegal, invalid or unenforceable
part had not been included.  Each Party agrees to keep all Disputes and
arbitration proceedings strictly confidential, except for disclosures of
information required in the ordinary course of business of the Parties or by
applicable law or regulation.

     15.16  SEVERABILITY.  If any provision of this Agreement shall be found
to be illegal, invalid or unenforceable under present or future laws, such
provision shall be fully severable and this Agreement shall be construed and
enforced as if such provision never comprised a part hereof; and the
remaining provisions hereof shall remain in full force and effect.  In lieu
of such provision, there shall be added automatically as part of this
Agreement, a provision as similar in its terms to such provision as may be
possible and be legal, valid and enforceable.

                                [End of Page]




                                      23
<PAGE>

     IN WITNESS WHEREOF, the parties have executed this Agreement as of the
day and year first above written.
                      
                                   PENTEGRA, LTD.

                                   By: /s/ Kelly W. Reed
                                       ----------------------------------------
                                       Kelly W. Reed, President

                                   NAPILI INTERNTIONAL, INC.

                                   By: /s/ Marcia T. Reed
                                       ----------------------------------------
                                       Marcia T. Reed, President

                                   PENTEGRA DENTAL GROUP, INC.

                                   By: /s/ Kim Rozman
                                       ----------------------------------------
                                   Its: Senior V.P.
                                        ---------------------------------------


                                   /s/ KELLY W. REED                        
                                       ----------------------------------------
                                   Kelly W. Reed
                                

                                   MOR LIMITED PARTNERSHIP
        

                                   By: /s/ Omer K. Reed, D.D.S.
                                       ----------------------------------------
                                       Omer K. Reed, D.D.S.


                                   By: /s/ Marcia J. Reed
                                       ----------------------------------------
                                       Marcia J. Reed


                                   REED TRUST
        

                                   By: /s/ Karl O. Reed
                                       ----------------------------------------
                                       Karl O. Reed, Trustee


                                   By: /s/ Kelly W. Reed
                                       ----------------------------------------
                                       Kelly W. Reed, Trustee


                                   By: /s/ Kevin P. Reed
                                       ----------------------------------------
                                       Kevin P. Reed, Trustee


                                   By: /s/ Kary Reed Wilson
                                       ----------------------------------------
                                       Kary Reed Wilson, Trustee

                                      24
<PAGE>

                              INDEX TO EXHIBITS


EXHIBIT          DESCRIPTION

Annex I     Acquisition Consideration
A           Target Companies
1.1         Assets
1.2(b)      Excluded Assets
1.3(b)      Assumed Liabilities
2.3         Permits and Licenses
2.4         Consents
2.8         Leases
2.10        Encumbrances
2.12        Patents and Trademarks; Names
2.13        Directors and Officers; Payroll Information; Employment Agreements
2.15        Contracts (other than Leases and Employment Agreements)
2.16        Subsequent Events
2.19        Debt
2.20        Insurance Policies
2.21        Employee Benefit Plans
2.26        Banking Relations
9.1(l)      Form of Registration Rights Agreement
15.2        Addresses for Notice

                                      25
<PAGE>

                                    ANNEX I

                          ACQUISITION CONSIDERATION

     The aggregate consideration to be received by the Contributors pursuant
to the Agreement (the "Acquisition Consideration") is the following:


     Cash in the amount of $200,000.00.














                                      26

<PAGE>

                                                                   EXHIBIT 3.1



                        RESTATED CERTIFICATE OF INCORPORATION
                                          OF
                             PENTEGRA DENTAL GROUP, INC. 

          Pentegra Dental Group, Inc. (the "Corporation"), a corporation
organized and existing under and by virtue of the General Corporation Law of the
State of Delaware (the "DGCL"), hereby adopts this Restated Certificate of
Incorporation, which accurately restates and integrates the provisions of the
existing Certificate of Incorporation of the Corporation and all amendments
thereto that are in effect on the date hereof (the "Certificate of
Incorporation") and further amends the provisions of the Certificate
of Incorporation as described below, and does hereby further certify that:

          1.   The name of the Corporation is Pentegra Dental Group, Inc.  The
original certificate of incorporation of the Corporation was filed with the
Secretary of State of the State of Delaware on July 30, 1997.

          2.   The Board of Directors of the Corporation duly adopted a
resolution proposing and declaring advisable the amendments to the Certificate
of Incorporation as described herein, and the holders of a majority of the
Corporation's outstanding capital stock have duly adopted such amendments, all
in accordance with the provisions of Sections 228, 242 and 245 of the DGCL.

          3.   This Restated Certificate of Incorporation is being filed
pursuant to Sections 242 and 245 of the Delaware General Corporation Law in
order to restate the Certificate of Incorporation of the Corporation as amended
to date, and also to amend further the Certificate of Incorporation to provide
that from and after such time that any class of the Corporation's equity
securities is traded on a national securities exchange, the stockholders of the
Corporation may take action only at an annual or special meeting of stockholders
of the Corporation and not via any consent in writing by such stockholders. 
This Restated Certificate of Incorporation is also being filed in order to
change the par value of the common stock and preferred stock from $.01 per share
to $.001 per share.

          4.   The Certificate of Incorporation is hereby restated and further
amended to read in its entirety as follows:

                        RESTATED CERTIFICATE OF INCORPORATION

     FIRST: The name of the corporation is Pentegra Dental Group, Inc.

     SECOND.  The Corporation's registered office in the State of Delaware is
1209 Orange Street, Corporation Trust Center, in the City of Wilmington, County
of New Castle.  The name and address of its registered agent is The Corporation
Trust Company, 1209 Orange Street, Wilmington, Delaware.

<PAGE>

     THIRD.  The purpose of the Corporation is to engage in any lawful act or
activity for which corporations may be organized under the Delaware General
Corporation Law.

     FOURTH.  The aggregate number of shares of capital stock that the
Corporation will have authority to issue is Fifty Million (50,000,000), Forty
Million (40,000,000) of which will be shares of Common Stock, having a par value
of $0.001 per share, and Ten Million (10,000,000) of which will be shares of
preferred stock, having a par value of $0.001 per share.

     Preferred stock may be issued in one or more series as may be determined
from time to time by the Board of Directors.  All shares of any one series of
preferred stock will be identical except as to the dates of issue and the dates
from which dividends on shares of the series issued on different dates will
cumulate, if cumulative.  Authority is hereby expressly granted to the Board of
Directors to authorize the issuance of one or more series of preferred stock,
and to fix by resolution or resolutions providing for the issue of each such
series the voting powers, designations, preferences, and relative,
participating, optional, redemption, conversion, exchange or other special
rights, qualifications, limitations or restrictions of such series, and the
number of shares in each series, to the full extent now or hereafter permitted
by law.

     FIFTH: The number of directors of the Corporation shall be as specified in,
or determined in the manner provided in, the Bylaws.  Election of directors need
not be by written ballot.

     SIXTH.  No stockholder of the Corporation will, solely by reason of holding
shares of any class, have any preemptive or preferential right to purchase or
subscribe for any shares of the Corporation, now or hereafter to be authorized,
or any notes, debentures, bonds or other securities convertible into or carrying
warrants, rights or options to purchase shares of any class, now or hereafter to
be authorized, whether or not the issuance of any such shares or such notes,
debentures, bonds or other securities would adversely affect the dividend,
voting or any other rights of such stockholder.  The Board of Directors may
authorize the issuance of, and the Corporation may issue, shares of any class of
the Corporation, or any notes, debentures, bonds or other securities convertible
into or carrying warrants, rights or options to purchase any such shares,
without offering any shares of any class to the existing holders of any class of
stock of the Corporation.

     SEVENTH.  At all meetings of stockholders, a quorum will be present if the
holders of a majority of the shares entitled to vote at the meeting are
represented at the meeting in person or by proxy.  From and after the first date
as of which any class of the Corporation's equity securities is traded on a
national securities exchange, any action required or permitted to be taken by
the stockholders of the Corporation must be effected at an annual or special
meeting of stockholders of the Corporation and may not be effected by any
consent in writing by such stockholders.

     EIGHTH.  Stockholders of the Corporation will not have the right of
cumulative voting for the election of directors or for any other purpose.

                                      2 
<PAGE>

     NINTH.  The Board of Directors is expressly authorized to alter, amend or
repeal the Bylaws of the Corporation or to adopt new Bylaws.

     TENTH.  The directors shall be classified, with respect to the time for
which they severally hold office, into three classes (Class A, Class B and Class
C), as nearly equal in number as possible, as determined by the Board of
Directors, one class to hold office initially for a term expiring at the annual
meeting of stockholders to be held in 1998, another class to hold office
initially for a term expiring at the annual meeting of stockholders to be held
in 1999 and another class to hold office for a term expiring at the annual
meeting of stockholders to be held in 2000, with members of each class to hold
office until whichever of the following occurs first: his or her successor is
elected and qualified, his or her resignation, his or her removal from office by
the stockholders or his or her death.  At each annual meeting of stockholders of
the Corporation, the successors to the class of directors whose term expires at
the meeting shall be elected to hold office for a term expiring at the annual
meeting of stockholders held in the third year following the year of their
election.  

     ELEVENTH.  (a)  The Corporation will, to the fullest extent permitted by
the Delaware General Corporation Law, as the same exists or may hereafter be
amended, indemnify any and all persons it has power to indemnify under such law
from and against any and all of the expenses, liabilities or other matters
referred to in or covered by such law.  Such indemnification may be provided
pursuant to any Bylaw, agreement, vote of stockholders or disinterested
directors or otherwise, both as to action in his director or officer capacity
and as to action in another capacity while holding such office, will continue as
to a person who has ceased to be a director, officer, employee or agent, and
will inure to the benefit of the heirs, executors and administrators of such a
person.

     (b)  If a claim under the preceding paragraph (a) is not paid in full by
the Corporation within 30 days after a written claim has been received by the
Corporation, the claimant may at any time thereafter bring suit against the
Corporation to recover the unpaid amount of the claim and, if successful in
whole or in part, the claimant will be entitled to be paid also the expense of
prosecuting such claim.  It will be a defense to any such action (other than an
action brought to enforce a claim for expenses incurred in defending any
proceeding in advance of its final disposition where the required undertaking,
if any is required, has been tendered to the Corporation) that the claimant has
not met the standards of conduct that make it permissible under the laws of the
State of Delaware for the Corporation to indemnify the claimant for the amount
claimed, but the burden of proving such defense will be on the Corporation. 
Neither the failure of the Corporation (including its Board of Directors,
independent legal counsel, or its stockholders) to have made a determination
prior to the commencement of such action that indemnification of the claimant is
proper in the circumstances because he has met the applicable standard of
conduct set forth in the laws of the State of Delaware nor an actual
determination by the Corporation (including its Board of Directors, independent
legal counsel, or its stockholders) that the claimant has not met such
applicable standard of conduct, will be a defense to the action or create a
presumption that the claimant has not met the applicable standard of conduct.

                                      3 
<PAGE>

     TWELFTH.  To the fullest extent permitted by the laws of the State of
Delaware as the same exist or may hereafter be amended, a director of the
Corporation will not be liable to the Corporation or its stockholders for
monetary damages for breach of fiduciary duty as a director.  Any repeal or
modification of this Article will not increase the personal liability of any
director of the Corporation for any act or occurrence taking place before such
repeal or modification, or adversely affect any right or protection of a
director of the Corporation existing at the time of such repeal or modification.
The provisions of this Article shall not be deemed to limit or preclude
indemnification of a director by the Corporation for any liability of a director
that has not been eliminated by the provisions of this Article.



                              [Intentionally left blank]
                                           

















                                      4 
<PAGE>

     IN WITNESS WHEREOF, the Corporation has caused this certificate to be 
executed this 17th day of September, 1997.


                                            PENTEGRA DENTAL GROUP, INC.



                                            By: /s/ Gary S. Glatter
                                               ------------------------------ 
                                               Gary S. Glatter 
                                               President





















                                      5 

<PAGE>

                                                                   EXHIBIT 3.2












                                        BYLAWS

                                          OF

                             PENTEGRA DENTAL GROUP, INC.



<PAGE>
                                  TABLE OF CONTENTS

ARTICLE I

    OFFICES

    Section 1.  REGISTERED OFFICE..............................................1
    Section 2.  OTHER OFFICES..................................................1

ARTICLE II

    STOCKHOLDERS
    Section 1.  PLACE OF MEETINGS..............................................1
    Section 2.  ANNUAL MEETING.................................................1
    Section 3.  LIST OF STOCKHOLDERS...........................................1
    Section 4.  SPECIAL MEETINGS...............................................2
    Section 5.  NOTICE.........................................................2
    Section 6.  QUORUM.........................................................2
    Section 7.  VOTING.........................................................2
    Section 8.  METHOD OF VOTING...............................................2
    Section 9.  RECORD DATE....................................................3
    Section 10. ACTION BY CONSENT..............................................3
    SECTION 11. STOCKHOLDER PROPOSALS..........................................3
    SECTION 12. NOMINATION OF DIRECTORS........................................4

ARTICLE III

    BOARD OF DIRECTORS
    Section 1.  MANAGEMENT.....................................................5
    Section 2.  QUALIFICATION; ELECTION; TERM..................................5
    Section 3.  NUMBER.........................................................6
    Section 4.  REMOVAL........................................................6
    Section 5.  VACANCIES......................................................6
    Section 6.  PLACE OF MEETINGS..............................................7
    Section 7.  ANNUAL MEETING.................................................7
    Section 8.  REGULAR MEETINGS...............................................7
    Section 9.  SPECIAL MEETINGS...............................................7
    Section 10. QUORUM.........................................................7
    Section 11. INTERESTED DIRECTORS...........................................7
    Section 12. COMMITTEES.....................................................8
    Section 13. ACTION BY CONSENT..............................................8
    Section 14. COMPENSATION OF DIRECTORS......................................8

<PAGE>

ARTICLE IV

    NOTICE
    Section 1.  FORM OF NOTICE.................................................8
    Section 2.  WAIVER.........................................................8

 ARTICLE V

    OFFICERS AND AGENTS
    Section 1.  IN GENERAL.....................................................9
    Section 2.  ELECTION.......................................................9
    Section 3.  OTHER OFFICERS AND AGENTS......................................9
    Section 4.  COMPENSATION...................................................9
    Section 5.  TERM OF OFFICE AND REMOVAL.....................................9
    Section 6.  EMPLOYMENT AND OTHER CONTRACTS.................................9
    Section 7.  CHAIRMAN OF THE BOARD OF DIRECTORS.............................9
    Section 8.  CHIEF EXECUTIVE OFFICER...................................... 10
    Section 9.  PRESIDENT.................................................... 10
    Section 10. CHIEF FINANCIAL OFFICER...................................... 10
    Section 11. SECRETARY.................................................... 10
    Section 12. BONDING...................................................... 10

ARTICLE VI

    CERTIFICATES REPRESENTING SHARES
    Section 1.  FORM OF CERTIFICATES......................................... 11
    Section 2.  LOST CERTIFICATES............................................ 11
    Section 3.  TRANSFER OF SHARES........................................... 11
    Section 4.  REGISTERED STOCKHOLDERS...................................... 12

ARTICLE VII

    GENERAL PROVISIONS
    Section 1.  DIVIDENDS.................................................... 12
    Section 2.  RESERVES..................................................... 12
    Section 3.  TELEPHONE AND SIMILAR MEETINGS............................... 12
    Section 4.  BOOKS AND RECORDS............................................ 12
    Section 5.  FISCAL YEAR.................................................. 13
    Section 6.  SEAL......................................................... 13
    Section 7.  ADVANCES OF EXPENSES......................................... 13
    Section 8.  INDEMNIFICATION.............................................. 14
    Section 9.  INSURANCE.................................................... 14
    Section 10. RESIGNATION.................................................. 14
    Section 11. AMENDMENT OF BYLAWS.......................................... 14
    Section 12. INVALID PROVISIONS........................................... 14
    Section 13. RELATION TO THE CERTIFICATE OF INCORPORATION................. 14

<PAGE>

                                        BYLAWS

                                          OF

                             PENTEGRA DENTAL GROUP, INC.


                                      ARTICLE I

                                       OFFICES

     SECTION 1.  REGISTERED OFFICE.  The registered office and registered agent
of Pentegra Dental Group, Inc. (the "Corporation") will be as from time to time
set forth in the Corporation's Certificate of Incorporation (as may be amended
from time to time) or in any certificate filed with the Secretary of State of
the State of Delaware, and the appropriate county Recorder or Recorders, as the
case may be, to amend such information.

     SECTION 2.  OTHER OFFICES.  The Corporation may also have offices at such
other places both within and without the State of Delaware as the Board of
Directors may from time to time determine or the business of the Corporation may
require.

                                      ARTICLE II

                                     STOCKHOLDERS

     SECTION 1.  PLACE OF MEETINGS.  All meetings of the stockholders for the
election of Directors will be held at such place, within or without the State of
Delaware, as may be fixed from time to time by the Board of Directors.  Meetings
of stockholders for any other purpose may be held at such time and place, within
or without the State of Delaware, as may be stated in the notice of the meeting
or in a duly executed waiver of notice thereof.

     SECTION 2.  ANNUAL MEETING.  An annual meeting of the stockholders will be
held at such time as may be determined by the Board of Directors, at which
meeting the stockholders will elect a Board of Directors, and transact such
other business as may properly be brought before the meeting.

     SECTION 3.  LIST OF STOCKHOLDERS.  At least ten days before each meeting of
stockholders, a complete list of the stockholders entitled to vote at said
meeting, arranged in alphabetical order, with the address of and the number of
voting shares registered in the name of each, will be prepared by the officer or
agent having charge of the stock transfer books.  Such list will be open to the
examination of any stockholder, for any purpose germane to the meeting, during
ordinary business hours, for a period of at least ten days prior to the meeting,
either at a place within the city where the meeting is to be held, which place
will be specified in the notice of the meeting, or if not so specified at the
place where the meeting is to be held.  Such list will be produced and kept open
at the time 


                                       1

<PAGE>

and place of the meeting during the whole time thereof, and will be subject 
to the inspection of any stockholder who may be present.

     SECTION 4.  SPECIAL MEETINGS.  Special meetings of the stockholders, for
any purpose or purposes, unless otherwise prescribed by law, the Certificate of
Incorporation or these Bylaws, may be called by the Chairman of the Board, the
Chief Executive Officer, the President or the Board of Directors.  Business
transacted at all special meetings will be confined to the purposes stated in
the notice of the meeting unless all stockholders entitled to vote are present
and consent.

     SECTION 5.  NOTICE.  Written or printed notice stating the place, day and
hour of any meeting of the stockholders and, in case of a special meeting, the
purpose or purposes for which the meeting is called, will be delivered not less
than ten nor more than sixty days before the date of the meeting, either
personally or by mail, by or at the direction of the Chairman of the Board, the
Chief Executive Officer, the President, the Secretary, or the officer or person
calling the meeting, to each stockholder of record entitled to vote at the
meeting.  If mailed, such notice will be deemed to be delivered when deposited
in the United States mail, addressed to the stockholder at his address as it
appears on the stock transfer books of the Corporation, with postage thereon
prepaid.

     SECTION 6.  QUORUM.  At all meetings of the stockholders, the presence in
person or by proxy of the holders of a majority of the shares issued and
outstanding and entitled to vote will be necessary and sufficient to constitute
a quorum for the transaction of business except as otherwise provided by law,
the Certificate of Incorporation or these Bylaws.  If, however, such quorum is
not present or represented at any meeting of the stockholders, the stockholders
entitled to vote thereat, present in person or represented by proxy, will have
power to adjourn the meeting from time to time, without notice other than
announcement at the meeting, until a quorum is present or represented.  If the
adjournment is for more than 30 days, or if after the adjournment a new record
date is fixed for the adjourned meeting, a notice of the adjourned meeting will
be given to each stockholder of record entitled to vote at the meeting.  At such
adjourned meeting at which a quorum is present or represented, any business may
be transacted that might have been transacted at the meeting as originally
notified.

     SECTION 7.  VOTING.  When a quorum is present at any meeting of the
Corporation's stockholders, the vote of the holders of a majority of the shares
entitled to vote on, and voted for or against, any matter will decide any
questions brought before such meeting, unless the question is one upon which, by
express provision of law, the Certificate of Incorporation or these Bylaws, a
different vote is required, in which case such express provision will govern and
control the decision of such question.  The stockholders present in person or by
proxy at a duly organized meeting may continue to transact business until
adjournment, notwithstanding the withdrawal of enough stockholders to leave less
than a quorum.

     SECTION 8.  METHOD OF VOTING.  Each outstanding share of the Corporation's
capital stock, regardless of class, will be entitled to one vote on each matter
submitted to a vote at a meeting of stockholders, except to the extent that the
voting rights of the shares of any class or classes are limited or denied by the
Certificate of Incorporation, as amended from time to time.  At any meeting 


                                       2

<PAGE>

of the stockholders, every stockholder having the right to vote will be 
entitled to vote in person, or by proxy appointed by an instrument in writing 
subscribed by such stockholder and bearing a date not more than three years 
prior to such meeting, unless such instrument provides for a longer period.  
Each proxy will be revocable unless expressly provided therein to be 
irrevocable and if, and only as long as, it is coupled with an interest 
sufficient in law to support an irrevocable power.  A proxy may be made 
irrevocable regardless of whether the interest with which it is coupled is an 
interest in the stock itself or an interest in the Corporation generally.  
Such proxy will be filed with the Secretary of the Corporation prior to or at 
the time of the meeting.  Voting on any question or in any election, other 
than for directors, may be by voice vote or show of hands unless the 
presiding officer orders, or any stockholder demands, that voting be by 
written ballot.

     SECTION 9.  RECORD DATE.  The Board of Directors may fix in advance a
record date for the purpose of determining stockholders entitled to notice of or
to vote at a meeting of stockholders, which record date will not precede the
date upon which the resolution fixing the record date is adopted by the Board of
Directors, and which record date will not be less than ten nor more than sixty
days prior to such meeting.  In the absence of any action by the Board of
Directors, the close of business on the date next preceding the day on which the
notice is given will be the record date, or, if notice is waived, the close of
business on the day next preceding the day on which the meeting is held will be
the record date.

     SECTION 10. ACTION BY CONSENT.  Except as set forth below, any action 
required or permitted by law, the Certificate of Incorporation or these 
Bylaws to be taken at a meeting of the stockholders of the Corporation may be 
taken without a meeting if a consent or consents in writing, setting forth 
the action so taken, is signed by the holders of outstanding stock having not 
less than the minimum number of votes that would be necessary to authorize or 
take such action at a meeting at which all shares entitled to vote thereon 
were present and voted and will be delivered to the Corporation by delivery 
to its registered office in Delaware, its principal place of business or an 
officer or agent of the Corporation having custody of the minute book.  
Notwithstanding the foregoing, from and after the first date that the 
Corporation has received funding from the sale of capital stock of the 
Corporation in an initial public offering, any action required or permitted 
to be taken by the stockholders of the Corporation must be effected at an 
annual or special meeting of the stockholders of the Corporation and may not 
be effected by any consent in writing by the stockholders.

     SECTION 11. STOCKHOLDER PROPOSALS.  No proposal by a stockholder made
pursuant to this Article II may be voted upon at a meeting of stockholders
unless such stockholder shall have delivered or mailed in a timely manner (as
set herein) and in writing to the Secretary of the Corporation (i) notice of
such proposal, (ii) the text of the proposed alteration, amendment or repeal, if
such proposal relates to a proposed change to the Corporation's Certificate of
Incorporation or Bylaws, (iii) evidence reasonably satisfactory to the Secretary
of the Corporation of such stockholder's status as such and of the number of
shares of each class of capital stock of the Corporation of which such
stockholder is the beneficial owner, (iv) a list of the names and addresses of
other beneficial owners of shares of the capital stock of the Corporation, if
any, with whom such stockholder is acting in concert, and the number of shares
of each class of capital stock of the Corporation beneficially owned by each
such beneficial owner and (v) an opinion of 


                                       3

<PAGE>

counsel, which counsel and the form and substance of which opinion shall be 
reasonably satisfactory to the Board of Directors of the Corporation, to the 
effect that the Certificate of Incorporation or Bylaws resulting from the 
adoption of such proposal would not be in conflict with the laws of the State 
of Delaware, if such proposal relates to a proposed change to the 
Corporation's Certificate of Incorporation or Bylaws.  To be timely in 
connection with an annual meeting of stockholders, a stockholder's notice and 
other aforesaid items shall be delivered to or mailed and received at the 
principal executive offices of the Corporation not less than ninety nor more 
than 180 days prior to the earlier of the date of the meeting or the 
corresponding date on which the immediately preceding year's annual meeting 
of stockholders was held.  To be timely in connection with the voting on any 
such proposal at a special meeting of the stockholders, a stockholder's 
notice and other aforesaid items shall be delivered to or mailed and received 
at the principal executive offices of the Corporation not less than forty 
days nor more than sixty days prior to the date of such meeting; provided, 
however, that in the event that less than fifty days' notice or prior public 
disclosure of the date of the special meeting of the stockholders is given or 
made to the stockholders, such stockholder's notice and other aforesaid items 
to be timely must be so received not later than the close of business on the 
seventh day following the day on which such notice of date of the meeting was 
mailed or such public disclosure was made.  Within thirty days (or such 
shorter period that may exist prior to the date of the meeting) after such 
stockholder shall have submitted the aforesaid items, the Secretary and the 
Board of Directors of the Corporation shall respectively determine whether 
the items to be ruled upon by them are reasonably satisfactory and shall 
notify such stockholder in writing of their respective determinations.  If 
such stockholder fails to submit a required item in the form or within the 
time indicated, or if the Secretary or the Board of Directors of the 
Corporation determines that the items to be ruled upon by them are not 
reasonably satisfactory, then such proposal by such stockholder may not be 
voted upon by the stockholders of the Corporation at such meeting of 
stockholders.  The presiding person at each meeting of stockholders shall, if 
the facts warrant, determine and declare to the meeting that a proposal was 
not made in accordance with the procedure prescribed by these Bylaws, and if 
he should so determine, he shall so declare to the meeting and the defective 
proposal shall be disregarded.  The requirements of this Section 11 shall be 
in addition to any other requirements imposed by these Bylaws, by the 
Corporation's Certificate of Incorporation or the law.

     SECTION 12. NOMINATION OF DIRECTORS.  Nominations for the election of
directors may be made by the Board of Directors or by any stockholder (a
"Nominator") entitled to vote in the election of directors.  Such nominations,
other than those made by the Board of Directors, shall be made in writing
pursuant to timely notice delivered to or mailed and received by the Secretary
of the Corporation as set forth in this Section 10.  To be timely in connection
with an annual meeting of stockholders, a Nominator's notice, setting forth the
name and address of the person to be nominated, shall be delivered to or mailed
and received at the principal executive offices of the Corporation not less than
ninety days nor more than 180 days prior to the earlier of the date of the
meeting or the corresponding date on which the immediately preceding year's
annual meeting of stockholders was held.  To be timely in connection with any
election of a director at a special meeting of the stockholders, a Nominator's
notice, setting forth the name and address of the person to be nominated, shall
be delivered to or mailed and received at the principal 


                                       4

<PAGE>

executive offices of the Corporation not later than the close of business on 
the tenth day following the day on which such notice of date of the meeting 
was mailed or such public disclosure was made, whichever first occurs.  At 
such time, the Nominator shall also submit written evidence, reasonably 
satisfactory to the Secretary of the Corporation, that the Nominator is a 
stockholder of the Corporation and shall identify in writing (i) the name and 
address of the Nominator, (ii) the number of shares of each class of capital 
stock of the Corporation of which the Nominator is the beneficial owner, 
(iii) the name and address of each of the persons with whom the Nominator is 
acting in concert and (iv) the number of shares of capital stock of which 
each such person with whom the Nominator is acting in concert is the 
beneficial owner pursuant to which the nomination or nominations are to be 
made.  At such time, the Nominator shall also submit in writing (i) the 
information with respect to each such proposed nominee that would be required 
to be provided in a proxy statement prepared in accordance with Regulation 
14A under the Securities Exchange Act of 1934, as amended, and (ii) a 
notarized affidavit executed by each such proposed nominee to the effect 
that, if elected as a member of the Board of Directors, he will serve and 
that he is eligible for election as a member of the Board of Directors.  
Within thirty days (or such shorter time period that may exist prior to the 
date of the meeting) after the Nominator has submitted the aforesaid items to 
the Secretary of the Corporation, the Secretary of the Corporation shall 
determine whether the evidence of the Nominator's status as a stockholder 
submitted by the Nominator is reasonably satisfactory and shall notify the 
Nominator in writing of his determination.  If the Secretary of the 
Corporation finds that such evidence is not reasonably satisfactory, or if 
the Nominator fails to submit the requisite information in the form or within 
the time indicated, such nomination shall be ineffective for the election at 
the meeting at which such person is proposed to be nominated.  The presiding 
person at each meeting of stockholders shall, if the facts warrant, determine 
and declare to the meeting that a nomination was not made in accordance with 
the procedures prescribed by these bylaws, and if he should so determine, he 
shall so declare to the meeting and the defective nomination shall be 
disregarded.  The requirements of this Section 12 shall be in addition to any 
other requirements imposed by these bylaws, by the Certificate of 
Incorporation or by law.

                                     ARTICLE III

                                  BOARD OF DIRECTORS

     SECTION 1.  MANAGEMENT.  The business and affairs of the Corporation will
be managed by or under the direction of its Board of Directors who may exercise
all such powers of the Corporation and do all such lawful acts and things as are
not by law, by the Certificate of Incorporation or by these Bylaws directed or
required to be exercised or done by the stockholders.

     SECTION 2.  QUALIFICATION; ELECTION; TERM.  None of the Directors need be a
stockholder of the Corporation or a resident of the State of Delaware.  From and
after the date of consummation of the Corporation's initial public offering and
until such time as two-thirds (2/3) of the Directors vote to rescind the
requirements of this sentence, a majority of the directors who constitute the
Board of Directors shall be dentists who are affiliated with dental practices
that have a management services 


                                       5

<PAGE>

relationship with the Corporation.  Any Director who ceases to be a dentist 
affiliated with a dental practice that has a management relationship with the 
Corporation shall immediately resign from the Board (or may be immediately 
removed by the Board if such resignation is not tendered), at which time such 
vacancy may be filled by the vote of a majority of the Directors then in 
office, which vote shall occur within thirty (30) business days of such 
resignation or removal.  No default shall be deemed to have occurred under 
these Bylaws during such thirty (30) day period if the majority of the 
Directors during such period are not dentists affiliated with dental 
practices that have a management services relationship with the Corporation. 
The Directors shall be classified, with respect to the time for which they 
severally hold office, into three classes (Class A, Class B and Class C), as 
nearly equal in number as possible, as determined by the Board of Directors, 
one class to hold office initially for a term expiring at the annual meeting 
of stockholders to be held in 1998, another class to hold office initially 
for a term expiring at the annual meeting of stockholders to be held in 1999 
and another class to hold office for a term expiring at the annual meeting of 
stockholders to be held in 2000, with members of each class to hold office 
until whichever of the following occurs first: his successor is elected and 
qualified, his resignation, his removal from office by the stockholders or 
his death.  At each annual meeting of stockholders of the Corporation, the 
successors to the class of directors whose term expires at the meeting shall 
be elected to hold office for a term expiring at the annual meeting of 
stockholders held in the third year following the year of their election.  
Directors shall be elected by a plurality of the votes of the shares present 
in person or represented by proxy and entitled to vote on the election of 
Directors at any annual or special meeting of stockholders.  Such election 
shall be by written ballot.

     SECTION 3.  NUMBER.  The number of Directors of the Corporation will be at
least one and not more than nineteen.  The number of Directors authorized will
be fixed as the Board of Directors may from time to time designate, or if no
such designation has been made, the number of Directors will be the same as the
number of members of the initial Board of Directors as set forth in the
Certificate of Incorporation.

     SECTION 4.  REMOVAL.  Any Director may be removed, only for cause, at any
special meeting of stockholders by the affirmative vote of the holders of a
majority in number of all outstanding voting stock entitled to vote; provided
that notice of the intention to act upon such matter has been given in the
notice calling such meeting.

     SECTION 5.  VACANCIES.  Newly created directorships resulting from any
increase in the authorized number of Directors and any vacancies occurring in
the Board of Directors caused by death, resignation, retirement,
disqualification or removal from office of any Directors or otherwise, may be
filled by the vote of a majority of the Directors then in office, though less
than a quorum, or a successor or successors may be chosen at a special meeting
of the stockholders called for that purpose, and each successor Director so
chosen will hold office until the next election of the class for which such
Director has been chosen or until whichever of the following occurs first:  his
successor is elected and qualified, his resignation, his removal from office by
the stockholders or his death.


                                       6

<PAGE>

     SECTION 6.  PLACE OF MEETINGS.  Meetings of the Board of Directors, regular
or special, may be held at such place within or without the State of Delaware as
may be fixed from time to time by the Board of Directors.

     SECTION 7.  ANNUAL MEETING.  The first meeting of each newly elected Board
of Directors will be held without further notice immediately following the
annual meeting of stockholders and at the same place, unless by unanimous
consent, the Directors then elected and serving change such time or place.

     SECTION 8.  REGULAR MEETINGS.  Regular meetings of the Board of Directors
may be held without notice at such time and place as is from time to time
determined by resolution of the Board of Directors.

     SECTION 9.  SPECIAL MEETINGS.  Special meetings of the Board of Directors
may be called by the Chairman of the Board, the Chief Executive Officer or the
President on oral or written notice to each Director, given either personally,
by telephone, by telegram or by mail; special meetings will be called by the
Chairman of the Board, Chief Executive Officer, President or Secretary in like
manner and on like notice on the written request of at least three Directors. 
The purpose or purposes of any special meeting will be specified in the notice
relating thereto.

     SECTION 10. QUORUM.  At all meetings of the Board of Directors the presence
of a majority of the number of Directors fixed by these Bylaws will be necessary
and sufficient to constitute a quorum for the transaction of business, and the
affirmative vote of at least a majority of the Directors present at any meeting
at which there is a quorum will be the act of the Board of Directors, except as
may be otherwise specifically provided by law, the Certificate of Incorporation
or these Bylaws.  If a quorum is not present at any meeting of the Board of
Directors, the Directors present thereat may adjourn the meeting from time to
time without notice other than announcement at the meeting, until a quorum is
present.

     SECTION 11. INTERESTED DIRECTORS.  No contract or transaction between the
Corporation and one or more of its Directors or officers, or between the
Corporation and any other corporation, partnership, association or other
organization in which one or more of the Corporation's Directors or officers are
directors or officers or have a financial interest, will be void or voidable
solely for this reason, solely because the Director or officer is present at or
participates in the meeting of the Board of Directors or committee thereof that
authorizes the contract or transaction, or solely because his or their votes are
counted for such purpose, if:  (i) the material facts as to his relationship or
interest and as to the contract or transaction are disclosed or are known to the
Board of Directors or the committee, and the Board of Directors or committee in
good faith authorizes the contract or transaction by the affirmative vote of a
majority of the disinterested Directors, even though the disinterested Directors
be less than a quorum, (ii) the material facts as to his relationship or
interest and as to the contract or transaction are disclosed or are known to the
stockholders entitled to vote thereon, and the contract or transaction is
specifically approved in good faith by vote of the stockholders or (iii) the
contract or transaction is fair as to the Corporation as of the time it is
authorized, approved or ratified by the Board of Directors, a committee thereof
or the stockholders.  


                                       7

<PAGE>

Common or interested directors may be counted in determining the presence of 
a quorum at a meeting of the Board of Directors or of a committee that 
authorizes the contract or transaction.

     SECTION 12. COMMITTEES.  The Board of Directors may, by resolution passed
by a majority of the entire Board, designate committees, each committee to
consist of two or more Directors of the Corporation, which committees will have
such power and authority and will perform such functions as may be provided in
such resolution.  Such committee or committees will have such name or names as
may be designated by the Board and will keep regular minutes of their
proceedings and report the same to the Board of Directors when required.

     SECTION 13. ACTION BY CONSENT.  Any action required or permitted to be
taken at any meeting of the Board of Directors or any committee of the Board of
Directors may be taken without such a meeting if a consent or consents in
writing, setting forth the action so taken, is signed by all the members of the
Board of Directors or such committee, as the case may be.

     SECTION 14. COMPENSATION OF DIRECTORS.  Directors will receive such
compensation for their services and reimbursement for their expenses as the
Board of Directors, by resolution, may establish; provided that nothing herein
contained will be construed to preclude any Director from serving the
Corporation in any other capacity and receiving compensation therefor.

                                      ARTICLE IV

                                        NOTICE

     SECTION 1.  FORM OF NOTICE.  Whenever by law, the Certificate of
Incorporation or of these Bylaws, notice is to be given to any Director or
stockholder, and no provision is made as to how such notice will be given, such
notice may be given in writing, by mail, postage prepaid, addressed to such
Director or stockholder at such address as appears on the books of the
Corporation.  Any notice required or permitted to be given by mail will be
deemed to be given at the time the same is deposited in the United States mails.

     SECTION 2.  WAIVER.  Whenever any notice is required to be given to any
stockholder or Director of the Corporation as required by law, the Certificate
of Incorporation or these Bylaws, a waiver thereof in writing signed by the
person or persons entitled to such notice, whether before or after the time
stated in such notice, will be equivalent to the giving of such notice. 
Attendance of a stockholder or Director at a meeting will constitute a waiver of
notice of such meeting, except where such stockholder or Director attends for
the express purpose of objecting, at the beginning of the meeting, to the
transaction of any business on the ground that the meeting has not been lawfully
called or convened.


                                       8

<PAGE>

                                      ARTICLE V

                                 OFFICERS AND AGENTS

     SECTION 1.  IN GENERAL. The officers of the Corporation will consist of a
Chief Executive Officer, President, Chief Financial Officer and Secretary and
such other officers as shall be elected by the Board of Directors or the Chief
Executive Officer.  Any two or more offices may be held by the same person.

     SECTION 2.  ELECTION.  The Board of Directors, at its first meeting after
each annual meeting of stockholders, will elect the officers, none of whom need
be a member of the Board of Directors.

     SECTION 3.  OTHER OFFICERS AND AGENTS.  The Board of Directors and Chief
Executive Officer may also elect and appoint such other officers and agents as
it or he deems necessary, who will be elected and appointed for such terms and
will exercise such powers and perform such duties as may be determined from time
to time by the Board or the Chief Executive Officer.

     SECTION 4.  COMPENSATION.  The compensation of all officers and agents of
the Corporation will be fixed by the Board of Directors or any committee of the
Board, if so authorized by the Board.

     SECTION 5.  TERM OF OFFICE AND REMOVAL. Each officer of the Corporation
will hold office until his death, his resignation or removal from office, or the
election and qualification of his successor, whichever occurs first.  Any
officer or agent elected or appointed by the Board of Directors or the Chief
Executive Officer may be removed at any time, for or without cause, by the
affirmative vote of a majority of the entire Board of Directors or at the
discretion of the Chief Executive Officer (without regard to how the agent or
officer was elected), but such removal will not prejudice the contract rights,
if any, of the person so removed.  If the office of any officer becomes vacant
for any reason, the vacancy may be filled by the Board of Directors or, in the
case of a vacancy in the office of officer other than Chief Executive Officer
and President, such vacancy may be filled by the Chief Executive Officer. 

     SECTION 6.  EMPLOYMENT AND OTHER CONTRACTS.  The Board of Directors may
authorize any officer or officers or agent or agents to enter into any contract
or execute and deliver any instrument in the name or on behalf of the
Corporation, and such authority may be general or confined to specific
instances.  The Board of Directors may, when it believes the interest of the
Corporation will best be served thereby, authorize executive employment
contracts that will have terms no longer than ten years and contain such other
terms and conditions as the Board of Directors deems appropriate.  Nothing
herein will limit the authority of the Board of Directors to authorize
employment contracts for shorter terms.

     SECTION 7.  CHAIRMAN OF THE BOARD OF DIRECTORS.  If the Board of Directors
has elected a Chairman of the Board, he will preside at all meetings of the
stockholders and the Board of Directors.  


                                       9

<PAGE>

     SECTION 8.  CHIEF EXECUTIVE OFFICER. The Chief Executive Officer will be
the chief executive officer of the Corporation and, subject to the control of
the Board of Directors, will supervise and control all of the business and
affairs of the Corporation.  The Chief Executive Officer shall have the
authority to elect any officer of the Corporation other than the Chief Executive
Officer or President.  He will, in the absence of the Chairman of the Board,
preside at all meetings of the stockholders and the Board of Directors.  The
Chief Executive Officer will have all powers and perform all duties incident to
the office of Chief Executive Officer and will have such other powers and
perform such other duties as the Board of Directors may from time to time
prescribe.  During the absence or disability of the President, the Chief
Executive Officer will exercise the powers and perform the duties of President.

     SECTION 9.  PRESIDENT.  The President will have responsibility for
oversight of the Corporation's operating and development activities.  In the
absence or disability of the Chief Executive Officer and the Chairman of the
Board, the President will exercise the powers and perform the duties of the
Chief Executive Officer.  The President will render to the Directors whenever
they may require it an account of the operating and development activities of
the Corporation and will have such other powers and perform such other duties as
the Board of Directors may from time to time prescribe or as the Chief Executive
Officer may from time to time delegate to him.

     SECTION 10.  CHIEF FINANCIAL OFFICER.  The Chief Financial Officer will
have principal responsibility for the financial operations of the Corporation. 
The Chief Financial Officer will render to the Directors whenever they may
require it an account of the operating results and financial condition of the
Corporation and will have such other powers and perform such other duties as the
Board of Directors may from time to time prescribe or as the Chief Executive
Officer may from time to time delegate to him.
     
     SECTION 11. SECRETARY.  The Secretary will attend all meetings of the
stockholders and record all votes and the minutes of all proceedings in a book
to be kept for that purpose.  The Secretary will perform like duties for the
Board of Directors and committees thereof when required.  The Secretary will
give, or cause to be given, notice of all meetings of the stockholders and
special meetings of the Board of Directors.  The Secretary will keep in safe
custody the seal of the Corporation.  The Secretary will be under the
supervision of the Chief Executive Officer.  The Secretary will have such other
powers and perform such other duties as the Board of Directors may from time to
time prescribe or as the Chief Executive Officer may from time to time delegate
to him.

     SECTION 12. BONDING.  The Corporation may secure a bond to protect the
Corporation from loss in the event of defalcation by any of the officers, which
bond may be in such form and amount and with such surety as the Board of
Directors may deem appropriate.


                                      10

<PAGE>

                                      ARTICLE VI

                           CERTIFICATES REPRESENTING SHARES

     SECTION 1.  FORM OF CERTIFICATES.  Certificates, in such form as may be
determined by the Board of Directors, representing shares to which stockholders
are entitled will be delivered to each stockholder.  Such certificates will be
consecutively numbered and will be entered in the stock book of the Corporation
as they are issued.  Each certificate will state on the face thereof the
holder's name, the number, class of shares, and the par value of such shares or
a statement that such shares are without par value.  They will be signed by the
Chief Executive Officer or President and the Secretary or an Assistant
Secretary, and may be sealed with the seal of the Corporation or a facsimile
thereof.  If any certificate is countersigned by a transfer agent, or an
assistant transfer agent or registered by a registrar, either of which is other
than the Corporation or an employee of the Corporation, the signatures of the
Corporation's officers may be facsimiles.  In case any officer or officers who
have signed, or whose facsimile signature or signatures have been used on such
certificate or certificates, ceases to be such officer or officers of the
Corporation, whether because of death, resignation or otherwise, before such
certificate or certificates have been delivered by the Corporation or its
agents, such certificate or certificates may nevertheless be adopted by the
Corporation and be issued and delivered as though the person or persons who
signed such certificate or certificates or whose facsimile signature or
signatures have been used thereon had not ceased to be such officer or officers
of the Corporation.

     SECTION 2.  LOST CERTIFICATES.  The Board of Directors may direct that a
new certificate be issued in place of any certificate theretofore issued by the
Corporation alleged to have been lost or destroyed, upon the making of an
affidavit of that fact by the person claiming the certificate to be lost or
destroyed.  When authorizing such issue of a new certificate, the Board of
Directors, in its discretion and as a condition precedent to the issuance
thereof, may require the owner of such lost or destroyed  certificate, or his
legal representative, to advertise the same in such manner as it may require
and/or to give the Corporation a bond, in such form, in such sum, and with such
surety or sureties as it may direct as indemnity against any claim that may be
made against the Corporation with respect to the certificate alleged to have
been lost or destroyed.  When a certificate has been lost, apparently destroyed
or wrongfully taken, and the holder of record fails to notify the Corporation
within a reasonable time after such holder has notice of it, and the Corporation
registers a transfer of the shares represented by the certificate before
receiving such notification, the holder of record is precluded from making any
claim against the Corporation for the transfer of a new certificate.

     SECTION 3.  TRANSFER OF SHARES.  Shares of stock will be transferable only
on the books of the Corporation by the holder thereof in person or by such
holder's duly authorized attorney.  Upon surrender to the Corporation or the
transfer agent of the Corporation of a certificate representing shares duly
endorsed or accompanied by proper evidence of succession, assignment or
authority to transfer, it will be the duty of the Corporation or the transfer
agent of the Corporation to issue a new certificate to the person entitled
thereto, cancel the old certificate and record the transaction upon its books.


                                      11

<PAGE>

     SECTION 4.  REGISTERED STOCKHOLDERS.  The Corporation will be entitled to
treat the holder of record of any share or shares of stock as the holder in fact
thereof and, accordingly, will not be bound to recognize any equitable or other
claim to or interest in such share or shares on the part of any other person,
whether or not it has express or other notice thereof, except as otherwise
provided by law.

                                     ARTICLE VII

                                  GENERAL PROVISIONS

     SECTION 1.  DIVIDENDS.  Dividends upon the outstanding shares of the
Corporation, subject to the provisions of the Certificate of Incorporation, if
any, may be declared by the Board of Directors at any regular or special
meeting.  Dividends may be declared and paid in cash, in property, or in shares
of the Corporation, subject to the provisions of the General Corporation Law of
the State of Delaware and the Certificate of Incorporation.  The Board of
Directors may fix in advance a record date for the purpose of determining
stockholders entitled to receive payment of any dividend, such record date will
not precede the date upon which the resolution fixing the record date is
adopted, and such record date will not be more than sixty days prior to the
payment date of such dividend.  In the absence of any action by the Board of
Directors, the close of business on the date upon which the Board of Directors
adopts the resolution declaring such dividend will be the record date.

     SECTION 2.  RESERVES.  There may be created by resolution of the Board of
Directors out of the surplus of the Corporation such reserve or reserves as the
Directors from time to time, in their discretion, deem proper to provide for
contingencies, or to equalize dividends, or to repair or maintain any property
of the Corporation, or for such other purpose as the Directors may deem
beneficial to the Corporation, and the Directors may modify or abolish any such
reserve in the manner in which it was created.  Surplus of the Corporation to
the extent so reserved will not be available for the payment of dividends or
other distributions by the Corporation.

     SECTION 3.  TELEPHONE AND SIMILAR MEETINGS.  Stockholders, directors and
committee members may participate in and hold meetings by means of conference
telephone or similar communications equipment by which all persons participating
in the meeting can hear each other.  Participation in such a meeting will
constitute presence in person at the meeting, except where a person participates
in the meeting for the express purpose of objecting, at the beginning of the
meeting, to the transaction of any business on the ground that the meeting has
not been lawfully called or convened.

     SECTION 4.  BOOKS AND RECORDS.  The Corporation will keep correct and
complete books and records of account and minutes of the proceedings of its
stockholders and Board of Directors, and will keep at its registered office or
principal place of business, or at the office of its transfer agent or
registrar, a record of its stockholders, giving the names and addresses of all
stockholders and the number and class of the shares held by each.


                                      12

<PAGE>

     SECTION 5.  FISCAL YEAR.  The fiscal year of the Corporation will be fixed
by resolution of the Board of Directors.

     SECTION 6.  SEAL.  The Corporation may have a seal, and the seal may be
used by causing it or a facsimile thereof to be impressed or affixed or
reproduced or otherwise.  Any officer of the Corporation will have authority to
affix the seal to any document requiring it.

     SECTION 7.  ADVANCES OF EXPENSES.  The Corporation will advance to its
directors and officers expenses incurred by them in connection with any
"Proceeding," which term includes any threatened, pending or completed action,
suit or proceeding, whether brought by or in the right of the Corporation or
otherwise and whether of a civil, criminal, administrative or investigative
nature (including all appeals therefrom), in which a director or officer may be
or may have been involved as a party or otherwise, by reason of the fact that he
is or was a director or officer of the Corporation, by reason of any action
taken by him or of any inaction on his part while acting as such, or by reason
of the fact that he is or was serving at the request of the Corporation as a
director, officer, trustee, employee or agent of another corporation,
partnership, joint venture, trust, employee benefit plan or other enterprise
("Official," which term also includes directors and officers of the Corporation
in their capacities as directors and officers of the Corporation), whether or
not he is serving in such capacity at the time any liability or expense is
incurred; provided that the Official undertakes to repay all amounts advanced
unless:

           (i)  in the case of all Proceedings other than a Proceeding by
     or in the right of the Corporation, the Official establishes to the
     satisfaction of the disinterested members of the Board of Directors
     that he acted in good faith or in a manner he reasonably believed to
     be in or not opposed to the best interests of the Corporation and,
     with respect to any criminal proceeding, that he did not have
     reasonable cause to believe his conduct was unlawful; provided that
     the termination of any such Proceeding by judgment, order of court,
     settlement, conviction, or upon a plea of nolo contendere or its
     equivalent, shall not by itself create a presumption as to whether the
     Official acted in good faith or in a manner he reasonably believed to
     be in or not opposed to the best interests of the Corporation and,
     with respect to any criminal proceeding, as to whether he had
     reasonable cause to believe his conduct was unlawful; or

          (ii)  in the case of a Proceeding by or in the right of the
     Corporation, the Official establishes to the satisfaction of the
     disinterested members of the Board of Directors that he acted in good
     faith or in a manner he reasonably believed to be in or not opposed to
     the best interests of the Corporation; provided that if in such a
     Proceeding the Official is adjudged to be liable to the Corporation,
     all amounts advanced to the Official for expenses must be repaid
     except to the extent that the court in which such adjudication was
     made shall determine upon application that despite such adjudication,
     in view of all the circumstances, the Official is fairly and
     reasonably entitled to indemnity for such expenses as the court may
     deem proper.


                                      13

<PAGE>

     SECTION 8.  INDEMNIFICATION.  The Corporation will indemnify its directors
and officers to the fullest extent permitted by the General Corporation Law of
the State of Delaware and may, if and to the extent authorized by the Board of
Directors, so indemnify such other persons whom it has the power to indemnify
against any liability, reasonable expense or other matter whatsoever.

     SECTION 9.  INSURANCE.  The Corporation may at the discretion of the Board
of Directors purchase and maintain insurance on behalf of the Corporation and
any person whom it has the power to indemnify pursuant to law, the Certificate
of Incorporation, these Bylaws or otherwise.

     SECTION 10. RESIGNATION.  Any director, officer or agent may resign by
giving written notice to the President or the Secretary.  Such resignation will
take effect at the time specified therein or immediately if no time is specified
therein.  Unless otherwise specified therein, the acceptance of such resignation
will not be necessary to make it effective.

     SECTION 11. AMENDMENT OF BYLAWS.  Other than as set forth herein, these
Bylaws may be altered, amended, or repealed at any meeting of the Board of
Directors at which a quorum is present, by the affirmative vote of a majority of
the Directors present at such meeting.

     SECTION 12. INVALID PROVISIONS.  If any part of these Bylaws is held
invalid or inoperative for any reason, the remaining parts, so far as possible
and reasonable, will be valid and operative.

     SECTION 13. RELATION TO THE CERTIFICATE OF INCORPORATION.  These Bylaws are
subject to, and governed by, the Certificate of Incorporation of the Corporation
as amended from time to time.


                                      14


<PAGE>
                                       
                                                                   EXHIBIT 4.2



                    FORM OF REGISTRATION RIGHTS AGREEMENT

    This Registration Rights Agreement (the "Agreement") is made and entered 
into as of ____________________, 1997, by and among Pentegra Dental Group, 
Inc., a Delaware corporation ("Pentegra"), and each person listed on the 
signature pages hereof under the caption "Stockholder" (the "Stockholder"). 

    This Agreement is made pursuant to the terms of the Agreement and Plan of 
Reorganization or Asset Contribution Agreement dated as of _________________,
by and among Pentegra, and the Stockholder and certain other individuals or 
entities, if any  (the "Plan").  In order to induce the Stockholder to enter 
into the Plan, Pentegra has agreed to provide the registration rights on the 
terms set forth in this Agreement for the benefit of the Stockholder.

    The parties hereto agree as follows:

1.  DEFINITIONS.  All capitalized terms not otherwise defined herein shall 
have the same meaning attributed to them as in the Plan.

2.  PIGGYBACK REGISTRATION RIGHTS.  At any time within two years following 
the date hereof, whenever Pentegra proposes to register any Pentegra Common 
Stock for its own or others' account under the Securities Act for a public 
offering for cash, other than a registration relating to (i) employee benefit 
plans, or (ii) issuance of shares in connection with an acquisition 
transaction under a Registration Statement on Form S-4 (or a successor to 
Form S-4 adopted by the Securities and Exchange Commission ("SEC"), Pentegra 
will give Stockholder prompt written notice of its intent to do so (a 
"Registration Notice") at least thirty (30) days prior to the filing of the 
related registration statement with the SEC.  Such notice shall specify the 
approximate date on which Pentegra proposes to file such registration 
statement and shall contain a statement that the Stockholder is entitled to 
participate in such offering and shall set forth the number of shares of 
Registrable Common (as hereinafter defined) that represents the best estimate 
of the lead managing underwriter (or if not known or applicable, Pentegra) 
that will be available for sale by the holders of Registrable Common in the 
proposed offering.  If Pentegra shall have delivered a Registration Notice, 
Stockholder shall be entitled to participate on the same terms and conditions 
as Pentegra in the public offering to which such Registration Notice relates 
and to offer and sell shares of Registrable Common therein only to the extent 
provided in this SECTION 2.  Stockholder desiring to participate in such 
offering shall notify Pentegra no later than twenty (20) days following 
receipt of the Registration Notice of the aggregate number of shares of 
Registrable Common that Stockholder then desires to sell in the offering.  
Stockholder desiring to participate in such public offering may include 
shares of Registrable Common in the registration statement relating to the 
offering to the extent that the inclusion of such shares shall not reduce the 
number of shares of Pentegra Common Stock to be offered and sold by Pentegra 
to be included therein.  If the lead managing underwriter selected by 
Pentegra for a public offering (or, if the offering is not underwritten, a 
financial advisor to Pentegra) determines that marketing factors require a 
limitation on the number of shares of Registrable Common to be offered and 
sold in such offering, there shall be included in the offering only that 

                                       1
<PAGE>

number of shares of Registrable Common, if any, that such lead managing 
underwriter or financial advisor, as the case may be, reasonably and in good 
faith believes will not jeopardize the success of the offering, provided that 
if the lead managing underwriter or financial advisor, as the case may be, 
determines that marketing factors require a limitation on the number of 
shares of Registrable Common to be offered and sold as aforesaid and so 
notifies Pentegra in writing, the number of shares of Registrable Common to 
be offered and sold by holders desiring to participate in the offering shall 
be allocated among such holders on a pro rata basis based on their holdings 
of Registrable Common.  

    As used herein, "Registrable Common" means shares of Pentegra Common 
Stock that were (i) issued to the Stockholder and certain other stockholders 
pursuant to the Plan or the Other Agreements or (ii) were owned by certain 
stockholders of Pentegra at the Closing Date or (iii) were issued to other 
stockholders of Pentegra pursuant to acquisitions conducted after the date 
hereof, and that, as of the time of determination, have presently 
exercisable registration rights pursuant to the terms of this Agreement or a 
similar agreement (the "Other Registration Rights Agreements") and shall 
include any additional shares of Pentegra Common Stock issued or distributed 
in respect of any such shares by way of stock dividend or distribution or 
stock split or in connection with a combination of shares, recapitalization, 
reorganization, merger, consolidation or otherwise.  For purposes of this 
Agreement and the Other Registration Rights Agreements, shares of Registrable 
Common will cease to be Registrable Common when and to the extent that (i) a 
registration statement covering such shares has been declared effective under 
the Securities Act and such shares have been disposed of pursuant to such 
effective registration statement, (ii) such shares are distributed to the 
public pursuant to Rule 144 (or any similar provision then in force) under 
the Securities Act, or (iii) such shares have been otherwise transferred to a 
party that is not an affiliate of the transferring stockholder and new 
certificates for such shares of Registrable Common not bearing a legend 
restricting further transfer shall have been delivered by Pentegra.

3.  REGISTRATION PROCEDURES.  In connection with registrations under SECTION 
2 hereof, Pentegra shall (a) use its best efforts to prepare and file with 
the SEC as soon as reasonably practicable, a registration statement with 
respect to the Registrable Common and use its best efforts to cause such 
registration to promptly become and remain effective for a period of at least 
120 days (or such shorter period during which holders shall have sold all 
Registrable Common which they requested to be registered) and (ii) in the 
case of any registration of a Stockholder's Registrable Common on Form S-3 
which is intended to be offered on a continuous or delayed basis, such 
120-day period shall be extended, if necessary, to keep the registration 
statement effective until all such shares of Registrable Common are sold; (b) 
prepare and file with the SEC such amendments (including post-effective 
amendments) to such registration statement and supplements to the related 
prospectus to appropriately reflect the plan of distribution of the 
securities registered thereunder until the completion of the distribution 
contemplated by such registration statement or for so long thereafter as a 
dealer is required by law to deliver a prospectus in connection with the 
offer and sale of the shares of Registrable Common covered by such 
registration statement and/or as shall be necessary so that neither such 
registration statement nor the related prospectus shall contain any untrue 
statement of a material fact or omit to state a material fact required to be 
stated therein or necessary to make the statements therein not misleading and 
so that such registration statement and the related prospectus will otherwise 
comply with applicable legal requirements; (c) provide to any Stockholder 

                                       2
<PAGE>

requesting to include shares of Registrable Common in such registration 
statement and a single counsel for all holders of Registrable Common 
requesting to include shares of Registrable Common in such registration 
statement, which counsel shall be selected by the holders of a majority of 
shares of Registrable Common requested to be included in such registration 
statement and shall be reasonably satisfactory to Pentegra, an opportunity to 
review and provide comments with respect to such registration statement (and 
any post-effective amendment thereto) prior to such registration statement 
(or post-effective amendment) becoming effective; (d) use its best efforts to 
register and qualify the Registrable Common covered by such registration 
statement under applicable securities or "Blue Sky" laws of such 
jurisdictions as the holders shall reasonably request for the distribution of 
the Registrable Common; (e) take such other actions as are reasonable and 
necessary to comply with the requirements of the Securities Act and the rules 
and regulations thereunder; (f) furnish such number of prospectuses 
(including preliminary prospectuses) and documents incident thereto as a 
Stockholder from time to time may reasonably request; (g) provide to any 
Stockholder requesting to include Registrable Common in such registration 
statement and any managing underwriter participating in any distribution 
thereof, and to any attorney, accountant or other agent retained by 
Stockholder or managing underwriter, reasonable access to appropriate 
officers and directors of Pentegra to ask questions and to obtain information 
reasonably requested by any Stockholder, managing underwriter, attorney, 
accountant or other agent in connection with such registration statement or 
any amendment thereto, provided, however, that (i) in connection with any 
such access or request, any such requesting persons shall cooperate to the 
extent reasonably practicable to minimize any disruption to the operation by 
Pentegra of its business and (ii) any records, information or documents shall 
be kept confidential by such requesting persons, unless (1) such records, 
information or documents are in the public domain or otherwise publicly 
available or (2) disclosure of such records, information or documents is 
required by court or administrative order or by applicable law (including, 
without limitation, the Securities Act); (h) list or include such Registrable 
Common on any securities exchange on which any stock of Pentegra is then 
listed or included, if the listing or inclusion of such Registrable Common is 
then permitted under the rules of such exchange; (i) use its best efforts to 
keep the Stockholder informed of Pentegra's best estimate of the earliest 
date on which such registration statement or any post-effective amendment 
thereto will become effective and will notify Stockholder and the managing 
underwriters participating in the distribution pursuant to such registration 
statement promptly (i) when Pentegra is informed that such registration 
statement or any post-effective amendment to such registration statement 
becomes effective, (ii) of any request by the SEC for an amendment or any 
supplement to such registration statement or any related prospectus, (iii) of 
the issuance by the SEC of any stop order suspending the effectiveness of 
such registration statement or of any order preventing or suspending the use 
of any related prospectus or the initiation or threat of any proceeding for 
that purpose, (iv) of the suspension of the qualification of any shares of 
Registrable Common included in such registration statement for sale in any 
jurisdiction or the initiation or threat of a proceeding for that purpose, 
(v) of any determination by Pentegra that an event has occurred which makes 
untrue any statement of a material fact made in such registration statement 
or any related prospectus or which requires the making of a change in such 
registration statement or any related prospectus in order that the same will 
not contain any untrue statement of a material fact or omit to state a 
material fact required to be stated therein or necessary to make the 
statements therein not misleading and (vi) of the completion of the 
distribution contemplated by such registration statement if it relates to an 
offering by Pentegra; (j) in the event of the issuance of any stop order 
suspending the effectiveness of such registration 

                                       3
<PAGE>

statement or of any order suspending or preventing the use of any related 
prospectus or suspending the qualification of any shares of Registrable 
Common included in such registration statement for sale in any jurisdiction, 
use its best efforts promptly to obtain its withdrawal; and (k) otherwise use 
its best efforts to comply with all applicable rules and regulations of the 
SEC, and make available to its security holders, as soon as reasonably 
practicable, but not later than fifteen months after the effective date of 
such registration statement, an earnings statement covering the period of at 
least twelve months beginning with the first full fiscal quarter after the 
effective date of such registration statement, which earnings statement shall 
satisfy the provisions of Section 11(a) of the Securities Act.

4.   UNDERWRITING AGREEMENT.  In connection with each registration pursuant 
to SECTION 2 covering an underwritten registered public offering, Pentegra 
and each participating holder agree to enter into a written agreement with 
the managing underwriter in such form and containing such provisions as are 
customary in the securities business for such an arrangement between such 
underwriter and companies of Pentegra's size and investment stature, 
including provisions for indemnification by Pentegra. 

5.  AVAILABILITY OF RULE 144.  Notwithstanding anything contained herein to 
the contrary (including SECTION 2 hereof), Pentegra shall not be obligated to 
register shares of Registrable Common held by any Stockholder at any time (a) 
following the second anniversary of the date hereof or (b) for any 
Stockholder then owning less than 1% of Pentegra's then outstanding Common 
Stock when the resale provisions of Rule 144(k) promulgated under the 
Securities Act are available to Stockholder or Stockholder is otherwise 
entitled to sell the shares of Registrable Common held by him or her without 
registration under the Securities Act and without limitation as to volume or 
manner of sale or both.

6.  RULE 144 REPORTING.  With a view to making available the benefits of 
certain rules and regulations of the SEC which may permit the sale of the 
shares of Registrable Common held by the Stockholder to the public without 
registration, Pentegra agrees to:

    (a)  make and keep public information available as those terms are 
understood and defined in Rule 144 promulgated under the Securities Act, at 
all times from and after ninety (90) days following the effective date of the 
Registration Statement;

    (b)  use its best efforts to file with the SEC in a timely manner all 
reports and other documents required of Pentegra under the Securities Act and 
the Exchange Act at any time after it has become subject to such reporting 
requirements; and

    (c)  so long as a Stockholder owns any shares of Registrable Common, 
furnish to the Stockholder forthwith upon request a written statement by 
Pentegra as to its compliance with the reporting requirements of Rule 144, 
the Securities Act and the Exchange Act (at any time after it has become 
subject to such reporting requirements), a copy of the most recent annual or 
quarterly report of Pentegra, and such other reports and documents so filed 
as a Stockholder may reasonably request in availing itself of any rule or 
regulation of the SEC allowing a Stockholder to sell any such securities 
without registration.

                                       4
<PAGE>

7.  MARKET STANDOFF.   In consideration of the granting to Stockholder of the 
registration rights pursuant to this Agreement, Stockholder agrees that, for 
so long as Stockholder holds shares of Registrable Common, except as 
permitted by SECTION 2 hereof, Stockholder will not sell, transfer or 
otherwise dispose of, including, without limitation, through put or short 
sale arrangements, shares of Pentegra Common Stock in the ten days prior to 
the effectiveness of any registration (other than pursuant to Registration 
Statement on Form S-8 or Form S-4 or any successor forms) of Pentegra Common 
Stock for sale to the public and for up to 90 days following the 
effectiveness of such registration, provided that (i) the underwriters for 
such offering reasonably request and provide written notice to Stockholder 
that the Stockholder be bound by such restrictions and (ii) all directors, 
executive officers and holders of more than five percent of the outstanding 
Pentegra Common Stock agree to the same restrictions.

8.  REGISTRATION ON FORM S-3.  Pentegra shall use its best efforts to qualify 
for registration on Form S-3 or any comparable or successor form or forms.  

9.  REGISTRATION EXPENSES.  All expenses incurred in connection with any 
registration, qualification and compliance under this Agreement (including, 
without limitation, all registration, filing, qualification, legal, printing 
and accounting fees) shall be borne by Pentegra.  All underwriting 
commissions and discounts applicable to shares of Registrable Common included 
in the registrations under this Agreement shall be borne by the holders of 
the securities so registered pro rata on the basis of the number of shares so 
registered.  Subject to the foregoing, all expenses incident to Pentegra's 
performance of or compliance with this Agreement, including, without 
limitation, all filing fees, fees and expenses of compliance with securities 
or blue sky laws (including, without limitation, fees and disbursements of 
counsel in connection with blue sky qualifications of the Registrable 
Common), printing expenses, messenger and delivery expenses, internal 
expenses (including, without limitation, all salaries and expenses of 
Pentegra's officers and employees performing legal or accounting duties), the 
fees and expenses applicable to shares of Registrable Common included in 
connection with the listing of the securities to be registered on each 
securities exchange on which similar securities issued by Pentegra are then 
listed, registrar and transfer agents' fees and fees and disbursements of 
counsel for Pentegra and its independent certified public accountants 
(including, without limitation, the expenses of any "cold comfort" letters 
required by or incident to such performance and the fees and expenses of any 
special audit required or incident to a registration hereunder), securities 
act liability insurance of Pentegra and its officers and directors (if 
Pentegra elects to obtain such insurance), the fees and expenses of any 
special experts retained by Pentegra in connection with such registration and 
fees and expenses of other persons retained by Pentegra incurred in 
connection with each registration hereunder (but not including, without 
limitation, any underwriting fees, discounts or commissions attributable to 
the sale of Registrable Common, fees and expenses of counsel and any other 
special experts retained by the holders of Registrable Common in connection 
with a registration required hereunder, and transfer taxes, if any), will be 
borne by Pentegra.

10. INDEMNIFICATION; CONTRIBUTION.

    (a)  INDEMNIFICATION BY PENTEGRA.  Pentegra agrees to indemnify and hold 
harmless Stockholder, its officers, directors, agents, employees, 
representatives and each person or entity who 

                                       5
<PAGE>

controls Stockholder (within the meaning of the Securities Act) with respect 
to which registration, qualification or compliance has been effected pursuant 
to SECTION 2, against all losses, claims, damages, liabilities and expenses 
(including reasonable costs of investigation) arising out of or based upon 
any untrue statement (or alleged untrue statement) of material fact contained 
in any registration statement, any amendment or supplement thereto, any 
prospectus or preliminary prospectus or any omission (or alleged omission) to 
state therein a material fact required to be stated therein or necessary to 
make the statements therein not misleading, or any violation by Pentegra of 
the Securities Act or any rule or regulation thereunder applicable to 
Pentegra and relating to action or inaction required of Pentegra in 
connection with such registration, qualification or compliance, except 
insofar as the same arise out of or are based upon any such untrue statement 
(or alleged untrue statement) or omission (or alleged omission) based upon 
information with respect to Stockholder furnished in writing to Pentegra by 
Stockholder expressly for use therein.  In connection with an underwritten 
offering, Pentegra will indemnify the underwriters thereof, their officers 
and directors and each person who controls such underwriters (within the 
meaning of the Securities Act) to the same extent as provided above with 
respect to the indemnification of the holders of Registrable Common.

    (b)  INDEMNIFICATION BY HOLDERS OF REGISTRABLE COMMON.  In connection 
with any registration statement in which a holder of Registrable Common is 
participating, each such holder will furnish to Pentegra in writing such 
information with respect to the name and address of such holder, the amount 
of Pentegra Common Stock held by such holder and the nature of such holdings, 
and such other information as is required by Pentegra for use in connection 
with any such registration statement or prospectus.  Each such participating 
Stockholder severally agrees to indemnify and hold harmless Pentegra, its 
directors, officers, agents, employees, representatives and each person or 
entity who controls Pentegra (within the meaning of the Securities Act) 
against any losses, claims, damages, liabilities and expenses (including 
reasonable costs of investigation) arising out of or based upon any untrue 
statement of material fact contained in any registration statement, any 
amendment or supplement thereto, any prospectus or preliminary prospectus or 
any omission to state therein a material fact required to be stated therein 
or necessary to make the statements therein not misleading, to the extent, 
but only to the extent, that such untrue statement or omission is contained 
in any information with respect to such holder so furnished in writing by 
such holder specifically for inclusion in or for use in the preparation of 
any prospectus or registration statement. In no event shall the liability of 
any selling holder of Registrable Common hereunder be greater in amount than 
the dollar amount of the proceeds received by such holder upon the sale of 
the Registrable Common giving rise to such indemnification obligation.

    (c)  CONDUCT OF INDEMNIFICATION PROCEEDINGS.  Any person entitled to 
indemnification hereunder agrees to give prompt written notice to the 
indemnifying party after the receipt by such person of any written notice of 
the commencement of any action, suit, proceeding or investigation or threat 
thereof made in writing for which such person will claim indemnification or 
contribution pursuant to this Agreement; provided, however, that the failure 
to notify the indemnifying party shall not relieve it from its 
indemnification obligations to the indemnified party under this Agreement 
unless the resulting delay is materially prejudicial to the defense of such 
claim; provided, further, that the failure to deliver any such notice shall 
not relieve an indemnifying party of any liability or obligation that it may 
have to an indemnified party otherwise than pursuant to this SECTION 10.  

                                       6
<PAGE>

Unless in the reasonable judgment of such indemnified party (i) a conflict of 
interest may exist between such indemnified party and the indemnifying party 
with respect to such claim or (ii) the named parties to any such action, 
suit, proceeding or investigation (including any impleaded parties) include 
both an indemnifying party and an indemnified party, and such indemnified 
party shall have been advised by counsel that there may be one or more legal 
defenses available to it which are different from or additional to those 
available to the indemnifying party, the indemnified party shall permit the 
indemnifying party to assume the defense of such claim with counsel 
reasonably satisfactory to such indemnified party.  Whether or not such 
defense is assumed by the indemnifying party, the indemnifying party will not 
be subject to any liability for any settlement made without its consent (but 
such consent will not be unreasonably withheld).  No indemnifying party will 
consent to entry of any judgment or enter into any settlement which does not 
include as an unconditional term thereof the giving by the claimant or 
plaintiff to the indemnified party of a release from all liability in respect 
of such claim or litigation.  If the indemnifying party is not entitled to, 
or elects not to, assume the defense of a claim, it will not be obligated to 
pay the fees and expenses of more than one counsel with respect to such 
claim; provided, however, that an indemnified party shall have the right to 
retain its own counsel, with the reasonable fees and expenses of such counsel 
to be paid by the indemnifying party, if the indemnified party, based on the 
advice of counsel, reasonably believes that representation of such 
indemnified party by the counsel retained by the indemnifying party would be 
inappropriate due to actual or potential differing interests between such 
indemnified party and any other party represented by such counsel in such 
proceeding.

    (d)  CONTRIBUTION.  If the indemnification provided for in this SECTION 
10 from the indemnifying party is unavailable to an indemnified party 
hereunder in respect of any losses, claims, damages, liabilities or expenses 
referred to therein, then the indemnifying party, in lieu of indemnifying 
such indemnified party, shall contribute to the amount paid or payable by 
such indemnified party as a result of such losses, claims, damages, 
liabilities or expenses in such proportion as is appropriate to reflect the 
relative fault of the indemnifying party and indemnified parties in 
connection with the actions which resulted in such losses, claims, damages, 
liabilities or expenses, as well as any other relevant equitable 
considerations.  The relative fault of such indemnifying party and 
indemnified parties shall be determined by reference to, among other things, 
whether any untrue statement (or alleged untrue statement) of a material fact 
or omission (or alleged omission) to state a material fact has been made by, 
or relates to information supplied by, such indemnifying party or indemnified 
parties, and the parties' relative intent, knowledge, access to information 
and opportunity to correct or prevent such action.  The amount paid or 
payable by a party as a result of the losses, claims, damages, liabilities 
and expenses referred to above shall be deemed to include, subject to the 
limitations set forth in SECTION 10(c), any legal or other fees or expenses 
reasonably incurred by such party in connection with any investigation or 
proceeding.

    The parties hereto agree that it would not be just and equitable if 
contribution pursuant to this SECTION 10(d) were determined by pro rata 
allocation or by any other method of allocation which does not take account 
of the equitable considerations referred to in the immediately preceding 
paragraph. Notwithstanding the provisions of this SECTION 10(d), no 
underwriter shall be required to contribute any amount in excess of the 
amount by which the total price at which the Registrable Common underwritten 
by it and distributed to the public exceeds the amount of any damages which 
such underwriter has otherwise been required to pay by reason of such untrue 
or alleged untrue 

                                       7
<PAGE>

statement or omission or alleged omission, and no selling holder shall be 
required to contribute any amount in excess of the amount by which the total 
price at which shares of the Registrable Common of such selling holder were 
offered to the public exceeds the amount of any damages which such selling 
holder has otherwise been required to pay by reason of such untrue statement 
or omission.  No person guilty of fraudulent misrepresentation (within the 
meaning of Section 11(f) of the Securities Act) shall be entitled to 
contribution from any person who was not guilty of such fraudulent 
misrepresentation.

    If indemnification is available under this SECTION 10, the indemnifying 
parties shall indemnify each indemnified party to the full extent provided in 
SECTION 10(a) AND (b) without regard to the relative fault of said 
indemnifying party or indemnified party or any other equitable consideration 
provided for in this SECTION 10(d).  The provisions of this SECTION 10 shall 
survive the termination of any or all of the other provisions of this 
Agreement.

11. PARTICIPATION IN UNDERWRITTEN REGISTRATIONS.  No holder of Registrable 
Common may participate in any underwritten registration hereunder unless such 
holder (a) agrees to sell such holder's securities on the basis provided in 
any underwriting arrangements approved by the persons entitled hereunder to 
approve such arrangements and (b) completes and executes all questionnaires, 
powers of attorney, indemnities, underwriting agreements and other documents 
reasonably required under the terms of such underwriting arrangements.

12. TRANSFER OF REGISTRATION RIGHTS; ADDITIONAL GRANTS OF REGISTRATION 
RIGHTS. The registration rights provided to the holders of Registrable Common 
under SECTION 2 hereof may not be transferred to any other person or entity 
except pursuant to the laws of descent and distribution and to immediate 
family members of Stockholder; provided that such transferees shall be bound 
by and subject to the terms and conditions contained herein.  The Company 
may, without the prior consent of the Stockholder, extend the registration 
rights provided in this Agreement to additional persons or entities who 
become holders of Common Stock subsequent to the date of this Agreement by 
entering into similar agreements with such stockholders.  Nothing herein 
shall limit the ability of Pentegra to grant to any person or entity any 
registration or similar rights in the future with respect to Common Stock or 
other securities of Pentegra (whether pursuant to the foregoing or otherwise).

13. MISCELLANEOUS.

    (a)  AMENDMENTS AND WAIVERS.  Except as otherwise provided herein, the 
provisions of this Agreement may not be amended, modified or supplemented, 
and waivers or consents to departures from the provisions hereof may not be 
given unless Pentegra has obtained the written consent of holders of at least 
66 2/3% of the shares of Registrable Common then outstanding and affected by 
such amendment, modification, supplement, waiver or departure.

    (b)  NOTICES.  All notices and other communications provided for or 
permitted hereunder shall be in writing and shall be deemed to have been duly 
given if delivered personally or sent by telex or telecopies, registered or 
certified mail (return receipt requested), postage prepaid, or courier to the 
parties at the following addresses (or at such other address for any party as 
shall be specified by like notice, provided that notices of a change of 
address shall be effective only upon receipt 

                                       8
<PAGE>

thereof).  Notices sent by mail shall be effective when answered back, 
notices sent by telecopier shall be effective when receipt is acknowledged, 
and notices sent by courier guaranteeing next day delivery shall be effective 
on the next business day after timely delivery to the courier.  Notices shall 
be sent to the following addresses:

         (i)  to a Stockholder, at the most current address given by such 
              holder to Pentegra in writing;

         (ii) if to Pentegra, at its address set forth in the Plan.

    (c)  SUCCESSORS AND ASSIGNS.  This Agreement shall inure to the benefit 
of and be binding upon the successors and assigns of each of the parties.

    (d)  COUNTERPARTS.  This Agreement may be executed in any number of 
counterparts and by the parties hereto in separate counterparts, each of 
which when so executed shall be deemed to be an original and all of which 
taken together shall constitute one and the same agreement.

    (e)  HEADINGS.  The headings in this Agreement are for convenience of 
reference only and shall not limit or otherwise affect the meaning hereof.

    (f)  GOVERNING LAW.  THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN 
ACCORDANCE WITH THE LAWS OF THE STATE OF ARIZONA APPLICABLE TO CONTRACTS 
MADE AND TO BE PERFORMED WHOLLY WITHIN THAT STATE.

    (g)  SEVERABILITY.  In the event that any one or more of the provisions 
contained herein, or the application thereof in any circumstances, is held 
invalid, illegal or unenforceable in any respect for any reason, the 
validity, legality and enforceability of any such provision in every other 
respect and of the remaining provisions contained herein shall not be in any 
way impaired thereby, it being intended that all of the rights and privileges 
of the Stockholder shall be enforceable to the fullest extent permitted by 
law.

    (h)  ENTIRE AGREEMENT.  This Agreement, together with the Plan and the 
Other Agreements, is intended by the parties as a final expression of their 
agreement and intended to be a complete and exclusive statement of the 
agreement and understanding of the parties hereto in respect of the subject 
matter contained herein and therein.  This Agreement supersedes all prior 
agreements and understandings between the parties with respect to such 
subject matter.

    (i)  REMEDIES.  In addition to being entitled to exercise all rights 
granted by law, including recovery of damages, Stockholder will be entitled 
to specific performance of its rights under this Agreement.

                                       9
<PAGE>

    EXECUTED as of the date first above written.

                             PENTEGRA:

                             PENTEGRA DENTAL GROUP, INC. 



                             By:                                            
                                 -------------------------------------------
                                 Kim Rozman, Senior Vice President



                             STOCKHOLDER:



                             -----------------------------------------------
                             []



                                      10

<PAGE>
                                       
                                                                   EXHIBIT 4.3



                        REGISTRATION RIGHTS AGREEMENT 

    This Registration Rights Agreement (the "Agreement") is made and entered 
into as of September 30, 1997, by and among Pentegra Dental Group, Inc., a 
Delaware corporation ("Pentegra"), and each person listed on the signature 
pages hereof under the caption "Stockholder" (each a "Stockholder"). 

    WHEREAS, each Stockholder has received or will receive on the closing 
date (the "Closing Date") of Pentegra's initial public offering (the "IPO") 
shares of common stock, par value $.001 per share, of Pentegra ("Pentegra 
Common Stock") pursuant to an agreement with Pentegra; 

    NOW, THEREFORE, in consideration of the premises and mutual covenants and 
agreements set forth herein, and intending to be legally bound hereby, the 
parties to this Agreement agree as follows: 

1.  PIGGYBACK REGISTRATION RIGHTS.  At any time within two years following 
Closing Date, whenever Pentegra proposes to register any Pentegra Common 
Stock for its own or others' account under the Securities Act for a public 
offering for cash, other than a registration relating to (i) employee benefit 
plans, or (ii) issuance of shares in connection with one or more acquisition 
transactions under a Registration Statement on Form S-4 (or a successor to 
Form S-4 adopted by the SEC), Pentegra will give each Stockholder prompt 
written notice of its intent to do so (a "Registration Notice") at least 
thirty (30) days prior to the filing of the related registration statement 
with the SEC.  Such notice shall specify the approximate date on which 
Pentegra proposes to file such registration statement and shall contain a 
statement that each Stockholder is entitled to participate in such offering 
and shall set forth the number of shares of Registrable Common (as 
hereinafter defined) that represents the best estimate of the lead managing 
underwriter (or if not known or applicable, Pentegra) that will be available 
for sale by the holders of Registrable Common in the proposed offering.  If 
Pentegra shall have delivered a Registration Notice, each Stockholder shall 
be entitled to participate on the same terms and conditions as Pentegra in 
the public offering to which such Registration Notice relates and to offer 
and sell shares of Registrable Common therein only to the extent provided in 
this SECTION 1.  Each Stockholder desiring to participate in such offering 
shall notify Pentegra no later than twenty (20) days following receipt of the 
Registration Notice of the aggregate number of shares of Registrable Common 
that such Stockholder then desires to sell in the offering. Each Stockholder 
desiring to participate in such public offering may include shares of 
Registrable Common in the registration statement relating to the offering to 
the extent that the inclusion of such shares shall not reduce the number of 
shares of Pentegra Common Stock to be offered and sold by Pentegra to be 
included therein.  If the lead managing underwriter selected by Pentegra for 
a public offering (or, if the offering is not underwritten, a financial 
advisor to Pentegra) determines that marketing factors require a limitation 
on the number of shares of Registrable Common to be offered and sold in such 
offering, there shall be included in the offering only that number of shares 
of Registrable Common, if any, that such lead managing underwriter or 
financial advisor, as the case may be, reasonably and in good faith believes 
will not jeopardize the success of the offering, provided that if the lead 
managing underwriter or financial advisor, as the case may be, 

<PAGE>

determines that marketing factors require a limitation on the number of 
shares of Registrable Common to be offered and sold as aforesaid and so 
notifies Pentegra in writing, the number of shares of Registrable Common to 
be offered and sold by Stockholders desiring to participate in the offering 
shall be allocated among such Stockholders on a pro rata basis, based on 
their holdings of Registrable Common. 

    As used herein, "Registrable Common" means shares of Pentegra Common 
Stock that are (i) issuable to each Stockholder pursuant to that certain 
Exchange Agreement between such Stockholder and Pentegra dated August ___, 
1997,  or (ii) issued to other stockholders of Pentegra pursuant to 
acquisitions conducted prior to or after the date hereof, and that, as of the 
time of determination, have presently exercisable registration rights 
pursuant to the terms of this Agreement or a similar agreement (the "Other 
Registration Rights Agreements") and shall include any additional shares of 
Pentegra Common Stock issued or distributed in respect of any such shares by 
way of stock dividend or distribution or stock split or in connection with a 
combination of shares, recapitalization, reorganization, merger, 
consolidation or otherwise.  For purposes of this Agreement and the Other 
Registration Rights Agreements, shares of Registrable Common will cease to be 
Registrable Common when and to the extent that (i) a registration statement 
covering such shares has been declared effective under the Securities Act and 
such shares have been disposed of pursuant to such effective registration 
statement, (ii) such shares are distributed to the public pursuant to Rule 
144 (or any similar provision then in force) under the Securities Act, or 
(iii) such shares have been otherwise transferred to a party that is not an 
affiliate of the transferring stockholder and new certificates for such 
shares of Registrable Common not bearing a legend restricting further 
transfer shall have been delivered by Pentegra.

2.  REGISTRATION PROCEDURES.  In connection with registrations under SECTION 
1 hereof, Pentegra shall (a)  prepare and file with the SEC such amendments 
(including post-effective amendments) to such registration statement and 
supplements to the related prospectus to appropriately reflect the plan of 
distribution of the securities registered thereunder until the completion of 
the distribution contemplated by such registration statement or for so long 
thereafter as a dealer is required by law to deliver a prospectus in 
connection with the offer and sale of the shares of Registrable Common 
covered by such registration statement and/or as shall be necessary so that 
neither such registration statement nor the related prospectus shall contain 
any untrue statement of a material fact or omit to state a material fact 
required to be stated therein or necessary to make the statements therein not 
misleading and so that such registration statement and the related prospectus 
will otherwise comply with applicable legal requirements; (b) provide to any 
Stockholder requesting to include shares of Registrable Common in such 
registration statement and a single counsel for all holders of Registrable 
Common requesting to include shares of Registrable Common in such 
registration statement, which counsel shall be selected by the holders of a 
majority of shares of Registrable Common requested to be included in such 
registration statement and shall be reasonably satisfactory to Pentegra, an 
opportunity to review and provide comments with respect to such registration 
statement (and any post-effective amendment thereto) prior to such 
registration statement (or post-effective amendment) becoming effective; (c) 
use its best efforts to register and qualify the Registrable Common covered 
by such registration statement under applicable securities or "Blue Sky" laws 
of such jurisdictions as the holders shall reasonably request for the 
distribution of the Registrable Common; (d) take such other actions as are 
reasonable and necessary to comply with 

<PAGE>

the requirements of the Securities Act and the rules and regulations 
thereunder; (f) furnish such number of prospectuses (including preliminary 
prospectuses) and documents incident thereto as a Stockholder from time to 
time may reasonably request; (e) provide to any Stockholder requesting to 
include Registrable Common in such registration statement and any managing 
underwriter participating in any distribution thereof, and to any attorney, 
accountant or other agent retained by Stockholder or managing underwriter, 
reasonable access to appropriate officers and directors of Pentegra to ask 
questions and to obtain information reasonably requested by any Stockholder, 
managing underwriter, attorney, accountant or other agent in connection with 
such registration statement or any amendment thereto, provided, however, that 
(i) in connection with any such access or request, any such requesting 
persons shall cooperate to the extent reasonably practicable to minimize any 
disruption to the operation by Pentegra of its business and (ii) any records, 
information or documents shall be kept confidential by such requesting 
persons, unless (1) such records, information or documents are in the public 
domain or otherwise publicly available or (2) disclosure of such records, 
information or documents is required by court or administrative order or by 
applicable law (including, without limitation, the Securities Act); (h) list 
or include such Registrable Common on any securities exchange or quotation 
system on which any stock of Pentegra is then listed or included, if the 
listing or inclusion of such Registrable Common is then permitted under the 
rules of such exchange or quotation system; (i) use its best efforts to keep 
the Stockholder informed of Pentegra's best estimate of the earliest date on 
which such registration statement or any post-effective amendment thereto 
will become effective and will notify Stockholder and the managing 
underwriters participating in the distribution pursuant to such registration 
statement promptly (i) when Pentegra is informed that such registration 
statement or any post-effective amendment to such registration statement 
becomes effective, (ii) of any request by the SEC for an amendment or any 
supplement to such registration statement or any related prospectus, (iii) of 
the issuance by the SEC of any stop order suspending the effectiveness of 
such registration statement or of any order preventing or suspending the use 
of any related prospectus or the initiation or threat of any proceeding for 
that purpose, (iv) of the suspension of the qualification of any shares of 
Registrable Common included in such registration statement for sale in any 
jurisdiction or the initiation or threat of a proceeding for that purpose, 
(v) of any determination by Pentegra that an event has occurred which makes 
untrue any statement of a material fact made in such registration statement 
or any related prospectus or which requires the making of a change in such 
registration statement or any related prospectus in order that the same will 
not contain any untrue statement of a material fact or omit to state a 
material fact required to be stated therein or necessary to make the 
statements therein not misleading and (vi) of the completion of the 
distribution contemplated by such registration statement if it relates to an 
offering by Pentegra; (j) in the event of the issuance of any stop order 
suspending the effectiveness of such registration statement or of any order 
suspending or preventing the use of any related prospectus or suspending the 
qualification of any shares of Registrable Common included in such 
registration statement for sale in any jurisdiction, use its best efforts 
promptly to obtain its withdrawal; and (k) otherwise use its best efforts to 
comply with all applicable rules and regulations of the SEC, and make 
available to its security holders, as soon as reasonably practicable, but not 
later than fifteen months after the effective date of such registration 
statement, an earnings statement covering the period of at least twelve 
months beginning with the first full fiscal quarter after the effective date 
of such registration statement, which earnings statement shall satisfy the 
provisions of Section 11(a) of the Securities Act.

<PAGE>

3.   UNDERWRITING AGREEMENT.  In connection with each registration pursuant 
to SECTION 1 covering an underwritten registered public offering, Pentegra 
and each participating stockholder agree to enter into a written agreement 
with the managing underwriter in such form and containing such provisions as 
are customary in the securities business for such an arrangement between such 
underwriter and companies of Pentegra's size and investment stature. 

4.  AVAILABILITY OF RULE 144.  Notwithstanding anything contained herein to 
the contrary (including SECTION 1 hereof), Pentegra shall not be obligated to 
register shares of Registrable Common held by any Stockholder at any time (a) 
following the second anniversary of the Closing Date or (b) for any 
Stockholder then owning less than 1% of the then outstanding shares of 
Pentegra Common Stock when the resale provisions of Rule 144(k) promulgated 
under the Securities Act are available to that Stockholder or that 
Stockholder is otherwise entitled to sell the shares of Registrable Common 
held by him or her without registration under the Securities Act and without 
limitation as to volume or manner of sale or both.

5.  RULE 144 REPORTING.  With a view to making available the benefits of 
certain rules and regulations of the SEC which may permit the sale of the 
shares of Registrable Common held by the Stockholder to the public without 
registration, Pentegra agrees to:

    (a)  make and keep public information available as those terms are 
understood and defined in Rule 144 promulgated under the Securities Act, at 
all times from and after ninety (90) days following the effective date of the 
Registration Statement;

    (b)  use its best efforts to file with the SEC in a timely manner all 
reports and other documents required of Pentegra under the Securities Act and 
the Exchange Act at any time after it has become subject to such reporting 
requirements; and

    (c)  so long as a Stockholder owns any shares of Registrable Common, 
furnish to that Stockholder forthwith upon request a written statement by 
Pentegra as to its compliance with the reporting requirements of Rule 144, 
the Securities Act and the Exchange Act (at any time after it has become 
subject to such reporting requirements), a copy of the most recent annual or 
quarterly report of Pentegra, and such other reports and documents so filed 
as a Stockholder may reasonably request in availing itself of any rule or 
regulation of the SEC allowing a Stockholder to sell any such securities 
without registration.

6.  MARKET STANDOFF.   In consideration of the granting to the Stockholder of 
the registration rights pursuant to this Agreement, each Stockholder agrees 
that, for so long as such Stockholder holds shares of Registrable Common, 
except as permitted by SECTION 1 hereof, such Stockholder will not sell, 
transfer or otherwise dispose of, including, without limitation, through put 
or short sale arrangements, shares of Pentegra Common Stock in the ten days 
prior to the effectiveness of any registration (other than pursuant to 
Registration Statement on Form S-8 or Form S-4 or any successor forms) of 
Pentegra Common Stock for sale to the public and for up to 90 days following 
the effectiveness of such registration, provided that (i) the underwriters 
for such offering reasonably request that the Stockholder be bound by such 
restrictions and (ii) all directors, executive officers 

<PAGE>

and holders of more than five percent of the outstanding Pentegra Common 
Stock agree to the same restrictions.

7.  REGISTRATION EXPENSES.  Except as provided in this Section, all expenses 
incurred in connection with any registration, qualification and compliance 
under this Agreement (including, without limitation, all registration, 
filing, qualification, legal, printing and accounting fees) shall be borne by 
Pentegra. All underwriting commissions and discounts applicable to shares of 
Registrable Common included in the registrations under this Agreement shall 
be borne by the holders of the securities so registered, pro rata on the 
basis of the number of shares so registered.  Subject to the foregoing, all 
expenses incident to Pentegra's performance of or compliance with this 
Agreement, including, without limitation, all filing fees, fees and expenses 
of compliance with securities or blue sky laws (including, without 
limitation, fees and disbursements of counsel in connection with blue sky 
qualifications of the Registrable Common), printing expenses, messenger and 
delivery expenses, internal expenses (including, without limitation, all 
salaries and expenses of Pentegra's officers and employees performing legal 
or accounting duties), registrar and transfer agents' fees and fees and 
disbursements of counsel for Pentegra and its independent certified public 
accountants (including, without limitation, the expenses of any "cold 
comfort" letters required by or incident to such performance and the fees and 
expenses of any special audit required or incident to a registration 
hereunder), securities act liability insurance of Pentegra and its officers 
and directors (if Pentegra elects to obtain such insurance), the fees and 
expenses of any special experts retained by Pentegra in connection with such 
registration and fees and expenses of other persons retained by Pentegra 
incurred in connection with each registration hereunder (but not including, 
without limitation, any underwriting fees, discounts or commissions 
attributable to the sale of Registrable Common, fees and expenses of counsel 
retained by the holders of Registrable Common in connection with a 
registration required hereunder, and transfer taxes, if any), will be borne 
by Pentegra.

8.  INDEMNIFICATION; CONTRIBUTION.

    (a)  INDEMNIFICATION BY PENTEGRA.  Pentegra agrees to indemnify and hold 
harmless Stockholder, its officers, directors, agents, employees, 
representatives and each person or entity who controls Stockholder (within 
the meaning of the Securities Act) with respect to which registration, 
qualification or compliance has been effected pursuant to SECTION 1, against 
all losses, claims, damages, liabilities and expenses (including reasonable 
costs of investigation) arising out of or based upon any untrue statement (or 
alleged untrue statement) of material fact contained in any registration 
statement, any amendment or supplement thereto, any prospectus or preliminary 
prospectus or any omission (or alleged omission) to state therein a material 
fact required to be stated therein or necessary to make the statements 
therein not misleading, or any violation by Pentegra of the Securities Act or 
any rule or regulation thereunder applicable to Pentegra and relating to 
action or inaction required of Pentegra in connection with such registration, 
qualification or compliance, except insofar as the same arise out of or are 
based upon any such untrue statement (or alleged untrue statement) or 
omission (or alleged omission) based upon information with respect to 
Stockholder furnished in writing to Pentegra by Stockholder expressly for use 
therein.  In connection with an underwritten offering, Pentegra will 
indemnify the underwriters thereof, their officers and directors and each 
person who controls such underwriters (within the meaning of the Securities 
Act) on either (i) substantially the same basis on which it will indemnify 
each selling holder of Registrable 

<PAGE>

Common pursuant to the foregoing provisions or (ii) such other basis as is 
customarily obtained by underwriters from issuers at the time of that 
offering. 

    (b)  INDEMNIFICATION BY HOLDERS OF REGISTRABLE COMMON.  In connection 
with any registration statement in which a holder of Registrable Common is 
participating, each such holder will furnish to Pentegra in writing such 
information with respect to the name and address of such holder, the amount 
of Pentegra Common Stock held by such holder and the nature of such holdings, 
and such other information as is required by Pentegra for use in connection 
with any such registration statement or prospectus.  Each such participating 
Stockholder severally agrees to indemnify and hold harmless Pentegra, its 
directors, officers, agents, employees, representatives and each person or 
entity who controls Pentegra (within the meaning of the Securities Act) 
against any losses, claims, damages, liabilities and expenses (including 
reasonable costs of investigation) arising out of or based upon any untrue 
statement of material fact contained in any registration statement, any 
amendment or supplement thereto, any prospectus or preliminary prospectus or 
any omission to state therein a material fact required to be stated therein 
or necessary to make the statements therein not misleading, to the extent, 
but only to the extent, that such untrue statement or omission is contained 
in any information with respect to such holder so furnished in writing by 
such holder specifically for inclusion in or for use in the preparation of 
any prospectus or registration statement. Each participating Stockholder also 
will, to the extent permitted by applicable law, indemnify and hold harmless 
the underwriters of the shares of Registrable Common on substantially the 
same basis on which Pentegra will indemnify and hold harmless those persons 
pursuant to SECTION 8(a).

    (c)  CONDUCT OF INDEMNIFICATION PROCEEDINGS.  Any person entitled to 
indemnification hereunder agrees to give prompt written notice to the 
indemnifying party after the receipt by such person of any written notice of 
the commencement of any action, suit, proceeding or investigation or threat 
thereof made in writing for which such person will claim indemnification or 
contribution pursuant to this Agreement; provided, however, that the failure 
to notify the indemnifying party shall not relieve it from its 
indemnification obligations to the indemnified party under this Agreement 
unless the resulting delay is materially prejudicial to the defense of such 
claim; provided, further, that the failure to deliver any such notice shall 
not relieve an indemnifying party of any liability or obligation that it may 
have to an indemnified party otherwise than pursuant to this SECTION 8.  
Unless in the reasonable judgment of such indemnified party (i) a conflict of 
interest may exist between such indemnified party and the indemnifying party 
with respect to such claim or (ii) the named parties to any such action, 
suit, proceeding or investigation (including any impleaded parties) include 
both an indemnifying party and an indemnified party, and such indemnified 
party shall have been advised by counsel that there may be one or more legal 
defenses available to it which are different from or additional to those 
available to the indemnifying party, the indemnified party shall permit the 
indemnifying party to assume the defense of such claim with counsel 
reasonably satisfactory to such indemnified party.  Whether or not such 
defense is assumed by the indemnifying party, the indemnifying party will not 
be subject to any liability for any settlement made without its consent (but 
such consent will not be unreasonably withheld).  No indemnifying party will 
consent to entry of any judgment or enter into any settlement which does not 
include as an unconditional term thereof the giving by the claimant or 
plaintiff to the indemnified party of a release from all liability in respect 
of such claim or litigation.  If the indemnifying party is not entitled to, 
or elects not to, assume the defense of a claim, it will not be obligated to 
pay the fees and expenses of more than one 

<PAGE>

counsel with respect to such claim; provided, however, that an indemnified 
party shall have the right to retain its own counsel, with the reasonable 
fees and expenses of such counsel to be paid by the indemnifying party, if 
the indemnified party, based on the advice of counsel, reasonably believes 
that representation of such indemnified party by the counsel retained by the 
indemnifying party would be inappropriate due to actual or potential 
differing interests between such indemnified party and any other party 
represented by such counsel in such proceeding.

    (d)  CONTRIBUTION.  If the indemnification provided for in this SECTION 8 
from the indemnifying party is unavailable to an indemnified party hereunder 
in respect of any losses, claims, damages, liabilities or expenses referred 
to therein, then the indemnifying party, in lieu of indemnifying such 
indemnified party, shall contribute to the amount paid or payable by such 
indemnified party as a result of such losses, claims, damages, liabilities or 
expenses in such proportion as is appropriate to reflect the relative fault 
of the indemnifying party and indemnified parties in connection with the 
actions which resulted in such losses, claims, damages, liabilities or 
expenses, as well as any other relevant equitable considerations.  The 
relative fault of such indemnifying party and indemnified parties shall be 
determined by reference to, among other things, whether any untrue statement 
(or alleged untrue statement) of a material fact or omission (or alleged 
omission) to state a material fact has been made by, or relates to 
information supplied by, such indemnifying party or indemnified parties, and 
the parties' relative intent, knowledge, access to information and 
opportunity to correct or prevent such action.  The amount paid or payable by 
a party as a result of the losses, claims, damages, liabilities and expenses 
referred to above shall be deemed to include, subject to the limitations set 
forth in SECTION 8(c), any legal or other fees or expenses reasonably 
incurred by such party in connection with any investigation or proceeding.

    The parties hereto agree that it would not be just and equitable if 
contribution pursuant to this SECTION 8(d) were determined by pro rata 
allocation or by any other method of allocation which does not take account 
of the equitable considerations referred to in the immediately preceding 
paragraph. Notwithstanding the provisions of this SECTION 8(d), no 
underwriter shall be required to contribute any amount in excess of the 
amount by which the total price at which the Registrable Common underwritten 
by it and distributed to the public exceeds the amount of any damages which 
such underwriter has otherwise been required to pay by reason of such untrue 
or alleged untrue statement or omission or alleged omission, and no selling 
holder shall be required to contribute any amount in excess of the amount by 
which the total price at which shares of the Registrable Common of such 
selling holder were offered to the public exceeds the amount of any damages 
which such selling holder has otherwise been required to pay by reason of 
such untrue statement or omission.  No person guilty of fraudulent 
misrepresentation (within the meaning of Section 11(f) of the Securities Act) 
shall be entitled to contribution from any person who was not guilty of such 
fraudulent misrepresentation.

    If indemnification is available under this SECTION 8, the indemnifying 
parties shall indemnify each indemnified party to the full extent provided in 
SECTION 8(a) AND (b) without regard to the relative fault of said 
indemnifying party or indemnified party or any other equitable consideration 
provided for in this SECTION 8(d).  The provisions of this SECTION 8 shall 
survive the termination of any or all of the other provisions of this 
Agreement.

<PAGE>

9.  PARTICIPATION IN UNDERWRITTEN REGISTRATIONS.  No holder of Registrable 
Common may participate in any underwritten registration hereunder unless such 
holder (a) agrees to sell such holder's securities on the basis provided in 
any underwriting arrangements approved by the persons entitled hereunder to 
approve such arrangements and (b) completes and executes all questionnaires, 
powers of attorney, indemnities, underwriting agreements and other documents 
reasonably required under the terms of such underwriting arrangements.

10. TRANSFER OF REGISTRATION RIGHTS; ADDITIONAL GRANTS OF REGISTRATION 
RIGHTS. The registration rights provided to the holders of Registrable Common 
under SECTION 1 hereof may not be transferred to any other person or entity 
except pursuant to the laws of descent and distribution and to immediate 
family members of a Stockholder; provided that such transferees shall be 
bound by and subject to the terms and conditions contained herein.  Pentegra 
may, without the prior written consent of any Stockholder, extend the 
registration rights provided in this Agreement to additional persons or 
entities who become holders of Pentegra Common Stock subsequent to the date 
of this Agreement by entering into similar agreement (or an addendum to this 
Agreement) with such stockholders.  Nothing herein shall limit the ability of 
Pentegra to grant to any person or entity any registration or similar rights 
in the future with respect to Pentegra Common Stock or other securities of 
Pentegra (whether pursuant to the foregoing or otherwise).

11. MISCELLANEOUS.

    (a)  AMENDMENTS AND WAIVERS.  Except as otherwise provided herein, the 
provisions of this Agreement may not be amended, modified or supplemented, 
and waivers or consents to departures from the provisions hereof may not be 
given unless Pentegra has obtained the written consent of holders of at least 
50.1% of the shares of Registrable Common then outstanding and affected by 
such amendment, modification, supplement, waiver or departure.

    (b)  NOTICES.  All notices and other communications provided for or 
permitted hereunder shall be in writing and shall be deemed to have been duly 
given if delivered personally or sent by telex or telecopies, registered or 
certified mail (return receipt requested), postage prepaid, or courier to the 
parties at the following addresses (or at such other address for any party as 
shall be specified by like notice, provided that notices of a change of 
address shall be effective only upon receipt thereof).  Notices sent by mail 
shall be effective when answered back, notices sent by telecopier shall be 
effective when receipt is acknowledged, and notices sent by courier 
guaranteeing next day delivery shall be effective on the next business day 
after timely delivery to the courier.  Notices shall be sent to the following 
addresses:

         (i)  to a Stockholder, at the most current address given by such
              holder to Pentegra in writing;

         (ii) if to Pentegra, at its address set forth on the signature page
              hereof.

    (c)  SUCCESSORS AND ASSIGNS.  This Agreement shall inure to the benefit 
of and be binding upon the successors and assigns of each of the parties.

<PAGE>

    (d)  COUNTERPARTS.  This Agreement may be executed in any number of 
counterparts and by the parties hereto in separate counterparts, each of 
which when so executed shall be deemed to be an original and all of which 
taken together shall constitute one and the same agreement.

    (e)  HEADINGS AND REFERENCES.  The headings in this Agreement are for 
convenience of reference only and shall not limit or otherwise affect the 
meaning hereof.  References herein to "Sections" are to Sections of this 
Agreement unless otherwise indicated.

    (f)  GOVERNING LAW.  THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN 
ACCORDANCE WITH THE LAWS OF THE STATE OF ARIZONA  APPLICABLE TO CONTRACTS 
MADE AND TO BE PERFORMED WHOLLY WITHIN THAT STATE.

    (g)  SEVERABILITY.  In the event that any one or more of the provisions 
contained herein, or the application thereof in any circumstances, is held 
invalid, illegal or unenforceable in any respect for any reason, the 
validity, legality and enforceability of any such provision in every other 
respect and of the remaining provisions contained herein shall not be in any 
way impaired thereby, it being intended that all of the rights and privileges 
of the Stockholder shall be enforceable to the fullest extent permitted by 
law.

    (h)  ENTIRE AGREEMENT.  This Agreement is intended by the parties as a 
final expression of their agreement and intended to be a complete and 
exclusive statement of the agreement and understanding of the parties hereto 
in respect of the subject matter contained herein and therein.  This 
Agreement supersedes all prior agreements and understandings between the 
parties with respect to such subject matter.

    EXECUTED as of the date first above written.

                             PENTEGRA:

                             PENTEGRA DENTAL GROUP, INC. 



                             By: /s/ Gary S. Glatter
                                ---------------------------------------------

                             Its: President
                                 --------------------------------------------


                             2999 N. 44th Street, Suite 650
                             Phoenix, Arizona 85018
                             (602) 952-7363
                             (602) 952-0544 fax


                             STOCKHOLDERS:

<PAGE>

                                                                   EXHIBIT 10.1


                        PENTEGRA DENTAL GROUP, INC. 


                        1997 STOCK COMPENSATION PLAN




<PAGE>
                                       
           PENTEGRA DENTAL GROUP, INC. 1997 STOCK COMPENSATION PLAN
                                       

                                   ARTICLE I
                                   THE PLAN

    1.1  NAME.  This Plan shall be known as the "Pentegra Dental Group, Inc. 
1997 Stock Compensation Plan."  Capitalized terms used herein are defined in 
ARTICLE VIII hereof.

    1.2  PURPOSE.  The purpose of the Plan is to promote the growth and 
general prosperity of the Company by permitting the Company to grant to 
Employees, Outside Directors, Advisors, Practice Employees and Practice 
Employee Directors Common Stock of the Company and Options to purchase Common 
Stock of the Company. The Plan is designed to help the Company and its 
Subsidiaries attract and retain superior personnel for positions of 
substantial responsibility and to provide Employees, Outside Directors, 
Advisors, Practice Employees and Practice Employee Directors with an 
additional incentive to contribute to the success of the Company.  The 
Company intends that Incentive Stock Options granted pursuant to ARTICLE III 
shall qualify as "incentive stock options" within the meaning of Section 422 
of the Code. 

    1.3  EFFECTIVE DATE.  The Plan shall become effective upon the Effective 
Date.

    1.4  ELIGIBILITY TO PARTICIPATE.  Any Employee, Outside Director, 
Advisor, Practice Employee or Practice Employee Director shall be eligible to 
participate in the Plan.  Subject to the following provisions, including 
without limitation SECTION 4.5, the Committee may grant Options or Restricted 
Stock in accordance with such determinations as the Committee from time to 
time in its sole discretion shall make; provided, however, that Incentive 
Stock Options may be granted only to persons who are Employees.  No grants 
made under this Plan shall be effective until the effective date of the 
initial public offering of the Company. 

    1.5  SHARES SUBJECT TO THE PLAN.  The shares of Common Stock to be issued 
pursuant to the Plan shall be either authorized and unissued shares of Common 
Stock or shares of Common Stock issued and thereafter acquired by the Company.

    1.6  MAXIMUM NUMBER OF PLAN SHARES.  Subject to adjustment pursuant to 
the provisions of SECTION 6.2, and subject to any additional restrictions 
elsewhere in the Plan, the maximum aggregate number of shares of Common Stock 
that may be issued and sold hereunder shall not exceed 2,000,000 shares.   No 
more than 1,000,000 shares of Common Stock shall be available for Incentive 
Stock Options. Subject to adjustment pursuant to the provisions of SECTION 
6.2, and subject to any additional restrictions elsewhere in the Plan, the 
maximum aggregate number of shares of Common Stock with respect to which 
Options may be granted to any Optionee during the term of the Plan shall not 
exceed 1,000,000 shares.

                                       1
<PAGE>

    1.7  OPTIONS AND STOCK GRANTED UNDER PLAN.  Plan Shares with respect to 
which an Option shall have been exercised or a Restricted Stock Award shall 
have vested shall not again be available for grant hereunder.  If an Option 
terminates for any reason without being wholly exercised or Restricted Stock 
is forfeited, new Options or Restricted Stock may be granted hereunder 
covering the number of Plan Shares to which such Option termination or 
forfeiture relates.

    1.8  CONDITIONS PRECEDENT.  The Company shall not issue any certificate 
for Plan Shares pursuant to the Plan prior to fulfillment of all of the 
following conditions:

         (a)  The admission of the Plan Shares to listing on all stock
    exchanges on which the Common Stock is then listed, unless the Board or
    Committee determines in its sole discretion that such listing is neither
    necessary nor advisable;

         (b)  The completion of any registration or other qualification of the
    offer or sale of the Plan Shares under any federal or state law or under
    the rulings or regulations of the Securities and Exchange Commission or any
    other governmental regulatory body that the Board or Committee shall in its
    sole discretion deem necessary or advisable; and

         (c)  The obtaining of any approval or other clearance from any federal
    or state governmental agency that the Committee shall in its sole
    discretion determine to be necessary or advisable.

    1.9  RESERVATION OF SHARES OF COMMON STOCK.  During the term of the Plan, 
the Company shall at all times reserve and keep available such number of 
shares of Common Stock as shall be necessary to satisfy the requirements of 
the Plan as to the number of Plan Shares.  In addition, the Company shall 
from time to time, as is necessary to accomplish the purposes of the Plan, 
seek or obtain from any regulatory agency having jurisdiction any requisite 
authority that is necessary to issue Plan Shares hereunder.  The inability of 
the Company to obtain from any regulatory agency having jurisdiction the 
authority deemed by the Company's counsel to be necessary to the lawful 
issuance of any Plan Shares shall relieve the Company of any liability in 
respect of the nonissuance of Plan Shares as to which the requisite authority 
shall not have been obtained.

    1.10 TAX WITHHOLDING.

         (a)  CONDITION PRECEDENT.  The issuance of Plan Shares pursuant to the
    exercise of any Option under the Plan or the receipt or vesting of
    Restricted Stock is subject to the condition that if at any time the
    Committee shall determine, in its discretion, that the satisfaction of
    withholding tax or other withholding liabilities under any federal, state
    or local law is necessary or desirable as a condition of, or in connection
    with, such issuances, then the issuances shall not be effective unless the
    withholding shall have been effected or obtained in a manner acceptable to
    the Committee.

                                       2
<PAGE>

         (b)  MANNER OF SATISFYING WITHHOLDING OBLIGATION.   When a Participant
    is required by the Committee to pay to the Company an amount required to be
    withheld under applicable income tax laws in connection with the exercise
    of an Option or the receipt or vesting of Restricted Stock, such payment
    may be made (i) in cash, (ii) by check, (iii) if permitted by the
    Committee, by delivery to the Company of shares of Common Stock already
    owned by the Participant having a Fair Market Value on the Tax Date equal
    to the amount required to be withheld, (iv) through the withholding by the
    Company ("Company Withholding") of a portion of the Plan Shares acquired
    upon the exercise of the Options (if applicable) having a Fair Market Value
    on the Tax Date equal to the amount required to be withheld or (v) in any
    other form of valid consideration, as permitted by the Committee in its
    discretion.

         (c)  NOTICE OF DISPOSITION OF STOCK ACQUIRED PURSUANT TO INCENTIVE
    STOCK OPTIONS.  The Company may require as a condition to the issuance of
    Plan Shares covered by any Incentive Stock Option that the party exercising
    such Option give a written representation to the Company, which is
    satisfactory in form and substance to its counsel and upon which the
    Company may reasonably rely, that he shall report to the Company any
    disposition of such shares prior to the expiration of the holding periods
    specified by Section 422(a)(1) of the Code. If and to the extent that the
    realization of income in such a disposition imposes upon the Company
    federal, state or local withholding tax requirements, or any such
    withholding is required to secure for the Company an otherwise available
    tax deduction, the Company shall have the right to require that the
    recipient remit to the Company an amount sufficient to satisfy those
    requirements; and the Company may require as a condition to the issuance of
    Plan Shares covered by an Incentive Stock Option that the party exercising
    such Option give a satisfactory written representation promising to make
    such a remittance.
    
    1.11 EXERCISE OF OPTIONS.

         (a)  METHOD OF EXERCISE.  Each Option shall be exercisable in
    accordance with the terms of the Option Agreement pursuant to which the
    Option was granted.  No Option may be exercised for a fraction of a Plan
    Share.

         (b)  PAYMENT OF PURCHASE PRICE.  The purchase price of any Plan Shares
    purchased shall be paid at the time of exercise of the Option either (i) in
    cash, (ii) by certified or cashier's check, (iii) if permitted by the
    Committee, by shares of Common Stock, (iv) if permitted by the Committee,
    by cash or certified or cashier's check for the par value of the Plan
    Shares plus a promissory note for the balance of the purchase price, which
    note shall provide for full personal liability of the maker and shall
    contain such terms and provisions as the Committee may determine, including
    without limitation the right to repay the note partially or wholly with
    Common Stock, (v) by delivery of a copy of irrevocable instructions from
    the Optionee to a broker or dealer, reasonably acceptable to the Company,
    to sell certain of the Plan Shares purchased upon exercise of the Option 

                                       3
<PAGE>

    or to pledge them as collateral for a loan and promptly deliver to the 
    Company the amount of sale or loan proceeds necessary to pay such purchase
    price or (vi) in any other form of valid consideration, as permitted by the
    Committee in its discretion.  If any portion of the purchase price or a
    note given at the time of exercise is paid in shares of Common Stock, those
    shares shall be valued at the then Fair Market Value.

    1.12 ACCELERATION IN CERTAIN EVENTS.   The Committee may accelerate the 
exercisability of any Option in whole or in part at any time.  
Notwithstanding the provisions of any Option Agreement, the following 
provisions shall apply:

         (a)  MERGERS, CONSOLIDATION, ETC.  If the Company or its stockholders
    enter into an agreement to dispose of all or substantially all of the
    assets of the Company by means of a sale, merger or other reorganization,
    liquidation or otherwise in a transaction in which the Company is not the
    surviving entity or in which the Company is the surviving entity but
    stockholders of the Company own less than 40% of the total combined voting
    power of all of the classes entitled to vote of the surviving entity
    immediately after the transaction, all Options shall become fully vested
    and immediately exercisable with respect to the full number of shares
    subject to such Options during the period commencing as of the date of the
    agreement to dispose of all or substantially all of the assets or stock of
    the Company and ending when the disposition of assets or stock contemplated
    by that agreement is consummated or the Options are otherwise terminated in
    accordance with their provisions or the provisions of this Plan, whichever
    occurs first; provided that no Option will be immediately exercisable under
    this Section on account of any agreement of merger, sale of assets or other
    reorganization when the stockholders of the Company immediately before the
    consummation of the transaction will own at least 40% of the total combined
    voting power of all the classes of the stock entitled to vote of the
    surviving entity immediately after the consummation of the transaction.  
 
         (b)  CHANGE IN CONTROL.   Anything contained herein to the contrary
    notwithstanding, (1) an Optionee shall become fully vested and immediately
    exercisable in each of his or her Options upon the occurrence of a change
    in control (as defined below) or a threatened change in control (as
    determined by the Committee in its sole discretion); and (2) no Option held
    by an Optionee at the time a change in control or threatened change in
    control occurs or at any time thereafter shall terminate for any reason
    before the end of the Option's express term.  For purposes of this Section,
    "change in control" means one or more of the following events:

         (i)  Any person within the meaning of Section 13(d) and 14(d) of the
    Exchange Act, other than the Company (including its subsidiaries and
    affiliates), has become the beneficial owner, within the meaning of Rule
    13d-3 under the Exchange Act, of 25% or more of the combined voting power
    of the Company's then outstanding Common Stock or equivalent in voting
    power of any class or classes of the Company's outstanding securities
    ordinarily entitled to vote in elections of directors ("voting
    securities"); or

                                       4
<PAGE>

         (ii) Shares representing 25% or more of the combined voting power of
    the Company's voting securities are purchased pursuant to a tender offer or
    exchange offer (other than an offer by the Company or its subsidiaries or
    affiliates); or

         (iii) A change during any period of two consecutive years of a 
    majority of the members of the Board for any reason, unless the election,
    or the nomination for election by the Company's shareholders, of each
    director was approved by a vote of a majority of the directors then still
    in office who were directors at the beginning of the period; provided that
    a change in control will not be deemed to have occurred for purposes hereof
    with respect to any person meeting the requirements of clauses (i) and (ii)
    of Rule 13d-1(b)(1) promulgated under the Exchange Act.

         (iv) The Company transfers more than 50% of its assets, or the last of
    a series of transfers results in the transfer of more than 50% of the
    assets of the Company, to another entity that is not wholly-owned by the
    Company.  For purposes of this subsection (v), the determination of what
    constitutes 50% of the assets of the Company shall be made by the
    Committee, as constituted immediately prior to the events that would
    constitute a change of control if 50% of the Company's assets were
    transferred in connection with such events, in its sole discretion.

    1.13 WRITTEN NOTICE REQUIRED.  Any Option shall be deemed to be exercised 
for purposes of the Plan when written notice of exercise has been received by 
the Company at its principal office from the person entitled to exercise the 
Option and payment for the Plan Shares with respect to which the Option is 
exercised has been received by the Company in accordance with SECTION 1.11.

    1.14 COMPLIANCE WITH SECURITIES LAWS.  Plan Shares shall not be issued 
with respect to any Option or any Restricted Stock Award unless the issuance 
and delivery of the Plan Shares (and the exercise of an Option, if 
applicable) shall comply with all relevant provisions of state and federal 
law (including without limitation (i) the Securities Act and the rules and 
regulations promulgated thereunder, and (ii) the requirements of any stock 
exchange upon which the Plan Shares may then be listed) and shall be further 
subject to the approval of counsel for the Company with respect to such 
compliance.  The Committee  may also require a Participant to furnish 
evidence satisfactory to the Company, including without limitation a written 
and signed representation letter and consent to be bound by any transfer 
restrictions imposed by law, legend, condition, or otherwise, that the Plan 
Shares are being acquired only for investment and without any present 
intention to sell or distribute the shares in violation of any state or 
federal law, rule, or regulation.  Further, each Participant shall consent to 
the imposition of a legend on the certificate representing the Plan Shares 
issued pursuant to the exercise of an Option or a Restricted Stock Award 
restricting their transfer as required by law or this Section.

    1.15 EMPLOYMENT OR SERVICE OF OPTIONEE.  Nothing in the Plan or in any 
Award granted hereunder shall confer upon any Employee or Practice Employee 
any right to continued 

                                       5
<PAGE>

employment by the Company or any of its Subsidiaries or by any Practice, as 
applicable or limit in any way the right of the Company or any Subsidiary or 
any Practice at any time to terminate or alter the terms of that employment.  
Nothing in the Plan or in any Award granted hereunder shall confer upon any 
Outside Director or Advisor or Practice Employee Director any right to 
continued service as an Outside Director or Advisor or Practice Employee 
Director of the Company or any of its Subsidiaries or limit in any way the 
right of the Company or any Subsidiary at any time to terminate or alter the 
terms of that service.

    1.16 RIGHTS OF OPTIONEES UPON TERMINATION OF EMPLOYMENT OR SERVICE. The 
Committee shall provide in each Option Agreement for the circumstances under 
which the Option granted hereunder terminates. The Committee shall also 
address in each Option Agreement the exercisability of the Options following 
death, Permanent Disability or Retirement or cessation of employment of an 
Optionee.
 
    1.17 TRANSFERABILITY OF OPTIONS.  Except as may be agreed upon by the 
Committee in accordance with the following paragraph, Options shall not be 
transferable other than by will or the laws of descent and distribution or, 
with respect to Nonqualified Stock Options, pursuant to the terms of a 
qualified domestic relations order as defined by the Code or Title I of 
ERISA, or the rules thereunder, and, with respect to Incentive Stock Options, 
may be exercised during the lifetime of an Optionee only by that Optionee or 
by his legally authorized representative.  The designation by an Optionee of 
a beneficiary shall not constitute a transfer of the Option.  The Committee 
may, in its discretion, provide in an Option Agreement that Nonqualified 
Stock Options granted hereunder may be transferred by the Optionee to members 
of his immediate family, trusts for the benefit of such immediate family 
members and partnerships in which such immediate family members are the only 
partners.

    1.18 INFORMATION TO PARTICIPANTS.  The Company shall furnish to each 
Participant a copy of the annual report, proxy statements, if any, and all 
other reports sent to the Company's shareholders.  Upon written request, the 
Company shall furnish to each Participant a copy of its most recent Form 10-K 
Annual Report and each quarterly report, if any, to shareholders issued since 
the end of the Company's most recent fiscal year.

                                  ARTICLE II
                                ADMINISTRATION
                                       
    2.1  COMMITTEE.  Subject to SECTION 2.2, the Plan shall be administered 
by a Committee of not fewer than two members of the Board.  Each member of 
the Committee shall be a "Non-Employee Director" within the meaning of Rule 
16b-3 under the Exchange Act.  Moreover, in the event any Awards granted 
hereunder are intended to qualify as performance-based compensation under 
Section 162(m) of the Code, all members of the Committee shall be "outside 
directors" within the meaning of Section 162(m) of the Code and the 
regulations thereunder.  Subject to the provisions of the Plan, the Committee 
shall have the sole discretion and authority to determine from time to time 
the Employees, Outside Directors, Advisors, Practice Employees 

                                       6
<PAGE>

and Practice Employee Directors to whom Awards shall be granted and the 
number of Plan Shares subject to each Award, to interpret the Plan, to 
prescribe, amend and rescind any rules and regulations necessary or 
appropriate for the administration of the Plan, to determine and interpret 
the details and provisions of each Award Agreement, to modify or amend any 
Award Agreement or waive any conditions or restrictions applicable to any 
Awards (or the exercise thereof), and to make all other determinations 
necessary or advisable for the administration of the Plan.

    2.2  GRANTS PRIOR TO INITIAL PUBLIC OFFERING.  Notwithstanding the 
provisions of SECTION 2.1, prior to the date of the Company's initial public 
offering of its Common Stock, the Plan shall be administered by the Board and 
the Board shall have all of the powers of the Committee hereunder.

    2.3  APPOINTMENT OF COMMITTEE.  The Committee shall be appointed by the 
Board; provided that the Board may remove any Committee member, with or 
without cause.

    2.4  MAJORITY RULE; UNANIMOUS WRITTEN CONSENT.  A majority of the members 
of the Committee shall constitute a quorum, and any action taken by a 
majority present at a meeting at which a quorum is present or any action 
taken without a meeting evidenced by a writing executed by all members of the 
Committee shall constitute the action of the Committee. Meetings of the 
Committee may take place by telephone conference call.

    2.5  COMPANY ASSISTANCE.  The Company shall supply full and timely 
information to the Committee on all matters relating to Employees, Outside 
Directors, Advisors, Practice Employees and Practice Employee Directors, 
their employment, death, Retirement, Permanent Disability, or other 
termination of employment or other relationship with the Company, and such 
other pertinent facts as the Committee may require.  The Company shall 
furnish the Committee with such clerical and other assistance as is necessary 
in the performance of its duties.

    2.6  EXCULPATION OF COMMITTEE.  No member of the Committee shall be 
personally liable for, and the Company shall indemnify all members of the 
Committee and hold them harmless against, any claims resulting directly or 
indirectly from any action or inaction by the Committee pursuant to the Plan, 
including without limitation any determination by the Committee regarding 
whether a "change in control" (within the meaning of SECTION 1.12) is 
threatened or any failure by the Committee to consider such a determination.

                                 ARTICLE III
                           INCENTIVE STOCK OPTIONS

    3.1  TERMS AND CONDITIONS.  The terms and conditions of Options granted 
under this Article may differ from one another as the Committee shall, in its 
discretion, determine, as long as all Options granted under this Article 
satisfy the requirements of this Article.

                                       7
<PAGE>

    3.2  DURATION OF OPTIONS.  Each Option granted pursuant to this Article and
all rights thereunder shall expire on the date determined by the Committee, but
in no event shall any Option granted under this Article expire earlier than one
year or later than 10 years after the date on which the Option is granted.  In
addition, each Option shall be subject to early termination as provided
elsewhere in the Plan or the Option Agreement.

    3.3  PURCHASE PRICE.  The purchase price for Plan Shares acquired pursuant
to the exercise, in whole or in part, of any Option granted under this Article
shall not be less than the Fair Market Value of the Plan Shares at the time of
the grant of the Option; provided, however, in the event of the grant of any
Option to an individual who, at the time the Option is granted, owns shares of
stock possessing more than 10% of the total combined voting power of all classes
of stock of the Company or any Subsidiary or affiliate thereof within the
meaning of Section 422 of the Code, the purchase price for the Plan Shares
subject to that Option must be at least 110% of the Fair Market Value of those
Plan Shares at the time the Option is granted and the Option must not be
exercisable after the expiration of five years from the date of its grant. 

    3.4  MAXIMUM AMOUNT OF OPTIONS FIRST EXERCISABLE IN ANY CALENDAR YEAR.  The
aggregate Fair Market Value of Plan Shares (determined at the time the Option is
granted) with respect to which Options issued under this Article are exercisable
for the first time by any Employee during any calendar year under all incentive
stock option plans of the Company and its Subsidiaries and affiliates shall not
exceed $100,000.  Any portion of an Option granted under the Plan in excess of
the foregoing limit shall be considered granted pursuant to ARTICLE IV.

    3.5  INDIVIDUAL OPTION AGREEMENTS.  Each Employee receiving Options
pursuant to this Article shall be required to enter into a written Option
Agreement with the Company.  In such Option Agreement, the Employee shall agree
to be bound by the terms and conditions of the Plan, the Options made pursuant
hereto, and such other matters as the Committee deems appropriate.


                                      ARTICLE IV
                              NONQUALIFIED STOCK OPTIONS

    4.1  OPTION TERMS AND CONDITIONS.  Subject to SECTION 4.5, the terms and
conditions of Options granted under this Article may differ from one another as
the Committee shall, in its discretion, determine as long as all Options granted
under this Article satisfy the requirements of this Article.

    4.2  DURATION OF OPTIONS.  Each Option granted pursuant to this Article and
all rights thereunder shall expire on the date determined by the Committee.  In
addition, each Option shall be subject to early termination as provided
elsewhere in the Plan.

                                      8 
<PAGE>

    4.3  PURCHASE PRICE.  The purchase price for the Plan Shares acquired
pursuant to the exercise, in whole or in part, of any Option granted under this
Article shall not be less than the Fair Market Value of the Plan Shares at the
time of the grant of the Option.

    4.4  INDIVIDUAL OPTION AGREEMENTS.  Each Optionee receiving Options
pursuant to this Article shall be required to enter into a written Option
Agreement with the Company.  In such Option Agreement, the Optionee shall agree
to be bound by the terms and conditions of the Plan, the Options made pursuant
hereto, and such other matters as the Committee deems appropriate.

    4.5  AUTOMATIC GRANTS TO OUTSIDE DIRECTORS AND PRACTICE EMPLOYEE DIRECTORS. 
Each Outside Director shall automatically be granted a Nonqualified Stock Option
to purchase 10,000 shares of Common Stock either on later of (i) upon initial
election or appointment to the Board or (ii) if the Outside Director is serving
on the Board on the date the Plan is approved by the Company's stockholders, on
the date the Plan is so approved.  Each Outside Director and each Practice
Employee Director will receive a Nonqualified Stock Option to purchase 5,000
shares of Common Stock on the date of each annual meeting of stockholders of the
Company subsequent to his initial election as a director.  The purchase price
for Plan Shares acquired pursuant to the exercise, in whole or in part, of any
Option received by Outside Directors or Practice Employee Directors shall be the
Fair Market Value of the Plan Shares on the date of grant of such Option.  One
half of each Option shall become exercisable on the first anniversary of the
date of grant of such Option and the remaining one half of each Option shall
become exercisable on the second anniversary of the date of grant.  Each Option
shall expire on the day prior to the tenth anniversary of the date of grant of
such Option, unless otherwise specified herein.  


                                      ARTICLE V
                                  RESTRICTED STOCK 

    5.1  GRANT OF RESTRICTED STOCK AWARDS.  The Committee may, in its sole
discretion, grant Restricted Stock Awards in accordance with the terms and
conditions set forth in the Plan.  Each Restricted Stock Agreement may contain
such additional terms and conditions, not inconsistent with the terms of the
Plan, as are determined by the Committee in its sole discretion.

    5.2. TERMS AND CONDITIONS.  Each Restricted Stock Award confers upon the
recipient thereof the right to receive a specified number of shares of Common
Stock in accordance with the terms and conditions of each Participant's
Restricted Stock Agreement.  The general terms and conditions of a Restricted
Stock Award will be as follows:

         (a)  Any shares of Common Stock awarded hereunder to a
    Participant will be restricted for a period of time to be determined
    by the Committee for each Participant at the time of the Award, which
    period shall be not more than ten years.  The restrictions will
    prohibit the sale, assignment, transfer, pledge or other 

                                      9 
<PAGE>

    encumbrance of such shares, and will provide for possible reversion thereof
    to the Company in accordance with subparagraph (b) during the period of
    restriction.

         (b)  All Restricted Stock awarded under the Plan to a Participant
    will be forfeited and returned to the Company in the event the
    Participant's employment or service with the Company or a subsidiary
    thereof is terminated prior to the expiration of the period of
    restriction, unless the Participant's termination of employment or
    service is due to his death, Permanent Disability or Retirement or
    unless the Committee, in its sole discretion, waives the restrictions
    established in accordance with subparagraph (a) with respect to any or
    all of the shares of Restricted Stock.

         (c)  In the event of a Participant's death or Permanent
    Disability, the restrictions established in accordance with
    subparagraph (a) will lapse with respect to all Restricted Stock
    awarded to the Participant prior to any such event, and the shares of
    Common Stock involved will cease to be Restricted Stock and will no
    longer be subject to forfeiture to the Company pursuant to
    subparagraph (b).

         (d)  In the event of a Participant's Retirement, the restrictions
    established in accordance with subparagraph (a) will continue to apply
    unless the Committee in its sole discretion shortens the restriction
    period.

         (e)  Stock certificates issued with respect to Restricted Stock
    Awards will be registered in the name of the Participant, but will be
    delivered by him to the Company together with a stock power endorsed
    in blank.  Each such certificate will bear the following legend:

              "THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT
              TO FORFEITURE, RESTRICTIONS ON TRANSFER AND CERTAIN
              OTHER TERMS AND CONDITIONS SET FORTH IN THE PENTEGRA
              DENTAL GROUP, INC. 1997 STOCK COMPENSATION PLAN AND THE
              AGREEMENT BETWEEN THE REGISTERED OWNER OF THE SHARES
              REPRESENTED BY THIS CERTIFICATE AND PENTEGRA DENTAL
              GROUP, INC. ENTERED INTO PURSUANT TO SUCH PLAN."

         From the time of grant of the Restricted Stock Award, the
    Participant will be entitled to exercise all rights (including
    dividend and voting rights) with respect to the shares represented by
    such certificate, subject to forfeiture of such voting rights and the
    Common Stock as provided in subparagraph (b).

                                      10 
<PAGE>

         (f)  Upon the lapse of a restriction period as determined
    pursuant to subparagraph (a), the Company will return the stock
    certificates representing the shares with respect to which the
    restriction has lapsed to the Participant or his legal representative,
    and pursuant to the instruction of the Participant or his legal
    representative will issue a certificate for such shares that does not
    bear the legend set forth in subparagraph (e).

         (g)  Any other securities or assets (other than ordinary cash
    dividends) that are received by a Participant with respect to
    Restricted Stock awarded to him, which is still subject to
    restrictions established in accordance with subparagraph (a), will be
    subject to the same restrictions and will be delivered by the
    Participant to the Company as provided in subparagraph (e).

    5.3. NOTICE TO COMPANY OF SECTION 83(b) ELECTION.  Any Participant who
exercises an election under Section 83(b) of the Code to have his receipt of
shares of Restricted Stock taxed currently, without regard to restrictions, must
give notice to the Company of such election immediately upon making such
election.  Such an election must be made within 30 days after the effective date
of issuance and cannot be revoked except with the consent of the Internal
Revenue Service.


                                      ARTICLE VI
                        TERMINATION, AMENDMENT, AND ADJUSTMENT

    6.1  TERMINATION AND AMENDMENT.  The Plan shall terminate on July 1, 2007. 
No Award shall be granted under the Plan after that date of termination. 
Subject to the limitations contained in this Section, the Committee may at any
time amend or revise the terms of the Plan, including the form and substance of
the Award Agreements to be used in connection herewith; provided that no
amendment or revision may (i) increase the maximum aggregate number of Plan
Shares, except as permitted under SECTION 6.2, (ii) change the minimum purchase
price for shares under ARTICLE III, or (iii) permit the granting of an Option or
Restricted Stock Award to anyone other than as provided in the Plan.  No 
amendment, suspension, or termination of the Plan shall, without the consent of
the individual who has received an Award hereunder, adversely alter or impair
any of that individual's rights or obligations under any Award granted under the
Plan prior to that amendment, suspension, or termination.

    6.2  ADJUSTMENTS.  If the outstanding Common Stock is increased, decreased,
changed into, or exchanged for a different number or kind of shares or
securities through merger, consolidation, combination, exchange of shares, other
reorganization, recapitalization, reclassification, stock dividend, stock split,
or reverse stock split, an appropriate and proportionate adjustment shall be
made in the maximum number and kind of Plan Shares as to which Awards may be
granted under the Plan.  A corresponding adjustment changing the number or kind
of shares allocated to unexercised Options or portions thereof and outstanding
Restricted 

                                      11 
<PAGE>

Stock Awards, which shall have been granted prior to any such change, shall 
likewise be made.  Any such adjustment in outstanding Options shall be made 
without change in the aggregate purchase price applicable to the unexercised 
portion of the Options, but with a corresponding adjustment in the price for 
each share covered by the Options.  The foregoing adjustments and the manner 
of application of the foregoing provisions shall be determined solely by the 
Committee, and any such adjustment may provide for the elimination of 
fractional share interests.

                                     ARTICLE VII
                                    MISCELLANEOUS

    7.1  OTHER COMPENSATION PLANS.  The adoption of the Plan shall not affect
any other stock option or incentive or other compensation plans in effect for
the Company or any Subsidiary or affiliate of the Company, nor shall the Plan
preclude the Company or any Subsidiary or affiliate thereof from establishing
any other forms of incentive or other compensation plans.

    7.2  PLAN BINDING ON SUCCESSORS.  The Plan shall be binding upon the
successors and assigns of the Company and any Subsidiary or affiliate of the
Company that adopts the Plan.

    7.3  NUMBER AND GENDER.  Whenever used herein, nouns in the singular shall
include the plural where appropriate, and the masculine pronoun shall include
the feminine gender.

    7.4  HEADINGS.  Headings of articles and sections hereof are inserted for
convenience of reference and constitute no part of the Plan.


                                     ARTICLE VIII
                                     DEFINITIONS

    As used herein with initial capital letters, the following terms have the
meanings hereinafter set forth unless the context clearly indicates to the
contrary:

    8.1  "ADVISOR" means any individual performing substantial BONA FIDE
services for the Company or any Subsidiary of the Company that has adopted the
Plan who is not an Employee, a Director or a Practice Employee.

    8.2  "AWARD" means a grant of Options under ARTICLE III or IV of the Plan
or a Restricted Stock Award under ARTICLE V of the Plan.

    8.3  "AWARD AGREEMENT" means an Option Agreement or a Restricted Stock
Agreement.

    8.4  "BOARD" means the Board of Directors of the Company.

                                      12 
<PAGE>

    8.5  "CAUSE" means conviction of a crime involving moral turpitude or a
crime providing for a term of imprisonment in a federal or state penitentiary;
failure or refusal to follow reasonable instructions of the Board; failure or
refusal to comply with the reasonable policies, standards and regulations of the
Company, which from time to time may be established; failure or refusal to
faithfully and diligently perform the usual customary duties of his employment
or service; acting in an unprofessional, unethical, immoral or fraudulent
manner; acting in a manner which discredits or is detrimental to the reputation,
character and standing of Company or a Subsidiary; or the commission of any
other act that causes or reasonably may be expected to cause substantial injury
to the Company.

    8.6  "CODE" means the Internal Revenue Code of 1986, as amended.

    8.7  "COMMITTEE" means the Committee appointed in accordance with SECTION
2.2.

    8.8  "COMMON STOCK" means the Common Stock, par value $0.01 per share, of
the Company or, in the event that the outstanding shares of such Common Stock
are hereafter changed into or exchanged for shares of a different stock or
security of the Company or some other corporation, such other stock or security.

    8.9  "COMPANY" means Pentegra Dental Group, Inc., a Delaware corporation.

    8.10 "DIRECTOR" means a member of the Board.

    8.11 "EFFECTIVE DATE" means August 1, 1997 

    8.12 "EMPLOYEE" means an employee (as defined in Section 3401(c) of the
Code and the regulations thereunder) of the Company or of any Subsidiary of the
Company that adopts the Plan, including Officers.  

    8.13 "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended.

    8.14 "EXCHANGE ACT" means the Securities Exchange Act of 1934, as amended.

    8.15 "FAIR MARKET VALUE" means such value as determined by the Committee on
the basis of such factors as it deems appropriate; provided that if the Common
Stock is traded on a national securities exchange or transactions in the Common
Stock are quoted on the Nasdaq National Market System, such value as shall be
determined by the Committee on the basis of the reported sales prices for the
Common Stock on the date for which such determination is relevant, as reported
on the national securities exchange or the Nasdaq National Market System, as the
case may be.  If the Common Stock is not listed and traded upon a recognized
securities exchange or on the Nasdaq National Market System, the Committee shall
make a determination of Fair Market Value on a reasonable basis, which may
include the mean between the closing bid and asked 

                                      13 
<PAGE>

quotations for such stock on the date for which such determination is 
relevant (as reported by a recognized stock quotation service) or, in the 
event that there shall be no bid or asked quotations on the date for which 
such determination is relevant, then on the basis of the mean between the 
closing bid and asked quotations on the date nearest preceding the date for 
which such determination is relevant for which such bid and asked quotations 
were available.

    8.16 "INCENTIVE STOCK OPTION" means an Option granted pursuant to ARTICLE
III.

    8.17 "NONQUALIFIED STOCK OPTION" means an Option granted pursuant to
ARTICLE IV.

    8.18 "OFFICER" means an officer of the Company or any Subsidiary of the
Company.

    8.19 "OPTION" means an Incentive Stock Option or a Nonqualified Stock
Option.

    8.20 "OPTIONEE" means an Employee, Outside Director, Advisor, Practice
Employee or Practice Employee Director to whom an Option has been granted
hereunder.

    8.21 "OPTION AGREEMENT" means an agreement between the Company and an
Optionee with respect to one or more Options.

    8.22 "OUTSIDE DIRECTOR" means a member of the Board who is not an Officer
or Employee of the Company and who is not a Practice Employee.

    8.23 "PARTICIPANT" means a person to whom an Award has been granted.

    8.24 "PERMANENT DISABILITY" has the same meaning as that provided in
Section 22(e)(3) of the Code.

    8.25 "PLAN" means the Pentegra Dental Group, Inc. 1997 Stock Compensation
Plan, as amended from time to time. 

    8.26 "PLAN SHARES" means shares of Common Stock issuable pursuant to the
Plan.

    8.27 "PRACTICE" means a professional corporation, association, limited
liability company, sole proprietorship, partnership or other entity that has a
practice management contract with the Company or a Subsidiary. 

    8.28 "PRACTICE EMPLOYEES" means employees of any Practice, including
without limitation, dentists employed by a Practice.


    8.29 "PRACTICE EMPLOYEE DIRECTOR" means a member of the Board who is an
officer or Employee of a Practice. 

                                      14 
<PAGE>

    8.30 "RESTRICTED STOCK" or "RESTRICTED STOCK AWARD" means an award of
Common Stock granted under ARTICLE V. 

    8.31 "RESTRICTED STOCK AGREEMENT" means a written agreement between the
Company and a Participant with respect to a Restricted Stock Award.

    8.32 "RETIREMENT" occurs when an Employee or Director or Practice Employee
terminates his relationship with the Company or a Subsidiary or a Practice on or
after the date he (a) turns 65 years old or (b) turns 55 years old and has
completed 10 years of service with the Company or a Subsidiary as otherwise
determined by the Board.

    8.33 "RULE 16b-3" means Rule 16b-3 promulgated under the Exchange Act or
any successor rule.

    8.34 "SECURITIES ACT" means the Securities Act of 1933, as amended.

    8.35 "SUBSIDIARY" means a subsidiary corporation of the Company, as defined
in Section 424(f) of the Code.

    8.36 "TAX DATE" means the date on which the amount of tax to be withheld is
determined.


















                                      15 

<PAGE>

                                                                   EXHIBIT 10.2



                                 EMPLOYMENT AGREEMENT


    Employment Agreement (the "Agreement"), dated July 31, 1997, by and between
Pentegra Dental Group, Inc., a Delaware corporation (the "Company"), and Omer K.
Reed, D.D.S. ("Employee").

    In consideration of the mutual premises and conditions contained herein,
the parties hereto agree as follows:

    Section 1.  EMPLOYMENT.  The Company hereby agrees to employ Employee,
and Employee hereby accepts employment by the Company, upon the terms and
subject to the conditions hereinafter set forth.

    Section 2.  DUTIES.  Employee shall serve as Clinical Officer of the
Company.  Employee agrees to devote his full time and best efforts to the
performance of his duties to the Company.  All of Employee's duties and
authorities shall be subject to the reasonable direction and control of the
Company's Chief Executive Officer or Board of Directors.  The Company shall use
its best efforts to elect Employee as a director of the Company during the term
of this Agreement.  Employee acknowledges that the executive offices of the
Company will be located in Phoenix, Arizona. 

    Section 3.  TERM.  Except as otherwise provided in Section 6 hereof, the
term of this Agreement shall be for three (3) years ("Term"), commencing on the
date the initial public offering of the Company's common stock ("IPO") is
consummated (the "Commencement Date").
  
    Section 4.  COMPENSATION AND BENEFITS.  In consideration for the
services of the Employee hereunder, the Company will compensate Employee as
follows:

         (a)  BASE SALARY.  Commencing on the Commencement Date, Employee shall
    be entitled to receive a base salary of $175,000.00 per annum or as
    increased from time to time by the Board of Directors of the Company or the
    Compensation Committee of the Board of Directors ("Compensation Committee")
    thereof.

         (b)  SIGNING BONUS.  Employee shall be entitled to receive a signing
    bonus on the Commencement Date, which signing bonus shall be payable as
    follows: $10,000 payable on the closing of each dental practice acquired by
    the Company following the Commencement Date up to a maximum amount of
    $1,250,000.00; provided, however, that on the third anniversary of the
    Commencement Date, Employee shall be entitled to receive the sum of
    $1,250,000.00 less all amounts paid under this subsection and such signing
    bonus shall thereby be paid in full. In no event shall the signing bonus
    payable pursuant to this subsection exceed $1,250,000.00.   Such bonus
    shall be payable in the proportion of cash and stock as the Company and
    Employee shall agree. 

<PAGE>

         (c)  BONUS.  Employee shall be entitled to receive a bonus as
    established from time to time by the Board of Directors of the Company or
    the Compensation Committee thereof.
         
         (d)  BENEFITS.  During the term of this Agreement, Employee shall be
    entitled to participate in and receive benefits under any and all employee
    benefit plans and programs which are from time to time generally made
    available to the executive employees of the Company, subject to approval
    and grant by the appropriate committee of the Board of Directors of the
    Company with respect to programs calling for such approvals or grants. 
    Additionally, Employee shall be entitled to medical, dental, disability,
    life insurance and other benefits as are generally made available to the
    executive employees of the Company.  Medical, dental and other health
    insurances shall also be provided for Employee's spouse and children.  
    Employee shall be entitled to three (3) weeks vacation and such other days
    for personal use as reasonably determined by the Company.

    Section 5.  EXPENSES.  It is acknowledged by the parties that Employee,
in connection with the services to be performed by him pursuant to the terms of
this Agreement, will be required to make payments for travel, entertainment of
business associates, mobile telephone and similar expenses.  The Company will
reimburse Employee for all reasonable expenses of types authorized by the
Company and incurred by Employee in the performance of his duties hereunder. 
Employee will comply with such budget limitations and approval and reporting
requirements with respect to expenses as the Company may establish from time to
time.

    Section 6.  TERMINATION.  Employee's employment hereunder will commence
on the Commencement Date and continue until the end of the Term, except that the
employment of Employee hereunder will terminate earlier upon the occurrence of
the following events:

         (a)  DEATH OR DISABILITY.  Employee's employment will terminate
    immediately upon the death of Employee during the term of his employment
    hereunder or, at the option of the Company, in the event of Employee's
    disability, upon 30 days notice to Employee.  Employee will be deemed
    disabled if, as a result of Employee's incapacity due to physical or mental
    illness, Employee shall have been absent from his duties with the Company
    on a full-time basis for 120 consecutive business days and Employee shall
    not reasonably be expected to be able to resume his duties within 60 days
    of the end of such 120 day period. In the event of the termination of this
    Agreement pursuant to this subsection, Employee will be entitled to the
    portion of his base salary accrued but unpaid from the last monthly payment
    date to the date of termination, expense reimbursements under Section 5
    hereof for expenses incurred in the performance of his duties hereunder
    prior to termination, and the sum of $1,250,000.00 less all amounts paid to
    Employee under subsection 4(b) as of the occurrence of such event.

         (b)  FOR CAUSE.  The Company may terminate the Employee's employment
    for "Cause" immediately upon written notice by the Company to Employee. 
    For purposes of this Agreement, a termination will be for Cause if: (i)
    Employee willfully and continuously 

<PAGE>

    fails to perform his duties with the Company (other than any such failure 
    resulting from incapacity due to physical or mental illness), (ii) Employee
    willfully engages in gross misconduct materially and demonstrably injurious
    to the Company or (iii) Employee has been convicted of a felony.  In the 
    event of the termination of this Agreement pursuant to this subsection, 
    Employee will not be entitled to any severance pay or other compensation
    except for any portion of his base salary accrued but unpaid from the last
    monthly payment date to the date of termination and expense reimbursements
    under Section 5 hereof for expenses incurred in the performance of his 
    duties hereunder prior to termination.

         (c)  BY COMPANY WITHOUT CAUSE.  If the Company terminates this
    Agreement at any time during the Term without cause, the Company shall pay
    Employee, as Employee's sole remedy in connection with such termination,
    severance pay in the amount of Employee's base salary for the remainder of
    the Term as set forth in Section 4(a) hereof, together with the sum of
    $1,250,000 less the amounts paid by the Company to Employee pursuant to
    Section 4(b) hereof.  The Company will also pay Employee the portion of
    his base salary accrued but unpaid from the last monthly payment date to
    the date of termination and expense reimbursements under Section 5 hereof
    for expenses incurred in the performance of his duties hereunder prior to
    termination.  The Company will pay the severance payments provided for in
    this subsection in a lump sum amount concurrent with Employee's termination
    of employment.  The Company will not be entitled to offset or mitigate the
    amounts due under this subsection by any other amounts payable to Employee,
    including amounts payable or paid to Employee by third parties for
    Employee's services after the date of termination.

    Section 7.  CONFIDENTIAL INFORMATION.  Employee recognizes and 
acknowledges that certain assets of the Company and its affiliates, including 
without limitation information regarding customers, pricing policies, methods 
of operation, proprietary computer programs, sales, products, profits, costs, 
markets, key personnel, formulae, product applications, technical processes, 
and trade secrets (hereinafter called "Confidential Information") are 
valuable, special and unique assets of the Company and its affiliates.  
Employee will not, during or after his term of employment, disclose any of 
the Confidential Information to any person, firm, corporation, association, 
or any other entity for any reason or purpose whatsoever, directly or 
indirectly, except as may be required pursuant to his employment hereunder, 
unless and until such Confidential Information becomes publicly available 
other than as a consequence of the breach by Employee of his confidentiality 
obligations hereunder.  In the event of the termination of his employment, 
whether voluntary or involuntary and whether by the Company or Employee, 
Employee will deliver to the Company all documents and data pertaining to the 
Confidential Information and will not take with him any documents or data of 
any kind or any reproductions (in whole or in part) of any items relating to 
the Confidential Information.

    Section 8.  NONCOMPETITION.  Until one year after termination of 
Employee's employment with the Company for any reason, whether voluntary or 
involuntary, Employee will not (i) engage directly or indirectly, alone or as 
a shareholder, partner, officer, director, employee or consultant of any 
other business organization, in any business activities which relate to the 

<PAGE>

acquisition and consolidation of, or consulting, management or similar 
services for, dental practices which were either conducted by the Company at 
the time of Employee's termination or "Proposed to be Conducted" (as defined 
herein) by the Company at the time of such termination (the "Designated 
Industry"), (ii) divert to any competitor of the Company in the Designated 
Industry any customer of Employee, or (iii) solicit or encourage any officer, 
employee, or consultant of the Company to leave its employ for employment by 
or with any competitor of the Company in the Designated Industry.  The 
parties hereto acknowledge that Employee's noncompetition obligations 
hereunder will not preclude Employee from (i) owning less than 5% of the 
common stock of any publicly traded corporation conducting business 
activities in the Designated Industry or (ii) serving as an officer, 
director, stockholder or employee of an entity engaged in the healthcare 
industry whose business operations are not competitive with those of the 
Company.  "Proposed to be Conducted", as used herein, shall mean those 
business activities which are the subject of a formal, written business plan 
approved by the Board of Directors prior to termination of Employee's 
employment and which the Company takes material action to implement within 12 
months of the termination of Employee's employment.  Employee will continue 
to be bound by the provisions of this Section 8 until their expiration and 
will not be entitled to any compensation from the Company with respect 
thereto.  If at any time the provisions of this Section 8 are determined to 
be invalid or unenforceable, by reason of being vague or unreasonable as to 
area, duration or scope of activity, this Section 8 will be considered 
divisible and will become and be immediately amended to only such area, 
duration and scope of activity as will be determined to be reasonable and 
enforceable by the court or other body having jurisdiction over the matter; 
and Employee agrees that this Section 8 as so amended will be valid and 
binding as though any invalid or unenforceable provision had not been 
included herein.

    Section 9.  GENERAL.

         (a)  NOTICES.  All notices and other communications hereunder will be
    in writing or by written telecommunication, and will be deemed to have been
    duly given if delivered personally or if mailed by certified mail, return
    receipt requested or by written telecommunication, to the relevant address
    set forth below, or to such other address as the recipient of such notice
    or communication will have specified to the other party hereto in
    accordance with this Section 9(a):

    If to the Company, to:                  with a copy to:

    Pentegra Dental Group, Inc.             Jackson & Walker, L.L.P.
    2999 N. 44th Street, Suite 650          901 Main Street, Suite 6000
    Phoenix, Arizona 85018                  Dallas, Texas  75202
    Attn: Chief Executive Officer           Attn: James S. Ryan, III
    Fax No.: (602) 952-0544                 Fax No.:  (214) 953-5822


<PAGE>

    If to Employee, to:

    3255 E. Valley Vista Lane
    Paradise Valley, Arizona 85253 

         (b)  WITHHOLDING; NO OFFSET.  All payments required to be made by the
    Company under this Agreement to Employee will be subject to the withholding
    of such amounts, if any, relating to federal, state and local taxes as may
    be required by law.  No payment under this Agreement will be subject to
    offset or reduction attributable to any amount Employee may owe to the
    Company or any other person.

         (c)  EQUITABLE REMEDIES.  Each of the parties hereto acknowledges and
    agrees that upon any breach by Employee of his obligations under any of
    Sections 8 and 9 hereof, the Company will have no adequate remedy at law,
    and accordingly will be entitled to specific performance and other
    appropriate injunctive and equitable relief.

         (d)  SEVERABILITY.  If any provision of this Agreement is held to be
    illegal, invalid or unenforceable, such provision will be fully severable
    and this Agreement will be construed and enforced as if such illegal,
    invalid or unenforceable provision never comprised a part hereof; and the
    remaining provisions hereof will remain in full force and effect and will
    not be affected by the illegal, invalid or unenforceable provision or by
    its severance herefrom.  Furthermore, in lieu of such illegal, invalid or
    unenforceable provision, there will be added automatically as part of this
    Agreement a provision as similar in its terms to such illegal, invalid or
    unenforceable provision as may be possible and be legal, valid and
    enforceable.

         (e)  WAIVERS.  No delay or omission by either party hereto in
    exercising any right, power or privilege hereunder will impair such right,
    power or privilege, nor will any single or partial exercise of any such
    right, power or privilege preclude any further exercise thereof or the
    exercise of any other right, power or privilege.

         (f)  COUNTERPARTS.  This Agreement may be executed in multiple
    counterparts, each of which will be deemed an original, and all of which
    together will constitute one and the same instrument.

         (g)  CAPTIONS.  The captions in this Agreement are for convenience of
    reference only and will not limit or otherwise affect any of the terms or
    provisions hereof.

         (h)  REFERENCE TO AGREEMENT.  Use of the words "herein," "hereof,"
    "hereto" and the like in this Agreement refer to this Agreement only as a
    whole and not to any particular subsection or provision of this Agreement,
    unless otherwise noted.

<PAGE>

         (i)  BINDING AGREEMENT.  This Agreement will be binding upon and inure
    to the benefit of the parties and will be enforceable by the personal
    representatives and heirs of Employee and the successors of the Company. 
    If Employee dies while any amounts would still be payable to him hereunder,
    such amounts will be paid to Employee's estate.  This Agreement is not
    otherwise assignable by Employee.

         (j)  ENTIRE AGREEMENT.  This Agreement contains the entire
    understanding of the parties, supersedes all prior agreements and
    understandings relating to the subject matter hereof and may not be amended
    except by a written instrument hereafter signed by each of the parties
    hereto.

         (k)  GOVERNING LAW.  This Agreement and the performance hereof will be
    construed and governed in accordance with the laws of the State of Arizona,
    without regard to its choice of law principles.

    Section 10.  BINDING ARBITRATION.  Any controversy or claim arising out
of or relating to this Agreement, or the breach thereof, shall be settled
exclusively by arbitration in Phoenix, Arizona, in accordance with the
Commercial Arbitration Rules of the American Arbitration Association then in
effect.  Judgment upon the award rendered by the arbitrator(s) may be entered
in, and enforced by, any court having jurisdiction thereof.

    EXECUTED as of the date and year first above written.

                                            PENTEGRA DENTAL GROUP, INC.


                                            By: /s/ Gary S. Glatter
                                                ----------------------------- 
                                            Its: Chief Executive Officer
                                                ----------------------------- 

                                            EMPLOYEE

                                            /s/ Omer K. Reed
                                            --------------------------------- 
                                            Omer Reed, DDS 


<PAGE>

                                                                   EXHIBIT 10.3



                               EMPLOYMENT AGREEMENT


    Employment Agreement (the "Agreement"), effective July 1, 1997, by and
between Pentegra Dental Group, Inc., a Delaware corporation (the "Company"), and
Gary S. Glatter ("Employee").

    In consideration of the mutual premises and conditions contained herein,
the parties hereto agree as follows:

    Section 1.  EMPLOYMENT.  The Company hereby agrees to employ Employee,
and Employee hereby accepts employment by the Company, upon the terms and
subject to the conditions hereinafter set forth.

    Section 2.  DUTIES.  Employee shall serve as the Chief Executive Officer
and President of the Company.  Employee agrees to devote his full time and best
efforts to the performance of his duties to the Company.  All of Employee's
powers and authorities shall be subject to the reasonable direction and control
of the Company's Board of Directors ("Board").  The Company shall use its best
efforts to elect Employee as a director of the Company during the term of this
Agreement.  Employee acknowledges that the executive offices of the Company will
be located in Phoenix, Arizona. 

    Section 3.  TERM.  Except as otherwise provided in Section 6 hereof, the
term of this Agreement shall be for at least four (4) years commencing on July
1, 1997 (the "Commencement Date") and ending on the date that is four (4) years
from the date the initial public offering of the Company's common stock ("IPO")
is consummated (the "Term").
  
    Section 4.  COMPENSATION AND BENEFITS.  In consideration for the
services of the Employee hereunder, the Company will compensate Employee as
follows:

         (a)  BASE SALARY.  Commencing on the Commencement Date, Employee shall
    be entitled to receive a base salary of (i) $175,000 per annum for the
    period from July 1, 1997 through June 30, 1997, (ii) $200,000 per annum for
    the period from July 1, 1998 through June 30, 1999, (iii) $225,000 per
    annum for the period from July 1, 1999 through June 30, 2000, and (iv)
    $250,000 per annum from July 1, 2000 thereafter, or as increased from time
    to time by the Board of Directors of the Company or the Compensation
    Committee of the Board of Directors ("Compensation Committee") thereof. 

         (b)  BONUS.  Commencing January 1, 1998, Employee shall be eligible to
    receive a bonus each year during the term of this Agreement in accordance
    with the bonus plan set forth on Exhibit A.  Such bonus shall be payable by
    the Company to Employee on or before 90 days from the end of each calendar
    year.   


                                       1

<PAGE>

         (c)  BENEFITS. The Company shall grant Employee options to purchase
    shares of the Company's Common Stock at the initial public offering price
    for the Company's Common Stock on terms and in a quantity to be agreed upon
    following good faith negotiations between the Company's management team and
    the underwriters of the IPO, which terms shall be consistent with the terms
    of the stock option plans adopted by the Company pursuant to which the
    options are granted.   It currently is contemplated that such options will
    vest over a period of four years.  

         In addition, during the term of this Agreement, Employee shall be
    entitled to participate in and receive benefits under any and all employee
    benefit plans and programs which are from time to time generally made
    available to the executive employees of the Company, subject to approval
    and grant by the appropriate committee of the Board of Directors of the
    Company with respect to programs calling for such approvals or grants. 
    Additionally, Employee shall be entitled to medical, dental, disability,
    life insurance and other benefits as are generally made available to the
    executive employees of the Company.  Medical, dental and other health
    insurances shall also be provided for Employee's spouse and children.  
    Employee shall be entitled to four (4) weeks vacation and such other days
    for personal and religious reasons as reasonably determined by the Company.

    Section 5.  EXPENSES; AUTOMOBILE.  It is acknowledged by the parties
that Employee, in connection with the services to be performed by him pursuant
to the terms of this Agreement, will be required to make payments for travel,
entertainment of business associates, mobile telephone and similar expenses. 
The Company will reimburse Employee for all reasonable expenses of types
authorized by the Company and incurred by Employee in the performance of his
duties hereunder.  Employee will comply with such budget limitations and
approval and reporting requirements with respect to expenses as the Company may
establish from time to time.  The Company will provide Employee with an 800#
pager, a cellular phone and a corporate credit card from a major issuer (e.g.,
American Express, Master Card or Visa International) to facilitate payment of
such expenses.

         The Company shall provide Employee with a suitable automobile for
business use and shall pay all costs and expenses reasonably incurred by
Employee in connection with the business use thereof, including purchase or
leasing costs, fuel, maintenance, insurance, garaging and mobile (cellular)
telephone.

    Section 6.  TERMINATION.  Employee's employment hereunder will commence
on the Commencement Date and continue until the end of the Term, except that the
employment of Employee hereunder will terminate earlier upon the occurrence of
the following events:

         (a)  DEATH OR DISABILITY.  Employee's employment will terminate
    immediately upon the death of Employee during the term of his employment
    hereunder or, at the option of the Company, in the event of Employee's
    disability, upon 30 days notice to Employee.  Employee will be deemed
    disabled if, as a result of Employee's incapacity due to physical or mental
    illness, Employee shall have been absent from his duties with the Company
    on a 


                                       2

<PAGE>

    full-time basis for 120 consecutive business days and Employee shall not
    reasonably be expected to be able to resume his duties within 60 days
    of the end of such 120 day period. In the event of the termination of this
    Agreement pursuant to this subsection, Employee or the legal representative
    of Employee's estate will be paid base salary and bonus (determined on a
    quarterly rather than an accrual basis) to the end of the calendar quarter
    in which Employee dies or in which such termination occurs, as the case may
    be.  Additionally, Employee or the legal representative of Employee's
    estate will be entitled to expense reimbursements under Section 5 hereof
    for expenses incurred in the performance of Employee's duties hereunder
    prior to termination.

         (b)  FOR CAUSE.  The Company may terminate the Employee's employment
    for "Cause" immediately upon written notice by the Company to Employee. 
    For purposes of this Agreement, a termination will be for Cause if: (i)
    Employee willfully and continuously fails to perform his duties with the
    Company (other than any such failure resulting from incapacity due to
    physical or mental illness), (ii) Employee willfully engages in gross
    misconduct materially and demonstrably injurious to the Company or (iii)
    Employee has been convicted of a felony.  In the event of the termination
    of this Agreement pursuant to this subsection, Employee will not be
    entitled to any severance pay or other compensation except for any portion
    of his base salary accrued but unpaid from the last monthly payment date to
    the date of termination and expense reimbursements under Section 5 hereof
    for expenses incurred in the performance of his duties hereunder prior to
    termination.

         (c)  BY COMPANY WITHOUT CAUSE. If the Company terminates this
    Agreement at any time during the Term without cause, the Company shall pay
    Employee, as Employee's sole remedy in connection with such termination,
    severance pay in the amount of Employee's base salary for the remainder of
    the Term as set forth in Section 4(a) hereof.  The Company will also pay
    Employee the bonus due Employee under Section 4(b) hereof through the end
    of the calendar year in which such termination shall occur, which bonus
    shall be payable on the date for payment set forth in Section 4(b) hereof. 
    The Company will pay the severance payments provided for in this subsection
    (other than in the foregoing sentence) in a lump sum amount concurrent with
    Employee's termination of employment.  The Company will also pay Employee
    the portion of his base salary accrued but unpaid from the last monthly
    payment date to the date of termination and expense reimbursements under
    Section 5 hereof for expenses incurred in the performance of his duties
    hereunder prior to termination. The Company will not be entitled to offset
    or mitigate the amounts due under this subsection by any other amounts
    payable to Employee, including amounts payable or paid to Employee by third
    parties for Employee's services after the date of termination. 

    Section 7.  EFFECT OF TERMINATION ON OPTIONS.  The Employee has been
granted options to purchase shares of the Company's Common Stock and may
continue to be granted such options from time to time.  The effect of the
termination of the Employee's employment on such options shall be determined by
the option agreement between the Employee and the Company. 


                                       3

<PAGE>

    Section 8.  CONFIDENTIAL INFORMATION.  Employee recognizes and
acknowledges that certain assets of the Company and its affiliates, including
without limitation information regarding customers, pricing policies, methods of
operation, proprietary computer programs, sales, products, profits, costs,
markets, key personnel, formulae, product applications, technical processes, and
trade secrets (hereinafter called "Confidential Information") are valuable,
special and unique assets of the Company and its affiliates.  Employee will not,
during or after his term of employment, disclose any of the Confidential
Information to any person, firm, corporation, association, or any other entity
for any reason or purpose whatsoever, directly or indirectly, except as may be
required pursuant to his employment hereunder, unless and until such
Confidential Information becomes publicly available other than as a consequence
of the breach by Employee of his confidentiality obligations hereunder.  In the
event of the termination of his employment, whether voluntary or involuntary and
whether by the Company or Employee, Employee will deliver to the Company all
documents and data pertaining to the Confidential Information and will not take
with him any documents or data of any kind or any reproductions (in whole or in
part) of any items relating to the Confidential Information.

    Section 9.  NONCOMPETITION.  Until one year after termination of 
Employee's employment with the Company for any reason, whether voluntary or 
involuntary, Employee will not (i) engage directly or indirectly, alone or as 
a shareholder, partner, officer, director, employee or consultant of any 
other business organization, in any business activities which relate to the 
acquisition and consolidation of dental practices which were either conducted 
by the Company at the time of Employee's termination or "Proposed to be 
Conducted" (as defined herein) by the Company at the time of such termination 
(the "Designated Industry"), (ii) divert to any competitor of the Company in 
the Designated Industry any customer of Employee, or (iii) solicit or 
encourage any officer, employee, or consultant of the Company to leave its 
employ for employment by or with any competitor of the Company in the 
Designated Industry. The parties hereto acknowledge that Employee's 
noncompetition obligations hereunder will not preclude Employee from (i) 
owning less than 5% of the common stock of any publicly traded corporation 
conducting business activities in the Designated Industry or (ii) serving as 
an officer, director, stockholder or employee of an entity engaged in the 
healthcare industry whose business operations are not competitive with those 
of the Company.  "Proposed to be Conducted", as used herein, shall mean those 
business activities which are the subject of a formal, written business plan 
approved by the Board of Directors prior to termination of Employee's 
employment and which the Company takes material action to implement within 12 
months of the termination of Employee's employment.  Employee will continue 
to be bound by the provisions of this Section 9 until their expiration and 
will not be entitled to any compensation from the Company with respect 
thereto.  If at any time the provisions of this Section 9 are determined to 
be invalid or unenforceable, by reason of being vague or unreasonable as to 
area, duration or scope of activity, this Section 9 will be considered 
divisible and will become and be immediately amended to only such area, 
duration and scope of activity as will be determined to be reasonable and 
enforceable by the court or other body having jurisdiction over the matter; 
and Employee agrees that this Section 9 as so amended will be valid and 
binding as though any invalid or unenforceable provision had not been 
included herein.

    Section 10.  GENERAL.


                                       4

<PAGE>

         (a)  NOTICES.  All notices and other communications hereunder will be
    in writing or by written telecommunication, and will be deemed to have been
    duly given if delivered personally or if mailed by certified mail, return
    receipt requested or by written telecommunication, to the relevant address
    set forth below, or to such other address as the recipient of such notice
    or communication will have specified to the other party hereto in
    accordance with this Section 10(a):

    If to the Company, to:                  with a copy to:

    Pentegra Dental Group, Inc.             Jackson & Walker, L.L.P.
    2999 N. 44th Street, Suite 650          901 Main Street, Suite 6000
    Phoenix, Arizona 85018                  Dallas, Texas 75202
    Attn: Chief Executive Officer           AttAttn: James S. Ryan, III
    Fax No.: (602) 952-0544                 Fax No.: (214) 953-5822

    If to Employee, to:
    
    11160 East Cochise Avenue
    Scottsdale, Arizona 85259 
    Fax No.: (602) 860-6679

         (b)  WITHHOLDING; NO OFFSET.  All payments required to be made by the
    Company under this Agreement to Employee will be subject to the withholding
    of such amounts, if any, relating to federal, state and local taxes as may
    be required by law.  No payment under this Agreement will be subject to
    offset or reduction attributable to any amount Employee may owe to the
    Company or any other person.

         (c)  EQUITABLE REMEDIES.  Each of the parties hereto acknowledges and
    agrees that upon any breach by Employee of his obligations under any of
    Sections 8 and 9 hereof, the Company will have no adequate remedy at law,
    and accordingly will be entitled to specific performance and other
    appropriate injunctive and equitable relief.

         (d)  SEVERABILITY.  If any provision of this Agreement is held to be
    illegal, invalid or unenforceable, such provision will be fully severable
    and this Agreement will be construed and enforced as if such illegal,
    invalid or unenforceable provision never comprised a part hereof; and the
    remaining provisions hereof will remain in full force and effect and will
    not be affected by the illegal, invalid or unenforceable provision or by
    its severance herefrom.  Furthermore, in lieu of such illegal, invalid or
    unenforceable provision, there will be added automatically as part of this
    Agreement a provision as similar in its terms to such illegal, invalid or
    unenforceable provision as may be possible and be legal, valid and
    enforceable.


                                       5

<PAGE>

         (e)  WAIVERS.  No delay or omission by either party hereto in
    exercising any right, power or privilege hereunder will impair such right,
    power or privilege, nor will any single or partial exercise of any such
    right, power or privilege preclude any further exercise thereof or the
    exercise of any other right, power or privilege.

         (f)  COUNTERPARTS.  This Agreement may be executed in multiple
    counterparts, each of which will be deemed an original, and all of which
    together will constitute one and the same instrument.

         (g)  CAPTIONS.  The captions in this Agreement are for convenience of
    reference only and will not limit or otherwise affect any of the terms or
    provisions hereof.

         (h)  REFERENCE TO AGREEMENT.  Use of the words "herein," "hereof,"
    "hereto" and the like in this Agreement refer to this Agreement only as a
    whole and not to any particular subsection or provision of this Agreement,
    unless otherwise noted.

         (i)  BINDING AGREEMENT.  This Agreement will be binding upon and inure
    to the benefit of the parties and will be enforceable by the personal
    representatives and heirs of Employee and the successors of the Company. 
    If Employee dies while any amounts would still be payable to him hereunder,
    such amounts will be paid to Employee's estate.  This Agreement is not
    otherwise assignable by Employee.

         (j)  ENTIRE AGREEMENT.  This Agreement contains the entire
    understanding of the parties, supersedes all prior agreements and
    understandings relating to the subject matter hereof and may not be amended
    except by a written instrument hereafter signed by each of the parties
    hereto.  This Agreement supersedes and replaces all prior employment
    agreements between Employee and the Company.

         (k)  GOVERNING LAW.  This Agreement and the performance hereof will be
    construed and governed in accordance with the laws of the State of Arizona,
    without regard to its choice of law principles.

    Section 11.  BINDING ARBITRATION.  Any controversy or claim arising out
of or relating to this Agreement, or the breach thereof, shall be settled
exclusively by arbitration in Phoenix, Arizona, in accordance with the
Commercial Arbitration Rules of the American Arbitration Association then in
effect.  Judgment upon the award rendered by the arbitrator(s) may be entered
in, and enforced by, any court having jurisdiction thereof.

    EXECUTED as of the date and year first above written.

                                       PENTEGRA DENTAL GROUP, INC.


                                       6

<PAGE>

                                       By: /s/ James L. Dunn, Jr.
                                          ----------------------------------
                                       Its: President
                                           ---------------------------------














                                       7

<PAGE>

                                       EMPLOYEE


                                       /s/ Gary S. Glatter
                                       --------------------------------------
                                       Gary S. Glatter














                                       8

<PAGE>

                                      EXHIBIT A

                                        BONUS


    Employee shall be eligible to receive an annual cash bonus in an amount
equal to up to 200% percentage of his base salary in the event that the Company
experiences at least 5% or greater growth in earnings per share on a year to
year basis (calculated on a pro forma basis for the calendar year prior to the
Company's first fiscal year of operations).  For purposes of determining the
applicable year's earnings per share, the cash bonus payable hereunder and under
all other agreements between the Company and its officers shall be included
prior to such determination.

         Percentage Increase in             Bonus as a Percentage
         Earnings Per Share                 Of Annual Base Salary

         5.0-9.99%                               50%
         10%-19.99%                              100%
         20%-29.99%                              150%
         30% or over                             200%













                                       9


<PAGE>

                                                                   EXHIBIT 10.4



                                 EMPLOYMENT AGREEMENT


    Employment Agreement (the "Agreement"), dated July 12, 1997, by and between
Pentegra Dental Group, Inc., a Delaware corporation (the "Company"), and John
Thayer ("Employee").

    In consideration of the mutual premises and conditions contained herein,
the parties hereto agree as follows:

    Section 1.  EMPLOYMENT.  The Company hereby agrees to employ Employee,
and Employee hereby accepts employment by the Company, upon the terms and
subject to the conditions hereinafter set forth.

    Section 2.  DUTIES.  Employee shall serve as the Chief Operating Officer
of the Company.  Employee agrees to devote his full time and best efforts to the
performance of his duties to the Company.  Employee acknowledges that the
executive offices of the Company will be located in Phoenix, Arizona. 

    Section 3.  TERM.  Except as otherwise provided in Section 6 hereof, the
term of this Agreement shall be for five (5) years ("Term"), commencing on the
date the initial public offering of the Company's common stock ("IPO") is
consummated (the "Commencement Date").
  
    Section 4.  COMPENSATION AND BENEFITS.  In consideration for the
services of the Employee hereunder, the Company will compensate Employee as
follows:

         (a)  BASE SALARY.  Commencing on the Commencement Date, Employee shall
    be entitled to receive a base salary of $125,000.00 per annum or as
    increased from time to time by the Board of Directors of the Company or the
    Compensation Committee of the Board of Directors ("Compensation Committee")
    thereof.

         (b)  BONUS.  Commencing January 1, 1998, Employee shall be eligible to
    receive a bonus each year during the term of this Agreement in accordance
    with the bonus plan set forth on Exhibit A.  Such bonus shall be payable by
    the Company to Employee on or before 90 days from the end of each calendar
    year.  In addition, on the effective date of the IPO, Employee shall
    receive a bonus in the amount of $25,000 cash.

         (c)  BENEFITS. The Company shall grant Employee options to purchase
    shares of the Company's Common Stock at the initial public offering price
    for the Company's Common Stock on terms and in a quantity to be agreed upon
    following good faith negotiations between the Company's management team and
    the underwriters of the IPO, which terms shall be consistent with the terms
    of the stock option plans adopted by the Company pursuant to which the
    options are granted.  It currently is contemplated that such options will
    vest over a period of five years.  

<PAGE>

         In addition, during the term of this Agreement, Employee shall be
    entitled to participate in and receive benefits under any and all employee
    benefit plans and programs which are from time to time generally made
    available to the executive employees of the Company, subject to approval
    and grant by the appropriate committee of the Board of Directors of the
    Company with respect to programs calling for such approvals or grants. 
    Additionally, Employee shall be entitled to medical, dental, disability,
    life insurance and other benefits as are generally made available to the
    executive employees of the Company.  Medical, dental and other health
    insurances shall also be provided for Employee's spouse and children.  
    Employee shall be entitled to three (3) weeks vacation and such other days
    for personal use as reasonably determined by the Company.

    Section 5.  EXPENSES.  It is acknowledged by the parties that Employee,
in connection with the services to be performed by him pursuant to the terms of
this Agreement, will be required to make payments for travel, entertainment of
business associates, mobile telephone and similar expenses.  The Company will
reimburse Employee for all reasonable expenses of types authorized by the
Company and incurred by Employee in the performance of his duties hereunder. 
Employee will comply with such budget limitations and approval and reporting
requirements with respect to expenses as the Company may establish from time to
time.

    Section 6.  TERMINATION.  Employee's employment hereunder will commence
on the Commencement Date and continue until the end of the Term, except that the
employment of Employee hereunder will terminate earlier upon the occurrence of
the following events:

         (a)  DEATH OR DISABILITY.  Employee's employment will terminate
    immediately upon the death of Employee during the term of his employment
    hereunder or, at the option of the Company, in the event of Employee's
    disability, upon 30 days notice to Employee.  Employee will be deemed
    disabled if, as a result of Employee's incapacity due to physical or mental
    illness, Employee shall have been absent from his duties with the Company
    on a full-time basis for 120 consecutive business days and Employee shall
    not reasonably be expected to be able to resume his duties within 60 days
    of the end of such 120 day period. In the event of the termination of this
    Agreement pursuant to this subsection, Employee will not be entitled to any
    severance pay or other compensation except for any portion of his base
    salary accrued but unpaid from the last monthly payment date to the date of
    termination and expense reimbursements under Section 5 hereof for expenses
    incurred in the performance of his duties hereunder prior to termination.

         (b)  FOR CAUSE.  The Company may terminate the Employee's employment
    for "Cause" immediately upon written notice by the Company to Employee. 
    For purposes of this Agreement, a termination will be for Cause if: (i)
    Employee willfully and continuously fails to perform his duties with the
    Company (other than any such failure resulting from incapacity due to
    physical or mental illness), (ii) Employee willfully engages in gross
    misconduct materially and demonstrably injurious to the Company or (iii)
    Employee has been convicted of a felony.  In the event of the termination
    of this Agreement pursuant to this 

<PAGE>

    subsection, Employee will not be entitled to any severance pay or other 
    compensation except for any portion of his base salary accrued but unpaid
    from the last monthly payment date to the date of termination and expense
    reimbursements under Section 5 hereof for expenses incurred in the 
    performance of his duties hereunder prior to termination.

         (c)  BY COMPANY WITHOUT CAUSE.  The Company may terminate this
    Agreement during the Term at any time for any reason without cause.  In the
    event of the termination of this Agreement pursuant to this subsection, the
    Company will pay Employee, as Employee's sole remedy in connection with
    such termination, severance pay in the amount determined by multiplying (i)
    Employee's monthly base salary at the rate in effect immediately preceding
    the termination of Employee's employment, by (ii) in the event the Employee
    has relocated to the Phoenix, Arizona area, twelve (12) months, or in the
    event the Employee has not relocated to the Phoenix, Arizona area or
    resides in the Phoenix, Arizona area on the date hereof, six (6) months.  
    The Company will also pay Employee the portion of his base salary accrued
    but unpaid from the last monthly payment date to the date of termination
    and expense reimbursements under Section 5 hereof for expenses incurred in
    the performance of his duties hereunder prior to termination.  The Company
    will also pay Employee the bonus due Employee under Section 4(a) hereunder
    accrued to the date of termination, which bonus shall be payable on the
    date for payment set forth in Section 4(a) hereof.  The Company will pay
    the severance payments provided for in this subsection (other than in the
    foregoing sentence) in a lump sum amount concurrent with Employee's
    termination of employment.  The Company will not be entitled to offset or
    mitigate the amount due under this subsection by any other amounts payable
    to Employee, including amounts payable or paid to Employee by third parties
    for Employee's services after the date of termination.

    Section 7.  EFFECT OF TERMINATION ON OPTIONS.  The Employee has been 
granted options to purchase shares of the Company's Common Stock and may 
continue to be granted such options from time to time.  The effect of the 
termination of the Employee's employment on such options shall be determined 
by the option plan. 

    Section 8.  CONFIDENTIAL INFORMATION.  Employee recognizes and
acknowledges that certain assets of the Company and its affiliates, including
without limitation information regarding customers, pricing policies, methods of
operation, proprietary computer programs, sales, products, profits, costs,
markets, key personnel, formulae, product applications, technical processes, and
trade secrets (hereinafter called "Confidential Information") are valuable,
special and unique assets of the Company and its affiliates.  Employee will not,
during or after his term of employment, disclose any of the Confidential
Information to any person, firm, corporation, association, or any other entity
for any reason or purpose whatsoever, directly or indirectly, except as may be
required pursuant to his employment hereunder, unless and until such
Confidential Information becomes publicly available other than as a consequence
of the breach by Employee of his confidentiality obligations hereunder.  In the
event of the termination of his employment, whether voluntary or involuntary and
whether by the Company or Employee, Employee will deliver to the Company all
documents and data pertaining 

<PAGE>

to the Confidential Information and will not take with him any documents or 
data of any kind or any reproductions (in whole or in part) of any items 
relating to the Confidential Information.

    Section 9.  NONCOMPETITION.  Until one year after termination of
Employee's employment with the Company for any reason, whether voluntary or
involuntary, Employee will not (i) engage directly or indirectly, alone or as a
shareholder, partner, officer, director, employee or consultant of any other
business organization, in any business activities which relate to the
acquisition and consolidation of dental practices which were either conducted by
the Company at the time of Employee's termination or "Proposed to be Conducted"
(as defined herein) by the Company at the time of such termination (the
"Designated Industry"), (ii) divert to any competitor of the Company in the
Designated Industry any customer of Employee, or (iii) solicit or encourage any
officer, employee, or consultant of the Company to leave its employ for
employment by or with any competitor of the Company in the Designated Industry. 
The parties hereto acknowledge that Employee's noncompetition obligations
hereunder will not preclude Employee from (i) owning less than 5% of the common
stock of any publicly traded corporation conducting business activities in the
Designated Industry or (ii) serving as an officer, director, stockholder or
employee of an entity engaged in the healthcare industry whose business
operations are not competitive with those of the Company.  "Proposed to be
Conducted", as used herein, shall mean those business activities which are the
subject of a formal, written business plan approved by the Board of Directors
prior to termination of Employee's employment and which the Company takes
material action to implement within 12 months of the termination of Employee's
employment.  Employee will continue to be bound by the provisions of this
Section 9 until their expiration and will not be entitled to any compensation
from the Company with respect thereto.  If at any time the provisions of this
Section 9 are determined to be invalid or unenforceable, by reason of being
vague or unreasonable as to area, duration or scope of activity, this Section 9
will be considered divisible and will become and be immediately amended to only
such area, duration and scope of activity as will be determined to be reasonable
and enforceable by the court or other body having jurisdiction over the matter;
and Employee agrees that this Section 9 as so amended will be valid and binding
as though any invalid or unenforceable provision had not been included herein.

    Section 10.  GENERAL.

         (a)  NOTICES.  All notices and other communications hereunder will be
    in writing or by written telecommunication, and will be deemed to have been
    duly given if delivered personally or if mailed by certified mail, return
    receipt requested or by written telecommunication, to the relevant address
    set forth below, or to such other address as the recipient of such notice
    or communication will have specified to the other party hereto in
    accordance with this Section 10(a):

<PAGE>

    If to the Company, to:                  with a copy to:

    Pentegra Dental Group, Inc.             Jackson & Walker, L.L.P.
    2999 N. 44th Street, Suite 650          901 Main Street, Suite 6000
    Phoenix, Arizona 85018                  Dallas, Texas 75202
    Attn: Chief Executive Officer              Attn: James S. Ryan, III
    Fax No.: (602) 952-0544                 Fax No.:  (214) 953-5822

    If to Employee, to:

    ------------------------
    ------------------------
    ------------------------
    ------------------------

         (b)  WITHHOLDING; NO OFFSET.  All payments required to be made by the
    Company under this Agreement to Employee will be subject to the withholding
    of such amounts, if any, relating to federal, state and local taxes as may
    be required by law.  No payment under this Agreement will be subject to
    offset or reduction attributable to any amount Employee may owe to the
    Company or any other person.

         (c)  EQUITABLE REMEDIES.  Each of the parties hereto acknowledges and
    agrees that upon any breach by Employee of his obligations under any of
    Sections 8 and 9 hereof, the Company will have no adequate remedy at law,
    and accordingly will be entitled to specific performance and other
    appropriate injunctive and equitable relief.

         (d)  SEVERABILITY.  If any provision of this Agreement is held to be
    illegal, invalid or unenforceable, such provision will be fully severable
    and this Agreement will be construed and enforced as if such illegal,
    invalid or unenforceable provision never comprised a part hereof; and the
    remaining provisions hereof will remain in full force and effect and will
    not be affected by the illegal, invalid or unenforceable provision or by
    its severance herefrom.  Furthermore, in lieu of such illegal, invalid or
    unenforceable provision, there will be added automatically as part of this
    Agreement a provision as similar in its terms to such illegal, invalid or
    unenforceable provision as may be possible and be legal, valid and
    enforceable.

         (e)  WAIVERS.  No delay or omission by either party hereto in
    exercising any right, power or privilege hereunder will impair such right,
    power or privilege, nor will any single or partial exercise of any such
    right, power or privilege preclude any further exercise thereof or the
    exercise of any other right, power or privilege.

<PAGE>

         (f)  COUNTERPARTS.  This Agreement may be executed in multiple
    counterparts, each of which will be deemed an original, and all of which
    together will constitute one and the same instrument.

         (g)  CAPTIONS.  The captions in this Agreement are for convenience of
    reference only and will not limit or otherwise affect any of the terms or
    provisions hereof.

         (h)  REFERENCE TO AGREEMENT.  Use of the words "herein," "hereof,"
    "hereto" and the like in this Agreement refer to this Agreement only as a
    whole and not to any particular subsection or provision of this Agreement,
    unless otherwise noted.

         (i)  BINDING AGREEMENT.  This Agreement will be binding upon and inure
    to the benefit of the parties and will be enforceable by the personal
    representatives and heirs of Employee and the successors of the Company. 
    If Employee dies while any amounts would still be payable to him hereunder,
    such amounts will be paid to Employee's estate.  This Agreement is not
    otherwise assignable by Employee.

         (j)  ENTIRE AGREEMENT.  This Agreement contains the entire
    understanding of the parties, supersedes all prior agreements and
    understandings relating to the subject matter hereof and may not be amended
    except by a written instrument hereafter signed by each of the parties
    hereto.

         (k)  GOVERNING LAW.  This Agreement and the performance hereof will be
    construed and governed in accordance with the laws of the State of Arizona,
    without regard to its choice of law principles.

    Section 11.    BINDING ARBITRATION.  Any controversy or claim arising out
of or relating to this Agreement, or the breach thereof, shall be settled
exclusively by arbitration in Phoenix, Arizona, in accordance with the
Commercial Arbitration Rules of the American Arbitration Association then in
effect.  Judgment upon the award rendered by the arbitrator(s) may be entered
in, and enforced by, any court having jurisdiction thereof.

    EXECUTED as of the date and year first above written.

                                       PENTEGRA DENTAL GROUP, INC.


                                       By: /s/ Gary S. Glatter
                                           -----------------------------------
                                       Its: President & CEO
                                           -----------------------------------

                                       EMPLOYEE

<PAGE>
                                       /s/ John Thayer
                                       ---------------------------------------
                                       John Thayer


<PAGE>

                                      EXHIBIT A

                                        BONUS


    Employee shall be eligible to receive an annual cash bonus in an amount
equal to up to 50% of his base salary in the event that the Company experiences
at least 20% or greater growth in earnings per share on a year to year basis
(calculated on a pro forma basis for the calendar year prior to the Company's
first fiscal year of operations).  For purposes of determining the applicable
year's earnings per share, the cash bonus payable hereunder and under all other
similar agreements between the Company and its officers shall be included prior
to such determination.

    Percentage Increase in             Bonus as a Percentage
    Earnings Per Share                 Of Annual Base Salary

    20.0-22.5%                         10%
    Over 22.5-25.0%                    20%
    Over 25.0% to 27.5%                30%
    Over 27.5% to 30.0%                40%
    Over 30.0%                         50%

    In addition, on the first anniversary of the closing of the IPO, Employee
shall receive a bonus in the amount of $25,000.00. 


<PAGE>

                                                                   EXHIBIT 10.5



                                 EMPLOYMENT AGREEMENT


    Employment Agreement (the "Agreement"), dated September 1, 1997, by and
between Pentegra Dental Group, Inc., a Delaware corporation (the "Company"), and
Sam H. Carr ("Employee").

    In consideration of the mutual premises and conditions contained herein,
the parties hereto agree as follows:

    Section 1.  EMPLOYMENT.  The Company hereby agrees to employ Employee,
and Employee hereby accepts employment by the Company, upon the terms and
subject to the conditions hereinafter set forth.

    Section 2.  DUTIES.  Employee shall serve as the Chief Financial Officer
of the Company.  Employee agrees to devote his full time and best efforts to the
performance of his duties to the Company.  Effective as of the consummation of
the IPO (as defined herein) of the Company and thereafter during the term of
this Agreement, the Company shall use its best efforts to elect Employee as a
director of the Company.  Employee acknowledges that the executive offices of
the Company will be located in Phoenix, Arizona, and that he shall relocate to
the Phoenix, Arizona area no later than January 1, 1998.  

    Section 3.  TERM.  The term of this Agreement shall be for five (5) years 
("Term"), commencing on the date hereof (the "Commencement Date").

    Section 4.  COMPENSATION AND BENEFITS.  In consideration for the services 
of the Employee hereunder, the Company will compensate Employee as follows:

         (a)  BASE SALARY.  Commencing on the Commencement Date, Employee shall
    be entitled to receive a base salary of $120,000.00 per annum or as
    increased from time to time by the Board of Directors of the Company or the
    Compensation Committee of the Board of Directors ("Compensation
    Committee").  Upon the consummation of the initial public offering of the
    Company's common stock ("IPO"), Employee shall be entitled to receive a
    base salary of $175,000.00 per annum or as increased from time to time by
    the Board of Directors of the Company or the Compensation Committee.  
    Additionally, on the date of the closing of the IPO, Employee shall be
    entitled to receive additional salary equal to $4,583 multiplied by the
    number of months between the date hereof and the closing of the IPO (or a
    pro rata amount thereof if less a full month).  The amount payable in the
    preceding sentence, less withholdings set forth in Section 12(b) hereof,
    shall be paid to Employee within thirty (30) days of the closing of the
    IPO.
  
         (b)  BONUS.  Commencing January 1, 1998, Employee shall be eligible to
    receive a bonus each year during the term of this Agreement in accordance
    with the bonus plan set forth on Exhibit A.  Such bonus shall be payable by
    the Company to Employee on or before 90 days from the end of each calendar
    year.   

<PAGE>

         (c)  BENEFITS. The Company shall grant Employee options to purchase
    shares of the Company's Common Stock at the initial public offering price
    for the Company's Common Stock on terms and in a quantity to be agreed upon
    following good faith negotiations between the Company's management team and
    the underwriters of the IPO, which terms shall be consistent with the terms
    of the stock option plans adopted by the Company pursuant to which the
    options are granted.  Such options will be for 100,000 shares and will
    vest 20% each year for five years; provided, however, that such options
    shall be ratably decreased with members of executive management of the
    Company should the underwriters of the IPO determine the necessity for a
    decrease in the outstanding options of the Company. 

         In addition, during the term of this Agreement, Employee shall be
    entitled to participate in and receive benefits under any and all employee
    benefit plans and programs which are from time to time generally made
    available to the executive employees of the Company, subject to approval
    and grant by the appropriate committee of the Board of Directors of the
    Company with respect to programs calling for such approvals or grants. 
    Additionally, Employee shall be entitled to medical, dental, disability,
    life insurance and other benefits as are generally made available to the
    executive employees of the Company.  Medical, dental and other health
    insurances shall also be provided for Employee's spouse and children.  
    Medical insurance shall be provided to Employee, his spouse and children on
    the date hereof, provided, however, that at the election of Employer,
    Employer may reimburse Employee for expenses incurred as a result of
    exercise of his continuation (COBRA) rights for such insurance and Employee
    shall make such COBRA election at the request of Employer.  Employee shall
    be entitled to three (3) weeks vacation and such other days for personal
    use as reasonably determined by the Company.

    Section 5.  EXPENSES.  It is acknowledged by the parties that Employee,
in connection with the services to be performed by him pursuant to the terms of
this Agreement, will be required to make payments for travel, entertainment of
business associates, mobile telephone and similar expenses.  The Company will
reimburse Employee for all reasonable expenses of types authorized by the
Company and incurred by Employee in the performance of his duties hereunder. 
Employee will comply with such budget limitations and approval and reporting
requirements with respect to expenses as the Company may establish from time to
time.  The Company will reimburse Employee for all reasonable duplicate living
costs incurred by Employee between the date hereof and the earlier of (i) the
relocation of Employee to Phoenix, Arizona, or (ii) January 1, 1998; provided,
however, that if the closing of the IPO shall occur after December 31, 1997, the
reimbursement of reasonable duplicate living costs shall be payable by Employer
to Employee for thirty (30) days following the closing of the IPO.

    Section 6.  COMMON STOCK.   The Company agrees to issue 100,000 shares of 
common stock of the Company to Employee on the date hereof.  The Company agrees
to provide Employee with a copy of an appraisal ("Appraisal") indicating the 
value of such shares as of the date hereof and the value of the common stock 
of the Company as of May 22, 1997.  In the event that the Internal Revenue 
Service or a reputable third-party accountant engaged by Employee and approved
by Employer determines that the issuance of such shares shall 

<PAGE>

constitute compensation to Employee for 1997, on April 15, 1998 or an earlier 
date as required to avoid tax penalty for an estimated payment, Employer 
agrees to make a non-recourse loan (the "Loan") to Employee in the amount of 
the actual tax liability incurred or reasonably determined by such 
third-party accountant, provided, however, that the amount of such loan shall 
not exceed (i) 40%, multiplied by (ii) 100,000 shares, multiplied by (a) the 
value of the Company's common stock as of the date hereof as indicated by the 
Appraisal, less (b) the value of the Company's common stock as of the May 22, 
1997 as indicated by the Appraisal.  The Loan shall be secured by the 100,000 
shares of common stock issued to Employee on the date hereof, shall be 
payable by Employee to Employer no later than one year and ninety days from 
the closing of the IPO and shall not bear interest.  Employee agrees to 
execute all stock pledge agreements, promissory notes, blank stock powers and 
other documents reasonably required by Employer to evidence the repayment of 
the Loan and to grant the security interest as set forth above.

    Section 7.  TERMINATION.  Employee's employment hereunder will commence
on the Commencement Date and continue until the end of the Term, except that the
employment of Employee hereunder will terminate earlier upon the occurrence of
the following events:

         (a)  DEATH OR DISABILITY.  Employee's employment will terminate
    immediately upon the death of Employee during the term of his employment
    hereunder or, at the option of the Company, in the event of Employee's
    disability, upon 30 days notice to Employee.  Employee will be deemed
    disabled if, as a result of Employee's incapacity due to physical or mental
    illness, Employee shall have been absent from his duties with the Company
    on a full-time basis for 120 consecutive business days and Employee shall
    not reasonably be expected to be able to resume his duties within 60 days
    of the end of such 120 day period. In the event of the termination of this
    Agreement pursuant to this subsection, Employee will not be entitled to any
    severance pay or other compensation except for any portion of his base
    salary accrued but unpaid from the last monthly payment date to the date of
    termination and expense reimbursements under Section 5 hereof for expenses
    incurred in the performance of his duties hereunder prior to termination.

         (b)  FOR CAUSE.  The Company may terminate the Employee's employment
    for "Cause" immediately upon written notice by the Company to Employee. 
    For purposes of this Agreement, a termination will be for Cause if: (i)
    Employee willfully and continuously fails to perform his duties with the
    Company (other than any such failure resulting from incapacity due to
    physical or mental illness), (ii) Employee willfully engages in gross
    misconduct materially and demonstrably injurious to the Company or (iii)
    Employee has been convicted of a felony.  In the event of the termination
    of this Agreement pursuant to this subsection, Employee will not be
    entitled to any severance pay or other compensation except for any portion
    of his base salary accrued but unpaid from the last monthly payment date to
    the date of termination and expense reimbursements under Section 5 hereof
    for expenses incurred in the performance of his duties hereunder prior to
    termination.

         (c)  BY COMPANY WITHOUT CAUSE.  The Company may terminate this
    Agreement during the Term at any time for any reason without cause.  In the
    event of the termination of this Agreement pursuant to this subsection, the
    Company will pay Employee, as 

<PAGE>

    Employee's sole remedy in connection with such termination, severance pay 
    in the amount determined by multiplying (i) Employee's monthly base salary
    at the rate in effect immediately preceding the termination of Employee's 
    employment, by (ii) in the event the Employee has relocated to the Phoenix,
    Arizona area, twelve (12) months, or in the event the Employee has not 
    relocated to the Phoenix, Arizona area, six (6) months.  The Company will
    also pay Employee the portion of his base salary accrued but unpaid from 
    the last monthly payment date to the date of termination and expense 
    reimbursements under Section 5 hereof for expenses incurred in the 
    performance of his duties hereunder prior to termination.  The Company will
    also pay Employee the bonus due Employee under Section 4(b) hereunder 
    accrued to the date of termination, which bonus shall be payable on the 
    date for payment set forth in Section 4(b) hereof. The Company will pay the
    severance payments provided for in this subsection (other than in the 
    foregoing sentence) in a lump sum amount concurrent with Employee's 
    termination of employment.  The Company will not be entitled to offset or 
    mitigate the amount due under this subsection by any other amounts payable
    to Employee, including amounts payable or paid to Employee by third parties
    for Employee's services after the date of termination.

    Section 8.   EFFECT OF TERMINATION ON OPTIONS.  The Employee has been
granted options to purchase shares of the Company's Common Stock and may
continue to be granted such options from time to time.  The effect of the
termination of the Employee's employment on such options shall be determined by
the option plan. 

    Section 9.   CONFIDENTIAL INFORMATION.  Employee recognizes and
acknowledges that certain assets of the Company and its affiliates, including
without limitation information regarding customers, pricing policies, methods of
operation, proprietary computer programs, sales, products, profits, costs,
markets, key personnel, formulae, product applications, technical processes, and
trade secrets (hereinafter called "Confidential Information") are valuable,
special and unique assets of the Company and its affiliates.  Employee will not,
during or after his term of employment, disclose any of the Confidential
Information to any person, firm, corporation, association, or any other entity
for any reason or purpose whatsoever, directly or indirectly, except as may be
required pursuant to his employment hereunder, unless and until such
Confidential Information becomes publicly available other than as a consequence
of the breach by Employee of his confidentiality obligations hereunder.  In the
event of the termination of his employment, whether voluntary or involuntary and
whether by the Company or Employee, Employee will deliver to the Company all
documents and data pertaining to the Confidential Information and will not take
with him any documents or data of any kind or any reproductions (in whole or in
part) of any items relating to the Confidential Information.

    Section 10.  NONCOMPETITION.  Until one year after termination of
Employee's employment with the Company for any reason, whether voluntary or
involuntary, Employee will not (i) engage directly or indirectly, alone or as a
shareholder, partner, officer, director, employee or consultant of any other
business organization, in any business activities which relate to the
acquisition and consolidation of dental practices which were either conducted by
the Company at the time of Employee's termination or "Proposed to be Conducted"
(as defined herein) by the Company at the time of such termination (the
"Designated Industry"), (ii) divert to any competitor of the Company in the
Designated Industry any customer of Employee, or (iii) solicit or encourage 

<PAGE>

any officer, employee, or consultant of the Company to leave its employ for 
employment by or with any competitor of the Company in the Designated 
Industry. The parties hereto acknowledge that Employee's noncompetition 
obligations hereunder will not preclude Employee from (i) owning less than 5% 
of the common stock of any publicly traded corporation conducting business 
activities in the Designated Industry or (ii) serving as an officer, 
director, stockholder or employee of an entity engaged in the healthcare 
industry whose business operations are not competitive with those of the 
Company.  "Proposed to be Conducted", as used herein, shall mean those 
business activities which are the subject of a formal, written business plan 
approved by the Board of Directors prior to termination of Employee's 
employment and which the Company takes material action to implement within 12 
months of the termination of Employee's employment.  Employee will continue 
to be bound by the provisions of this Section 10 until their expiration and 
will not be entitled to any compensation from the Company with respect 
thereto.  If at any time the provisions of this Section 9 are determined to 
be invalid or unenforceable, by reason of being vague or unreasonable as to 
area, duration or scope of activity, this Section 10 will be considered 
divisible and will become and be immediately amended to only such area, 
duration and scope of activity as will be determined to be reasonable and 
enforceable by the court or other body having jurisdiction over the matter; 
and Employee agrees that this Section 10 as so amended will be valid and 
binding as though any invalid or unenforceable provision had not been 
included herein.

    Section 11.  INDEMNIFICATION.  The Company shall indemnify and hold
Employee harmless from all liabilities, losses, damages, actions, suits, costs
and expenses (including but not limited to, reasonable fees and disbursements of
counsel through appeal) arising from or by reason of or resulting from any
action taken by Jack N. McCrary, Ankle & Foot Centers of America, LLC, American
Medical Providers, Inc. or their successors against Employee based on Employee's
resignation from Ankle & Foot Centers of America, LLC and American Medical
Providers, Inc. or that certain letter dated September 6, 1996 between Ankle &
Foot Centers and Employee.

    Section 12.  GENERAL.

         (a)  NOTICES.  All notices and other communications hereunder will be
    in writing or by written telecommunication, and will be deemed to have been
    duly given if delivered personally or if mailed by certified mail, return
    receipt requested or by written telecommunication, to the relevant address
    set forth below, or to such other address as the recipient of such notice
    or communication will have specified to the other party hereto in
    accordance with this Section 12(a):

    If to the Company, to:                  with a copy to:

    Pentegra Dental Group, Inc.             Jackson & Walker, L.L.P.
    2999 N. 44th Street, Suite 650          901 Main Street, Suite 6000
    Phoenix, Arizona 85018                  Dallas, Texas 75202
    Attn: Chief Executive Officer           Attn: James S. Ryan, III
    Fax No.: (602) 952-0544                 Fax No.: (214) 953-5822

<PAGE>

    If to Employee, to:

    Sam H. Carr 
    14755 Kellywood 
    Houston, Texas 77079 


         (b)  WITHHOLDING; NO OFFSET.  All payments required to be made by the
    Company under this Agreement to Employee will be subject to the withholding
    of such amounts, if any, relating to federal, state and local taxes as may
    be required by law.  No payment under this Agreement will be subject to
    offset or reduction attributable to any amount Employee may owe to the
    Company or any other person.

         (c)  EQUITABLE REMEDIES.  Each of the parties hereto acknowledges and
    agrees that upon any breach by Employee of his obligations under any of
    Sections 9 and 10 hereof, the Company will have no adequate remedy at law,
    and accordingly will be entitled to specific performance and other
    appropriate injunctive and equitable relief.

         (d)  SEVERABILITY.  If any provision of this Agreement is held to be
    illegal, invalid or unenforceable, such provision will be fully severable
    and this Agreement will be construed and enforced as if such illegal,
    invalid or unenforceable provision never comprised a part hereof; and the
    remaining provisions hereof will remain in full force and effect and will
    not be affected by the illegal, invalid or unenforceable provision or by
    its severance herefrom.  Furthermore, in lieu of such illegal, invalid or
    unenforceable provision, there will be added automatically as part of this
    Agreement a provision as similar in its terms to such illegal, invalid or
    unenforceable provision as may be possible and be legal, valid and
    enforceable.

         (e)  WAIVERS.  No delay or omission by either party hereto in
    exercising any right, power or privilege hereunder will impair such right,
    power or privilege, nor will any single or partial exercise of any such
    right, power or privilege preclude any further exercise thereof or the
    exercise of any other right, power or privilege.

         (f)  COUNTERPARTS.  This Agreement may be executed in multiple
    counterparts, each of which will be deemed an original, and all of which
    together will constitute one and the same instrument.

         (g)  CAPTIONS.  The captions in this Agreement are for convenience of
    reference only and will not limit or otherwise affect any of the terms or
    provisions hereof.

         (h)  REFERENCE TO AGREEMENT.  Use of the words "herein," "hereof,"
    "hereto" and the like in this Agreement refer to this Agreement only as a
    whole and not to any particular subsection or provision of this Agreement,
    unless otherwise noted.

<PAGE>

         (i)  BINDING AGREEMENT.  This Agreement will be binding upon and inure
    to the benefit of the parties and will be enforceable by the personal
    representatives and heirs of Employee and the successors of the Company. 
    If Employee dies while any amounts would still be payable to him hereunder,
    such amounts will be paid to Employee's estate.  This Agreement is not
    otherwise assignable by Employee.

         (j)  ENTIRE AGREEMENT.  This Agreement contains the entire
    understanding of the parties, supersedes all prior agreements and
    understandings relating to the subject matter hereof and may not be amended
    except by a written instrument hereafter signed by each of the parties
    hereto.

         (k)  GOVERNING LAW.  This Agreement and the performance hereof will be
    construed and governed in accordance with the laws of the State of Arizona,
    without regard to its choice of law principles.

    Section 13.    BINDING ARBITRATION.  Any controversy or claim arising out
of or relating to this Agreement, or the breach thereof, shall be settled
exclusively by arbitration in Phoenix, Arizona, in accordance with the
Commercial Arbitration Rules of the American Arbitration Association then in
effect.  Judgment upon the award rendered by the arbitrator(s) may be entered
in, and enforced by, any court having jurisdiction thereof.

    EXECUTED as of the date and year first above written.

                                   PENTEGRA DENTAL GROUP, INC.


                                   By: /s/ Gary S. Glatter
                                      -----------------------------------------
                                       Gary S. Glatter, Chief Executive Officer

                                   EMPLOYEE


                                   /s/ Sam H. Carr
                                   --------------------------------------------
                                   Sam H. Carr

<PAGE>

                                      EXHIBIT A

                                        BONUS


    Employee shall be eligible to receive an annual cash bonus in an amount
equal to up to 50% of his base salary in the event that the Company experiences
at least 20% or greater growth in earnings per share on a year to year basis
(calculated on a pro forma basis for the calendar year prior to the Company's
first fiscal year of operations).  For purposes of determining the applicable
year's earnings per share, the cash bonus payable hereunder and under all other
similar agreements between the Company and its officers shall be included prior
to such determination.

    Percentage Increase in             Bonus as a Percentage
    Earnings Per Share                 Of Annual Base Salary

    20.0-22.5%                         10%
    Over 22.5-25.0%                    20%
    Over 25.0% to 27.5%                30%
    Over 27.5% to 30.0%                40%
    Over 30.0%                         50%

<PAGE>

                          ADDENDUM TO EMPLOYMENT AGREEMENT 

    This Addendum to Employment Agreement shall be made a part of the
Employment Agreement dated September 1, 1997, between Pentegra Dental Group,
Inc. and Sam H. Carr. 

    Upon relocation of the Employee to Phoenix, Arizona, Employee shall be
entitled to receive reimbursement of the moving/relocation expenses set forth
below: 

    The Company will reimburse the Employee for all reasonable, out-of-pocket
and adequately documented moving expenses.  The term "reasonable, out-of-pocket
and adequately documented moving expenses incurred by Employee" shall include
the following:

    1.   Expenses incurred by Employee in connection with the sale of
Employee's present principal residence, such as real estate commissions and
closing costs, payable in connection with such sale but not including an equity
loss on the sale of such residence;

    2.   Expenses in the form of closing costs, but excluding prepayments and
mortgage discount points, incurred by Employee in connection with the purchase
by Employee of a new permanent principal residence in the area where the
Employee is being asked to relocate;

    3.   Expenses incurred by Employee for the packing and moving of usual and
customary personal property and automobiles of Employee located in the present
principal residence to the Employee's new residence;

    4.   Expenses incurred by Employee for up to two (2) trips to the
relocation area, of up to three (3) days and nights, for Employee and Employee's
spouse in connection with Employee's efforts to locate a new permanent residence
(such expenses to include airfare, hotel and automobile rental).

    5.   Cash reasonably calculated by the Company to negate adverse income tax
consequences to Employee of the foregoing reimbursement. 


<PAGE>

                                                                   EXHIBIT 10.6



                             EMPLOYMENT AGREEMENT

    Employment Agreement (the "Agreement"), dated July 12, 1997, by and 
between Pentegra Dental Group, Inc., a Delaware corporation (the "Company"), 
and James Dunn, Jr. ("Employee").

    In consideration of the mutual premises and conditions contained herein, 
the parties hereto agree as follows:

    Section 1.     EMPLOYMENT.  The Company hereby agrees to employ Employee, 
and Employee hereby accepts employment by the Company, upon the terms and 
subject to the conditions hereinafter set forth.

    Section 2.     DUTIES.  Employee shall serve as the Chief Development 
Officer of the Company.  Employee agrees to devote his full time and best 
efforts to the performance of his duties to the Company.  Employee 
acknowledges that the executive offices of the Company will be located in 
Phoenix, Arizona. 

    Section 3.     TERM.  Except as otherwise provided in Section 6 hereof, 
the term of this Agreement shall be for five (5) years ("Term"), commencing 
on the date the initial public offering of the Company's common stock ("IPO") 
is consummated (the "Commencement Date").
  
    Section 4.     COMPENSATION AND BENEFITS.  In consideration for the 
services of the Employee hereunder, the Company will compensate Employee as 
follows:

         (a)  BASE SALARY.  Commencing on the Commencement Date, Employee shall
    be entitled to receive a base salary of $125,000.00 per annum or as
    increased from time to time by the Board of Directors of the Company or the
    Compensation Committee of the Board of Directors ("Compensation Committee")
    thereof.

         (b)  BONUS.  Commencing January 1, 1998, Employee shall be eligible to
    receive a bonus each year during the term of this Agreement in accordance
    with the bonus plan set forth on Exhibit A.  Such bonus shall be payable by
    the Company to Employee on or before 90 days from the end of each calendar
    year.   

         (c)  BENEFITS. The Company shall grant Employee options to purchase
    shares of the Company's Common Stock at the initial public offering price
    for the Company's Common Stock on terms and in a quantity to be agreed upon
    following good faith negotiations between the Company's management team and
    the underwriters of the IPO, which terms shall be consistent with the terms
    of the stock option plans adopted by the Company pursuant to which the
    options are granted.   It currently is contemplated that such options will
    vest over a period of five years.  

<PAGE>

         In addition, during the term of this Agreement, Employee shall be
    entitled to participate in and receive benefits under any and all employee
    benefit plans and programs which are from time to time generally made
    available to the executive employees of the Company, subject to approval
    and grant by the appropriate committee of the Board of Directors of the
    Company with respect to programs calling for such approvals or grants. 
    Additionally, Employee shall be entitled to medical, dental, disability,
    life insurance and other benefits as are generally made available to the
    executive employees of the Company.  Medical, dental and other health
    insurances shall also be provided for Employee's spouse and children.  
    Employee shall be entitled to three (3) weeks vacation and such other days
    for personal use as reasonably determined by the Company.

    Section 5.     EXPENSES.  It is acknowledged by the parties that 
Employee, in connection with the services to be performed by him pursuant to 
the terms of this Agreement, will be required to make payments for travel, 
entertainment of business associates, mobile telephone and similar expenses.  
The Company will reimburse Employee for all reasonable expenses of types 
authorized by the Company and incurred by Employee in the performance of his 
duties hereunder. Employee will comply with such budget limitations and 
approval and reporting requirements with respect to expenses as the Company 
may establish from time to time.

    Section 6.     TERMINATION.  Employee's employment hereunder will 
commence on the Commencement Date and continue until the end of the Term, 
except that the employment of Employee hereunder will terminate earlier upon 
the occurrence of the following events:

         (a)  DEATH OR DISABILITY.  Employee's employment will terminate
    immediately upon the death of Employee during the term of his employment
    hereunder or, at the option of the Company, in the event of Employee's
    disability, upon 30 days notice to Employee.  Employee will be deemed
    disabled if, as a result of Employee's incapacity due to physical or mental
    illness, Employee shall have been absent from his duties with the Company
    on a full-time basis for 120 consecutive business days and Employee shall
    not reasonably be expected to be able to resume his duties within 60 days
    of the end of such 120 day period. In the event of the termination of this
    Agreement pursuant to this subsection, Employee will not be entitled to any
    severance pay or other compensation except for any portion of his base
    salary accrued but unpaid from the last monthly payment date to the date of
    termination and expense reimbursements under Section 5 hereof for expenses
    incurred in the performance of his duties hereunder prior to termination.

         (b)  FOR CAUSE.  The Company may terminate the Employee's employment
    for "Cause" immediately upon written notice by the Company to Employee. 
    For purposes of this Agreement, a termination will be for Cause if: (i)
    Employee willfully and continuously fails to perform his duties with the
    Company (other than any such failure resulting from incapacity due to
    physical or mental illness), (ii) Employee willfully engages in gross
    misconduct materially and demonstrably injurious to the Company or (iii)
    Employee has been convicted of a felony.  In the event of the termination
    of this Agreement pursuant to this 

<PAGE>

    subsection, Employee will not be entitled to any severance pay or other 
    compensation except for any portion of his base salary accrued but unpaid 
    from the last monthly payment date to the date of termination and expense 
    reimbursements under Section 5 hereof for expenses incurred in the 
    performance of his duties hereunder prior to termination.

         (c)  BY COMPANY WITHOUT CAUSE.  The Company may terminate this
    Agreement during the Term at any time for any reason without cause.  In the
    event of the termination of this Agreement pursuant to this subsection, the
    Company will pay Employee, as Employee's sole remedy in connection with
    such termination, severance pay in the amount determined by multiplying (i)
    Employee's monthly base salary at the rate in effect immediately preceding
    the termination of Employee's employment, by (ii) in the event the Employee
    has relocated to the Phoenix, Arizona area, twelve (12) months, or in the
    event the Employee has not relocated to the Phoenix, Arizona area or
    resides in the Phoenix, Arizona area on the date hereof, six (6) months.  
    The Company will also pay Employee the portion of his base salary accrued
    but unpaid from the last monthly payment date to the date of termination
    and expense reimbursements under Section 5 hereof for expenses incurred in
    the performance of his duties hereunder prior to termination.  The Company
    will also pay Employee the bonus due Employee under Section 4(a) hereunder
    accrued to the date of termination, which bonus shall be payable on the
    date for payment set forth in Section 4(a) hereof. The Company will pay the
    severance payments provided for in this subsection (other than in the
    foregoing sentence) in a lump sum amount concurrent with Employee's
    termination of employment.  The Company will not be entitled to offset or
    mitigate the amount due under this subsection by any other amounts payable
    to Employee, including amounts payable or paid to Employee by third parties
    for Employee's services after the date of termination.

    Section 7.     EFFECT OF TERMINATION ON OPTIONS.  The Employee has been 
granted options to purchase shares of the Company's Common Stock and may 
continue to be granted such options from time to time.  The effect of the 
termination of the Employee's employment on such options shall be determined 
by the option plan. 

    Section 8.     CONFIDENTIAL INFORMATION.  Employee recognizes and 
acknowledges that certain assets of the Company and its affiliates, including 
without limitation information regarding customers, pricing policies, methods 
of operation, proprietary computer programs, sales, products, profits, costs, 
markets, key personnel, formulae, product applications, technical processes, 
and trade secrets (hereinafter called "Confidential Information") are 
valuable, special and unique assets of the Company and its affiliates.  
Employee will not, during or after his term of employment, disclose any of 
the Confidential Information to any person, firm, corporation, association, 
or any other entity for any reason or purpose whatsoever, directly or 
indirectly, except as may be required pursuant to his employment hereunder, 
unless and until such Confidential Information becomes publicly available 
other than as a consequence of the breach by Employee of his confidentiality 
obligations hereunder.  In the event of the termination of his employment, 
whether voluntary or involuntary and whether by the Company or Employee, 
Employee will deliver to the Company all documents and data pertaining 

<PAGE>

to the Confidential Information and will not take with him any documents or 
data of any kind or any reproductions (in whole or in part) of any items 
relating to the Confidential Information.

    Section 9.     NONCOMPETITION.  Until one year after termination of 
Employee's employment with the Company for any reason, whether voluntary or 
involuntary, Employee will not (i) engage directly or indirectly, alone or as 
a shareholder, partner, officer, director, employee or consultant of any 
other business organization, in any business activities which relate to the 
acquisition and consolidation of dental practices which were either conducted 
by the Company at the time of Employee's termination or "Proposed to be 
Conducted" (as defined herein) by the Company at the time of such termination 
(the "Designated Industry"), (ii) divert to any competitor of the Company in 
the Designated Industry any customer of Employee, or (iii) solicit or 
encourage any officer, employee, or consultant of the Company to leave its 
employ for employment by or with any competitor of the Company in the 
Designated Industry. The parties hereto acknowledge that Employee's 
noncompetition obligations hereunder will not preclude Employee from (i) 
owning less than 5% of the common stock of any publicly traded corporation 
conducting business activities in the Designated Industry or (ii) serving as 
an officer, director, stockholder or employee of an entity engaged in the 
healthcare industry whose business operations are not competitive with those 
of the Company.  "Proposed to be Conducted", as used herein, shall mean those 
business activities which are the subject of a formal, written business plan 
approved by the Board of Directors prior to termination of Employee's 
employment and which the Company takes material action to implement within 12 
months of the termination of Employee's employment.  Employee will continue 
to be bound by the provisions of this Section 9 until their expiration and 
will not be entitled to any compensation from the Company with respect 
thereto.  If at any time the provisions of this Section 9 are determined to 
be invalid or unenforceable, by reason of being vague or unreasonable as to 
area, duration or scope of activity, this Section 9 will be considered 
divisible and will become and be immediately amended to only such area, 
duration and scope of activity as will be determined to be reasonable and 
enforceable by the court or other body having jurisdiction over the matter; 
and Employee agrees that this Section 9 as so amended will be valid and 
binding as though any invalid or unenforceable provision had not been 
included herein.

    Section 10.    GENERAL.

         (a)  NOTICES.  All notices and other communications hereunder will be
    in writing or by written telecommunication, and will be deemed to have been
    duly given if delivered personally or if mailed by certified mail, return
    receipt requested or by written telecommunication, to the relevant address
    set forth below, or to such other address as the recipient of such notice
    or communication will have specified to the other party hereto in
    accordance with this Section 10(a):

<PAGE>

    If to the Company, to:                  with a copy to:

    Pentegra Dental Group, Inc.             Jackson & Walker, L.L.P.
    2999 N. 44th Street, Suite 650          901 Main Street, Suite 6000
    Phoenix, Arizona 85018                  Dallas, Texas  75202
    Attn: Chief Executive Officer           Attn: James S. Ryan, III
    Fax No.: (602) 952-0544                 Fax No.:  (214) 953-5822

    If to Employee, to:

    ------------------------
    ------------------------
    ------------------------
    ------------------------

         (b)  WITHHOLDING; NO OFFSET.  All payments required to be made by the
    Company under this Agreement to Employee will be subject to the withholding
    of such amounts, if any, relating to federal, state and local taxes as may
    be required by law.  No payment under this Agreement will be subject to
    offset or reduction attributable to any amount Employee may owe to the
    Company or any other person.

         (c)  EQUITABLE REMEDIES.  Each of the parties hereto acknowledges and
    agrees that upon any breach by Employee of his obligations under any of
    Sections 8 and 9 hereof, the Company will have no adequate remedy at law,
    and accordingly will be entitled to specific performance and other
    appropriate injunctive and equitable relief.

         (d)  SEVERABILITY.  If any provision of this Agreement is held to be
    illegal, invalid or unenforceable, such provision will be fully severable
    and this Agreement will be construed and enforced as if such illegal,
    invalid or unenforceable provision never comprised a part hereof; and the
    remaining provisions hereof will remain in full force and effect and will
    not be affected by the illegal, invalid or unenforceable provision or by
    its severance herefrom.  Furthermore, in lieu of such illegal, invalid or
    unenforceable provision, there will be added automatically as part of this
    Agreement a provision as similar in its terms to such illegal, invalid or
    unenforceable provision as may be possible and be legal, valid and
    enforceable.

         (e)  WAIVERS.  No delay or omission by either party hereto in
    exercising any right, power or privilege hereunder will impair such right,
    power or privilege, nor will any single or partial exercise of any such
    right, power or privilege preclude any further exercise thereof or the
    exercise of any other right, power or privilege.

<PAGE>

         (f)  COUNTERPARTS.  This Agreement may be executed in multiple
    counterparts, each of which will be deemed an original, and all of which
    together will constitute one and the same instrument.

         (g)  CAPTIONS.  The captions in this Agreement are for convenience of
    reference only and will not limit or otherwise affect any of the terms or
    provisions hereof.

         (h)  REFERENCE TO AGREEMENT.  Use of the words "herein," "hereof,"
    "hereto" and the like in this Agreement refer to this Agreement only as a
    whole and not to any particular subsection or provision of this Agreement,
    unless otherwise noted.

         (i)  BINDING AGREEMENT.  This Agreement will be binding upon and inure
    to the benefit of the parties and will be enforceable by the personal
    representatives and heirs of Employee and the successors of the Company. 
    If Employee dies while any amounts would still be payable to him hereunder,
    such amounts will be paid to Employee's estate.  This Agreement is not
    otherwise assignable by Employee.

         (j)  ENTIRE AGREEMENT.  This Agreement contains the entire
    understanding of the parties, supersedes all prior agreements and
    understandings relating to the subject matter hereof and may not be amended
    except by a written instrument hereafter signed by each of the parties
    hereto.

         (k)  GOVERNING LAW.  This Agreement and the performance hereof will be
    construed and governed in accordance with the laws of the State of Arizona,
    without regard to its choice of law principles.

    Section 11.    BINDING ARBITRATION.  Any controversy or claim arising out 
of or relating to this Agreement, or the breach thereof, shall be settled 
exclusively by arbitration in Phoenix, Arizona, in accordance with the 
Commercial Arbitration Rules of the American Arbitration Association then in 
effect.  Judgment upon the award rendered by the arbitrator(s) may be entered 
in, and enforced by, any court having jurisdiction thereof.

    EXECUTED as of the date and year first above written.

                             PENTEGRA DENTAL GROUP, INC.


                             By:  /s/ Gary S. Glatter
                                  ------------------------------------
                             Its: President & CEO
                                  ------------------------------------

                             EMPLOYEE

<PAGE>

                             /s/ James Dunn, Jr.
                             -----------------------------------------
                             James Dunn, Jr.

<PAGE>

                                  EXHIBIT A

                                    BONUS


    Employee shall be eligible to receive an annual cash bonus in an amount 
equal to up to 50% of his base salary in the event that the Company 
experiences at least 20% or greater growth in earnings per share on a year to 
year basis (calculated on a pro forma basis for the calendar year prior to 
the Company's first fiscal year of operations).  For purposes of determining 
the applicable year's earnings per share, the cash bonus payable hereunder 
and under all other similar agreements between the Company and its officers 
shall be included prior to such determination.

    Percentage Increase in             Bonus as a Percentage
    Earnings Per Share                 Of Annual Base Salary

    20.0-22.5%                         10%
    Over 22.5-25.0%                    20%
    Over 25.0% to 27.5%                30%
    Over 27.5% to 30.0%                40%
    Over 30.0%                         50%

<PAGE>

                     ADDENDUM TO EMPLOYMENT AGREEMENT 

    This Addendum to Employment Agreement shall be made a part of the 
Employment Agreement dated July 12, 1997, between Pentegra Dental Group, Inc. 
and James Dunn, Jr. 

    Upon relocation of the Employee to Phoenix, Arizona and subsequent 
relocation by Employee should the headquarters of the Company be moved from 
Phoenix, Arizona, Employee shall be entitled to receive reimbursement of the 
moving/relocation expenses set forth below: 

    The Company will reimburse the Employee for all reasonable, out-of-pocket 
and adequately documented moving expenses.  The term "reasonable, 
out-of-pocket and adequately documented moving expenses incurred by Employee" 
shall include the following:

    1.   Expenses incurred by Employee in connection with the sale of 
Employee's present principal residence, such as real estate commissions and 
closing costs, payable in connection with such sale but not including an 
equity loss on the sale of such residence;

    2.   Expenses in the form of closing costs, but excluding prepayments and 
mortgage discount points, incurred by Employee in connection with the 
purchase by Employee of a new permanent principal residence in the area where 
the Employee is being asked to relocate;

    3.   Expenses incurred by Employee for the packing and moving of usual 
and customary personal property and automobiles of Employee located in the 
present principal residence to the Employee's new residence;

    4.   Expenses incurred by Employee for up to two (2) trips to the 
relocation area, of up to three (3) days and nights, for Employee and 
Employee's spouse in connection with Employee's efforts to locate a new 
permanent residence (such expenses to include airfare, hotel and automobile 
rental).

    5.   Cash reasonably calculated by the Company to negate adverse income 
tax consequences to Employee of the foregoing reimbursement. 

    Additionally, If Employee is terminated without cause pursuant to Section 
6(c) hereof, the Company shall pay to Employee a lump sum amount (on the date 
of such termination) equal to the amounts paid by the Company to Employee as 
set forth above (i.e., if Employee receives the sum of $25,000 set forth 
above for relocation to Phoenix, Arizona and tax consequences of such 
reimbursement, upon termination of Employee pursuant to Section 6(c),  
Employee shall again receive the sum of $25,000).


<PAGE>

                                                                   EXHIBIT 10.7



                             EMPLOYMENT AGREEMENT

    Employment Agreement (the "Agreement"), dated July 12, 1997, by and 
between Pentegra Dental Group, Inc., a Delaware corporation (the "Company"), 
and Kimberlee K. Rozman ("Employee").

    In consideration of the mutual premises and conditions contained herein, 
the parties hereto agree as follows:

    Section 1.     EMPLOYMENT.  The Company hereby agrees to employ Employee, 
and Employee hereby accepts employment by the Company, upon the terms and 
subject to the conditions hereinafter set forth.

    Section 2.     DUTIES.  Employee shall serve as the General Counsel and 
Secretary of the Company.  Employee agrees to devote her full time and best 
efforts to the performance of her duties to the Company.  Employee 
acknowledges that the executive offices of the Company will be located in 
Phoenix, Arizona. 

    Section 3.     TERM.  Except as otherwise provided in Section 6 hereof, 
the term of this Agreement shall be for five (5) years ("Term"), commencing 
on the date the initial public offering of the Company's common stock ("IPO") 
is consummated (the "Commencement Date").
  
    Section 4.     COMPENSATION AND BENEFITS.  In consideration for the 
services of the Employee hereunder, the Company will compensate Employee as 
follows:

         (a)  BASE SALARY.  Commencing on the Commencement Date, Employee shall
    be entitled to receive a base salary of $125,000.00 per annum or as
    increased from time to time by the Board of Directors of the Company or the
    Compensation Committee of the Board of Directors ("Compensation Committee")
    thereof.

         (b)  BONUS.  Commencing January 1, 1998, Employee shall be eligible to
    receive a bonus each year during the term of this Agreement in accordance
    with the bonus plan set forth on Exhibit A.  Such bonus shall be payable by
    the Company to Employee on or before 90 days from the end of each calendar
    year.   

         (c)  BENEFITS. The Company shall grant Employee options to purchase
    shares of the Company's Common Stock at the initial public offering price
    for the Company's Common Stock on terms and in a quantity to be agreed upon
    following good faith negotiations between the Company's management team and
    the underwriters of the IPO, which terms shall be consistent with the terms
    of the stock option plans adopted by the Company pursuant to which the
    options are granted.   It currently is contemplated that such options will
    vest over a period of five years.  

<PAGE>

         In addition, during the term of this Agreement, Employee shall be
    entitled to participate in and receive benefits under any and all employee
    benefit plans and programs which are from time to time generally made
    available to the executive employees of the Company, subject to approval
    and grant by the appropriate committee of the Board of Directors of the
    Company with respect to programs calling for such approvals or grants. 
    Additionally, Employee shall be entitled to medical, dental, disability,
    life insurance and other benefits as are generally made available to the
    executive employees of the Company.  Medical, dental and other health
    insurances shall also be provided for Employee's spouse and children.  
    Employee shall be entitled to three (3) weeks vacation and such other days
    for personal use as reasonably determined by the Company.

    Section 5.     EXPENSES.  It is acknowledged by the parties that 
Employee, in connection with the services to be performed by him pursuant to 
the terms of this Agreement, will be required to make payments for travel, 
entertainment of business associates, mobile telephone and similar expenses.  
The Company will reimburse Employee for all reasonable expenses of types 
authorized by the Company and incurred by Employee in the performance of her 
duties hereunder. Employee will comply with such budget limitations and 
approval and reporting requirements with respect to expenses as the Company 
may establish from time to time.

    Section 6.     TERMINATION.  Employee's employment hereunder will 
commence on the Commencement Date and continue until the end of the Term, 
except that the employment of Employee hereunder will terminate earlier upon 
the occurrence of the following events:

         (a)  DEATH OR DISABILITY.  Employee's employment will terminate
    immediately upon the death of Employee during the term of her employment
    hereunder or, at the option of the Company, in the event of Employee's
    disability, upon 30 days notice to Employee.  Employee will be deemed
    disabled if, as a result of Employee's incapacity due to physical or mental
    illness, Employee shall have been absent from her duties with the Company
    on a full-time basis for 120 consecutive business days and Employee shall
    not reasonably be expected to be able to resume her duties within 60 days
    of the end of such 120 day period. In the event of the termination of this
    Agreement pursuant to this subsection, Employee will not be entitled to any
    severance pay or other compensation except for any portion of her base
    salary accrued but unpaid from the last monthly payment date to the date of
    termination and expense reimbursements under Section 5 hereof for expenses
    incurred in the performance of her duties hereunder prior to termination.

         (b)  FOR CAUSE.  The Company may terminate the Employee's employment
    for "Cause" immediately upon written notice by the Company to Employee. 
    For purposes of this Agreement, a termination will be for Cause if: (i)
    Employee willfully and continuously fails to perform her duties with the
    Company (other than any such failure resulting from incapacity due to
    physical or mental illness), (ii) Employee willfully engages in gross
    misconduct materially and demonstrably injurious to the Company or (iii)
    Employee has been convicted of a felony.  In the event of the termination
    of this Agreement pursuant to this 

<PAGE>

    subsection, Employee will not be entitled to any severance pay or other 
    compensation except for any portion of her base salary accrued but unpaid 
    from the last monthly payment date to the date of termination and expense 
    reimbursements under Section 5 hereof for expenses incurred in the 
    performance of her duties hereunder prior to termination.

         (c)  BY COMPANY WITHOUT CAUSE.  The Company may terminate this
    Agreement during the Term at any time for any reason without cause.  In the
    event of the termination of this Agreement pursuant to this subsection, the
    Company will pay Employee, as Employee's sole remedy in connection with
    such termination, severance pay in the amount determined by multiplying (i)
    Employee's monthly base salary at the rate in effect immediately preceding
    the termination of Employee's employment, by (ii) in the event the Employee
    has relocated to the Phoenix, Arizona area, twelve (12) months, or in the
    event the Employee has not relocated to the Phoenix, Arizona area or
    resides in the Phoenix, Arizona area on the date hereof, six (6) months.  
    The Company will also pay Employee the portion of her base salary accrued
    but unpaid from the last monthly payment date to the date of termination
    and expense reimbursements under Section 5 hereof for expenses incurred in
    the performance of her duties hereunder prior to termination.  The Company
    will also pay Employee the bonus due Employee under Section 4(a) hereunder
    accrued to the date of termination, which bonus shall be payable on the
    date for payment set forth in Section 4(a) hereof.  The Company will pay
    the severance payments provided for in this subsection (other than in the
    foregoing sentence) in a lump sum amount concurrent with Employee's
    termination of employment.  The Company will not be entitled to offset or
    mitigate the amount due under this subsection by any other amounts payable
    to Employee, including amounts payable or paid to Employee by third parties
    for Employee's services after the date of termination.

    Section 7.     EFFECT OF TERMINATION ON OPTIONS.  The Employee has been 
granted options to purchase shares of the Company's Common Stock and may 
continue to be granted such options from time to time.  The effect of the 
termination of the Employee's employment on such options shall be determined 
by the option plan. 

    Section 8.     CONFIDENTIAL INFORMATION.  Employee recognizes and 
acknowledges that certain assets of the Company and its affiliates, including 
without limitation information regarding customers, pricing policies, methods 
of operation, proprietary computer programs, sales, products, profits, costs, 
markets, key personnel, formulae, product applications, technical processes, 
and trade secrets (hereinafter called "Confidential Information") are 
valuable, special and unique assets of the Company and its affiliates.  
Employee will not, during or after her term of employment, disclose any of 
the Confidential Information to any person, firm, corporation, association, 
or any other entity for any reason or purpose whatsoever, directly or 
indirectly, except as may be required pursuant to her employment hereunder, 
unless and until such Confidential Information becomes publicly available 
other than as a consequence of the breach by Employee of her confidentiality 
obligations hereunder.  In the event of the termination of her employment, 
whether voluntary or involuntary and whether by the Company or Employee, 
Employee will deliver to the Company all documents and data 

<PAGE>

pertaining to the Confidential Information and will not take with him any 
documents or data of any kind or any reproductions (in whole or in part) of 
any items relating to the Confidential Information.

    Section 9.     NONCOMPETITION.  Until one year after termination of 
Employee's employment with the Company for any reason, whether voluntary or 
involuntary, Employee will not (i) engage directly or indirectly, alone or as 
a shareholder, partner, officer, director, employee or consultant of any 
other business organization, in any business activities which relate to the 
acquisition and consolidation of dental practices which were either conducted 
by the Company at the time of Employee's termination or "Proposed to be 
Conducted" (as defined herein) by the Company at the time of such termination 
(the "Designated Industry"), (ii) divert to any competitor of the Company in 
the Designated Industry any customer of Employee, or (iii) solicit or 
encourage any officer, employee, or consultant of the Company to leave its 
employ for employment by or with any competitor of the Company in the 
Designated Industry. The parties hereto acknowledge that Employee's 
noncompetition obligations hereunder will not preclude Employee from (i) 
owning less than 5% of the common stock of any publicly traded corporation 
conducting business activities in the Designated Industry or (ii) serving as 
an officer, director, stockholder or employee of an entity engaged in the 
healthcare industry whose business operations are not competitive with those 
of the Company.  "Proposed to be Conducted", as used herein, shall mean those 
business activities which are the subject of a formal, written business plan 
approved by the Board of Directors prior to termination of Employee's 
employment and which the Company takes material action to implement within 12 
months of the termination of Employee's employment.  Employee will continue 
to be bound by the provisions of this Section 9 until their expiration and 
will not be entitled to any compensation from the Company with respect 
thereto.  If at any time the provisions of this Section 9 are determined to 
be invalid or unenforceable, by reason of being vague or unreasonable as to 
area, duration or scope of activity, this Section 9 will be considered 
divisible and will become and be immediately amended to only such area, 
duration and scope of activity as will be determined to be reasonable and 
enforceable by the court or other body having jurisdiction over the matter; 
and Employee agrees that this Section 9 as so amended will be valid and 
binding as though any invalid or unenforceable provision had not been 
included herein.

    Section 10.    GENERAL.

         (a)  NOTICES.  All notices and other communications hereunder will be
    in writing or by written telecommunication, and will be deemed to have been
    duly given if delivered personally or if mailed by certified mail, return
    receipt requested or by written telecommunication, to the relevant address
    set forth below, or to such other address as the recipient of such notice
    or communication will have specified to the other party hereto in
    accordance with this Section 10(a):

<PAGE>

    If to the Company, to:                  with a copy to:

    Pentegra Dental Group, Inc.             Jackson & Walker, L.L.P.
    2999 N. 44th Street, Suite 650          901 Main Street, Suite 6000
    Phoenix, Arizona 85018                  Dallas, Texas  75202
    Attn: Chief Executive Officer           Attn: James S. Ryan, III
    Fax No.: (602) 952-0544                 Fax No.:  (214) 953-5822

    If to Employee, to:

    Kim Rozman
    1702 Waverly Court
    Richardson, Texas 75082 

         (b)  WITHHOLDING; NO OFFSET.  All payments required to be made by the
    Company under this Agreement to Employee will be subject to the withholding
    of such amounts, if any, relating to federal, state and local taxes as may
    be required by law.  No payment under this Agreement will be subject to
    offset or reduction attributable to any amount Employee may owe to the
    Company or any other person.

         (c)  EQUITABLE REMEDIES.  Each of the parties hereto acknowledges and
    agrees that upon any breach by Employee of her obligations under any of
    Sections 8 and 9 hereof, the Company will have no adequate remedy at law,
    and accordingly will be entitled to specific performance and other
    appropriate injunctive and equitable relief.

         (d)  SEVERABILITY.  If any provision of this Agreement is held to be
    illegal, invalid or unenforceable, such provision will be fully severable
    and this Agreement will be construed and enforced as if such illegal,
    invalid or unenforceable provision never comprised a part hereof; and the
    remaining provisions hereof will remain in full force and effect and will
    not be affected by the illegal, invalid or unenforceable provision or by
    its severance herefrom.  Furthermore, in lieu of such illegal, invalid or
    unenforceable provision, there will be added automatically as part of this
    Agreement a provision as similar in its terms to such illegal, invalid or
    unenforceable provision as may be possible and be legal, valid and
    enforceable.

         (e)  WAIVERS.  No delay or omission by either party hereto in
    exercising any right, power or privilege hereunder will impair such right,
    power or privilege, nor will any single or partial exercise of any such
    right, power or privilege preclude any further exercise thereof or the
    exercise of any other right, power or privilege.

         (f)  COUNTERPARTS.  This Agreement may be executed in multiple
    counterparts, each of which will be deemed an original, and all of which
    together will constitute one and the same instrument.

<PAGE>

         (g)  CAPTIONS.  The captions in this Agreement are for convenience of
    reference only and will not limit or otherwise affect any of the terms or
    provisions hereof.

         (h)  REFERENCE TO AGREEMENT.  Use of the words "herein," "hereof,"
    "hereto" and the like in this Agreement refer to this Agreement only as a
    whole and not to any particular subsection or provision of this Agreement,
    unless otherwise noted.

         (i)  BINDING AGREEMENT.  This Agreement will be binding upon and inure
    to the benefit of the parties and will be enforceable by the personal
    representatives and heirs of Employee and the successors of the Company. 
    If Employee dies while any amounts would still be payable to him hereunder,
    such amounts will be paid to Employee's estate.  This Agreement is not
    otherwise assignable by Employee.

         (j)  ENTIRE AGREEMENT.  This Agreement contains the entire
    understanding of the parties, supersedes all prior agreements and
    understandings relating to the subject matter hereof and may not be amended
    except by a written instrument hereafter signed by each of the parties
    hereto.

         (k)  GOVERNING LAW.  This Agreement and the performance hereof will be
    construed and governed in accordance with the laws of the State of Arizona,
    without regard to its choice of law principles.

    Section 11.    BINDING ARBITRATION.  Any controversy or claim arising out 
of or relating to this Agreement, or the breach thereof, shall be settled 
exclusively by arbitration in Phoenix, Arizona, in accordance with the 
Commercial Arbitration Rules of the American Arbitration Association then in 
effect.  Judgment upon the award rendered by the arbitrator(s) may be entered 
in, and enforced by, any court having jurisdiction thereof.

    EXECUTED as of the date and year first above written.

                             PENTEGRA DENTAL GROUP, INC.


                             By:  /s/ Gary S. Glatter
                                  ------------------------------------
                             Its: President & CEO
                                  ------------------------------------

                             EMPLOYEE


                             /s/ Kimberlee K. Rozman
                             ------------------------------------------
                             Kimberlee K. Rozman

<PAGE>

                                  EXHIBIT A

                                    BONUS

    Employee shall be eligible to receive an annual cash bonus in an amount 
equal to up to 50% of her base salary in the event that the Company 
experiences at least 20% or greater growth in earnings per share on a year to 
year basis (calculated on a pro forma basis for the calendar year prior to 
the Company's first fiscal year of operations).  For purposes of determining 
the applicable year's earnings per share, the cash bonus payable hereunder 
and under all other similar agreements between the Company and its officers 
shall be included prior to such determination.

    Percentage Increase in             Bonus as a Percentage
    Earnings Per Share                 Of Annual Base Salary

    20.0-22.5%                         10%
    Over 22.5-25.0%                    20%
    Over 25.0% to 27.5%                30%
    Over 27.5% to 30.0%                40%
    Over 30.0%                         50%


<PAGE>

                      ADDENDUM TO EMPLOYMENT AGREEMENT 

    This Addendum to Employment Agreement shall be made a part of the 
Employment Agreement dated July 12, 1997 between Pentegra Dental Group, Inc. 
and Kimberlee K. Rozman. 

    Upon relocation of the Employee to Phoenix, Arizona and subsequent 
relocation by Employee should the headquarters of the Company be moved from 
Phoenix, Arizona, Employee shall be entitled to receive reimbursement of the 
moving/relocation expenses set forth below: 

    The Company will reimburse the Employee for all reasonable, out-of-pocket 
and adequately documented moving expenses.  The term "reasonable, 
out-of-pocket and adequately documented moving expenses incurred by Employee" 
shall include the following:

    1.   Expenses incurred by Employee in connection with the sale of 
Employee's present principal residence, such as real estate commissions and 
closing costs, payable in connection with such sale but not including an 
equity loss on the sale of such residence;

    2.   Expenses in the form of closing costs, but excluding prepayments and 
mortgage discount points, incurred by Employee in connection with the 
purchase by Employee of a new permanent principal residence in the area where 
the Employee is being asked to relocate;

    3.   Expenses incurred by Employee for the packing and moving of usual 
and customary personal property and automobiles of Employee located in the 
present principal residence to the Employee's new residence;

    4.   Expenses incurred by Employee for up to two (2) trips to the 
relocation area, of up to three (3) days and nights, for Employee and 
Employee's spouse in connection with Employee's efforts to locate a new 
permanent residence (such expenses to include airfare, hotel and automobile 
rental).

    5.   Cash reasonably calculated by the Company to negate adverse income 
tax consequences to Employee of the foregoing reimbursement. 

    Additionally, If Employee is terminated without cause pursuant to Section 
6(c) hereof, the Company shall pay to Employee a lump sum amount (on the date 
of such termination) equal to the amounts paid by the Company to Employee as 
set forth above (i.e., if Employee receives the sum of $25,000 set forth 
above for relocation to Phoenix, Arizona and tax consequences of such 
reimbursement, upon termination of Employee pursuant to Section 6(c),  
Employee shall again receive the sum of $25,000).


<PAGE>

                                                                   EXHIBIT 10.8


- -------------------------------------------------------------------------------


                              FORM OF SERVICE AGREEMENT

                 DATED AS OF THE ____  DAY OF ________________, 1997


                                    BY AND BETWEEN

                            PENTEGRA DENTAL GROUP, INC., 

                                         AND 

                                    ______________


- -------------------------------------------------------------------------------

<PAGE>

                                 TABLE OF CONTENTS
<TABLE>
<S>                                                                                 <C>
ARTICLE I. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1
    Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1
         Section 1.1    Definitions. . . . . . . . . . . . . . . . . . . . . . . .  1
                                                                                    
ARTICLE II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
    Relationship of the Parties. . . . . . . . . . . . . . . . . . . . . . . . . .  5
                                                                                    
ARTICLE III. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
    Services to be Provided by Pentegra. . . . . . . . . . . . . . . . . . . . . .  5
         Section 3.1    Overall Function . . . . . . . . . . . . . . . . . . . . .  5
         Section 3.2    General Administrative Services. . . . . . . . . . . . . .  5
         Section 3.3    Facilities.  . . . . . . . . . . . . . . . . . . . . . . .  6
         Section 3.4    Acquisition and Assistance.. . . . . . . . . . . . . . . .  7
         Section 3.5    Inventory and Supplies . . . . . . . . . . . . . . . . . .  7
         Section 3.6    Advertising and Public Relations . . . . . . . . . . . . .  7
         Section 3.7    Personnel. . . . . . . . . . . . . . . . . . . . . . . . .  7
         Section 3.8    Quality Assurance. . . . . . . . . . . . . . . . . . . . .  8
         Section 3.9    Other Consulting and Advisory Services . . . . . . . . . .  8
         Section 3.10   Events Excusing Performance. . . . . . . . . . . . . . . .  8
                                                                                    
ARTICLE IV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8
    Obligations of the Practice. . . . . . . . . . . . . . . . . . . . . . . . . .  8
         Section 4.1    Employment of Practice Professional Employees and           
                         Practice Employees. . . . . . . . . . . . . . . . . . . .  8
         Section 4.2    Professional Services. . . . . . . . . . . . . . . . . . .  8
         Section 4.3    Dental Practice. . . . . . . . . . . . . . . . . . . . . .  9
         Section 4.4    Practice's Internal Matters. . . . . . . . . . . . . . . .  9
         Section 4.5    Compliance with Laws . . . . . . . . . . . . . . . . . . .  9
         Section 4.6    Ancillary Services; Mergers, Sales, etc.; Issuance of       
                         Equity Interests. . . . . . . . . . . . . . . . . . . . .  9
         Section 4.7    Premises and Personal Property . . . . . . . . . . . . . .  9
         Section 4.8    Practice Employee Benefit Plans. . . . . . . . . . . . . . 10
         Section 4.10   Subsequent Equity Owners of the Practice . . . . . . . . . 11

ARTICLE V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
    Joint Planning Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
         Section 5.1    Formation and Operation of the Joint Planning Board. . . . 11

ARTICLE VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
    Practice Covenants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
         Section 6.1    Acknowledgement of Proprietary Interest. . . . . . . . . . 12
         Section 6.2    Covenant Not-to-Divulge Confidential and Proprietary
         Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
         Section 6.3    Return of Materials to Pentegra. . . . . . . . . . . . . . 12
         Section 6.4    Prohibition on Disparaging Remarks . . . . . . . . . . . . 12
         Section 6.5    Restrictive Covenants of Dentists and Practice
                         Professional Employees. . . . . . . . . . . . . . . . . . 12
         Section 6.6    Enforcement of  Employment Agreements. . . . . . . . . . . 13
         Section 6.7    Remedies . . . . . . . . . . . . . . . . . . . . . . . . . 13

ARTICLE VII. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
    Financial and Security Arrangements. . . . . . . . . . . . . . . . . . . . . . 13
         Section 7.1    Compensation . . . . . . . . . . . . . . . . . . . . . . . 13
         Section 7.2    Capital Made Available by Pentegra . . . . . . . . . . . . 14

<PAGE>

         Section 7.3    Security Agreement . . . . . . . . . . . . . . . . . . . . 14

ARTICLE VIII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
    Insurance and Indemnity. . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
         Section 8.1    Insurance to be Maintained by the Practice . . . . . . . . 14
         Section 8.2    Insurance to be Maintained by Pentegra . . . . . . . . . . 14
         Section 8.3    Continuing Liability Insurance Coverage. . . . . . . . . . 14
         Section 8.4    Additional Insureds. . . . . . . . . . . . . . . . . . . . 15
         Section 8.5    Indemnification. . . . . . . . . . . . . . . . . . . . . . 15

ARTICLE IX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
    Term and Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
         Section 9.1    Term of Agreement. . . . . . . . . . . . . . . . . . . . . 15
         Section 9.2    Extended Term. . . . . . . . . . . . . . . . . . . . . . . 15
         Section 9.3    Termination by the Practice. . . . . . . . . . . . . . . . 15
         Section 9.4    Termination by Pentegra. . . . . . . . . . . . . . . . . . 16
         Section 9.5    Effective Date of Termination. . . . . . . . . . . . . . . 16
         Section 9.6    Purchase of Assets . . . . . . . . . . . . . . . . . . . . 16
         Section 9.7    Terms of Purchase. . . . . . . . . . . . . . . . . . . . . 17
         Section 9.8    Exception to Purchase. . . . . . . . . . . . . . . . . . . 17
         Section 9.9    Effect Upon Termination. . . . . . . . . . . . . . . . . . 18

ARTICLE X. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
    General Provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
         Section 10.1   Assignment . . . . . . . . . . . . . . . . . . . . . . . . 18
         Section 10.2   Amendments . . . . . . . . . . . . . . . . . . . . . . . . 18
         Section 10.3   Waiver of Provisions . . . . . . . . . . . . . . . . . . . 18
         Section 10.4   Additional Documents . . . . . . . . . . . . . . . . . . . 18
         Section 10.5   Attorneys' Fees. . . . . . . . . . . . . . . . . . . . . . 19
         Section 10.6   Contract Modifications for Prospective Legal Events. . . . 19
         Section 10.7   Offset . . . . . . . . . . . . . . . . . . . . . . . . . . 19
         Section 10.8   Parties In Interest; No Third Party Beneficiaries. . . . . 19
         Section 10.9   Entire Agreement . . . . . . . . . . . . . . . . . . . . . 19
         Section 10.10  Severability . . . . . . . . . . . . . . . . . . . . . . . 19
         Section 10.11  Governing Law. . . . . . . . . . . . . . . . . . . . . . . 19
         Section 10.12  No Waiver; Remedies Cumulative . . . . . . . . . . . . . . 19
         Section 10.13  Language Construction. . . . . . . . . . . . . . . . . . . 20
         Section 10.14  Communications . . . . . . . . . . . . . . . . . . . . . . 20
         Section 10.15  Captions . . . . . . . . . . . . . . . . . . . . . . . . . 20
         Section 10.16  Gender and Number. . . . . . . . . . . . . . . . . . . . . 20
         Section 10.17  Reference to Agreement . . . . . . . . . . . . . . . . . . 20
         Section 10.18  Notice . . . . . . . . . . . . . . . . . . . . . . . . . . 20
         Section 10.19  Counterparts . . . . . . . . . . . . . . . . . . . . . . . 21
         Section 10.20  Defined Terms. . . . . . . . . . . . . . . . . . . . . . . 21
         Section 10.21  Arbitration. . . . . . . . . . . . . . . . . . . . . . . . 21
         
</TABLE>
                                       -ii-
<PAGE>

LIST OF EXHIBITS

    Exhibit 1.1(h)(vi)  -    Excluded Practice Expenses
    Exhibit 3.3         -    Premises
    Exhibit 4.8(c)      -    Approved Retirement Plans
    Exhibit 4.10        -    Dentist Agreement
    Exhibit 7.1(b)      -    Service Fee
    Exhibit 7.3         -    Form of Security Agreement
    Exhibit 10.18       -    Addresses for Notice

                                       -iii-
<PAGE>

                                  SERVICE AGREEMENT

    This Service Agreement (this "Agreement"), dated as of __________________, 
1997, is by and between Pentegra Dental Group, Inc., a Delaware corporation 
("Pentegra"), and ________________, (the "Practice")

                                 W I T N E S S E T H:

    WHEREAS, the Practice conducts a dental practice and provides professional 
dental care and products to the general public; and

    WHEREAS, Pentegra and its Affiliates manage the non-professional functions 
of dental practices.

    NOW, THEREFORE, in consideration of the mutual covenants and agreements 
herein contained, and other good and valuable consideration, the receipt and 
adequacy of which are hereby acknowledged, and on the terms and subject to 
the conditions herein set forth, the parties hereto agree as follows:

                                      ARTICLE I

                                     DEFINITIONS

    SECTION 1.1    DEFINITIONS.  For the purposes of this Agreement, the 
following definitions shall apply:

         (a)  "Acquisition" shall mean the acquisition described in the     
    Acquisition Agreement.

         (b)   "Acquisition Agreement" shall mean the  ______________, dated 
    ________________, among _____________________________.

         (c)  "Acquisition Closing Date" shall mean the date the Acquisition is
    effective pursuant to the terms of the Acquisition Agreement.

         (d)  "Affiliate" with respect to any person shall mean a person that
    directly or indirectly through one or more intermediaries, controls, is
    controlled by or is under common control with, such person.  Pentegra and
    the Practice shall not be deemed to be an Affiliate of the other.
         
        (e)  "Code" shall mean the Internal Revenue Code of 1986, as amended.

        (f)  "Dentists" shall mean _______________________ and any holder of
    any equity interest in the Practice.

        (g)  "Employment Agreements" shall mean the employment agreements
    entered into between the Practice and each Dentist in the form set forth as
    an exhibit to the Acquisition Agreement and any employment agreements
    entered into between the Practice and Practice Professional Employees. 

       (h)   "Excluded Practice Expenses" shall mean, pursuant to GAAP applied
    on a consistent basis: 

                                       1
<PAGE>

               (i) any salaries or other distributions made to any Dentists or
         any equity holder of the Practice, whether for professional fee income
         or otherwise, and any expenses related thereto, including payroll and
         other taxes associated therewith, 

               (ii)     all costs associated with life insurance and profit
         sharing or pension benefits for any Dentist or any equity holder of
         the Practice,

              (iii)     any federal, state or local  franchise or income taxes
         applicable to the Practice or any Dentist and the preparation of tax
         returns for any Dentist,

              (iv)      legal, accounting and other costs incurred by the
         Practice or any Dentist in connection with the negotiation,
         preparation of or closing of the transactions contemplated by the
         Acquisition Agreement, this Agreement or any other document executed
         in connection herewith or therewith, 

              (v)  salaries and benefits and related payroll and other taxes of
         Practice Professional Employees not included in the Practice operating
         budget or not otherwise agreed to by Pentegra in the manner set forth
         in SECTION 5.1(b), and 

              (vi) any other expenses specifically included in "Excluded
         Practice Expenses" in this Agreement and the expenses set forth on
         EXHIBIT 1.1(h)(vi).

         (i)   "Fair Market Value" shall mean the fair market value as agreed to
    by the Practice and Pentegra, or if the parties cannot agree to such value
    by ninety (90) days prior to the Purchase Closing, fair market value as
    determined by an Independent Financial Expert selected by Pentegra;
    provided, however, that if the Practice shall object to such determination
    within ten (10) days after being notified thereof by Pentegra, the Practice
    and Pentegra shall each select an Independent Financial Expert who shall
    select another Independent Financial Expert to determine fair market value
    and the value determined by such third party Independent Financial Expert
    shall be binding on the parties hereto.  Independent Financial Expert shall
    mean any entity regularly engaged in the business of evaluating assets of
    dental Practices and associated businesses and who is not an Affiliate of
    Pentegra, the Practice or any Dentist. 

        (j)    "GAAP" shall mean generally accepted accounting principles set
    forth in the opinions and pronouncements of the Accounting Principles Board
    of the American Institute of Certified Public Accountants and statements
    and pronouncements of the Financial Accounting Standards Board and
    Securities and Exchange Commission or in such other statements by such
    other entity or other practices and procedures as may be approved by a
    significant segment of the accounting profession, which are applicable to
    the circumstances as of the date of determination.  

        (k)    "IRS" shall mean the Internal Revenue Service.

        (l)    "Joint Planning Board" shall mean a three (3) member joint board
    established pursuant to SECTION 5.1.

        (m)    "Pentegra Common Stock" shall mean the common stock, par value
    $0.01 per share, of Pentegra. 

        (n)    "Pentegra Expenses" shall mean, pursuant to GAAP applied on a
    consistent basis: 

              (i)     Any corporate overhead charges of Pentegra and other items
         incurred by Pentegra that are not incurred specifically for the
         purpose of providing services to the Practice or are not 

                                       2

<PAGE>

         directly attributable to the Practice as reasonably determined by 
         Pentegra, including without limitation, salaries and benefits of 
         executive officers of Pentegra;

             (ii)    Any amortization of any intangible asset resulting from the
         Acquisition; 

             (iii)   Any legal and accounting expenses incurred by Pentegra in
         connection with the Acquisition; 

             (iv)    All taxes of Pentegra, including but not limited to local,
         state and federal income taxes and franchise taxes, but excluding
         local, state and federal employee taxes related to any Dentist or
         employees who provide services for the Practice, property taxes on
         assets used by the Practice or any Dentist and other taxes
         specifically included in Excluded Practice Expenses or Practice
         Expenses; and 

              (v)  Any other expenses specifically included in "Pentegra
         Expenses" in this Agreement.

         (o)  "Practice" shall include the Practice as defined in the first
    paragraph of this Agreement and all satellite locations and related
    businesses of such Practice.

         (p)   "Practice Employees" shall mean those non-dentist licensed
    individuals (such as hygenists) who are employed by or otherwise under
    contract or associated with the Practice that generate a professional
    charge, and that are required by law to be employed by the Practice. 

         (q)  "Practice Expenses" shall mean, pursuant to GAAP, all operating
    and non-operating expenses of Pentegra incurred in the operation of the
    Practice and all operating and non-operating expenses of the Practice
    incurred by the Practice in the operation of the Practice, including,
    without limitation (and other than as set forth on EXHIBIT 1.1(h)(vi)):

              (i)  Salaries, benefits and other direct costs of all employees
         of Pentegra (other than officers of Pentegra located at Pentegra's
         headquarters) who perform services directly for the Practice, and for
         those who perform services on a proportionate basis for the Practice,
         the allocated portion of their time which is spent on the Practice,
         and all salaries and benefits of Practice Employees including, without
         limitation, federal and state employee taxes and costs related to
         workers' compensation;

             (ii)  Direct costs of all employees (other than officers of
         Pentegra located at Pentegra's headquarters)  or consultants of
         Pentegra and their Affiliates engaged to provide services at or in
         connection with the Practice or who actually provide services at or in
         connection with the Practice for improved performance, such as quality
         assurance, materials management, purchasing program, charge and coding
         analysis, dentist recruitment, and business office consultation;
         provided, however, only the portion of expenses related to such
         employee or consultant, without mark-up, that is allocable to work
         performed at or for the benefit of the Practice shall be included in
         Practice Expenses; provided, however, that any third-party consultants
         shall be approved by the Practice, such approval not to be
         unreasonably withheld; 

           (iii)   The obligations of Pentegra under leases or subleases for
         assets which are leased or utilized for the benefit of the Practice; 

           (iv)    Real, personal and intangible property taxes assessed
         against Pentegra's assets which are leased or utilized for the benefit
         of the Practice, commencing on the date of this Agreement;

                                       3
<PAGE>

            (v)  All costs, fees, expenses and other disbursements incurred
         in connection with the Premises (as defined in SECTION 3.3) and the
         Personal Property (as defined in SECTION 3.3), including, without
         limitation, all costs of repairs, maintenance and improvements,
         utility expenses (i.e., telephone, electric, gas and water),
         janitorial services, refuse disposal, real or personal property lease
         cost payments and expenses, taxes and casualty, liability and other
         insurance;

           (vi)  Any tax assessed against the Practice or any Dentist by any
         state in which the Practice or any Dentist practices dentistry and any
         sales and use taxes assessed against the Practice or any Dentist
         related to Practice operations, the practice of dentistry by any
         Dentist or assessed against Pentegra related to services or property
         provided hereunder;

           (vii) Expenses related to professional meetings, seminars and dues
         and professional licensing fees of any Dentist, any Practice Employee,
         any Practice Professional Employee or related to the business of the
         Practice;

          (viii) The costs of third-party preparation of (and/or the costs of
         Pentegra as agreed to between the Practice and Pentegra for the
         preparation of) tax returns and similar matters for the Practice;

           (ix)  Salaries and benefits of Practice Professional Employees as
         agreed to by Pentegra pursuant to SECTION 5.1 hereof; 
              
           (x)   Interest expense on indebtedness incurred in connection with
         assets acquired or utilized (other than the assets acquired in the
         Acquisition) by Pentegra for the benefit of the Practice; interest
         expense on indebtedness incurred by the Practice in connection with
         Pentegra making advances or capital available to the Practice and in
         providing other services pursuant to this Agreement; book basis
         depreciation expense on any assets acquired or utilized by Pentegra 
         (other than the assets acquired in the Acquisition) for the benefit of
         the Practice, determined by applying the straight line method of
         depreciation over the useful life of the asset.

           (xi)  All expenses specifically included in "Practice Expenses" in
         this Agreement; 

           (xii)  Other expenses incurred by Pentegra in providing services
         for the direct benefit of the Practice or any Dentist or in carrying
         out its obligations under this Agreement, including without
         limitation, the Practice's pro rata share of the costs (without
         markup) of a central business office if one is established for the
         payroll and accounting functions of the Practice (other than costs
         incurred in connection with the headquarters of Pentegra); and
         
    Provided, however, that, notwithstanding anything contained herein,
    Pentegra Expenses and Excluded Practice Expenses shall not be included in
    Practice Expenses.

        (r)  "Practice Professional Employees" shall mean those individuals
    who are dentists employed by the Practice or otherwise under contract or
    associated with the Practice to provide professional dental services to
    patients of the Practice; provided, however, that the Dentists shall be
    excluded from the definition of Practice Professional Employees.

        (s)   "Revenues" for any month, shall mean, pursuant to GAAP, all fees
    and income of the Practice and the Dentists (net of Adjustments) including,
    without limitation, the fees and income as a result of professional
    services furnished to patients by Dentists, Practice Professional
    Employees, Practice Employees or employees of the Practice or any Dentist
    and other fees or income generated in their capacity as professionals,
    whether rendered in an inpatient or outpatient setting.   "Adjustments"
    shall mean any 

                                       4
<PAGE>

    adjustments for uncollectible accounts, discounts, disallowances, worker's 
    compensation, employee/dependent health care  benefit programs, professional
    courtesies and other activities to the  extent they do not generate a 
    collectible fee or offset of fee previously recorded.

                                      ARTICLE II

                             RELATIONSHIP OF THE PARTIES

    The Practice and Pentegra intend to act and perform as independent 
contractors, and the provisions hereof are not intended to create any 
partnership, joint venture, agency or employment relationship between the 
parties.  Pentegra and the Practice agree that the Practice shall retain the 
exclusive authority to direct the dental, professional, and ethical aspects 
of its dental  practice.  Pentegra shall neither exercise control over nor 
interfere with the patient relationships of the Practice or the Dentists, 
which shall be maintained strictly between the dental professionals of the 
Practice, the Dentists and their patients.  The parties hereby agree that the 
benefits to the Practice hereunder do not require, are not payment for, and 
are not in any way contingent upon the admission, referral or any other 
arrangement for the provision of any item or service offered by Pentegra or 
any of its Affiliates to any of the Practice's or Dentist's patients in any 
facility or laboratory controlled, managed or operated by Pentegra.

                                     ARTICLE III

                         SERVICES TO BE PROVIDED BY PENTEGRA

    SECTION 3.1    OVERALL FUNCTION.  Pentegra shall provide or arrange for 
the services set forth in this ARTICLE III, and the costs, fees, expenses and 
other disbursements incurred by Pentegra in connection therewith shall be 
included in Practice Expenses, except to the extent such costs, fees or 
expenses are expressly included in Excluded Practice Expenses or Pentegra 
Expenses.  Pentegra is authorized to perform its services hereunder as is 
necessary or appropriate for the efficient operation of the Practice.  The 
Practice will not act in a manner that would prevent Pentegra from performing 
its duties hereunder and will provide such information and assistance to 
Pentegra as is reasonably required by Pentegra to perform its services 
hereunder.  Pentegra shall, and shall use its best efforts to cause its 
employees to, comply with all applicable federal, state and local laws, rules 
and regulations in its provision of services hereunder.

    SECTION 3.2    GENERAL ADMINISTRATIVE SERVICES. 

         (a)  The Practice hereby engages Pentegra to serve as its exclusive
    manager of non-dental services relating to the operation and business of
    the Practice.  The Practice agrees that the purpose and intent of this
    Agreement is to relieve the Practice to the maximum extent possible of the
    administrative, accounting, purchasing, non-dentist personnel and other
    business aspects of their practices.  Pentegra agrees that the Practice,
    the Dentists and Practice Professional Employees, and only the Practice,
    the Dentists and Practice Professional Employees, will perform the dental
    functions of the Practice; provided, however, that to the extent that a
    Pentegra employee assists a Dentist, any Practice Professional Employee or
    the Practice in performing dental functions, such employee shall be subject
    to the professional direction and supervision of such Dentist, Practice
    Professional Employee or Practice and in the performance of such dental
    functions, shall not be subject to any direction or control by, or
    liability to, Pentegra, except as may be specifically authorized by
    Pentegra.  Pentegra shall have no authority, directly or indirectly, to
    perform or supervise, and shall not perform or supervise, any dental
    function.  Pentegra may, however, advise the Practice as to the
    relationship between its performance of dental functions and the overall
    administrative and business functions of its practice to the extent
    permitted by applicable law.  

                                       5
<PAGE>

         (b)  Pentegra shall, in the name of and on behalf of the Practice and
    the Dentists, bill patients, insurance companies, managed care payors,
    governmental entities and other third-party payors and collect the
    professional and ancillary fees for services rendered by the Practice, for
    services performed outside the Practice for its patients, for all other
    professional and Practice services and products and for services rendered
    by the Practice, the Dentists and Practice Employees.  The Practice hereby
    appoints Pentegra for the term of this Agreement to be its true and lawful
    attorney-in-fact, for the following purposes:  (i) to bill patients,
    insurance companies, managed care payors, government payors and other
    third-party payors in the Practice's name and on its behalf; (ii) to
    collect accounts receivable resulting from such billing in the Practice's
    name and on its behalf; (iii) to receive payments on behalf of the Practice
    from insurance companies, prepayments received from health care plans,
    government payors and all other third party payors; (iv) to take possession
    of and endorse in the name of the Practice (and/or in the name of an
    individual dentist, such payment intended for purpose of payment of a bill
    related to the Practice),  any notes, checks, money orders, insurance
    payments and other instruments received in payment of accounts receivable
    and to open, close and otherwise deal with bank accounts in the name of the
    Practice but which are managed by Pentegra; and (v) to initiate the
    institution of legal proceedings in the name of the Practice or a Practice
    Professional Employee to collect any accounts and monies owed to the
    Practice, any Dentist or a Practice Professional Employee, to enforce the
    rights of the Practice, any Dentist or any Practice Professional Employee
    as creditor under any contract or in connection with the rendering of any
    service, and to contest adjustments and denials by governmental agencies
    (or their fiscal intermediaries) as third-party payors.  The Practice may
    perform the functions or exercise the rights set forth in this SECTION
    3.2(b) only with the consent of Pentegra.   The Practice shall cooperate
    with and at the request of Pentegra shall provide reasonable assistance to
    Pentegra with the functions set forth herein.

         (c)  Pentegra shall supply to the Practice the ordinary, necessary or
    appropriate services for the efficient operation of the Practice, including
    without limitation, necessary front desk, administration of recall and
    patient scheduling systems, clerical, accounting, purchasing, payroll,
    legal, bookkeeping and computer services, information management, printing,
    postage and duplication services and transcribing services.  Pentegra shall
    prepare annual and monthly unaudited financial statements for the Practice
    containing a balance sheet and income statement, which shall be delivered
    to the Practice as soon as practicable, but no later than 45 days after the
    end of each calendar month and 120 days after the end of each calendar
    year.  Any audits to be conducted at the request of the Practice with
    respect to such financial statements shall be an Excluded Practice Expense.

         (d)  Pentegra shall maintain all files and records of the Practice
    relating to the operation and business of the Practice, including, but not
    limited to, accounting, billing, collection and customary financial records
    and patient files.  The management of all files and records shall comply
    with all applicable federal, state and local statutes and regulations, and
    all files and records shall be located so that they are readily accessible
    for patient care, consistent with ordinary records management practices. 
    The Practice shall supervise the preparation of, and direct the contents
    of, patient records, all of which shall remain confidential.  All original
    patient records shall be and remain the property of the Dentists or the
    Practice, as required by applicable law, except as provided in the Dentist
    Agreement. 

         (e)  The Joint Planning Board, in consultation with Pentegra, shall
    submit the annual operating and capital budget for the Practice to Pentegra
    at least one hundred twenty (120) days prior to the end of each fiscal
    year.   Pentegra shall review and approve, or disapprove, such budget and
    if Pentegra shall disapprove of such budget, it shall provide its reasons
    to the Practice.   The parties hereto agree to use their best efforts to
    agree to such annual operating and capital budget for the Practice no later
    than thirty (30) days prior to the end of each fiscal year.   All Non-
    Budgeted Expenses (including salaries/benefits of Practice Professional
    Employees) shall be subject to the approval of Pentegra. Non-Budgeted
    Expenses shall mean those expenses not set forth on the budget prepared by
    the Joint Planning Board and approved by Pentegra.

                                       6

<PAGE>

    SECTION 3.3    FACILITIES. 

         (a)  PREMISES. Pentegra shall make available to the Practice the
    premises that are described in EXHIBIT 3.3 attached hereto and such other
    real property leased or acquired (with the consent of the Practice, such
    consent not to be unreasonably withheld) and improvements made by Pentegra
    for the use of the Practice hereunder ("Premises"); provided, that in the
    event that Pentegra's right to use any such Premises  shall terminate,
    Pentegra shall use its best efforts to provide other suitable premises to
    be used by the Practice, which premises shall be approved by the Practice,
    such approval not to be unreasonably withheld.  Pentegra shall obtain for
    the Practice all utilities reasonably required in connection with the use
    of the Premises and shall provide for the proper cleanliness of the
    Premises, including normal janitorial services and refuse disposal.

         (b)  PERSONAL PROPERTY.  Pentegra shall provide the Practice with the
    use of the equipment, furniture, fixtures, furnishings and other personal
    property acquired by Pentegra in the Acquisition, together with such other
    equipment, furniture, fixtures, furnishings and other personal property
    acquired by Pentegra for the use of Practice pursuant to the terms hereof
    (collectively, the "Personal Property").

         (c)  DISPOSITION.   Nothing herein shall be construed as precluding
    Pentegra from selling, leasing or otherwise disposing of all or any part of
    its real property, improvements, Personal Property, tradenames, trademarks
    and other intangible property; provided that any such disposition shall not
    eliminate or diminish Pentegra's obligations hereunder or unreasonably
    interfere with the operations of the Practice. 

    SECTION 3.4    ACQUISITION AND ASSISTANCE.  In the event a decision is 
made by the Practice to employ additional dentists or acquire dental groups 
or practices, Pentegra may, in its reasonable discretion and subject to 
applicable law, assist the Practice in the identification and selection of 
dentists or dentist groups or practices that may be beneficial in the 
operation of the Practice.  In the event that a decision is made by the 
Practice to pursue the employment of selected dentists or the acquisition of 
a particular dental group or practice, Pentegra may, in its reasonable 
discretion and subject to applicable law, provide recruiting, consulting, 
negotiating and other services and may provide for legal, accounting and 
other professional advisor services in connection with such transaction.  
Nothing contained herein shall be construed to require Pentegra to provide 
any capital, funds or other assistance to the Practice  in connection with 
the employment of dentists or acquisition of dental groups or practices by 
the Practice. 

    SECTION 3.5    INVENTORY AND SUPPLIES.  Pentegra shall order and purchase 
inventory and supplies, and such other ordinary, necessary or appropriate 
materials which are requested by the Practice and which the Practice shall 
reasonably determine to be necessary in the operation of the Practice.  Such 
inventory, supplies and other materials shall be included in Practice 
Expenses at their pro rata cost  (without markup) to Pentegra.    Pentegra 
shall use its best efforts to negotiate, establish, supervise and maintain 
purchasing contracts with suppliers of dental supplies and equipment and  lab 
services for the benefit of the Practice. 

    SECTION 3.6    ADVERTISING AND PUBLIC RELATIONS.  In consultation with, 
and upon the reasonable request of, the  Practice, Pentegra shall implement 
and design (where requested) any appropriate local public relations or 
advertising program on behalf of the Practice, with appropriate emphasis on 
public awareness of the availability of services at the Practice, the cost of 
which shall be a Practice Expense.  Upon the reasonable request of the 
Practice, Pentegra shall also design and implement all national or other 
local and non-local public relations or advertising programs on behalf of the 
Practice, the cost of which shall be included in Practice Expenses.  The 
parties hereto agree that all public relations and advertising programs shall 
be conducted in compliance with applicable standards of ethics, laws and 
regulations. 

    SECTION 3.7    PERSONNEL.  Pentegra shall provide non-dentist  
professional support and administrative, clerical, secretarial, bookkeeping 
and collection personnel as reasonably necessary for the efficient conduct of 
the Practice's operations.   Pentegra shall consult with the Practice to 
determine the salaries and fringe benefits to be paid to such personnel.  
Such personnel shall be under the direction, supervision and control of 
Pentegra, with those 

                                       7

<PAGE>

personnel performing patient care services subject to the professional 
supervision of the Practice and Dentists while such personnel are performing 
such patient care services.  If the Practice is dissatisfied with the 
services of any Pentegra personnel, the Practice shall consult with Pentegra. 
 Pentegra shall in good faith determine whether the performance of that 
employee could be brought to acceptable levels through counsel and 
assistance, or whether such employee should be reassigned or terminated.  
Additionally, upon the reasonable request of the Practice (and provided that 
such expense is provided for in the Budget), Pentegra shall hire such 
non-dentist professional support and administrative staff for the Practice as 
is reasonably requested by the Practice.   All of Pentegra's obligations 
regarding staff shall be governed by the overriding principle and goal of 
providing high quality dental care.  Employee assignments shall be made to 
assure consistent and continued rendering of high quality dental support 
services and to ensure prompt availability and accessibility of individual 
dental support personnel to the Practice, Dentists and other practices for 
which Pentegra provides management services in order to develop constant, 
familiar and routine working relationships.

    SECTION 3.8    QUALITY ASSURANCE.  Subject to ARTICLE II, Pentegra shall 
assist the Practice in fulfilling its obligations to its patients to maintain 
a high quality of dental and professional services and the expenses incurred 
in connection therewith shall be Practice Expenses.

    SECTION 3.9    OTHER CONSULTING AND ADVISORY SERVICES.  Pentegra will 
provide such consulting and other advisory services as requested by the 
Practice in all areas of the Practice's or the Dentists' business functions, 
including, without limitation, financial planning, acquisition and expansion 
strategies, development of long-term business objectives and other related 
matters.  The costs and expenses of third party consultants engaged by 
Pentegra to provide such services shall be Practice Expenses.

    SECTION 3.10   EVENTS EXCUSING PERFORMANCE.  In the event of strikes, 
lock-outs, calamities, acts of God, unavailability of supplies or other 
events over which Pentegra has no control, Pentegra shall not be liable to 
the Practice for failure to perform any of the services required hereunder 
and the Practice shall not have the right to terminate this Agreement for so 
long as such events continue and for a reasonable period of time thereafter; 
provided, however, that if such events continue and Pentegra is not able to 
perform any of the services required hereunder for a period of 120 
consecutive days or more, Pentegra or Practice may terminate this Agreement 
by written notice to the other. 

                                      ARTICLE IV

                             OBLIGATIONS OF THE PRACTICE 

    SECTION 4.1    EMPLOYMENT OF PRACTICE PROFESSIONAL EMPLOYEES AND PRACTICE 
EMPLOYEES.  The Practice shall have complete control of and responsibility 
for the hiring, compensation, supervision, training, evaluation and 
termination of their Practice Professional Employees and Practice Employees, 
although at the request of the Practice, Pentegra and/or the Joint Planning 
Board (as set forth in SECTION 5.1) shall consult with the Practice with 
respect to such matters. The Practice shall conduct an appropriate and 
reasonable due diligence review in connection with the hiring of any dentist 
or the acquisition of any dental group or practice.  Although Pentegra may 
provide payroll and other related services to the Practice, the Practice 
shall be legally responsible for the payment of such Dentists' and Practice 
Professional Employees' and the Practice Employees' salaries and wages, 
payroll taxes and all other taxes now or hereafter applicable to their 
employment. Such salaries, wages, payroll taxes and other such taxes shall be 
Practice Expenses or Excluded Practice Expenses as set forth in SECTION 1.1 
hereof and nothing contained herein shall be construed otherwise. The 
Practice, the Dentists, the Practice Professional Employees and the Practice 
Employees shall not have any claim under this Agreement or otherwise against 
Pentegra for workers' compensation, unemployment compensation or Social 
Security benefits, all of which shall be the responsibility of the Practice.  
The Practice shall only employ or contract with licensed dentists or other 
persons meeting applicable credentialing guidelines established by the 
Practice and approved by the Joint Planning Board.  The Practice shall 
cooperate in the obtaining and retaining of professional liability insurance 
by ensuring that the Dentists, Practice Professional Employees and the 
Practice 

                                       8

<PAGE>

Employees, and other employees who may have malpractice exposure or 
liability, are insurable and participate in an on-going risk management 
program. 

    SECTION 4.2    PROFESSIONAL SERVICES.  The Practice shall provide 
professional services to patients in compliance at all times with ethical 
standards, laws, rules and regulations applicable to the operations of the 
Practice, the Dentists and the Practice Professional Employees.  The Practice 
shall ensure that each Dentist, Practice Employee and Practice Professional 
Employee has all required licenses, credentials, approvals or other 
certifications to perform his or her duties and services for the Practice.   
In the event that any disciplinary actions or malpractice actions are 
initiated against any Dentist or Practice Professional Employee, the Practice 
shall promptly inform Pentegra of such action and the underlying facts and 
circumstances.  The Practice shall carry out a program to monitor the quality 
of care practiced by the Dentists and at the Practice, and agree to cooperate 
with Pentegra in establishing a system of peer review within and among the 
dental practices associated with Pentegra or its Affiliates.  

    SECTION 4.3    DENTAL PRACTICE.  The Practice shall use and occupy the 
Premises exclusively for the practice of dentistry and for providing other 
related services and products. Unless otherwise approved in writing by 
Pentegra, which approval shall not be unreasonably withheld, it is expressly 
acknowledged by the Practice that the dental practice or practices conducted 
by the Practice shall be conducted solely by dentists associated with the 
Practice, and that the Practice shall not permit any other dentists or 
practitioner to use or occupy the Practice.  The Practice and the Dentists 
shall be solely and exclusively in control of all aspects of the practice of 
dentistry and the delivery of services by the Dentists or at the Practice's 
facilities.  The rendition of all professional services, including, but not 
limited to, diagnosis, treatment, therapy  and the supervision and 
preparation of dental  records shall be the sole responsibility of the 
Practice..  Notwithstanding any provision of this Agreement to the contrary, 
nothing herein shall be construed as precluding Pentegra from permitting the 
use of or from entering into agreements with other dentists or entities owned 
by other dentists similar to this Agreement, with respect to the Premises, 
Personal Property and tradenames and trademarks of Pentegra utilized by the 
Practice pursuant to this Agreement; provided any such other agreement shall 
not eliminate or diminish Pentegra's obligations hereunder or unreasonably 
interfere with the Practice's operations. 

    SECTION 4.4    PRACTICE'S INTERNAL MATTERS.  The Practice shall be 
responsible for matters involving its respective corporate governance, 
employees and similar internal matters, including, but not limited to, 
preparation and contents of such reports to regulatory and tax authorities 
governing the Practice that the Practice is required by law to provide and 
distribution of professional fee income among the Dentists or the equity 
holders of the Practice.  The legal, accounting and other professional 
services fees incurred by the Practice in connection with the internal 
matters of the Practice, the distribution of the fee income among Dentists or 
equity holders of the Practice and the personal accounting of the Practice 
and the Dentists and similar internal and personal matters (other than the 
preparation of Practice tax returns, which cost shall be a Practice Expense)  
shall be Excluded Practice Expenses.

    SECTION 4.5    COMPLIANCE WITH LAWS.  The Practice shall, and shall use 
its best efforts to cause the Dentists, the Practice Employees and the 
Practice Professional Employees, to comply with all applicable federal, state 
and local laws, rules, regulations and restrictions in the conduct of the 
Practice's business.  Without limiting the generality of the foregoing, the 
Practice shall, and shall use its best efforts to cause the Dentists, 
Practice Employees and Practice Professional Employees not to:  (a) knowingly 
and willfully make or cause to be made a false statement or representation of 
a material fact in any application for any benefit or payment; (b) knowingly 
and willfully make or cause to be made any false statement or representation 
of a material fact for use in determining rights to any benefit or payment; 
(c) fail to disclose knowledge of the occurrence of any event affecting the 
initial or continued right to any benefit or payment on its own behalf or on 
behalf of another, with the intent to fraudulently secure such benefit or 
payment; or (d) violate any applicable state or federal anti-remuneration or 
self-referral statutes, rules or regulations. 

    SECTION 4.6    ANCILLARY SERVICES; MERGERS, SALES, ETC.; ISSUANCE OF 
EQUITY INTERESTS.  The Practice agrees not to acquire, establish or commence 
the operation of any satellite location, dental office, laboratory or similar 
entity or organization after the date hereof without the prior written 
consent of Pentegra, which consent shall not be unreasonably withheld. Should 
the expansion of service or establishment of a new Practice or location be 
approved, 

                                       9

<PAGE>

Pentegra, at its option, shall have the exclusive right to provide services 
at the new Practice or the Practice, as applicable.  The Practice shall not 
enter into any agreement for the sale, lease of or other disposition of all 
or any material portion of the Practice's assets, merge or consolidate with 
any other entity or liquidate or dissolve or wind-up Practice's affairs or 
enter into any partnerships, joint ventures or sale-leaseback transactions or 
purchase or otherwise acquire (in one or a series of transactions) any part 
of the property or assets of any other person or entity without the prior 
written consent of Pentegra.  The Practice shall not issue any equity 
interests in the Practice without the prior written consent of Pentegra.

    SECTION 4.7    PREMISES AND PERSONAL PROPERTY.  The Practice shall use 
its best efforts to prevent damage, excessive wear and tear, and malfunction 
or other breakdown of the Premises and Personal Property or any part thereof. 
 The Practice shall promptly inform Pentegra in writing of any and all 
necessary replacements, repairs or maintenance to any of the Premises or 
Personal Property and any failures of equipment that they become aware of.  
The Practice shall comply with all covenants and provisions set forth in any 
leases for the Premises entered into or assumed by Pentegra and Pentegra 
agrees to provide copies of all such leases to the Practice. 

    SECTION 4.8    PRACTICE EMPLOYEE BENEFIT PLANS.

         (a)  Effective on the Acquisition Closing Date, the Practice shall
    amend the tax-qualified retirement plan(s) described on EXHIBIT  4.8(c)
    (the "Practice Plan") to provide that employees of  Pentegra who are
    classified as "leased employees" (as defined in Code Section 414(n)) of the
    Practice shall be treated as Practice employees for purposes of the
    Practice Plan to the extent required by applicable law.   The Practice and 
    Pentegra shall establish mutually agreeable procedures with respect to the
    identification of "leased employees" for purposes of the Practice Plan. 
    Such procedures shall be designed to avoid the tax disqualification of the
    Practice Plan, similar plans of  practices similarly situated, and any
    similar plan sponsored or maintained by the Pentegra from time to time
    (collectively, the "Plans").

         (b)  If the Joint Planning Board determines that the relationship
    between the Pentegra and the Practice (and other Practices similarly
    situated) constitutes an "affiliated service group" (as defined in Code
    Section 414(m)), Pentegra and the Practice shall take such actions as may
    be necessary to avoid the tax disqualification of the Plans.  Such actions
    may include the amendment, freeze, termination or merger of the Practice
    Plan.

         (c)  The Plans described on EXHIBIT  4.8(c) attached hereto are
    approved by Pentegra.  The Practice shall not enter into any new "employee
    benefit plan" (as defined in Section 3(3) of the Employee Retirement Income
    Security Act of 1974, as amended ("ERISA") without the written consent of
    Pentegra.  In addition, the Practice shall not offer any retirement
    benefits or make any material retirement payments other than under the
    Practice Plan to any stockholder of the Practice without the written
    consent of Pentegra.  Except as otherwise required by law, the Practice
    shall not materially amend, freeze, terminate or merge the Practice Plan
    without the written consent of Pentegra.  Notwithstanding anything
    contained herein to the contrary, the Practice acknowledges and agrees that
    it will not maintain a self-funded employee welfare benefit plan after the
    Acquisition Closing Date.

         (d)  Expenses incurred in connection with the Practice Plan or other
    Practice employee benefit plans, including without limitation the
    compensation of counsel, accountants, corporate trustees, and other agents
    shall be included in Practice Expenses.

         (e)  The contribution and administration expenses for all employees of
    Pentegra or the Practice other than the Dentists shall be included in the
    Practice's operating budget.  The Practice and Pentegra shall not make
    employee benefit plan contributions or payments to the Practice for their
    respective employees in excess of such budgeted amounts unless required by
    law or the terms of the Practice Plan.  Pentegra shall make contributions
    or payments with respect to the Practice Plan or other Practice employee
    benefit plans, as a 

                                       10

<PAGE>
    Practice Expense, on behalf of eligible employees of Pentegra.  The  
    Practice shall make contributions or payments with respect to the 
    Practice Plan or other Practice employee benefit plans, as a Practice 
    Expense, on behalf of eligible employees of the Practice (other than 
    Dentists, which contributions or payments shall be Excluded Practice 
    Expenses).  In the event a Practice Plan or other Practice employee benefit
    plan is terminated, Pentegra shall be responsible, as a Practice Expense,
    for any funding liabilities related to eligible Practice Professional
    Employees, designated leased employees, and other eligible Practice
    employees (other than the Dentists).

    SECTION 4.9    BANK ACCOUNTS.  The Practice agrees to establish and 
maintain a bank account for the purpose of (a) depositing Revenues, (b) 
paying Practice Expenses, (c) depositing Capital Funds, and (d) paying the 
Service Fee. The Practice shall designate a Pentegra employee as a signatory 
on such bank account.  Pentegra shall pay Practice Expenses from such account 
as those expenses become due and funds are available.  Pentegra shall also be 
authorized to withdraw the Service Fee from such account on the date due 
pursuant to SECTION 7.1(c).    During each month, the Practice shall not, and 
the Practice shall cause the Dentists not to, withdraw at any time from any 
bank accounts that contain sums constituting Revenues or Capital Funds in an 
amount constituting the Practice Expenses and Service Fee anticipated to be 
payable, pursuant to the budget or otherwise.  During each month, Pentegra 
shall not withdraw at any time from any bank accounts that contain sums 
constituting Revenues or Capital Funds an amount in excess of Practice 
Expenses and Service Fee anticipated to be payable for the then current 
month, pursuant to the budget or otherwise.  In the event of a dispute or 
objection as to the applicable Service Fee to be withdrawn from such account, 
the parties agree that the amount that is not subject to dispute or objection 
may be withdrawn as provided herein and to use their best efforts to mutually 
agree as to the remainder of the Service Fee due and payable.  If the parties 
are unable to agree as to such amount and right of withdrawal within ten 
business days, the determination of such amount and right of withdrawal shall 
be subject to arbitration as provided in SECTION 10.21 hereof.

    SECTION 4.10   SUBSEQUENT EQUITY OWNERS OF THE PRACTICE.   As a condition 
to any person or entity becoming a owner of any interest in the Practice, the 
Practice shall require that such person or entity execute a Dentist Agreement 
in the form of EXHIBIT 4.10 attached hereto, and such person or entity shall 
execute an Employment Agreement in form and substance attached as an Exhibit 
to the Acquisition Agreement. 

                                      ARTICLE V

                                 JOINT PLANNING BOARD

    SECTION 5.1    FORMATION AND OPERATION OF THE JOINT PLANNING BOARD.

         (a)  The parties hereto shall establish a Joint Planning Board which
    shall be responsible for developing long-term strategic planning objectives
    and management policies for the overall operation of the Practice and shall
    facilitate communication and interaction between Pentegra and the Practice. 
    The Joint Planning Board shall consist of three (3) members.  Pentegra
    shall designate, in its sole discretion, one (1) member of the Joint
    Planning Board.  The Practice shall designate, in its sole discretion, two
    (2) members of the Joint Planning Board.  The act of a majority of the
    members of the Joint Planning Board shall be the act of the Joint Planning
    Board.

         (b)  The Joint Planning Board shall, in addition to the
    responsibilities set forth elsewhere in this Agreement, have the authority
    to (i) develop and assist the Practice in implementing long-term strategic
    objectives, (ii) prepare proposals and make recommendations to the Board of
    Directors of Pentegra regarding capital expenditures, capital improvements
    and expansion projects on behalf of the Practice and the Dentists, (iii)
    assist and consult with Pentegra in preparation of the annual capital and
    operating budgets of the Practice, (iv) consider and make recommendations
    regarding grievances pertaining to matters not specifically addressed 

                                       11

<PAGE>

    in this Agreement if such matters are referred to it by the Practice or
    Pentegra, (v) make recommendations to the Practice regarding the number and
    type of dentists required for the efficient operation of the Practice, (vi)
    subject to the provisions contained in SECTION 4.8, make decisions and
    recommendations regarding the Practice Plan; (vii) develop and assist the
    Practice in implementing an exit strategy in the event of retirement or
    semi-retirement of a Dentist to cover issues such as securing replacement
    coverage for the Dentist and/or buyout provisions for the Dentist's
    ownership of the Practice; and (viii) make recommendations to the Practice
    regarding the salaries and benefits of Practice Professional Employees,
    which salaries and benefits shall be Practice Expenses only to the extent
    contained in the budget or otherwise approved by Pentegra.  Pentegra shall
    not unreasonably withhold consent to such salaries/benefits of Practice
    Professional Employees being included in Practice Expenses if such
    inclusion would not have a material adverse effect on the anticipated or
    historically received Service Fee.  Subject to the foregoing, decisions
    regarding hiring or firing dentists shall be made solely by the Practice. 

                                      ARTICLE VI

                                 PRACTICE COVENANTS 

    SECTION 6.1    ACKNOWLEDGEMENT OF PROPRIETARY INTEREST.  The Practice 
recognizes the proprietary interest of Pentegra and the dental practices 
managed by Pentegra (collectively, "Pentegra Group") in any Confidential and 
Proprietary Information (as hereinafter defined) of Pentegra Group. The 
Practice acknowledges and agrees that any and all Confidential and 
Proprietary Information communicated to, learned of, developed or otherwise 
acquired by the Practice during the term of this Agreement shall be the 
property of Pentegra Group.  The Practice further acknowledges and 
understands that its disclosure of any Confidential and Proprietary 
Information will result in irreparable injury and damage to Pentegra Group.  
As used herein, "Confidential and Proprietary Information" means all trade 
secrets and other confidential and/or proprietary information of Pentegra 
Group, including information derived from reports, investigations, research, 
work in progress, codes, marketing and sales programs, financial projections, 
cost summaries, pricing formula, contracts analyses, financial information, 
projections, confidential filings with any state or federal agency, and all 
other confidential concepts, methods of doing business, ideas, materials or 
information (other than the Practice's or the Dentists' patients, patient 
records or income and expense information prepared by the Practice) prepared 
or performed for, by or on behalf of Pentegra Group by its employees, 
officers, directors, agents, representatives, or consultants.

    SECTION 6.2    COVENANT NOT-TO-DIVULGE CONFIDENTIAL AND PROPRIETARY 
INFORMATION.  The Practice acknowledges and agrees that Pentegra Group is 
entitled to prevent the disclosure of Confidential and Proprietary 
Information. The Practice agrees at all times during the term of this 
Agreement and thereafter to hold in strictest confidence and not to disclose 
to any person, firm or corporation, other than to Practice Professional 
Employees and persons engaged by Pentegra to further the business of the 
Practice, and not to use except in the pursuit of the business of Pentegra 
Group, Confidential and Proprietary Information, without the prior written 
consent of Pentegra; unless (i) such information becomes known or available 
to the public generally through no wrongful act of the Practice or its 
employees, (ii) disclosure is required by law or the rule, regulation or 
order of any governmental authority under color of law, provided, that prior 
to disclosing any Confidential and Proprietary Information pursuant to this 
clause (ii), the Practice shall, if possible, give prior written notice 
thereof to Pentegra and provide Pentegra with the opportunity to contest such 
disclosure, or (iii) the Practice reasonably believes that such disclosure is 
required in connection with a lawsuit to which the Practice is a party.

    SECTION 6.3    RETURN OF MATERIALS TO PENTEGRA.  In the event of any 
termination of this Agreement for any reason whatsoever, or at any time upon 
the request of Pentegra, the Practice will promptly deliver to Pentegra all 
documents, data and other information in the Practice's possession that 
contains any Confidential and Proprietary Information.  The Practice shall 
not take or retain any documents or other information, or any reproduction or 
excerpt thereof, containing any Confidential and Proprietary Information, 
unless otherwise authorized in writing by Pentegra.

                                       12

<PAGE>

    SECTION 6.4    PROHIBITION ON DISPARAGING REMARKS.  During the term of 
this Agreement, the Practice shall, and shall cause, the Dentists, the 
Practice Professional Employees and the Practice Employees to, refrain from 
making disparaging, negative or other similar remarks concerning the Pentegra 
Group to any third party that causes substantial harm to the Pentegra Group, 
except to the extent that any such person (a) is required to make such 
remarks by applicable law or regulation or judicial or regulatory process or 
(b) makes such remarks in or in connection with any pending or threatened 
litigation or other legal proceeding.  

    SECTION 6.5    RESTRICTIVE COVENANTS OF DENTISTS AND PRACTICE 
PROFESSIONAL EMPLOYEES.  Each Employment Agreement executed between the 
Practice and Dentists and certain of the Employment Agreements executed 
between the Practice and Practice Professional Employees contain certain 
restrictive covenants pertaining to covenants not to compete with and not to 
divulge the confidential and proprietary information of Pentegra, the 
Dentists and the Practice.  During the term of this Agreement, the Practice 
shall obtain written agreements which contain restrictive covenants 
reasonably approved by Pentegra (after consultation with the Practice) from 
each Practice Professional Employee (other than Practice Employees) 
associated with the Practice after the date hereof.  During the term hereof, 
the Practice shall not amend, alter or otherwise change or terminate any 
Employment Agreement without the prior written consent of Pentegra.   
Following termination of this Agreement, the Practice shall not amend, alter 
or otherwise change any term or provision of the restrictive covenants 
contained in such Employment Agreement unless such provisions are no longer 
in force and effect pursuant to the terms of the applicable agreement at the 
time of termination of this Agreement. 

    SECTION 6.6    ENFORCEMENT OF  EMPLOYMENT AGREEMENTS.  The Practice shall 
enforce the Employment Agreements, including, without limitation, the 
restrictive covenants contained therein.  In the event that, after a request 
by Pentegra, the Practice does not pursue any remedy that may be available to 
it by reason of a breach or default of the restrictive covenants or any other 
provision of the Employment Agreements, upon the request of Pentegra, the 
Practice shall assign to Pentegra such Employment Agreements and the causes 
of action and/or other rights it may have related to such breach or default 
and shall cooperate with and provide reasonable assistance to Pentegra with 
respect thereto. The costs and expenses of the Practice and/or Pentegra in 
connection with pursuing such causes of action or other rights shall be 
Practice Expenses and any monetary recovery thereunder shall be Revenues.  
The provisions of this SECTION 6.6 shall survive termination of this 
Agreement.

    SECTION 6.7    REMEDIES.  Pentegra and the Practice acknowledge and agree 
that a remedy at law for any breach or attempted breach of the provisions of 
this ARTICLE VI shall be inadequate, and therefore, either party shall be 
entitled to specific performance and injunctive or other equitable relief in 
the event of any such breach or attempted breach, in addition to any other 
rights or remedies available to either party at law or in equity.  Each party 
hereto waives any requirement for the securing or posting of any bond in 
connection with the obtaining of any such injunctive or other equitable 
relief.  If any provision of the restrictive covenants contained in the 
Employment Agreements or this ARTICLE VI relating to the restrictive period, 
scope of activity restricted and/or the territory described therein shall be 
declared by a court of competent jurisdiction to exceed the maximum time 
period, scope of activity restricted or geographical area such court deems 
reasonable and enforceable under applicable law, the time period, scope of 
activity restricted and/or area of restriction held reasonable and 
enforceable by the court shall thereafter be the restrictive period, scope of 
activity restricted and/or the territory applicable to such provision of the 
restrictive covenants or this ARTICLE VI.  The invalidity or 
non-enforceability of any provision of the restrictive covenants or this 
ARTICLE VI in any respect shall not affect the validity or enforceability of 
the remainder of the restrictive covenants or this ARTICLE VI or of any other 
provisions of this Agreement. 

                                       13

<PAGE>

                                  ARTICLE VII

                      FINANCIAL AND SECURITY ARRANGEMENTS

    The Practice and Pentegra agree that the compensation set forth in this
ARTICLE VII is being paid to Pentegra in consideration of the services provided
and the substantial commitment and effort made by Pentegra hereunder and that
such fees have been negotiated at arms' length and are fair, reasonable and
consistent with fair market value.

    SECTION 7.1    COMPENSATION.

    (a)  PRACTICE EXPENSES.  Pentegra shall be entitled to compensation from
the Practice equal to the amount of all Practice Expenses incurred during the
term of this Agreement (determined pursuant to GAAP) (the "Practice Expenses").

    (b)  SERVICE FEE.  Pentegra shall be entitled to compensation from the
Practice equal to the amount set forth on EXHIBIT 7.1(b) attached hereto and
made a part hereof (the "Service Fee").

    (c)  PAYMENT TERMS.  The payments to be made to Pentegra under this
Agreement shall be made at the end of each month, but no later than the 15th day
after the end of each month (or the first preceeding day that is a business day
if the 15th is not a business day).  Pentegra shall be entitled to withdraw
funds from the bank account(s) of the Practice established pursuant to SECTION
4.10 to pay Pentegra for Practice Expenses and the Service Fee.  

    SECTION 7.2    CAPITAL MADE AVAILABLE BY PENTEGRA.  As necessary from time
to time and with the approval of the Practice, which shall not unreasonably be
withheld, Pentegra may acquire assets to be utilized by the Practice, loan funds
directly to the Practice or borrow funds on behalf of the Practice from outside
sources to finance capital expenditures and for working capital needs ("Capital
Funds").  All Capital Funds shall be documented in an intercompany account and
shall bear interest (i) in the case of funds loaned directly from Pentegra or in
the case of assets acquired by Pentegra to be utilized by the Practice, at
Pentegra's prevailing rate, or if none, at the prime lending rate of NationsBank
of Texas, N.A., or (ii) in the case of funds borrowed from an outside source, at
such cost from the outside source, and shall be evidenced by a promissory note
which shall provide for arms length repayment terms on substantially the same
terms that an independent third-party lender would require.  
    
    SECTION 7.3    SECURITY AGREEMENT.  In order to secure their obligations
hereunder, the Practice shall execute a Security Agreement in substantially the
form attached hereto as EXHIBIT 7.3 (the "Security Agreement"), which Security
Agreement grants a security interest in the Practice's accounts receivable (as
more fully described in the Security Agreement) to Pentegra.  In addition, the
Practice shall cooperate with Pentegra and execute all necessary documents in
connection with the pledge of such accounts receivable to Pentegra or at
Pentegra's option, its lenders.  


                                  ARTICLE VIII

                            INSURANCE AND INDEMNITY

    SECTION 8.1    INSURANCE TO BE MAINTAINED BY THE PRACTICE.  During the term
of this Agreement, the Practice shall maintain comprehensive professional
liability insurance for itself and each Dentist and Clinic Professional Employee
with such carrier as determined jointly by Pentegra and the Practice with limits
per claim and per dentist to be agreed upon by Pentegra and the Practice and a
separate limit for the Practice with such deductible as is mutually agreeable by
Pentegra and the Practice.  All malpractice premiums and deductibles related
thereto shall be included in Practice Expenses.  All costs, expenses and
liabilities incurred by the Practice, any Dentist or Pentegra in excess of the
limits of such policies shall be included in Excluded Practice Expenses.

                                      14
<PAGE>

    SECTION 8.2    INSURANCE TO BE MAINTAINED BY PENTEGRA.  During the term of
this Agreement, Pentegra will use commercially reasonable efforts to provide and
maintain, as a Practice Expense, comprehensive professional liability insurance
for all professional employees of Pentegra, and comprehensive general liability
and property insurance covering the Practice premises and operations with such
limits and coverages as may reasonably be determined to be appropriate by
Pentegra. 

    SECTION 8.3    CONTINUING LIABILITY INSURANCE COVERAGE.  The Practice shall
obtain or require the Dentists and the Practice Professional Employees to obtain
continuing liability insurance coverage under either a "tail policy" or a "prior
acts policy," with the same limits and deductibles as the insurance coverage
provided pursuant to SECTION 8.1 upon the termination of such professional's
relationship with the Practice for any reason.  In the event that neither the
Practice, the Dentists nor the Practice Professional Employee obtains such
continuing liability insurance coverage, Pentegra may do so.  The cost of such
continuing liability insurance coverage shall be included in Practice Expenses
unless such cost is borne by the Dentist or the Practice Professional Employee.

    SECTION 8.4    ADDITIONAL INSUREDS.  The Practice and Pentegra agree to use
their reasonable efforts to have each other named as an additional insured on
the other's respective professional liability insurance programs.  The
additional cost, if any, associated therewith shall be a Practice Expense.

    SECTION 8.5    INDEMNIFICATION.  The Practice shall indemnify, defend and
hold Pentegra and its officers, directors, shareholders, employees, agents and
consultants (other than such persons who are also officers, directors,
shareholders, employees, agents or consultants of the Practice) harmless, from
and against any and all liabilities, losses, damages, claims, causes of action
and expenses (including reasonable attorneys' fees), not covered by insurance
(including self-insured insurance and reserves), whenever arising or incurred,
that are caused or asserted to have been caused, directly or indirectly, by or
as a result of the performance of services or the performance of any intentional
acts, negligent acts or omissions by the Dentists, the Practice and/or their
shareholders, employees and/or subcontractors (other than Pentegra or its
employees) during the term of this Agreement or related to, resulting from or
arising out of an Pentegra employee performing a dental or related  function
under the supervision of any Dentist, Practice Professional Employee or the
Practice.  Pentegra shall indemnify, defend and hold the Practice and its
officers, shareholders, directors, employees, agents and consultants, harmless
from and against any and all liabilities, losses, damages, claims, causes of
action and expenses (including reasonable attorneys' fees), not covered by
insurance (including self-insured insurance and reserves), whenever arising or
incurred, that are caused or asserted to have been caused, directly or
indirectly, by or as a result of the performance of any intentional acts,
negligent acts or omissions by Pentegra and/or its shareholders, employees
and/or subcontractors (other than the Practice, Practice Professional Employees,
the Dentists or their employees) during the term of this Agreement.  In the
event an indemnification obligation under the preceding sentence arises as a
result of any act or omission of a person who is an officer, shareholder or
other equity holder, director, employee, agent or consultant of the Practice and
Pentegra, such person shall not be entitled to indemnification in connection
therewith and any other adjustment as is equitable shall be made to Pentegra's
indemnification obligation arising thereby.  

                                ARTICLE IX

                           TERM AND TERMINATION

    SECTION 9.1    TERM OF AGREEMENT.  This Agreement shall commence on the
date hereof and shall expire on the 40th anniversary hereof unless earlier
terminated pursuant to the terms of either SECTION 9.3 or SECTION 9.4 or
automatically extended pursuant to the terms of SECTION 9.2.

    SECTION 9.2    EXTENDED TERM.  Unless earlier terminated as provided for in
either SECTION 9.3 or SECTION 9.4, the term of this Agreement shall be
automatically extended for additional terms of five (5) years each, unless any
party delivers to the other parties, not less than twelve (12) months nor
earlier than fifteen (15) months prior to the expiration of the preceding term,
written notice of such party's intention not to extend the term of this
Agreement.

                                      15
<PAGE>

    SECTION 9.3    TERMINATION BY THE PRACTICE.  The Practice may terminate
this Agreement with respect to such party by giving written notice thereof to
Pentegra (after the giving of any required notices and the expiration of any
applicable waiting periods set forth below) upon the occurrence of any the
following events:

         (a)  Pentegra shall admit in writing its inability to generally pay
    its debts when due, apply for or consent to the appointment of a receiver,
    trustee or liquidator of all or substantially all of its assets, file a
    petition in bankruptcy or make an assignment for the benefit of creditors,
    or upon other action taken or suffered by Pentegra voluntarily or
    involuntarily, under any federal or state law for the benefit of creditors,
    except for the filing of a petition in involuntary bankruptcy against
    Pentegra which is dismissed within sixty (60) days thereafter.

         (b)  Pentegra shall default in the performance of any material duty or
    material obligation imposed upon it by this Agreement and such default
    shall continue for a period of sixty (60) days after written notice thereof
    has been given to Pentegra by the Practice, provided that the Practice may
    terminate this Agreement, if and only if, such termination shall have been
    approved by the affirmative vote of the holders of two-thirds of the
    interests of the equity holders of the Practice.

         
    SECTION 9.4    TERMINATION BY PENTEGRA.  Pentegra may terminate this
Agreement in its entirety or with respect to the Practice by giving written
notice thereof to the Practice (after the giving of any required notices and the
expiration of any applicable waiting periods set forth below) upon the
occurrence of any the following events:

         (a)  The Practice shall admit in writing its inability to generally
    pay its debts when due, apply for or consent to the appointment of a
    receiver, trustee or liquidator of all or substantially all of its assets,
    file a petition in bankruptcy or make an assignment for the benefit of
    creditors, or upon other action taken or suffered by the Practice,
    voluntarily or involuntarily, under any federal or state law for the
    benefit of debtors, except for the filing of a petition in involuntary
    bankruptcy against the Practice which is dismissed within sixty (60) days
    thereafter.
    
         (b)  The Practice shall default in the performance of any material
    duty or material obligation imposed upon it by this Agreement, and such
    default shall continue for a period of sixty (60) days after written notice
    thereof has been given to the Practice by Pentegra.

         (c)  The Practice or any Dentist (i) engages in any conduct for which
    the Practice's or any Dentist's license to practice dentistry is revoked or
    suspended or is reasonably likely to be revoked or suspended and such
    conduct has a material adverse effect on the Practice, (ii) is otherwise
    disciplined by any licensing, regulatory or professional entity or
    institution, (iii) is the subject of any restrictions or limitations by any
    governmental authority to such an extent that he, she or it cannot engage
    in the practice of dentistry. 

         (d)  The Employment Agreement executed between the Practice and the
    Dentist shall be terminated (i)  for any reason (other than the death or
    Disability of the Dentist) during the five year period beginning on the
    date hereof, or (ii) due to the breach by Dentist under the terms thereof
    following the five year period beginning on the date hereof.
    
    SECTION 9.5    EFFECTIVE DATE OF TERMINATION.  Any termination of this
Agreement shall be effective (the "Termination Date") as follows:

         (a)  Immediately upon receipt of a termination notice pursuant to
    either SECTION 9.3, SECTION 9.4 or SECTION 3.11 (a "Termination Notice");
    or

         (b)  Upon the expiration of this Agreement pursuant to SECTIONS 9.1
    and 9.2.

                                       16
<PAGE>

    SECTION 9.6    PURCHASE OF ASSETS.  Upon the termination of this Agreement,
subject to the provisions set forth below, the Practice shall have the option
to, and Pentegra shall have the option to require the Practice to:

         (a)  Purchase from Pentegra or its Affiliates, as the case may be, all
    assets, tangible and intangible, of Pentegra or its Affiliates that are
    used principally by the Practice in the conduct of its business and
    practice, other than Pentegra's or its Affiliates' accounting and financial
    records (the "Purchase Assets"), including, but not limited to, without
    duplication, (i) all equipment, furniture, fixtures, furnishings,
    inventory, supplies, improvements, additions and leasehold improvements
    utilized exclusively by the Practice, (ii) any real estate owned by
    Pentegra or its Affiliates that is occupied by or used for the benefit of
    the Practice, and (iii) all other tangible and intangible assets that would
    be set forth on a balance sheet of Pentegra or its Affiliates prepared as
    of the date of the Purchase Closing (as defined in SECTION 9.7) relating
    primarily to the Practice; and

         (b)  Assume all of Pentegra's and its Affiliates' liabilities, debt,
    payables and other obligations (including lease and other contractual
    obligations), or portions thereof, which relate directly or are directly
    attributable to the Purchase Assets (the "Practice Related Liabilities"). 

The Practice shall be able to exercise its option under this Section (unless
this Agreement is terminated pursuant to SECTION 9.4) and Pentegra shall be able
to exercise its option under this Section (unless this Agreement is terminated
pursuant to SECTION 9.3) by giving written notice thereof in the Termination
Notice, if applicable, or prior to ninety (90) days before the Termination Date
if this Agreement is terminated pursuant to SECTIONS 9.1 and 9.2.  In connection
with the purchase and sale of the Purchase Assets pursuant to SECTION 9.6,
Pentegra shall convey the Purchase Assets  free of any lien, claim or
encumbrance, other than those arising out of the Practice Related Liabilities.

    SECTION 9.7    TERMS OF PURCHASE.  The closing of the transactions
contemplated by SECTION 9.6 (the "Purchase Closing") shall occur (a) on the
Termination Date if this Agreement expires pursuant to the terms of SECTIONS 9.1
and 9.2, or (b) on a date mutually acceptable to the parties hereto that shall
be within 180 days after receipt of a Termination Notice (or such later date as
is necessary for Pentegra to obtain lessor consents to the assignment to the
Practice of leases of real and personal property to be assumed by the Practice. 
Subject to the conditions set forth below, at the Purchase Closing, Pentegra
and/or its Affiliates, as the case may be, shall transfer and assign the
Purchase Assets to the Practice and in consideration therefor, the Practice
shall (a) pay to Pentegra an amount in cash or, at the option of the Practice
(subject to the conditions set forth below), Pentegra Common Stock (valued at
the last reported sale price of Pentegra Common Stock on the exchange on which
the Pentegra Common Stock is then listed or the last quoted ask price on any
over-the-counter market through which the Pentegra Common Stock is then quoted
on the last trading day immediately preceding the Purchase Closing), or some
combination of cash and Pentegra Common Stock equal to the excess, if any, of
the Fair Market Value of the Purchase Assets as of a date agreed upon by the
parties or, if none, the date for which the Independent Financial Expert's
determination is made, over the amount of the Practice Related Liabilities (the
"Purchase Price") and (b) assume the Practice Related Liabilities.  Each party
shall execute such documents or instruments as is reasonably necessary, in the
opinion of each party and its counsel, to effect the foregoing transaction.  The
Practice shall, and shall use its best efforts to cause each shareholder of the
Practice to, execute such documents or instruments as may be necessary to cause
the Practice to assume the Practice Related Liabilities and to release Pentegra
and/or its Affiliates, as the case may be, from any liability or obligation with
respect thereto.  In the event the Practice desires to pay all or a portion of
the Purchase Price in shares of Pentegra Common Stock, such transaction shall be
subject to the satisfaction of each of the following conditions:  

         (a)  The holders of such shares of Pentegra Common Stock shall
    transfer to Pentegra good, valid and marketable title to the shares of
    Pentegra Common Stock, free and clear of all adverse claims, security
    interests, liens, claims, proxies, options, stockholders' agreements and
    encumbrances;

                                      17
<PAGE>

         (b)  The holders of such shares of Pentegra Common Stock shall make
    such representations and warranties as to title to the stock, absences of
    security interests, liens, claims, proxies, options, stockholders'
    agreements and other encumbrances and other matters as reasonably requested
    by Pentegra; and

         (c)  All other terms and conditions of any such proposed transaction
    and the effects thereof, including any legal or tax consequences, shall be
    reasonably satisfactory to Pentegra.

    SECTION 9.8    EXCEPTION TO PURCHASE.  Notwithstanding anything contained
herein to the contrary, Pentegra shall not be obligated to sell the Purchase
Assets to the Practice if the Practice is not able to pay the Purchase Price
pursuant to the terms set forth above and assume the Practice Related
Liabilities at the Purchase Closing.  In such event, the Practice shall
surrender the Purchase Assets to Pentegra as of the Termination Date.  If the
Practice fails to so surrender the Purchase Assets, Pentegra may, without
prejudice to any other remedy which it may have hereunder or otherwise, enter
the Premises and take possession of the Purchase Assets and expel or remove the
Practice and any other person who may be occupying the Premises or any part
thereof. 

    SECTION 9.9    EFFECT UPON TERMINATION.  Upon the Termination Date, this
Agreement shall terminate and shall be of no further force and effect; provided,
however:

         (a)  Upon termination of this Service Agreement pursuant to SECTION
    9.4, the Practice shall assign the Employment Agreements and the patient
    records of the Practice to Pentegra or its designee (which may be any
    person or entity designated by Pentegra in its sole discretion) and execute
    all documents requested by Pentegra to evidence such assignment.
    
         (b)  Pentegra shall use its best efforts to cooperate with the
    Practice for the appropriate transfer of management services.

         (c)  Each party hereto shall provide the other party with reasonable
    access to books and records owned by it to permit such requesting party to
    satisfy reporting and contractual obligations which may be required of it.

         (d)  Any amounts due and owing under the Capital Funds and all
    Practice Expenses and Service Fees owing and unpaid to either Pentegra or
    the Practice as of the Termination Date shall be paid promptly by the
    appropriate party.  If not paid on or before ten (10) days from the date of
    demand for such payment, such failure to pay shall be deemed to be an event
    of default hereunder and Pentegra shall be entitled to enforce the Security
    Agreement and foreclose the collateral referenced therein.

         (e)  Any and all covenants and obligations of either party hereto
    which by their terms or by reasonable implication are to be performed, in
    whole or in part, after the termination of this Agreement, shall survive
    such termination, including, without limitation, the obligations of the
    parties pursuant to the following SECTIONS: 6.1, 6.2, 6.5, 6.6, 6.7, 8.5,
    9.6, ARTICLE VII and the applicable provisions of ARTICLE X; provided,
    however, that Sections 6.5 and 6.6 hereof shall not survive termination of
    this Agreement pursuant to SECTION 9.3 hereof or termination of this
    Agreement pursuant to mutual consent of the parties hereto.


                                   ARTICLE X

                               GENERAL PROVISIONS

    SECTION 10.1   ASSIGNMENT.  Pentegra shall have the right to assign its
rights hereunder to any lender of Pentegra, any Affiliate of Pentegra or any
successor to all or substantially all of the assets of Pentegra; provided that
such assignee shall agree to be bound by the terms and conditions contained
heretin.   Pentegra shall have the right to 

                                      18
<PAGE>

assign the items set forth in Section 9.9(a) to any person or entity in its 
sole discretion.  The Practice shall not have the right to assign their 
rights or obligations hereunder without the prior written consent of 
Pentegra. 

    SECTION 10.2   AMENDMENTS.  This Agreement shall not be modified or amended
except by a written document executed by both parties to this Agreement, and
such written modification(s) or amendment(s) shall be attached hereto.

    SECTION 10.3   WAIVER OF PROVISIONS.  Any waiver of any terms and
conditions hereof must be in writing, and signed by the parties hereto.  The
waiver of any of the terms and conditions of this Agreement shall not be
construed as a waiver of any other terms and conditions hereof.

    SECTION 10.4   ADDITIONAL DOCUMENTS.  Each of the parties hereto agrees to
execute any document or documents that may be requested from time to time by the
other party to implement or complete such party's obligations pursuant to this
Agreement.

    SECTION 10.5   ATTORNEYS' FEES.  If legal action is commenced by either
party to enforce or defend its rights under this Agreement, the prevailing party
in such action shall be entitled to recover its costs and reasonable attorneys'
fees in addition to any other relief granted.

    SECTION 10.6   CONTRACT MODIFICATIONS FOR PROSPECTIVE LEGAL EVENTS.  In the
event any state or federal laws or regulations, now existing or enacted or
promulgated after the date hereof, are interpreted by judicial decision, a
regulatory agency or legal counsel in such a manner as to indicate that this
Agreement or any provision hereof may be in violation of such laws or
regulations, the Practice and Pentegra shall amend this Agreement as necessary
to preserve the underlying economic and financial arrangements between the
Practice and Pentegra and without substantial economic detriment to either
party.  To the extent any act or service required of Pentegra in this Agreement
should be construed or deemed, by any governmental authority, agency or court to
constitute the illegal practice of dentistry, the performance of said act or
service by Pentegra shall be deemed waived and forever unenforceable and the
provisions of this SECTION 10.6 shall be applicable.  Neither party shall claim
or assert illegality as a defense to the enforcement of this Agreement or any
provision hereof; instead, any such purported illegality shall be resolved
pursuant to the terms of this SECTION 10.6 and SECTION 10.10.

    SECTION 10.7   OFFSET.  Any and all amounts owing or to be paid by the
Practice to Pentegra hereunder or otherwise shall be subject to offset and
reduction PRO TANTO by any amounts that may be owing at any time by Pentegra to
the Practice in connection with this Agreement or any other agreement between
Pentegra and the Practice or any transaction contemplated hereby or thereby, as
reasonably determined by Pentegra.  If Pentegra determines that such offset is
appropriate, written notice specifying the reason for such offset shall be given
to the Practice at least ten (10) days prior to the due date of the payment to
be reduced.   In the event that the Practice disputes any amount to be offset
hereunder by written notice given to Pentegra within five (5) days of receipt of
the foregoing written notice by Pentegra, such dispute shall be subject to
arbitration as set forth in SECTION 10.21 hereof.

    SECTION 10.8   PARTIES IN INTEREST; NO THIRD PARTY BENEFICIARIES.  Except
as otherwise provided herein, the terms and conditions of this Agreement shall
inure to the benefit of and be binding upon the respective heirs, legal
representatives, successors and permitted assigns of the parties hereto. 
Neither this Agreement nor any other agreement contemplated hereby shall be
deemed to confer upon any person not a party hereto or thereto any rights or
remedies hereunder or thereunder.

    SECTION 10.9   ENTIRE AGREEMENT.  This Agreement and the agreements
contemplated hereby constitute the entire agreement of the parties regarding the
subject matter hereof, and supersede all prior agreements and understandings,
both written and oral, among the parties, or any of them, with respect to the
subject matter hereof.

                                      19
<PAGE>

    SECTION 10.10  SEVERABILITY.  If any provision of this Agreement is held 
to be illegal, invalid or unenforceable under present or future laws 
effective during the term hereof, such provision shall be fully severable and 
this Agreement shall be construed and enforced as if such illegal, invalid or 
unenforceable provision never comprised a part hereof; and the remaining 
provisions hereof shall remain in full force and effect and shall not be 
affected by the illegal, invalid or unenforceable provision or by its 
severance herefrom.  Furthermore, in lieu of such illegal, invalid or 
unenforceable provision, there shall be added automatically as part of this 
Agreement a provision as similar in its terms to such illegal, invalid or 
unenforceable provision as may be possible and be legal, valid and 
enforceable.

    SECTION 10.11  GOVERNING LAW.  THIS AGREEMENT AND THE RIGHTS AND
OBLIGATIONS OF THE PARTIES HERETO SHALL BE GOVERNED BY AND CONSTRUED AND
ENFORCED IN ACCORDANCE WITH THE SUBSTANTIVE LAWS (BUT NOT THE RULES GOVERNING
CONFLICTS OF LAWS) OF THE STATE OF INCORPORATION OF THE PRACTICE AS OF THE DATE
HEREOF. 

    SECTION 10.12  NO WAIVER; REMEDIES CUMULATIVE.  No party hereto shall by
any act (except by written instrument pursuant to SECTION 10.2 hereof), delay,
indulgence, omission or otherwise be deemed to have waived any right or remedy
hereunder or to have acquiesced in any default in or breach of any of the terms
and conditions hereof.  No failure to exercise, nor any delay in exercising, on
the part of any party hereto, any right, power or privilege hereunder shall
operate as a waiver thereof.  No single or partial exercise of any right, power
or privilege hereunder shall preclude any other or further exercise thereof or
the exercise of any other right, power or privilege.  No remedy set forth in
this Agreement or otherwise conferred upon or reserved to any party shall be
considered exclusive of any other remedy available to any party, but the same
shall be distinct, separate and cumulative and may be exercised from time to
time as often as occasion may arise or as may be deemed expedient.

    SECTION 10.13  COMMUNICATIONS.  The Practice and Pentegra agree that good
communication between the parties is essential to the successful performance of
this Agreement, and each pledges to communicate fully and clearly with the other
on matters relating to the successful operation of the Practice. 

    SECTION 10.14  CAPTIONS.  The captions in this Agreement are for
convenience of reference only and shall not limit or otherwise affect any of the
terms or provisions hereof.

    SECTION 10.15  GENDER AND NUMBER.  When the context requires, the gender of
all words used herein shall include the masculine, feminine and neuter and the
number of all words shall include the singular and plural.

    SECTION 10.16  REFERENCE TO AGREEMENT.  Use of the words "herein",
"hereof", "hereto" and the like in this Agreement shall be construed as
references to this Agreement as a whole and not to any particular Article,
Section or provision of this Agreement, unless otherwise noted.

    SECTION 10.17  NOTICE.  Whenever this Agreement requires or permits any
notice, request, or demand from one party to another, the notice, request, or
demand must be in writing to be effective and shall be deemed to be delivered
and received (i) if personally delivered or if delivered by telex, telegram,
facsimile or courier service, when actually received by the party to whom notice
is sent or (ii) if delivered by mail (whether actually received or not), at the
close of business on the third business day next following the day when placed
in the mail, postage prepaid, certified or registered, addressed to the
appropriate party or parties, at the address of such party set forth below (or
at such other address as such party may designate by written notice to all other
parties in accordance herewith):

         If to Pentegra:     Pentegra Dental Group, Inc. 
                             2999 N. 44th Street, Suite 650
                             Phoenix, Arizona 85018
                             Fax No.: (602) 952-0544
                             Attn:  President 

                                      20
<PAGE>

        with a copy to:      Jackson Walker L.L.P.
                             901 Main Street, Suite 6000
                             Dallas, Texas  75202
                             Fax No.:  (214) 953-5822
                             Attn:  James S. Ryan, III

       If to the Practice:   See Exhibit 10.18

       with a copy to:       See Exhibit 10.18


    SECTION 10.18  COUNTERPARTS.  This Agreement may be executed in multiple
counterparts, each of which shall be deemed an original, and all of which
together shall constitute one and the same instrument.

    SECTION 10.19  DEFINED TERMS.  Terms used in the Exhibits attached hereto
with their initial letter capitalized and not otherwise defined therein shall
have the meanings assigned to such terms in this Agreement.

    SECTION 10.20  ARBITRATION.  

    Upon the request of either Pentegra or the Practice (hereinafter referred
to as a "Party"), whether made before or after the institution of any legal
proceeding, any dispute among the parties hereto  in any way arising out of,
related to, or in connection with this Agreement (hereinafter a "Dispute"),
shall be resolved by binding arbitration in accordance with the terms of this
Section (hereinafter the "Arbitration Program").

    All Disputes between the Parties shall be resolved by binding arbitration
administered by the American Arbitration Association (the "AAA") in accordance
with the terms of this Arbitration Program, the Commercial Arbitration Rules of
the AAA.  In the event of any inconsistency between this Arbitration Program and
those rules or statutes, then the terms of this Arbitration Program shall
control.

    The parties hereto agree to adhere to all warranties and covenants (as
described herein) until such time as the arbitration process has been completed
and the arbitrators have determined each party's post-arbitration obligations
and responsibilities as it relates to such warranties and covenants.  No
provision of, nor the exercise of any rights under, this Arbitration Program
shall limit the right of any Party at any time to seek or use ancillary or
preliminary judicial or non-judicial self help remedies for the purposes of
obtaining, perfecting, preserving, or foreclosing upon any personal property in
which there has been granted a security interest or lien by a Party in the
Documents. In Disputes involving indebtedness or other monetary obligations,
each Party agrees that the other Party may proceed against all liable persons,
jointly and severally against one or more of them, without impairing rights
against other liable persons.  Nor shall a Party be required to join the
principal obligor or any other liable persons (e.g., sureties or guarantors) in
any proceeding against a particular person.  A Party may release or settle with
one or more liable persons as the Party deems fit without releasing or impairing
rights to proceed against any persons not so released.  All statutes of
limitation that would otherwise be applicable shall apply to any arbitration
proceeding.

    The party seeking arbitration shall notify the other Party, in writing, of
that Party's desire to arbitrate a dispute; and each Party shall, within twenty
(20) days from the date such notification is received, select an arbitrator, and
those two arbitrators shall select a third arbitrator within ten (10) days
thereafter.  The issues or claims in dispute shall be committed to writing,
separately stated and numbered, and each party's proposed answers or contentions
shall be signed below the questions. Failure by a party to select an arbitrator
within the prescribed time period shall serve as that Party's acquiescence and
acceptance of the other party's selection of arbitrator. The arbitrators shall
resolve all Disputes in accordance with the applicable substantive law.  Any
Dispute shall be decided by a majority vote of three arbitrators, unless the
claim or amount in controversy does not exceed $100,000.00, in which case a
single arbitrator (who shall have authority to render a maximum award of
$100,000.00, including all damages of any kind, 

                                      21
<PAGE>

costs and fees) may decide the Dispute.  The arbitrators may grant any remedy 
or relief that the arbitrators deem just and equitable and within the scope 
of this Arbitration Program.  The arbitrators may also grant such ancillary 
relief as is necessary to make effective the award.  In all arbitration 
proceedings the arbitrators shall make specific and written findings of fact 
and conclusions of law.  In all arbitration proceedings in which the amount 
in controversy exceeds $100,000.00, in the aggregate, the Parties shall have 
in addition to the statutory right to seek vacation or modification of any 
award pursuant to applicable law, the right to seek vacation or modification 
of any award that is based in whole, or in part, on an incorrect or erroneous 
ruling of law by appeal to an appropriate court having jurisdiction; 
provided, however, that any such application for vacation or modification of 
an award based on an incorrect ruling of law must be filed in a court having 
jurisdiction over the Dispute within 15 days from the date the award in 
rendered.  The arbitrators' findings of fact shall be binding on all Parties 
and shall not be subject to further review except as otherwise allowed by 
applicable law.

    To the maximum extent practicable, an arbitration proceeding hereunder
shall be concluded within 180 days of the filing of the Dispute with AAA. 
Arbitration proceedings hereunder shall be conducted where agreed to in writing
by the Parties or, in the absence of such agreement in Phoeniz, Arizona or the
headquarters of Pentegra if other than Phoeniz, Arizona.  The provisions of this
Arbitration Program shall survive any termination, amendment, or expiration of
the Documents, unless the Parties otherwise expressly agree in writing making
specific reference to this Arbitration Program.  To the extent permitted by
applicable law, the arbitrator shall have the power to award recovery of all
costs and fees (including attorney's fees, administrative fees, and arbitrators'
fees) to the prevailing Party.  This Arbitration Program may be amended,
changed, or modified only by a writing which specifically refers to this
Arbitration Program and which is signed by all the Parties.  If any term,
covenant, condition or provision of the Arbitration Program is found to be
unlawful or invalid or unenforceable, such illegality or invalidity or
unenforceable shall not affect the legality, validity or enforceability of the
remaining parts of this Arbitration Program, and all such remaining parts hereof
shall be valid and enforceable and have full force and effect as if the illegal,
invalid or unenforceable part had not been included.  Each Party agrees to keep
all Disputes and arbitration proceedings strictly confidential, except for
disclosures of information required in the ordinary course of business of the
Parties or by applicable law or regulation. 



                                      22
<PAGE>

    IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the date first written above.


                                         -------------------------------------

                                         By:
                                             ---------------------------------
                                         Title:
                                             ---------------------------------



                                         Pentegra Dental Group, Inc.


                                         By:
                                             ---------------------------------
                                         Title:
                                             ---------------------------------







                                       23

<PAGE>

                                  Exhibit 1.1(h)(iv)

               Additional Excluded Practice Expenses (i.e., "Addback")






<PAGE>
                                     Exhibit 3.3

                                       Premises






<PAGE>
                                    Exhibit 4.8(c)

                                    Practice Plans






<PAGE>
                                     Exhibit 4.10

                                  DENTIST  AGREEMENT


    This Dentist Agreement (the "Agreement") is made and entered into as of the
______ day of _______________ , 1997, by and between ______________________
("Dentist") in favor of Pentegra Dental Group, Inc., a Delaware corporation
("Pentegra"). 

                                 W I T N E S S E T H:

    WHEREAS, __________________ ("Practice") and Pentegra have agreed to enter
into that certain Service Agreement (herein so called) dated the date hereof,
pursuant to which Pentegra is to provide certain management services to the
Practice; and

    WHEREAS, as a condition to entering into the Service Agreement, Dentist 
has agreed to execute this Agreement. 

    NOW, THEREFORE, for and in consideration of ________________________[part
of the Acquisition Consideration] and other good and valuable consideration paid
by Pentegra to the Dentist, the receipt and sufficiency of which are hereby
acknowledged, Dentist hereby agrees as follows: 

    SECTION 1.     GUARANTY BY DENTIST.  (a) For five years from the date 
hereof and for so long thereafter as (i) Dentist owns any equity or other 
interest in the Practice (as defined in the Service Agreement), (ii) Dentist 
is employed by the Practice, or (iii) Dentist is in breach of the Employment 
Agreement between the Practice and Dentist, Dentist hereby guarantees, 
absolutely and unconditionally, the full punctual and prompt payment and 
performance (when due) of each and every obligation of Practice under the 
Service Agreement ("Guaranty"). This Guaranty shall include payment of the 
Service Fee, Practice Expenses and all other obligations and liabilities of 
the Practice contained in the Service Agreement.  This is a guaranty of 
payment and performance and not a guaranty of collection.  This Guaranty 
shall extend to and cover every extension, amendment or renewal of the 
Service Agreement and shall bind the Guarantor irrespective of the existence, 
value or condition of any collateral or security interest of Pentegra. 

    (b)   This Guaranty is made and accepted upon the following terms and
    conditions:

    Without notice to or the consent of the Dentist, Pentegra may renew, amend
    or extend the time, manner, place or terms of payment of the obligations
    under the Service Agreement or any renewal or extension thereof, and/or
    Pentegra may supplement, change, amend, substitute, modify or alter the
    obligations arising under the Service Agreement without in any way
    changing, releasing or discharging Dentist from liability and obligation
    hereunder;

    Dentist waives notice of presentment, and notice of protest, default or
    dishonor of the Service Agreement or any renewal or extension thereof;

    Dentist waives any right to require Pentegra to (1) proceed against the
    Practice, (2) proceed against or exhaust any security held by Pentegra, or
    (3) pursue any other remedy that Pentegra has or to which it may be
    entitled;

    Dentist agrees to pay reasonable attorney's fees and court costs which may
    be incurred by Pentegra in the enforcement of this Guaranty;

<PAGE>

    The liability of the Dentist shall remain and continue in full force and
    effect in spite of  the voluntary or involuntary liquidation, dissolution,
    sale of all or substantially all of the property of the Practice or
    marshalling of assets and liabilities, receivership, insolvency,
    bankruptcy, assignment for the benefit of creditors, reorganization,
    arrangement, composition or readjustment of, or any similar proceeding
    affecting, the Practice or any of its assets; 

    Until the Service Agreement is terminated and/or all obligations and
    liabilities thereunder are satisfied, Dentist hereby waives and releases
    any right of subrogation that Dentist has or to which Dentist may be
    entitled. 

    If any of the following events occur or shall be continuing (an "Event of
    Default"):

         (1)  A breach or event of default occurs under the terms of the
         Service Agreement and continues beyond any grace period, if any,
         provided therein for the curing of such default;

         (2)  Default in the performance or observance of any agreement,
         covenant, term or condition contained herein and such failure to cure
         such default within five (5) days from notice of such default given to
         Dentist;

Pentegra may declare the obligations of Dentist hereunder and thereunder to be
due and/or performable by Dentist under the terms hereof and thereof. 

    (c)  Pentegra does not, by its execution of this Agreement, waive any 
rights it may have against the Practice. No failure, omission or delay on the 
part of Pentegra in exercising any rights hereunder or in taking any action 
to collect or enforce payment or performance of any obligation to which this 
Guaranty applies or in enforcing observance or performance of any agreement, 
covenant, term or condition to be performed or observed under the Service 
Agreement either against the Practice or any other person primarily or 
secondarily liable with the Practice, shall operate as a waiver of any such 
right or in any manner prejudice the rights of Pentegra against the Dentist. 

    SECTION 2.     POWER OF ATTORNEY FOR BILLING.   In order to enable 
Pentegra to perform its services under the Service Agreement, the Dentist 
hereby appoints Pentegra for the term of this Agreement to be its true and 
lawful attorney-in-fact, for the following purposes:  (i) to bill patients, 
insurance companies, managed care payors, government payors and other 
third-party payors in the Dentist's name and on its behalf; (ii) to collect 
accounts receivable resulting from such billing in the Dentist's name and on 
its behalf; (iii) to receive payments on behalf of the Dentist from insurance 
companies, prepayments received from health care plans, government payors and 
all other third party payors; (iv) to take possession of and endorse in the 
name of the Dentist (and/or in the name of an individual dentist, such 
payment intended for purpose of payment of a bill related to the Dentist), 
any notes, checks, money orders, insurance payments and other instruments 
received in payment of accounts receivable and to open, close and otherwise 
deal with bank accounts in the name of the Dentist but which are managed by 
Pentegra; and (v) with the consent of Dentist, such consent not to be 
unreasonably withheld, to initiate the institution of legal proceedings in 
the name of the Dentist to collect any accounts and monies owed to the 
Dentist, to enforce the rights of the Dentist as creditor under any contract 
or in connection with the rendering of any service, and to contest 
adjustments and denials by governmental agencies (or their fiscal 
intermediaries) as third-party payors.  The Dentist may perform the functions 
or exercise the rights set forth in this Section only with the consent of 
Pentegra.  The Dentist shall cooperate with and at the request of Pentegra 
shall provide reasonable assistance to Pentegra with the functions set forth 
herein.  Pentegra agrees that any initiation of collection proceedings shall 
not be done in a manner as to injure the reputation of Dentist. 

    SECTION 3.     INDEMNIFICATION.  The Dentist shall indemnify, defend and 
hold Pentegra and its officers, directors, shareholders, employees, agents 
and consultants (other than such persons who are also officers, directors, 
shareholders, employees, agents or consultants of the Practice) harmless, 
from and against any and all liabilities, losses, damages, claims, causes of 
action and expenses (including reasonable attorneys' fees), not covered by 
insurance

                                       2
<PAGE>

(including self-insured insurance and reserves), whenever arising or 
incurred, that are caused or asserted to have been caused, directly or 
indirectly, by or as a result of the performance of services or the 
performance of any intentional acts, negligent acts or omissions by the 
Dentist during the term of the Service Agreement or related to, resulting 
from or arising out of an Pentegra employee performing a dental or related  
function under the supervision of the Dentist.  

    SECTION 4.     SALE OF OWNERSHIP OF THE PRACTICE.  Dentist acknowledges 
and agrees that, for a period of five (5) years from the date hereof and for 
so long thereafter as Dentist is a party to the Employment Agreement with the 
Practice and is not in breach thereof  (other than upon termination of the 
Service Agreement pursuant to SECTION 9.3 thereof),  Dentist shall  not 
pledge, encumber, grant a security interest in,  sell, transfer or otherwise 
dispose of any interest (equity, participation or otherwise) in the Practice, 
whether presently held or hereafter acquired, without the prior written 
consent of Pentegra. 

    SECTION 5.     ACKNOWLEDGEMENT OF PROPRIETARY INTEREST.   Dentist 
recognizes recognizes the proprietary interest of Pentegra and the dental 
practices managed by Pentegra (collectively, "Pentegra Group") in any 
Confidential and Proprietary Information (as hereinafter defined) of Pentegra 
Group. Dentist acknowledges and agrees that any and all Confidential and 
Proprietary Information communicated to, learned of, developed or otherwise 
acquired by the Dentist during the term of this Agreement shall be the 
property of Pentegra Group.  Dentist further acknowledges and understands 
that its disclosure of any Confidential and Proprietary Information will 
result in irreparable injury and damage to Pentegra Group.  As used herein, 
"Confidential and Proprietary Information" means all trade secrets and other 
confidential and/or proprietary information of Pentegra Group, including 
information derived from reports, investigations, research, work in progress, 
codes, marketing and sales programs, financial projections, cost summaries, 
pricing formula, contracts analyses, financial information, projections, 
confidential filings with any state or federal agency, and all other 
confidential concepts, methods of doing business, ideas, materials or 
information (other than the Practice's or the Dentists' original patient 
records) prepared or performed for, by or on behalf of Pentegra Group by its 
employees, officers, directors, agents, representatives, or consultants.

    SECTION 6.     COVENANT NOT-TO-DIVULGE CONFIDENTIAL AND PROPRIETARY 
INFORMATION.  Dentist acknowledges and agrees that Pentegra Group is entitled 
to prevent the disclosure of Confidential and Proprietary Information.  
Dentist agrees at all times during the term of this Agreement and thereafter 
to hold in strictest confidence and not to disclose to any person, firm or 
corporation, other than to Practice Professional Employees (as defined in the 
Service Agreement) and persons engaged by Pentegra to further the business of 
the Practice, and not to use, except in the pursuit of the business of 
Pentegra Group, Confidential and Proprietary Information, without the prior 
written consent of Pentegra; unless (i) such information becomes known or 
available to the public generally through no wrongful act of Dentist or its 
employees, (ii) disclosure is required by law or the rule, regulation or 
order of any governmental authority under color of law, provided, that prior 
to disclosing any Confidential and Proprietary Information pursuant to this 
clause (ii) Dentist shall, if possible, give prior written notice thereof to 
Pentegra and provide Pentegra with the opportunity to contest such 
disclosure, or (iii) Dentist reasonably believes that such disclosure is 
required in connection with a lawsuit to which Dentist is a party.

    SECTION 7.     NON-SOLICITATION OF PATIENTS.  Dentist agrees that for 
five years from the date hereof and two years following the termination of 
Dentist's employment with the Practice and/or ownership interest in the 
Practice, Dentist shall not induce or attempt to influence any employee of 
the Practice or Pentegra to terminate his or her employment, or to hire any 
such employee, whether or not so induced or influenced, except that any such 
employee may be hired with the prior written consent of the Practice or 
Pentegra, as applicable, or (iv) solicit, induce or attempt to influence any 
patient of the Practice or any dental practice managed by Pentegra to cease 
treatment by or to begin treatment at any dental office not managed or 
affiliated with the Practice or Pentegra. 

    SECTION 8.     RETURN OF MATERIALS TO PENTEGRA.  In the event of 
termination of the Service Agreement or at any time upon the request of 
Pentegra, Dentist will promptly deliver to Pentegra all documents, data and 
other information in Dentist's possession that contains any Confidential and 
Proprietary Information.  Dentist shall not take 

                                      3
<PAGE>

or retain any documents or other information, or any reproduction or excerpt 
thereof, containing any Confidential and Proprietary Information, unless 
otherwise authorized in writing by Pentegra.

    SECTION 9.     ASSIGNMENT OF EMPLOYMENT AGREEMENT.  Dentist acknowledges 
and agrees that in the event of an Event of  Default, the Practice shall be 
required to assign the Employment Agreement executed between the Practice and 
the Dentist to Pentegra or its authorized designee  pursuant to the terms of 
the Service Agreement; and the Dentist hereby agrees that he shall execute 
all documentation evidencing such assignment. 

    SECTION 10.    OPTION TO PURCHASE PRACTICE EQUITY INTEREST  AND PATIENT 
RECORDS.  Upon the occurrence of an Event of Default or termination of the 
Service Agreement pursuant to SECTION 9.4 thereof,  Pentegra shall have the 
option to cause any legally authorized designee of Pentegra (to be selected 
by Pentegra in its sole discretion) to: (i) purchase the ownership interests 
of Dentist in the Practice for the sum of the amounts paid by the Dentist for 
such equity interests and (ii) purchase the patient records of Dentist for 
the sum of ten dollars.  The Practice and Dentist hereby agree that in the 
event of the exercise of such option, each shall cooperate regarding the 
giving of the requisite patient notification of such assignment.   Dentist 
and the Practice hereby agree to execute any and all documentation evidencing 
the transfer of such equity interest and patient records, including without 
limitation, transfer and delivery of the stock certificates or other 
documents evidencing such equity ownership, an assignment of the patient 
records and charts and a notification letter to be forwarded to such 
patients.  The option contained herein shall not be exercisable by Pentegra 
upon the death or Disability (as defined in the Service Agreement) of Dentist.

    SECTION 11.    ASSIGNMENT.  Pentegra shall have the right to assign its 
rights hereunder to any lender of Pentegra, any affiliate of Pentegra or any 
successor to all or substantially all of the assets of Pentegra; provided 
that such assignee shall agree to be bound by the terms and conditions 
contained herein.   Pentegra shall have the right to assign the items set 
forth in Section 10 to any person or entity in its sole discretion.  Dentist 
shall not have the right to assign its rights or obligations hereunder 
without the prior written consent of Pentegra. 

    SECTION 12.    AMENDMENTS; WAIVER.  This Agreement shall not be modified 
or amended, and no provision hereof shall be waived, except by a written 
document executed by both parties to this Agreement.   

    SECTION 13.    ADDITIONAL DOCUMENTS.  Each of the parties hereto agrees 
to execute any document or documents that may be requested from time to time 
by the other party to implement or complete such party's obligations pursuant 
to this Agreement.

    Section 14.    ATTORNEYS' FEES.  If legal action is commenced by either 
party to enforce or defend its rights under this Agreement, the prevailing 
party in such action shall be entitled to recover its costs and reasonable 
attorneys' fees in addition to any other relief granted.

    SECTION 15.    PARTIES IN INTEREST; NO THIRD PARTY BENEFICIARIES.  Except 
as otherwise provided herein, the terms and conditions of this Agreement 
shall inure to the benefit of and be binding upon the respective heirs, legal 
representatives, successors and permitted assigns of the parties hereto. 
Neither this Agreement nor any other agreement contemplated hereby shall be 
deemed to confer upon any person not a party hereto or thereto any rights or 
remedies hereunder or thereunder.

    Section 16.    ENTIRE AGREEMENT.  This Agreement and the agreements 
contemplated hereby constitute the entire agreement of the parties regarding 
the subject matter hereof, and supersede all prior agreements and 
understandings, both written and oral, among the parties, or any of them, 
with respect to the subject matter hereof.

    SECTION 17.    SEVERABILITY.  If any provision of this Agreement is held 
to be illegal, invalid or unenforceable under present or future laws 
effective during the term hereof, such provision shall be fully severable and 
this Agreement shall be construed and enforced as if such illegal, invalid or 
unenforceable provision never comprised a part hereof; and the remaining 
provisions hereof shall remain in full force and effect and shall not be 
affected by the 

                                      4
<PAGE>

illegal, invalid or unenforceable provision or by its severance herefrom.  
Furthermore, in lieu of such illegal, invalid or unenforceable provision, 
there shall be added automatically as part of this Agreement a provision as 
similar in its terms to such illegal, invalid or unenforceable provision as 
may be possible and be legal, valid and enforceable.

    SECTION 18.    GOVERNING LAW.  THIS AGREEMENT AND THE RIGHTS AND 
OBLIGATIONS OF THE PARTIES HERETO SHALL BE GOVERNED BY AND CONSTRUED AND 
ENFORCED IN ACCORDANCE WITH THE SUBSTANTIVE LAWS (BUT NOT THE RULES GOVERNING 
CONFLICTS OF LAWS) OF THE STATE OF INCORPORATION OF THE PRACTICE AS OF THE 
DATE HEREOF. 

    SECTION 19.    NO WAIVER; REMEDIES CUMULATIVE.  No party hereto shall by 
any act (except by written instrument pursuant to SECTION 10.2 hereof), of 
delay, indulgence, omission or otherwise be deemed to have waived any right 
or remedy hereunder or to have acquiesced in any default in or breach of any 
of the terms and conditions hereof.  No failure to exercise, nor any delay in 
exercising, on the part of any party hereto, any right, power or privilege 
hereunder shall operate as a waiver thereof.  No single or partial exercise 
of any right, power or privilege hereunder shall preclude any other or 
further exercise thereof or the exercise of any other right, power or 
privilege.  No remedy set forth in this Agreement or otherwise conferred upon 
or reserved to any party shall be considered exclusive of any other remedy 
available to any party, but the same shall be distinct, separate and 
cumulative and may be exercised from time to time as often as occasion may 
arise or as may be deemed expedient.

    SECTION 20.    NOTICE.  Whenever this Agreement requires or permits any 
notice, request, or demand from one party to another, the notice, request, or 
demand must be in writing to be effective and shall be deemed to be delivered 
and received (i) if personally delivered or if delivered by telex, telegram, 
facsimile or courier service, when actually received by the party to whom 
notice is sent or (ii) if delivered by mail (whether actually received or 
not), at the close of business on the third business day next following the 
day when placed in the mail, postage prepaid, certified or registered, 
addressed to the appropriate party or parties, at the address of such party 
set forth below (or at such other address as such party may designate by 
written notice to all other parties in accordance herewith):

         If to Pentegra:     Pentegra Dental Group, Inc. 
                             2999 N. 44th Street, Suite 650
                             Phoenix, Arizona 85018
                             Fax No.: (602) 952-0544
                             Attn:  President 

         with a copy to:     Jackson Walker L.L.P.
                             901 Main Street, Suite 6000
                             Dallas, Texas  75202
                             Fax No.: (214) 953-5822
                             Attn:  James S. Ryan, III

         If to the Dentist: 
                            ------------------------------------
                            ------------------------------------
                            ------------------------------------
                             Fax No.: 
                                      --------------------------


         with a copy to:    
                            ------------------------------------
                            ------------------------------------
                            ------------------------------------
                             Fax No.: 
                                      --------------------------

                                      5
<PAGE>

    SECTION 21.    COUNTERPARTS.  This Agreement may be executed in multiple 
counterparts, each of which shall be deemed an original, and all of which 
together shall constitute one and the same instrument.

    SECTION 22.    ARBITRATION.   Upon the request of either Pentegra or the 
Dentist (hereinafter referred to as a "Party"), whether made before or after 
the institution of any legal proceeding, any dispute arising out of, related 
to, or in connection with this Agreement (hereinafter a "Dispute"), shall be 
resolved by binding arbitration in accordance with the terms of this Section 
(hereinafter the "Arbitration Program").

    All Disputes between the Parties shall be resolved by binding arbitration 
administered by the American Arbitration Association (the "AAA") in 
accordance with the terms of this Arbitration Program, the Commercial 
Arbitration Rules of the AAA.  In the event of any inconsistency between this 
Arbitration Program and those rules or statutes, then the terms of this 
Arbitration Program shall control.

    The parties hereto agree to adhere to all warranties and covenants (as 
described herein) until such time as the arbitration process has been 
completed and the arbitrators have determined each party's post-arbitration 
obligations and responsibilities as it relates to such warranties and 
covenants.  No provision of, nor the exercise of any rights under, this 
Arbitration Program shall limit the right of any Party at any time to seek or 
use ancillary or preliminary judicial or non-judicial self help remedies for 
the purposes of obtaining, perfecting, preserving, or foreclosing upon any 
personal property in which there has been granted a security interest or lien 
by a Party in the Documents. In Disputes involving indebtedness or other 
monetary obligations, each Party agrees that the other Party may proceed 
against all liable persons, jointly and severally against one or more of 
them, without impairing rights against other liable persons.  Nor shall a 
Party be required to join the principal obligor or any other liable persons 
(e.g., sureties or guarantors) in any proceeding against a particular person. 
 A Party may release or settle with one or more liable persons as the Party 
deems fit without releasing or impairing rights to proceed against any 
persons not so released.  All statutes of limitation that would otherwise be 
applicable shall apply to any arbitration proceeding.

    The party seeking arbitration shall notify the other Party, in writing, 
of that Party's desire to arbitrate a dispute; and each Party shall, within 
twenty (20) days from the date such notification is received, select an 
arbitrator, and those two arbitrators shall select a third arbitrator within 
ten (10) days thereafter.  The issues or claims in dispute shall be committed 
to writing, separately stated and numbered, and each party's proposed answers 
or contentions shall be signed below the questions. Failure by a party to 
select an arbitrator within the prescribed time period shall serve as that 
Party's acquiescence and acceptance of the other party's selection of 
arbitrator. The arbitrators shall resolve all Disputes in accordance with the 
applicable substantive law.  Any Dispute shall be decided by a majority vote 
of three arbitrators, unless the claim or amount in controversy does not 
exceed $100,000.00, in which case a single arbitrator (who shall have 
authority to render a maximum award of $100,000.00, including all damages of 
any kind, costs and fees) may decide the Dispute. The arbitrators may grant 
any remedy or relief that the arbitrators deem just and equitable and within 
the scope of this Arbitration Program.  The arbitrators may also grant such 
ancillary relief as is necessary to make effective the award.  In all 
arbitration proceedings the arbitrators shall make specific and written 
findings of fact and conclusions of law.  In all arbitration proceedings in 
which the amount in controversy exceeds $100,000.00, in the aggregate, the 
Parties shall have in addition to the statutory right to seek vacation or 
modification of any award pursuant to applicable law, the right to seek 
vacation or modification of any award that is based in whole, or in part, on 
an incorrect or erroneous ruling of law by appeal to an appropriate court 
having jurisdiction; provided, however, that any such application for 
vacation or modification of an award based on an incorrect ruling of law must 
be filed in a court having jurisdiction over the Dispute within 15 days from 
the date the award in rendered.  The arbitrators' findings of fact shall be 
binding on all Parties and shall not be subject to further review except as 
otherwise allowed by applicable law.

    To the maximum extent practicable, an arbitration proceeding hereunder 
shall be concluded within 180 days of the filing of the Dispute with AAA. 
Arbitration proceedings hereunder shall be conducted where agreed to in 
writing by the Parties or, in the absence of such agreement in Phoeniz, 
Arizona or the headquarters of Pentegra if other than Phoeniz, Arizona.  The 
provisions of this Arbitration Program shall survive any termination, 
amendment, 

                                      6
<PAGE>

or expiration of the Documents, unless the Parties otherwise expressly agree 
in writing making specific reference to this Arbitration Program.  To the 
extent permitted by applicable law, the arbitrator shall have the power to 
award recovery of all costs and fees (including attorney's fees, 
administrative fees, and arbitrators' fees) to the prevailing Party.  This 
Arbitration Program may be amended, changed, or modified only by a writing 
which specifically refers to this Arbitration Program and which is signed by 
all the Parties.  If any term, covenant, condition or provision of the 
Arbitration Program is found to be unlawful or invalid or unenforceable, such 
illegality or invalidity or unenforceable shall not affect the legality, 
validity or enforceability of the remaining parts of this Arbitration 
Program, and all such remaining parts hereof shall be valid and enforceable 
and have full force and effect as if the illegal, invalid or unenforceable 
part had not been included.  Each Party agrees to keep all Disputes and 
arbitration proceedings strictly confidential, except for disclosures of 
information required in the ordinary course of business of the Parties or by 
applicable law or regulation.



                                      7
<PAGE>


     IN WITNESS WHEREOF, the parties hereto have executed this Agreement as 
of the date first written above.

                                Practice
                               
                               
                                By:    
                                    ----------------------------------------
                                Title: 
                                    ----------------------------------------



                                Pentegra Dental Group, Inc.


                                By:    
                                    ----------------------------------------
                                Title: 
                                    ----------------------------------------





                                       8
<PAGE>

                                    Exhibit 7.1(b)

________________  percent (____%) of Practice Accrual Earnings (the "Service
Fee").  Practice Accrual Earnings shall be defined as Revenues, earned on the
accrual basis of accounting and applying GAAP concepts, less Practice Expenses.

                                         [or]

$________ per year to be renegotiated in good faith between the parties hereto
prior to each anniversary hereof.

                                         [or]

Sixteen percent (16%) of Revenues, not to exceed thirty-five percent (35%) of
Practice Accrual Earnings (the "Service Fee").  Practice Accrual Earnings shall
be defined as Revenues, earned on the accrual basis of accounting and applying
GAAP concepts, less Practice Expenses.

                                         [or]

For the first _____ calendar years following the date hereof, the greater of (i)
__________ percent (____%) of Practice Accrual Earnings, or $___________; and
thereafter __________ percent (____%) of Practice Accrual Earnings (the "Service
Fee").  Practice Accrual Earnings shall be defined as Revenues, earned on the
accrual basis of accounting and applying GAAP concepts, less Practice Expenses.



<PAGE>

                                     Exhibit 7.3

                              Form of Security Agreement






<PAGE>

                                    Exhibit 10.18

                                Addresses for Notices







<PAGE>
                          PENTEGRA DENTAL GROUP, INC.
 
                EXHIBIT 11.1--COMPUTATION OF EARNINGS PER SHARE
 
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                                  HISTORICAL
                                                                                              FOR THE PERIOD FROM
                                                                                              INCEPTION, FEBRUARY
                                                                                                      21,
                                                                                              1997, THROUGH JUNE
                                                                                                   30, 1997
                                                                                             ---------------------
<S>                                                                                          <C>
Primary:
Weighted average common shares outstanding.................................................            1,757
Weighted average shares issued for Acquisitions............................................           --
Shares issued in initial public offering...................................................           --
Less excess shares issued in initial public offering.......................................           --
                                                                                                      ------
Total primary shares.......................................................................            1,757
                                                                                                      ------
                                                                                                      ------
Net income (loss)..........................................................................        $    (239)
                                                                                                      ------
                                                                                                      ------
Net income (loss) per share................................................................        $   (0.14)
                                                                                                      ------
                                                                                                      ------
 
FULLY DILUTED:
Weighted average common shares outstanding.................................................            1,757
Weighted average shares issued for Acquisitions............................................           --
Shares issued in initial public offering...................................................           --
Less excess shares issued in initial public offering.......................................           --
                                                                                                      ------
Total fully diluted shares.................................................................            1,757
                                                                                                      ------
                                                                                                      ------
Net income (loss)..........................................................................        $    (239)
                                                                                                      ------
                                                                                                      ------
Net income (loss) per share................................................................        $   (0.14)
                                                                                                      ------
                                                                                                      ------
</TABLE>

<PAGE>
                                                                    EXHIBIT 23.1
 
                       CONSENT OF INDEPENDENT ACCOUNTANTS
 
    We consent to the inclusion in this registration statement on Form S-1 (File
No.     ) relating to the registration of 2,500,000 shares of $0.001 par value
common stock of i) our report dated October 10, 1997 on our audit of the
financial statements of Pentegra Dental Group, Inc. as of June 30, 1997 and for
the period from inception, February 21, 1997, through June 30, 1997, and ii) our
report dated August 8, 1997 on our audits of the combined financial statements
of Pentegra, Ltd, and Napili, International as of December 31, 1995 and 1996 and
for each of the three years ended December 31, 1996. We also consent to the
reference to our firm under the caption "Experts."
 
                                          /s/ COOPERS & LYBRAND L.L.P.
 
Houston, Texas
October 10, 1997

<PAGE>
                                                                    EXHIBIT 23.3
 
                          CONSENT OF PROPOSED DIRECTOR
 
    Pursuant to Rule 428 under the Securities Act of 1933, as amended (the
"Securities Act"), the undersigned hereby consents to being named as a nominee
to the Board of Directors of Pentegra Dental Group, Inc. (the "Registrant") in
the Prospectus constituting a part of the Registration Statement on Form S-1 of
the Registrant filed under the Securities Act.
 
<TABLE>
<C>                                                   <S>
                                                      /s/ Ronnie L. Andress
                                                      --------------------------------------
                                               Name:  Ronnie L. Andress
 
September 9, 1997
</TABLE>
 
<PAGE>
                          CONSENT OF PROPOSED DIRECTOR
 
    Pursuant to Rule 428 under the Securities Act of 1933, as amended (the
"Securities Act"), the undersigned hereby consents to being named as a nominee
to the Board of Directors of Pentegra Dental Group, Inc. (the "Registrant") in
the Prospectus constituting a part of the Registration Statement on Form S-1 of
the Registrant filed under the Securities Act.
 
<TABLE>
<C>                                                   <S>
                                                      /s/ James H. Clarke, Jr., D.D.S.
                                                      --------------------------------------
                                               Name:  James H. Clarke, Jr., D.D.S.
 
September 4, 1997
</TABLE>
 
<PAGE>
                          CONSENT OF PROPOSED DIRECTOR
 
    Pursuant to Rule 428 under the Securities Act of 1933, as amended (the
"Securities Act"), the undersigned hereby consents to being named as a nominee
to the Board of Directors of Pentegra Dental Group, Inc. (the "Registrant") in
the Prospectus constituting a part of the Registration Statement on Form S-1 of
the Registrant filed under the Securities Act.
 
<TABLE>
<C>                                                   <S>
                                                      /s/ Ronald E. Geistfeld
                                                      --------------------------------------
                                               Name:  Ronald E. Geistfeld
 
July 24, 1997
</TABLE>
 
<PAGE>
                          CONSENT OF PROPOSED DIRECTOR
 
    Pursuant to Rule 428 under the Securities Act of 1933, as amended (the
"Securities Act"), the undersigned hereby consents to being named as a nominee
to the Board of Directors of Pentegra Dental Group, Inc. (the "Registrant") in
the Prospectus constituting a part of the Registration Statement on Form S-1 of
the Registrant filed under the Securities Act.
 
<TABLE>
<C>                                                   <S>
                                                      /s/ Mack E. Greder
                                                      --------------------------------------
                                               Name:  Mack E. Greder
 
July 24, 1997
</TABLE>
 
<PAGE>
                          CONSENT OF PROPOSED DIRECTOR
 
    Pursuant to Rule 428 under the Securities Act of 1933, as amended (the
"Securities Act"), the undersigned hereby consents to being named as a nominee
to the Board of Directors of Pentegra Dental Group, Inc. (the "Registrant") in
the Prospectus constituting a part of the Registration Statement on Form S-1 of
the Registrant filed under the Securities Act.
 
<TABLE>
<C>                                                   <S>
                                                      /s/ Roger Allen Kay
                                                      --------------------------------------
                                               Name:  Roger Allen Kay
 
July 28, 1997
</TABLE>
 
<PAGE>
                          CONSENT OF PROPOSED DIRECTOR
 
    Pursuant to Rule 428 under the Securities Act of 1933, as amended (the
"Securities Act"), the undersigned hereby consents to being named as a nominee
to the Board of Directors of Pentegra Dental Group, Inc. (the "Registrant") in
the Prospectus constituting a part of the Registration Statement on Form S-1 of
the Registrant filed under the Securities Act.
 
<TABLE>
<C>                                                   <S>
                                                      /s/ Gerald F. Mahoney
                                                      --------------------------------------
                                               Name:  Gerald F. Mahoney
 
July 22, 1997
</TABLE>
 
<PAGE>
                          CONSENT OF PROPOSED DIRECTOR
 
    Pursuant to Rule 428 under the Securities Act of 1933, as amended (the
"Securities Act"), the undersigned hereby consents to being named as a nominee
to the Board of Directors of Pentegra Dental Group, Inc. (the "Registrant") in
the Prospectus constituting a part of the Registration Statement on Form S-1 of
the Registrant filed under the Securities Act.
 
<TABLE>
<C>                                                   <S>
                                                      /s/ Anthony P. Maris
                                                      --------------------------------------
                                               Name:  Anthony P. Maris
 
July 25, 1997
</TABLE>
 
<PAGE>
                          CONSENT OF PROPOSED DIRECTOR
 
    Pursuant to Rule 428 under the Securities Act of 1933, as amended (the
"Securities Act"), the undersigned hereby consents to being named as a nominee
to the Board of Directors of Pentegra Dental Group, Inc. (the "Registrant") in
the Prospectus constituting a part of the Registration Statement on Form S-1 of
the Registrant filed under the Securities Act.
 
<TABLE>
<C>                                                   <S>
                                                      /s/ Ronald M. Yaros
                                                      --------------------------------------
                                               Name:  Ronald M. Yaros
 
July 25, 1997
</TABLE>
 
<PAGE>
                          CONSENT OF PROPOSED DIRECTOR
 
    Pursuant to Rule 428 under the Securities Act of 1933, as amended (the
"Securities Act"), the undersigned hereby consents to being named as a nominee
to the Board of Directors of Pentegra Dental Group, Inc. (the "Registrant") in
the Prospectus constituting a part of the Registration Statement on Form S-1 of
the Registrant filed under the Securities Act.
 
<TABLE>
<C>                                                   <S>
                                                      /s/ Sam H. Carr
                                                      --------------------------------------
                                               Name:  Sam H. Carr
 
September 19, 1997
</TABLE>


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