STERI OSS INC
S-1/A, 1997-10-22
DENTAL EQUIPMENT & SUPPLIES
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<PAGE>   1
 
   
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON OCTOBER 22, 1997
    
                                                      REGISTRATION NO. 333-34397
================================================================================
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
   
                                AMENDMENT NO. 4
    
                                       TO
 
                                    FORM S-1
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
 
                                STERI-OSS, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
 
<TABLE>
<S>                             <C>                             <C>
            DELAWARE                          3843                         13-3915553
(STATE OR OTHER JURISDICTION OF   (PRIMARY STANDARD INDUSTRIAL          (I.R.S. EMPLOYER
 INCORPORATION OR ORGANIZATION)   CLASSIFICATION CODE NUMBER)         IDENTIFICATION NO.)
</TABLE>
 
                            ------------------------
 
                              22895 EASTPARK DRIVE
                         YORBA LINDA, CALIFORNIA 92887
                                 (714) 282-6515
              (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER,
       INCLUDING AREA CODE, OF REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
                            ------------------------
 
                              KENNETH A. DARIENZO
                      CHAIRMAN AND CHIEF EXECUTIVE OFFICER
                                STERI-OSS, INC.
                              22895 EASTPARK DRIVE
                         YORBA LINDA, CALIFORNIA 92887
                                 (714) 282-6515
           (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER,
                   INCLUDING AREA CODE, OF AGENT FOR SERVICE)
                            ------------------------
 
                                   COPIES TO:
 
<TABLE>
<S>                                             <C>
         FREDERIC A. RANDALL, JR., ESQ.                     ALISON S. RESSLER, ESQ.
        BROBECK, PHLEGER & HARRISON LLP                       SULLIVAN & CROMWELL
        4675 MACARTHUR COURT, SUITE 1000                444 S. FLOWER STREET, SUITE 1200
        NEWPORT BEACH, CALIFORNIA 92660                  LOS ANGELES, CALIFORNIA 90071
                 (714) 752-7535                                  (213) 955-8000
</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 of
1933, 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, please 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 delivery of the Prospectus is expected to be made pursuant to Rule 434,
please check the following box.   [ ]
                            ------------------------
 
     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>   2
 
     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.
 
   
                 SUBJECT TO COMPLETION, DATED OCTOBER 22, 1997
    
PROSPECTUS
            , 1997
                                4,700,000 SHARES
 
                                [STERI-OSS LOGO]
 
                                  COMMON STOCK
 
     All of the 4,700,000 shares of Common Stock, $.0001 par value per share
(the "Common Stock"), offered hereby are being sold by Steri-Oss, Inc.
("Steri-Oss" or the "Company").
 
     Prior to this offering (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 $14.00 and $16.00 per share. See "Underwriting" for
information relating to the factors to be considered in determining the initial
public offering price.
 
   
     The Common Stock has been approved for quotation on the Nasdaq National
Market under the symbol "STRI."
    
 
     SEE "RISK FACTORS" COMMENCING ON PAGE 8 OF THIS PROSPECTUS FOR A DISCUSSION
OF CERTAIN FACTORS THAT SHOULD BE CONSIDERED BY PROSPECTIVE INVESTORS IN THE
COMMON STOCK.
  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>
<S>                               <C>                  <C>                  <C>
- -------------------------------------------------------------------------------------------------
                                          PRICE            UNDERWRITING           PROCEEDS
                                         TO THE            DISCOUNTS AND           TO THE
                                         PUBLIC           COMMISSIONS(1)         COMPANY(2)
- -------------------------------------------------------------------------------------------------
 
Per Share.........................           $                   $                    $
Total (3).........................           $                   $                    $
- -------------------------------------------------------------------------------------------------
</TABLE>
 
(1)  See "Underwriting" for indemnification arrangements with the Underwriters.
 
(2)  Before deducting expenses of the Offering estimated at $700,000, which will
     be paid by the Company.
 
(3)  The Company has granted to the Underwriters a 30-day option to purchase up
     to an aggregate of 705,000 additional shares of Common Stock at the Price
     to the Public less Underwriting Discounts and Commissions, solely to cover
     over-allotments, if any. If such option is exercised in full, the total
     Price to the Public, Underwriting Discounts and Commissions and Proceeds to
     the Company will be $          , $          and $          , respectively.
     See "Underwriting."
 
     The shares of Common Stock are being offered by the several Underwriters
when, as and if delivered to and accepted by the Underwriters and subject to
various prior conditions, including the right to reject orders in whole or in
part. It is expected that delivery of certificates representing the shares of
Common Stock will be made against payment in New York, New York on or about
            , 1997.
 
DONALDSON, LUFKIN & JENRETTE
        SECURITIES CORPORATION
                                          UBS SECURITIES
 
                                                           FURMAN SELZ
<PAGE>   3
 
  [COLOR PHOTOS CONSIST OF THE COMPANY'S IMPLANTS, CORPORATE HEADQUARTERS, CNC
MACHINES AND OTHER MANUFACTURING EQUIPMENT, A CLEAN ROOM TECHNICIAN AND IN-HOUSE
                             TRAINING FACILITIES.]
 
     Steri-Oss(R), EZ Steps(R) and Replace(TM) are trademarks of the Company.
This Prospectus also includes trademarks of companies other than the Company.
 
CERTAIN PERSONS PARTICIPATING IN THIS OFFERING MAY ENGAGE IN TRANSACTIONS THAT
STABILIZE, MAINTAIN OR OTHERWISE AFFECT THE PRICE OF THE COMMON STOCK, INCLUDING
PURCHASES OF THE COMMON STOCK TO STABILIZE ITS MARKET PRICE, PURCHASES OF THE
COMMON STOCK TO COVER SOME OR ALL OF A SHORT POSITION IN THE COMMON STOCK
MAINTAINED BY THE UNDERWRITERS AND THE IMPOSITION OF PENALTY BIDS. THE
UNDERWRITERS ARE NOT REQUIRED TO ENGAGE IN THESE ACTIVITIES, AND MAY END ANY OF
THESE ACTIVITIES AT ANY TIME. FOR A DESCRIPTION OF THESE ACTIVITIES, SEE
"UNDERWRITING."
 
                                        2
<PAGE>   4
 
                               PROSPECTUS SUMMARY
 
     The following summary is qualified in its entirety by the more detailed
information, including "Risk Factors" and the Consolidated Financial Statements
and Notes thereto appearing elsewhere in this Prospectus. Except as otherwise
indicated, the information contained in this Prospectus gives effect to the
50-for-1 stock split to be effected in October 1997 and assumes (i) the
conversion (the "Preferred Stock Conversion") of 17,471 shares of the Company's
Class A 8.8% Cumulative Redeemable Preferred Stock (the "Class A Preferred
Stock") and 2,527 shares of the Company's Class C 8.0% Junior Cumulative
Redeemable Preferred Stock (the "Class C Preferred Stock") into an aggregate of
1,433,547 shares of Common Stock upon consummation of the Offering (assuming an
initial public offering price of $15.00 per share), (ii) the redemption upon
consummation of the Offering of all outstanding shares of Class A Preferred
Stock, Class B 8.0% Cumulative Convertible Preferred Stock (the "Class B
Preferred Stock") and Class C Preferred Stock not converting into Common Stock
in the Preferred Stock Conversion, (iii) the exercise of outstanding warrants to
purchase 4,750,000 shares of Common Stock prior to the consummation of the
Offering, (iv) no exercise of outstanding options to purchase 968,344 shares of
Common Stock and (v) no exercise of the Underwriters' over-allotment option.
Unless otherwise indicated, all references to the "Company" and "Steri-Oss"
refer to Steri-Oss, Inc. and its combined subsidiaries and predecessors. Because
the Company uses a 52/53 week fiscal year, fiscal periods may not end on the
same day as the end of the respective calendar periods. For convenience of
presentation, the consolidated financial data throughout this Prospectus has
been shown as of and for the last day of the applicable period unless otherwise
indicated.
 
                                  THE COMPANY
 
     Steri-Oss, Inc. is a leading developer, manufacturer and marketer of a
broad line of dental implant systems, which include implants, abutments and
related surgical instruments. A dental implant is a small titanium screw or
cylinder that is surgically placed directly into the jaw and serves as a
foundation for a replacement tooth. An abutment is a small titanium attachment
that is typically screwed into or onto the implant and connects the artificial
tooth to the implant. The Company believes that its dental implant systems are
superior to traditional restorative treatments such as bridges and dentures
because the permanent nature of dental implants permits patients to regain most
of the functionality of their natural teeth. Dental implants also may reduce the
progressive atrophy of the jaw often caused by the absence of teeth. The Company
has demonstrated the safety and reliability of its implants at success rates of
over 96% (representing full integration of the implant with the bone) in seven
years of clinical studies involving more than 1,600 implant patients.
 
   
     The Company has experienced significant growth over the last several years.
The Company's net sales increased 22.8% to $19.3 million for the six months
ended June 30, 1997 from $15.7 million for the comparable six month period in
1996. Net sales also increased to $32.2 million for 1996 from $12.7 million for
1992.
    
 
     The American Dental Association estimates that 110 million people in the
United States are missing one or more teeth, representing approximately 40% of
the United States population. Traditional restorative alternatives to address
tooth loss have consisted primarily of dentures and bridges. Since the
introduction of the first modern root form implants in 1982, implants have
continued to gain acceptance as an attractive alternative to dentures and
bridges. Medical Data International ("MDI") estimates that dental implant sales
in the United States exceeded $130 million in 1996 and are expected to grow at a
rate of approximately 6% per year. The Company estimates that sales of dental
implants outside the United States were approximately $250 million in 1996 and
are expected to grow at a rate of approximately 10% per year.
 
     The Company markets its products to dental professionals involved in the
implant procedure, including oral surgeons, periodontists and implantologists
who typically perform the implant surgery, as well as general dentists and
prosthodontists who often prepare the crown or other prosthetic device that is
affixed on top of the
 
                                        3
<PAGE>   5
 
abutment. The Company currently distributes its products in the United States
and Canada through its direct sales force consisting of more than 40 persons,
which the Company believes is the largest North American direct sales force for
dental implant products. The Company markets its products internationally
(outside the United States and Canada) in more than 35 countries through 26
independent distributors who do not sell competing implant products.
 
     The Company's predecessor sold its first dental implant in 1986 and was
acquired by the Company from Bausch & Lomb Incorporated ("Bausch & Lomb") in
November 1996 (the "Acquisition"). In connection with the Acquisition, the
Company incurred $39.5 million of debt and issued $35.2 million of mandatorily
redeemable Preferred Stock. Upon consummation of the Offering, approximately
$43.0 million of debt will be retired and approximately $15.2 million of
Preferred Stock will be redeemed, together with accrued interest and dividends.
The holders of Class A Preferred Stock and Class C Preferred Stock have agreed
to convert the remaining $20.0 million of their Preferred Stock into Common
Stock upon consummation of the Offering, in lieu of exercising their redemption
rights. Certain directors of the Company own or are affiliated with entities
that own a substantial portion of the Preferred Stock issued in the Acquisition.
Accordingly, such directors or their affiliated entities will receive a portion
of the proceeds of the Offering used to redeem the Preferred Stock or will be
issued a portion of the Common Stock to be issued upon the conversion of the
Preferred Stock. Certain key members of the Company's senior management team,
including its Chief Executive Officer, President and Executive Vice President,
Operations, have operated the Company's business since 1990.
 
                                    STRATEGY
 
     The Company's objective is to become the leading worldwide developer,
manufacturer and marketer of dental implants and related products, while
increasing its profitability. The Company believes that over the last three
years, it has been one of the fastest growing participants in the United States
implant market. Furthermore, as a result of the Company's acquisition of the
dental business of Interpore International ("Interpore") in May 1997, the
Company believes its implant unit sales, on a combined basis in the United
States in 1995, exceeded those of any of its competitors. The key elements of
the Company's strategy include the following:
 
     - Increase Market Share in the United States and Foreign Markets. Steri-Oss
has established itself as a worldwide leader in the dental implant market. The
Company intends to capitalize on its reputation for quality products and service
to continue to increase its market share both domestically and internationally.
Increased utilization of the Company's implants by dental professionals is
necessary for continued market penetration. Accordingly, Steri-Oss intends to
increase its involvement in sponsoring and providing educational and training
programs for dental professionals and to expand marketing support to its 26
independent international distributors.
 
     - Continue to Develop Innovative Implant Products. The Company intends to
utilize its expertise in dental implant technology and to work closely with
clinicians to continue to develop new and enhanced dental implants and related
products. New and enhanced products have historically constituted a significant
portion of the Company's net sales. The Company was the first to introduce a
variety of innovative products, including precleaned sterile implants,
hydroxylapatite ("HA") coated threaded implants and a tapered, color-coded
implant system. The Company intends to continue to develop enhanced implant
products to meet evolving market needs, incorporate technological advancements
and satisfy clinicians' preferences.
 
     - Expand into Additional Dental Specialty Markets. The Company intends to
take advantage of its broad distribution channels and strong reputation in the
dental industry to market additional dental specialty products to its customers.
The Company plans to focus on products that enhance the professionals' practices
and address the needs of growing markets, particularly the periodontal market.
In furtherance of this strategy, the Company recently commenced marketing two
products owned and manufactured by third parties, a periodontal tissue
monitoring kit and an HA bone filler for periodontal defects. The Company
intends to acquire, license or distribute additional dental specialty products
and to market these products through its existing distribution channels.
 
                                        4
<PAGE>   6
 
     - Acquire Complementary Dental Implant Businesses, Products and
Technologies. The Company believes that consolidation opportunities exist in the
dental implant market that will enable the Company to increase its penetration
of this market. For example, in May 1997, the Company acquired the dental
operations of Interpore, a manufacturer and distributor of dental implant
products and other periodontal products. The Company intends to continue to
expand its product offerings, distribution channels and market share through
acquisitions in the dental implant market. Potential acquisitions may include
complementary businesses, product lines, distribution rights, technologies or
other assets.
 
     - Continue to Improve Operating Efficiencies. By manufacturing a greater
proportion of its products in-house, the Company has been able to operate more
cost-effectively and benefit from greater economies of scale. Primarily as a
result of actions taken by the Company to reduce manufacturing costs and
increase operating efficiencies, the Company has reduced its cost of sales as a
percentage of net sales to 27.3% for 1996 from 31.7% for 1992. The Company
intends to continue to improve operating efficiencies primarily by expanding and
refining its manufacturing processes.
 
     The Company's principal executive offices are located at 22895 Eastpark
Drive, Yorba Linda, California 92887. The Company's telephone number is (714)
282-6515.
 
                                  THE OFFERING
 
<TABLE>
<S>                                             <C>
Common Stock offered by the Company...........  4,700,000 shares
Common Stock to be outstanding after the        10,933,547 shares (1)
  Offering....................................
Use of Proceeds...............................  The Company intends to use the net proceeds
                                                from the Offering to redeem all outstanding
                                                shares of Class A Preferred Stock, Class B
                                                Preferred Stock and Class C Preferred Stock
                                                that have not converted into Common Stock in
                                                the Preferred Stock Conversion, to repay
                                                indebtedness and for general corporate
                                                purposes, including working capital
                                                requirements. See "Use of Proceeds."
Proposed Nasdaq National Market Symbol........  STRI
</TABLE>
 
- ---------------
 
(1) Excludes (i) 400,000 shares of Common Stock reserved for issuance under the
    1997 Stock Incentive Issuance Plan (the "1997 Plan"), which includes options
    to purchase 235,000 shares of Common Stock that were granted at an exercise
    price equal to the initial public offering price in the Offering and (ii)
    outstanding options to purchase 733,344 shares of Common Stock granted at a
    weighted average exercise price of $0.58 per share. See Note 9 of Notes to
    Consolidated Financial Statements.
 
                                        5
<PAGE>   7
 
                      SUMMARY CONSOLIDATED FINANCIAL DATA
 
    The following summary historical and pro forma consolidated financial data
for the Company and its predecessors should be read in conjunction with
"Management's Discussion and Analysis of Financial Condition and Results of
Operations," the Company's Consolidated Financial Statements and Notes thereto
and the Unaudited Pro Forma Consolidated Financial Statements and Notes thereto
included elsewhere in this Prospectus.
 
<TABLE>
<CAPTION>
                                                                                                    COMPANY
                                          PREDECESSOR(1)                      ----------------------------------------------------
                       ----------------------------------------------------                                 SIX MONTHS ENDED JUNE
                                                                JANUARY 1     NOVEMBER 16     PRO FORMA              30,
                              YEAR ENDED DECEMBER 31,            THROUGH        THROUGH       YEAR ENDED    ----------------------
                       -------------------------------------   NOVEMBER 15,   DECEMBER 31,   DECEMBER 31,   PRO FORMA   PRO FORMA
                        1992      1993      1994      1995         1996           1996         1996(2)       1996(3)     1997(4)
                       -------   -------   -------   -------   ------------   ------------   ------------   ---------   ----------
                                                     (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
<S>                    <C>       <C>       <C>       <C>       <C>            <C>            <C>            <C>         <C>
STATEMENT OF
  OPERATIONS DATA:
 
  Net sales..........  $12,735   $16,845   $22,168   $27,361     $ 28,108       $  4,089       $ 32,197      $15,744     $ 19,334
  Gross profit.......    8,693    11,718    15,502    19,496       20,678          2,733         23,411       11,518       14,186
  Selling, general
    and
    administrative
    expense..........    6,164     8,698    11,393    14,241       14,791          1,929         17,221        8,509       10,966
  Research and
    development
    expense..........    1,218     1,618     1,781     2,225        2,116            352          2,468        1,255        1,322
  Noncash
    compensation
    expense..........       --        --        --        --           --             --             --           --          545
  Income from
    operations.......    1,311     1,402     2,328     3,030        3,771            452          3,722        1,754        1,353
  Interest
    expense..........       45        50        --        --           --          1,065             --           --           --
  Income before
    income taxes.....    1,266     1,352     2,328     3,030        3,771           (613)         3,722        1,754        1,353
  Net income.........  $   760   $   516   $ 1,075   $ 1,458     $  1,919       $   (613)      $  2,233      $ 1,052     $    812
                       =======   =======   =======   =======      =======        =======       ========      =======      =======
  Net income per
    share(5).........                                                                          $   0.19      $  0.09     $   0.07
                                                                                               ========      =======      =======
  Shares outstanding(5)                                                                      11,638,535   11,638,535   11,638,535
</TABLE>
 
   
<TABLE>
<CAPTION>
                                                                                                             AT JUNE 30, 1997
                                                                                                          -----------------------
                                                                                                                          PRO
                                                                                                           ACTUAL     FORMA(6)(7)
                                                                                                          ---------   -----------
<S>                                                                                                       <C>         <C>
BALANCE SHEET DATA:
 
  Cash and cash
    equivalents....                                                                                        $    61      $ 2,408
  Working
    capital........                                                                                          4,549       10,668
  Total assets.....                                                                                         83,406       82,645
  Total long-term
    debt(8)........                                                                                         78,859           --
  Total
    stockholders'
    equity
    (deficit)......                                                                                         (1,146)      77,455
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                                                                                   COMPANY
                                         PREDECESSOR(1)                      ----------------------------------------------------
                      ----------------------------------------------------                                 SIX MONTHS ENDED JUNE
                                                               JANUARY 1     NOVEMBER 16     PRO FORMA              30,
                             YEAR ENDED DECEMBER 31,            THROUGH        THROUGH       YEAR ENDED    ----------------------
                      -------------------------------------   NOVEMBER 15,   DECEMBER 31,   DECEMBER 31,   PRO FORMA   PRO FORMA
                       1992      1993      1994      1995         1996           1996         1996(2)       1996(3)     1997(4)
                      -------   -------   -------   -------   ------------   ------------   ------------   ---------   ----------
                                                                    (IN THOUSANDS)
<S>                   <C>       <C>       <C>       <C>       <C>            <C>            <C>            <C>         <C>
CASH FLOW AND OTHER
  DATA:
 
  EBITDA(9).........  $ 1,492   $ 2,301   $ 3,559   $ 4,566     $  5,395       $    795         $ 6,190    $  2,896       $ 2,797
  Depreciation......      181       161       363       595          712            132             844         352           575
 Amortization(10)...       --       738       868       941          912            211           1,624         790           869
  Capital
    expenditures....      132       560     1,702     1,190        1,957            250           2,207       1,286         1,018
  Cash flow provided
    by (used in):
    Operating
      activities....    2,454       700     1,680     3,313        5,434             82                       2,644         1,184
    Investing
      activities....     (132)     (560)   (1,702)   (1,190)      (1,957)       (58,994)                    (60,030)       (2,755)
    Financing
      activities....   (2,322)     (140)      177    (2,158)      (3,597)        59,132                      58,327         3,373
</TABLE>
    
 
- ---------------
 
 (1) Represents the historical financial data of the Company's predecessor,
     Steri-Oss, Inc. ("S-O"), a wholly-owned subsidiary of Bausch & Lomb. For
     1992, represents the historical financial data of S-O's predecessor.
 
 (2) Includes the results of operations of S-O subsequent to the Acquisition in
     November 1996. The Acquisition was accounted for as a purchase for
     financial reporting purposes. The financial data for the period from
     January 1, 1996 through November 15, 1996 for S-O and from November 16,
     1996 through December 31, 1996 for the Company has been combined and
     adjusted to give effect to the Acquisition, the Preferred Stock Conversion,
     the Offering and the application of the net proceeds of the Offering, as if
     each had occurred on January 1, 1996, to present the pro forma operating
     results for the year ended December 31, 1996.
 
 (3) The pro forma statement of operations data for the six months ended June
     30, 1996 reflects adjustments as if the Acquisition, the Preferred Stock
     Conversion, the Offering and the application of the net proceeds of the
     Offering had occurred on January 1, 1996. The pro forma statement of
     operations data for the six months ended June 30, 1997 reflects adjustments
     as if the Preferred Stock Conversion, the Offering and the application of
     the net proceeds of the Offering had occurred on January 1, 1996. Excludes
     the effect of the extraordinary charge described in footnote 8 below.
 
 (4) Includes the results of operations of the dental business of Interpore
     subsequent to its acquisition in May 1997. This acquisition was accounted
     for as a purchase for financial reporting purposes.
 
 (5) Share and per share data are not considered meaningful since S-O operated
     as a wholly-owned subsidiary of Bausch & Lomb from 1993 through November
     15, 1996. Computed based on weighted average shares outstanding assuming
     the Preferred Stock Conversion and the Offering and the application of the
     net proceeds therefrom were consummated on January 1, 1996. Also includes
     the effect of Common Stock and equivalents issued within one year from the
     filing of the Registration Statement of which this Prospectus is a part at
     prices per share below the initial public offering price, using the
     treasury stock method using an assumed initial public offering price of
     $15.00 per share.
 
   
 (6) The pro forma balance sheet data reflects adjustments as if the Preferred
     Stock Conversion and the Offering and the application of the net proceeds
     therefrom had occurred on June 30, 1997 and includes the effect of an
     extraordinary charge of $7.8 million,
    
 
                                        6
<PAGE>   8
 
   
     net of the related tax benefit, relating to (i) the elimination of deferred
     financing costs of $5.3 million associated with the repayment of the
     Company's 16% Series A Subordinated Note and 14% Series B Subordinated
     Notes (collectively, the "Subordinated Notes") and the Company's secured
     credit facility (the "Bank Facility") with Union Bank of California, N.A.
     ("Union Bank") and First Source Financial LLP and the conversion and/or
     redemption of all mandatorily redeemable Preferred Stock, (ii) the charge
     of $1.5 million related to the Preferred Stock Conversion and (iii) the
     prepayment penalties of $1.0 million incurred in connection with the
     repayment of the Subordinated Notes. See "Unaudited Pro Forma Consolidated
     Financial Data."
    
 
   
 (7) Includes the effect of a compensation charge of $1.3 million related to
     options granted below the fair value per share at the date of grant, which
     options are either fully vested or vest immediately upon consummation of
     the Offering. See "Unaudited Pro Forma Consolidated Financial Data."
    
 
   
 (8) Includes current portion of long-term debt and mandatorily redeemable
     Preferred Stock.
    
 
   
 (9) EBITDA represents earnings before interest, income taxes, depreciation and
     amortization. Management believes EBITDA provides supplemental information
     to enable investors to comparatively analyze the Company's performance
     without the effect of (i) interest expense which will be significantly
     reduced upon repayment of indebtedness following the Offering, and (ii) the
     change in goodwill amortization as a result of the Acquisition. EBITDA may
     not provide an accurate comparison between companies because it is not
     necessarily computed by all companies in an identical manner and certain
     items excluded from EBITDA are significant components necessary to
     understand and assess the Company's financial performance. The use of such
     information is intended only to supplement the conventional income
     statement presentation and is not to be considered as an alternative to net
     income, to represent cash flows for the periods or funds available for
     management's discretionary use or any other indicator of the Company's
     operating performance which is presented in accordance with generally
     accepted accounting principles ("GAAP") above. The computation of EBITDA
     for each of the respective periods shown is as follows (in thousands):
    
 
   
<TABLE>
<CAPTION>
                                                                                                       COMPANY
                                                                                    ---------------------------------------------
                                                   PREDECESSOR                                                       PRO FORMA
                                 ------------------------------------------------                                   SIX MONTHS
                                                                      JANUARY 1     NOVEMBER 16     PRO FORMA          ENDED
                                      YEAR ENDED DECEMBER 31,          THROUGH        THROUGH       YEAR ENDED       JUNE 30,
                                 ---------------------------------   NOVEMBER 15,   DECEMBER 31,   DECEMBER 31,   ---------------
                                  1992     1993     1994     1995        1996           1996           1996        1996     1997
                                 ------   ------   ------   ------   ------------   ------------   ------------   ------   ------
      <S>                        <C>      <C>      <C>      <C>      <C>            <C>            <C>            <C>      <C>
      Income before income
        taxes..................  $1,266   $1,352   $2,328   $3,030      $3,771         $ (613)        $3,722      $1,754   $1,353
      Plus: Interest expense...      45       50       --       --          --          1,065             --          --       --
          Depreciation.........     181      161      363      595         712            132            844         352      575
          Amortization.........      --      738      868      941         912            211          1,624         790      869
                                 ------   ------   ------   ------      ------         ------         ------      ------   ------
      EBITDA...................  $1,492   $2,301   $3,559   $4,566      $5,395         $  795         $6,190      $2,896   $2,797
                                 ======   ======   ======   ======      ======         ======         ======      ======   ======
</TABLE>
    
 
   
       Pro forma EBITDA for the six months ended June 30, 1997 includes the
     effect of a noncash compensation expense in the amount of $545,000.
    
 
   
(10) Pro forma data includes the effect of amortization over a 40 year period of
     $59.2 million of tax-deductible goodwill (approximately $1.5 million
     annually) recorded in connection with the Acquisition.
    
 
                                        7
<PAGE>   9
 
                                  RISK FACTORS
 
     Prospective purchasers of the Common Stock should consider carefully the
following risk factors, in addition to the other information contained in this
Prospectus, before making an investment in the Common Stock.
 
HIGHLY COMPETITIVE INDUSTRY
 
     The dental implant industry is characterized by intense competition.
Steri-Oss competes directly with a number of companies offering dental implants
and related products both in the United States and abroad, including Nobel
Biocare AB, Friatec AG, Implant Innovations, Inc. ("3i") and Sulzer Calcitek
Inc., certain of which have substantially greater financial, marketing, sales,
distribution and development resources than the Company. Such competitors may be
able to devote greater resources to the development, promotion, sale and support
of their products than the Company. Certain of the Company's competitors also
have established a greater international presence than the Company. In several
countries, including Germany and Switzerland, the Company competes with
companies that are based in such countries. The competitors' local presence in
such markets may provide them with a competitive advantage over the Company. In
addition, several competitors in foreign markets sell directly in such markets,
which may be more effective than the Company's indirect distribution channels in
such markets. Increased competition or the failure to compete effectively in the
dental implant industry may result in price reductions, reduced profit margins
and loss of market share, all of which could have a material adverse effect on
the Company's business, financial condition and results of operations.
 
     The Company's products also compete against alternative restorative
treatments such as bridges and dentures, which are generally less expensive to
the patient, are less invasive and can be implemented more quickly. New
restorative technologies may be developed that are as effective as, or more
effective or easier to use than, those offered by the Company, which could
render the Company's products less competitive or obsolete. See
"Business -- Competition."
 
EXTENSIVE GOVERNMENT REGULATION OF MEDICAL DEVICES AND CONTINUING COMPLIANCE
REQUIREMENTS
 
     The Company's products are subject to extensive regulation by the United
States Food and Drug Administration (the "FDA") and certain other federal, state
and local governmental authorities and similar regulatory agencies in other
countries. Such regulations cover the testing, manufacture, labelling,
distribution and promotion of medical devices and record-keeping with respect
thereto. The process of obtaining marketing clearances and approvals from the
FDA for new products or enhancements to existing products can be time-consuming
and expensive, and there is no assurance that such clearances will be granted or
that FDA review will not involve delays adversely affecting the marketing and
sale of products by the Company. Since January 1, 1994, the Company has obtained
34 Section 510(k) premarket notifications ("510(k)") covering a broad range of
products. In the future, the FDA may require the submission of a premarket
approval application ("PMA") for certain dental implants, which approval process
is time-consuming, costly and would result in a diversion of management's
efforts. While the Company has been collecting clinical data to support a
potential PMA, there can be no assurance that the Company would receive a PMA
approval, if required, for its dental implant products on a timely basis, if at
all.
 
   
     Governmental regulation may also prevent or substantially delay the
marketing of the Company's proposed products, cause the Company to undertake
costly procedures and furnish a competitive advantage to certain of the
Company's competitors who have greater financial, administrative and research
and development resources. After approval, the FDA may require post-marketing
approval surveillance programs to monitor the effects of an approved medical
device. FDA approval may be withdrawn for noncompliance with regulatory
standards or the occurrence of unforeseen problems following initial marketing.
In addition, product modifications may require the submission of a new 510(k) or
PMA supplement and future products may require 510(k) clearance or PMA approval.
There can be no assurance that marketing clearances or approvals will be
obtained on a timely basis or at all. Delays in receiving, the failure to
receive or the cost of complying
    
 
                                        8
<PAGE>   10
 
with such clearances or approvals could have a material adverse effect on the
Company's business, financial condition and results of operations.
 
     The Company is also subject to periodic inspection by the FDA and state
agencies such as the Food and Drug Branch of the California Department of Health
Services to determine whether the Company is in compliance with various
regulations relating to medical device manufacturing, including the FDA's
Quality System Regulations ("QSR"), formerly known as the Good Manufacturing
Practices regulations, which govern manufacturing, testing, quality control and
product labeling of medical devices. In connection with the FDA's inspection of
the Company's facilities in April 1997, the FDA issued a warning letter to the
Company citing the Company's failure to comply with certain provisions of the
current QSR regulations. The warning letter did not prohibit the Company from
obtaining premarket clearance or approval for new products nor did it require
the Company to withdraw or remove any of its products from the market. While the
Company believes that it has taken appropriate corrective actions to address
each of the violations cited in the warning letter, there can be no assurance
that the FDA will issue a compliance letter on a timely basis, if at all. Any
failure by the Company to remedy the citations in the warning letter to the
satisfaction of the FDA could prevent or significantly limit the Company's
ability to market its products in the United States until such citations have
been corrected to the satisfaction of the FDA and result in the recall or
seizure of products, the total or partial suspension of production, civil
penalties, fines or criminal prosecution.
 
     The Company must comply with similar registration requirements of foreign
governments and with import and export regulations when distributing its
products to foreign nations. Each foreign country's regulatory requirements for
product approval and distribution are unique and may require the expenditure of
substantial time, money and effort to obtain and maintain. The regulation of
medical devices in a number of such jurisdictions, particularly in the European
Union, continues to develop and there can be no assurance that new laws or
regulations will not have a material adverse effect on the Company's business,
financial condition and results of operations. Noncompliance with state, local,
federal or foreign regulatory requirements can result in fines, injunctions,
civil penalties, recall or seizure of products, total or partial suspension of
production, delay or denial or withdrawal of premarket clearance or approval of
devices and criminal prosecution. See "Business -- Government Regulation."
 
RISKS ASSOCIATED WITH ACQUISITIONS; FUTURE CAPITAL REQUIREMENTS
 
     The Company's business strategy includes the expansion of its product
offerings, distribution channels, and market share through acquisitions.
Acquisitions involve numerous risks, such as difficulties in the assimilation of
the operations, products and personnel of the acquired companies, the ability to
manage effectively geographically remote units, the diversion of management's
attention from other business concerns, risks of entering markets in which the
Company has limited or no direct experience, and the potential loss of key
employees of the acquired companies. In addition, acquisitions may result in
dilutive issuances of equity securities, the incurrence of additional debt,
reduction of existing cash balances, amortization expenses related to goodwill
and other intangible assets and other effects on the Company that may materially
adversely affect the Company's results of operations. Although management
expects to analyze any opportunity carefully before committing the Company's
resources, no assurances can be given as to the effect of any acquisition on the
Company's business, financial condition and results of operations.
 
     The Company expects to continue to expend additional funds to pursue
acquisition opportunities and to expand its operations, particularly its
manufacturing capabilities and marketing efforts. After the net proceeds of the
Offering are applied to repay indebtedness and to redeem all shares of Preferred
Stock not converting into Common Stock, the Company expects that no indebtedness
will remain outstanding on a pro forma basis under the Bank Facility and
additional funds will be available for borrowings under either the existing Bank
Facility or under the Company's proposed bank facility, subject to certain
restrictions and limitations. The Company's future capital requirements and the
adequacy of available funds will depend on numerous factors that are difficult
to predict, including the timing and cost of acquisitions. If cash from
operations and available funds under the Bank Facility are insufficient to meet
the Company's capital needs in the future, the Company will be required to
obtain additional funds through equity or debt financings or through other
sources. The Bank Facility currently limits the Company's ability to incur any
other debt. There can be no assurance that
 
                                        9
<PAGE>   11
 
additional funding, if necessary, will be available on acceptable terms, if at
all. If adequate funds are not available, the Company may be required to forego
strategic acquisitions or delay, reduce or eliminate certain aspects of its
operations, which could have a material adverse effect on the Company's
business, financial condition, results of operations and cash flows. See "Use of
Proceeds," "Management's Discussion and Analysis of Financial Condition and
Results of Operations -- Liquidity and Capital Resources" and
"Business -- Strategy."
 
DEPENDENCE ON INDEPENDENT INTERNATIONAL DISTRIBUTORS
 
     In addition to utilizing a direct sales force in North America, the Company
markets and sells its products through 26 independent distributors in more than
35 foreign countries. Approximately 41.2% and 41.1% of the Company's net sales
during 1996 and for the six month period ended June 30, 1997, respectively, were
generated in international markets. The Company anticipates that a significant
percentage of its net sales will come from international markets in the future.
The Company relies on its international distributors to obtain any necessary
regulatory approvals in the foreign countries in which they operate. The Company
does not have any long-term distribution agreements with any of its
distributors, and there can be no assurance that the Company's distributors will
continue to market the Company's products or have the financial stability to
assure their continuing presence in their respective markets. A distributor's
inability or unwillingness to perform its obligations, or a disruption in the
Company's relationship with a distributor, could result in a substantial delay
in the Company's international distribution efforts in the distributor's
applicable territory. There can be no assurance that the Company will be able to
replace any of its current distributors or that any such replacement will be
able to obtain the necessary regulatory approvals to conduct business in the
applicable territory. There can also be no assurance that the Company can retain
qualified distributors in any additional territories targeted by the Company. As
a result, there can be no assurance that the Company will maintain or increase
its market share for dental implants in international markets. See "Business --
Customers, Marketing and Sales."
 
RISKS RELATING TO INTERNATIONAL OPERATIONS
 
     International operations involve a number of significant risks, including,
but not limited to, governmental regulations, export license requirements,
political instability, trade restrictions, changes in tariffs, difficulties in
managing international operations, import restrictions and fluctuations in
foreign currency exchange rates. Although the Company's international sales are
currently denominated in United States dollars, fluctuations in currency
exchange rates have, from time to time, caused the Company's products to become
relatively more expensive to customers in a particular country, leading to a
reduction in the Company's net sales or profitability in that country.
Furthermore, future international activity may result in foreign currency
denominated sales and, in such event, gains and losses on the conversion to
United States dollars of accounts receivable and accounts payable arising from
international operations may contribute to fluctuations in the Company's results
of operations. There can be no assurance that fluctuations in currency rates
will not adversely impact the Company's business, financial condition and
results of operations in the future. The international nature of the Company's
business subjects it and its distributors to the laws and regulations of the
foreign jurisdictions in which they operate and in which the Company's products
are sold. See "Business -- Government Regulation."
 
DEPENDENCE ON SIGNIFICANT CUSTOMER
 
     Metaux Precieux Metalor Deutschland GmbH ("Metalor"), a distributor of
dental alloys and instruments, accounted for approximately 8.2% of the Company's
net sales during 1996 and 10.6% during the six month period ended June 30, 1997.
In 1990, the Company entered into an exclusive one year distribution agreement
with Metalor to distribute the Company's products in Germany and the
Netherlands, which agreement automatically renews for successive one year terms
unless either the Company or Metalor gives prior notice of its intention not to
renew the agreement for an additional term. The Company also entered into
similar exclusive distribution agreements with certain affiliates of Metalor who
distribute the Company's products in France, Switzerland and the United Kingdom.
Metalor and its three affiliates collectively
 
                                       10
<PAGE>   12
 
accounted for approximately 12.1% of the Company's net sales during 1996 and
13.9% of the Company's net sales during the six months ended June 30, 1997. If
Metalor and its affiliates were to cease marketing the Company's products for
any reason, the Company's business, financial condition and results of
operations would be materially and adversely affected. See
"Business -- Customers, Marketing and Sales."
 
PRODUCT LIABILITY RISKS
 
     The nature of the Company's business subjects the Company to the risk of
product liability claims that may involve significant defense costs. From time
to time, the Company has been the subject of such claims. Bausch & Lomb has
agreed to indemnify the Company up to an aggregate amount of $28.5 million
against any claims and losses from defects in the design, manufacture or
production of any product sold by S-O prior to the Acquisition. While the
Company currently has one product liability claim pending, Bausch & Lomb is
contractually obligated to indemnify the Company for this claim. There can be no
assurance that product liability claims will not be asserted against the Company
in the future. Although the Company maintains product liability insurance, there
can be no assurance that this coverage will be adequate to protect the Company
against future product liability claims. In addition, product liability
insurance is expensive and there can be no assurance that, in the future,
product liability insurance will be available to the Company in amounts or on
terms satisfactory to the Company, if at all. A successful product liability
claim or series of claims brought against the Company in excess of its insurance
coverage could have a material adverse effect on the Company's business,
financial condition and results of operations. See "Business -- Product
Liability and Legal Proceedings; Insurance."
 
FLUCTUATIONS IN QUARTERLY OPERATING RESULTS
 
     The Company has experienced and may in the future continue to experience
significant fluctuations in revenues and operating results from quarter to
quarter as a result of a number of factors including, without limitation,
competition; changes in regulatory requirements or other regulatory issues; the
volume and timing of orders from, and shipments to, international distributors;
market acceptance of the Company's products; changes in pricing policies or
price reductions by the Company or its competitors; variations in the Company's
distribution channels or the mix of product sales; the timing of new product
announcements and product introductions by the Company or its competitors;
product obsolescence resulting from new product introductions or changes in
customer demand; expenses associated with the acquisition of technologies or
businesses and currency fluctuations. While the Company engages in price
discounting from time to time, significant discounts in a particular quarter
could adversely affect the results of operations for such quarter. In addition,
significant and continuing discounts due to competition or other factors could
adversely affect the Company's business, financial condition and results of
operations. The Company has from time to time experienced decreased net sales in
the third quarter of each year when compared to the second quarter due in part
to fewer implant procedures performed during the summer vacation months. The
Company has also experienced flat to slightly decreased net sales in the first
quarter of each year when compared to the prior fourth quarter due in part to
some increases in net sales during the fourth quarter largely as a result of the
Company's increased marketing activities in the latter portion of the year. The
impact of the foregoing factors may cause the Company's operating results to be
below the expectations of public market analysts and investors. In such event,
the price of the Company's Common Stock could be materially adversely affected.
Quarterly results are not necessarily indicative of future performance for any
particular period, and there can be no assurance that the Company will attain or
sustain growth in net sales and profitability on a quarterly or annual basis.
See "Management's Discussion and Analysis of Financial Condition and Results of
Operations."
 
UNCERTAIN MARKET ACCEPTANCE; LIMITED INSURANCE COVERAGE
 
     Dental implants have historically constituted a small percentage of the
total market for dental restorative products and represent a relatively new form
of dental restorative treatment. The dental implant procedure is invasive and
typically takes three to six months to complete, and may take up to nine months
in certain circumstances. This procedure also involves several consultations
with the patient's dentist and one or more surgical procedures. In addition, in
the United States and most other countries, dental implants and related
 
                                       11
<PAGE>   13
 
procedures generally are not covered under private or government sponsored
health care plans, or, if covered, are subject to a cap on coverage that only
covers a portion of the cost to the patient. Many competing products, such as
bridges and dentures, are covered under such plans and are, in general, less
expensive than dental implants. There can be no assurance concerning the extent
to which the Company's implant products will be reimbursed under health care
plans in the future. The absence of insurance coverage and the cost of implants
may adversely impact the market for dental implants. Due to the foregoing
factors, there can be no assurance that the demand for implant products such as
the Company's will continue at current levels or will increase relative to the
demand for alternative restorative products. See "Business -- Industry
Background" and "-- Customers, Marketing and Sales."
 
RISK OF INTERRUPTION OF MANUFACTURING
 
     The Company's manufacturing facilities include a Class 10,000 clean room
and extensive specialized equipment, and are subject to the current QSR
regulations. The cutting, machining and initial cleaning of the Company's
products take place at leased facilities a short distance from the Company's
headquarters in Yorba Linda, California. Final cleaning, sterilization, assembly
(in certain circumstances), packaging, coating and testing take place at the
Company's headquarters. If a disaster (such as an earthquake or fire) were to
destroy or significantly damage its facilities, the Company would need to repair
its existing facilities or develop a new facility and obtain the necessary
regulatory approvals of the facility, which could take a substantial period of
time. Customer orders would have to be supplied from limited inventory. While
the Company has business interruption insurance to cover a portion of this loss,
such insurance would not compensate the Company for the loss of opportunity and
the potential adverse impact on relations with existing customers created by an
inability to deliver its products. In addition, certain of the leases for the
Company's manufacturing facilities expire in December 1997 or can be terminated
on relatively short notice. The loss of the Company's manufacturing capability
from a disaster or the untimely termination of any of the leases for the
Company's manufacturing facilities would have a material adverse effect on the
Company's business, financial condition and results of operations. See
"Business -- Manufacturing."
 
DEPENDENCE ON PROPRIETARY RIGHTS
 
     The Company relies to some extent on proprietary technology, which it
protects primarily through trade secret and other intellectual property laws,
proprietary know-how, licensing arrangements, patents and non-disclosure
agreements. The Company currently holds five United States patents relating to
its products and has applications pending for seven additional United States
patents. In addition, the Company currently licenses a number of patents
relating to the DIA Anatomic Abutment and Bio-Esthetic Abutment systems and the
Immediate Impression Implant. There can be no assurance that any future patents
or licenses will be issued, that any issued patents or other intellectual
property rights of the Company will provide meaningful protection for the
Company's proprietary technology or that the steps taken by the Company to
protect its proprietary technologies will be adequate to prevent
misappropriation by third parties in the United States or abroad. In addition,
there can be no assurances that infringement claims will not be asserted against
the Company in the future. Any such claims, with or without merit, could be
time-consuming, result in costly litigation and a diversion of management's
efforts, cause product shipment delays or require the Company to enter into
royalty or licensing agreements. Such royalty or licensing agreements, if
required, may not be available on terms acceptable to the Company, if at all.
Furthermore, if infringement was established, the Company could be required to
pay damages or be enjoined from making, using or selling the infringing product.
Any of the foregoing could have a material adverse effect upon the Company's
business, financial condition and results of operations. See
"Business -- Proprietary Rights."
 
DEPENDENCE UPON KEY PERSONNEL
 
     The Company's success depends in significant part upon the continued
service of its key management and marketing personnel, particularly its
executive officers. The Company is dependent on its ability to identify, hire,
train, integrate, retain and motivate high quality personnel. The industry in
which the Company competes is characterized by intense competition for skilled
personnel. The Company's employees may
 
                                       12
<PAGE>   14
 
terminate their employment with the Company at any time. Accordingly, there can
be no assurance that any of the Company's current employees will continue to
work for the Company. Loss of services of key employees could have a material
adverse effect on the Company's business, financial condition and results of
operations. See "Management."
 
CONTROL BY DIRECTORS, EXECUTIVE OFFICERS AND AFFILIATED ENTITIES
 
     The Company's directors, executive officers and certain of their affiliates
will, in the aggregate, beneficially own approximately 47.8% of the Company's
outstanding shares of Common Stock following the completion of the Offering. The
1818 Fund II, L.P., which is represented by three members of the Company's Board
of Directors, Messrs. Cowen, Grist and Long, will beneficially own 38.0% of the
Company's outstanding shares of Common Stock following the completion of the
Offering. These stockholders, if acting together, would be able to significantly
influence all matters requiring approval by the stockholders of the Company,
including the election of directors and the approval of mergers or other
business combination transactions. See "Certain Transactions" and "Principal
Stockholders."
 
BENEFITS OF OFFERING TO AFFILIATES OF CERTAIN UNDERWRITERS AND THE COMPANY
 
   
     The Offering will provide several significant benefits to affiliates of
certain Underwriters and the Company. In particular, 17,471 shares of Class A
Preferred Stock and 2,527 shares of Class C Preferred Stock will be
automatically converted into an aggregate of 1,433,547 shares of Common Stock
upon consummation of the Offering pursuant to the Preferred Stock Conversion.
The conversion price will be equal to 93% of the initial public offering price
in the Offering. In addition, substantially all of the net proceeds from the
Offering will be used to (i) redeem all shares of Class A Preferred Stock and
Class C Preferred Stock not converting into Common Stock in the Preferred Stock
Conversion and (ii) repay the Company's indebtedness under its Subordinated
Notes and the Bank Facility. The sole holder of the Class A Preferred Stock is
The 1818 Fund II, L.P. Holders of the Class C Preferred Stock include (i)
Anvers, L.P., an affiliate of Furman Selz LLC, one of the Underwriters, (ii)
Richard Gumer, a Managing Director of Furman Selz LLC and (iii) Henry Wendt and
Douglas E. Rogers, directors of the Company and Managing Directors of DLJ
Merchant Banking II, Inc., which is an affiliate of Donaldson, Lufkin & Jenrette
Securities Corporation ("DLJ"), one of the Underwriters. Holders of the
Company's Subordinated Notes include Exeter Equity Partners, L.P., Exeter
Venture Lenders, L.P. and The Equitable Life Assurance Society of the United
States ("Equitable Life"), a wholly owned subsidiary of The Equitable Companies
Incorporated, which owns approximately 77% of DLJ. See "Use of Proceeds" and
"Certain Transactions."
    
 
NO PRIOR PUBLIC 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 be sustained for the Common Stock after the Offering or that the market price
of the Common Stock will not decline below the initial public offering price.
The initial public offering price will be determined by negotiations among the
Company and the representatives of the Underwriters. See "Underwriting" for a
discussion of the factors to be considered in determining the initial public
offering price. The stock market has experienced extreme price and volume
fluctuations that have, in the past, particularly affected the market price for
many medical device companies, and that have, on occasion, been unrelated to the
operating performance of these companies. These broad market fluctuations, as
well as other factors, may adversely affect the market price of the Company's
Common Stock. The Company's net sales or results of operations in future
quarters may be below the expectations of public market securities analysts and
investors. In such event, the price of the Company's Common Stock would likely
decline, perhaps substantially. Furthermore, factors such as announcements of
acquisitions; general economic conditions; quarterly fluctuations in financial
results and market conditions for stocks similar to that of the Company; new
products or product enhancements by the Company or its competitors; developments
in patents or other intellectual property rights; changes in the Company's
relationships with distributors and suppliers and other factors could have
significant impact on the market price of the Common Stock.
 
                                       13
<PAGE>   15
 
ENVIRONMENTAL REGULATIONS
 
     The Company is subject to a variety of governmental regulations relating to
the use, storage, discharge, handling and disposal of toxic or other hazardous
substances, chemicals, materials or waste. Small amounts of hazardous substances
are used in the Company's manufacturing process, and the Company contracts with
third parties for the disposal of such waste. Any failure to comply with current
or future regulations could result in civil penalties or criminal fines being
imposed on the Company, or its officers, directors or employees, suspension of
production, alteration of its manufacturing process or cessation of operations.
Such regulations could require the Company to acquire expensive remediation or
abatement equipment or to incur expenses to comply with environmental
regulations. Any failure by the Company to properly manage the use, disposal or
storage of, or adequately restrict the release of, hazardous or toxic substances
could subject the Company to significant liabilities. See
"Business -- Manufacturing."
 
POTENTIAL ANTI-TAKEOVER EFFECTS OF DELAWARE LAW AND THE COMPANY'S CERTIFICATE OF
INCORPORATION AND BYLAWS
 
     The Company's Board of Directors has the authority, without further action
by the stockholders, to issue from time to time up to 5,000,000 shares of
Preferred Stock in one or more classes or series, and to fix the rights and
preferences of such Preferred Stock. The Company's Certificate of Incorporation,
as amended, (the "Certificate") provides for staggered terms for members of the
Board of Directors and does not permit stockholders to act without a meeting.
The Company is also subject to provisions of Delaware corporate law that,
subject to certain exceptions, will prohibit the Company from engaging in any
"business combination" with a person who, together with affiliates and
associates, owns 15% or more of the Company's Common Stock (an "Interested
Stockholder") for a period of three years following the time that such person
became an Interested Stockholder, unless the business combination is approved in
a prescribed manner. In addition, the Company's bylaws, as amended (the
"Bylaws"), establish an advance notice procedure for stockholder proposals and
for nominating candidates for election as directors. These provisions of
Delaware law and of the Company's Certificate and Bylaws may have the effect of
delaying, deterring or preventing a change in control of the Company, may
discourage bids for the Common Stock at a premium over the prevailing market
price and may adversely affect the market price, and the voting and other rights
of the holders, of the Common Stock. See "Description of Capital Stock."
 
SHARES ELIGIBLE FOR FUTURE SALE
 
   
     Sales of substantial amounts of Common Stock in the public market after the
Offering could adversely affect the market price of the Common Stock and the
ability of the Company to raise additional capital. Upon the completion of the
Offering, the Company will have a total of 10,933,547 shares of Common Stock
outstanding, of which only the 4,700,000 shares offered hereby will be freely
tradeable without restriction under the Securities Act of 1933, as amended (the
"Securities Act"). All of the remaining 6,233,547 shares are "restricted
securities" as defined by Rule 144 promulgated under the Securities Act, of
which 4,800,000 shares will be eligible for sale in the public market in
reliance on Rule 144 (subject to the volume and other applicable restrictions of
Rule 144) commencing 90 days following the date of this Prospectus. The holders
of 4,750,000 of such shares, however, have agreed not to dispose of their shares
until 180 days after the date of this Prospectus. Upon the consummation of the
Offering, approximately 968,344 shares will be issuable upon exercise of
outstanding options. Following the Offering, the Company intends to file a
registration statement covering shares of Common Stock reserved for issuance
under outstanding options and under the 1997 Plan. Subject to Rule 144 volume
limitations applicable to affiliates, such shares will be available for sale in
the open market at the time they are exercised by the holder thereof. See
"Management -- Compensation Plans and Arrangements," "Principal Stockholders"
and "Shares Eligible for Future Sale."
    
 
RISK OF SUBSTANTIAL DILUTION
 
     Purchasers of the Common Stock in the Offering will suffer an immediate and
substantial dilution of $13.62 per share in the pro forma net tangible book
value of the Common Stock from the initial public offering price. Moreover, to
the extent outstanding options or warrants to purchase the Company's Common
Stock are exercised in the future, there will be further dilution. See
"Dilution."
 
                                       14
<PAGE>   16
 
                                USE OF PROCEEDS
 
     The net proceeds to be received by the Company from the sale of the
4,700,000 shares of Common Stock offered hereby, after deducting underwriting
discounts and commissions and estimated offering expenses payable by the
Company, are estimated to be approximately $64.9 million ($74.7 million if the
Underwriters' over-allotment option is exercised in full), assuming an initial
public offering price of $15.00 per share.
 
     The Company intends to use approximately $4.5 million of the net proceeds
from the Offering to redeem 4,529 shares of Class A Preferred Stock,
approximately $10.0 million to redeem 10,000 shares of Class B Preferred Stock
and approximately $658,000 to redeem 658 shares of Class C Preferred Stock. The
remaining 17,471 shares of Class A Common Stock and 2,527 shares of Class C
Common Stock will convert into Common Stock in the Preferred Stock Conversion
upon consummation of the Offering. The Company also intends to use approximately
$12.8 million of the net proceeds of the Offering to repay the Subordinated
Notes. Assuming the Offering closes on October 31, 1997, the Company estimates
that it will be required to pay approximately $2.9 million of accrued dividends
on the Preferred Stock, approximately $531,000 of accrued interest on the
Subordinated Notes and the Bank Facility and approximately $1.8 million of
prepayment penalties in connection with the early retirement of the Subordinated
Notes. Interest on the Subordinated Notes is payable in quarterly installments
and the outstanding principal amounts are due and payable in May 2003. The
proceeds from the Subordinated Notes were used to fund the Acquisition in
November 1996. See "Certain Transactions."
 
   
     The Company intends to use any remaining net proceeds of the Offering to
repay the outstanding indebtedness under the Bank Facility, which includes an
$18.3 million revolving credit line, $7.5 million term loan, $5.0 million
working capital line (of which $3.4 million was outstanding at June 30, 1997)
and $3.0 million capital expenditure line (of which $1.3 million was outstanding
at June 30, 1997). To the extent the proceeds of the Offering are insufficient
to repay all outstanding indebtedness, a portion of the working capital line may
remain outstanding after the Offering. Interest accrues on such indebtedness as
follows: (i) the reference rate announced by the First Bank of Chicago as its
base rate (the "Reference Rate") plus 1.5% per annum or the LIBOR rate plus 3.0%
per annum on the revolving credit line, (ii) the Reference Rate plus 2.0% per
annum or the LIBOR rate plus 3.75% per annum on the term loan, (iii) the
Reference Rate plus 1.5% per annum or the LIBOR rate plus 2.75% per annum on the
working capital line and (iv) the Reference Rate plus 1.5% per annum or the
LIBOR rate plus 3.0% per annum on the capital expenditure line. The outstanding
principal amounts on the revolving credit line, term loan, working capital line
and capital expenditure line are due on November 15, 2001, November 15, 2002,
November 15, 1999 and November 15, 2002, respectively. The proceeds from the
capital expenditure line were used to fund the Company's acquisition of certain
manufacturing equipment, including the Computer Numerical Controlled ("CNC")
machines. The proceeds of the working capital line were used for general working
capital purposes, and approximately $1.5 million of the revolving credit line
was used to fund the acquisition of Interpore. Substantially all of the
remaining proceeds of the Bank Facility were used to fund the Acquisition in
November 1996.
    
 
     Any remaining proceeds from the Offering will be used for working capital
and other general corporate purposes. Pending the uses outlined above, the net
proceeds are expected to be invested in short-term, interest-bearing investment
grade or United States government securities.
 
                                DIVIDEND POLICY
 
     The Company has never declared or paid a cash dividend on its Common Stock.
The Company currently intends to retain earnings to finance its operations and
future growth and does not anticipate paying any cash dividends on its Common
Stock in the foreseeable future. The Company's Bank Facility and the
Subordinated Notes prohibit, and the Company's proposed bank facility may limit,
the payment of dividends without the consent of the lenders thereunder.
 
                                       15
<PAGE>   17
 
                                 CAPITALIZATION
 
     The following table sets forth the actual and pro forma capitalization of
the Company as of June 30, 1997. See "Use of Proceeds," "Unaudited Pro Forma
Consolidated Financial Data" and the Consolidated Financial Statements and Notes
thereto included elsewhere in this Prospectus.
 
   
<TABLE>
<CAPTION>
                                                                         AS OF JUNE 30, 1997
                                                                       ------------------------
                                                                       ACTUAL      PRO FORMA(1)
                                                                       -------     ------------
                                                                            (IN THOUSANDS)
<S>                                                                    <C>         <C>
Cash and cash equivalents............................................  $    61       $  2,408
                                                                       =======       ========
Long-term debt (including current portion)(2):
  Bank Facility......................................................  $30,376             --
  16% Series A Subordinated Notes....................................   10,168             --
  14% Series B Subordinated Notes....................................    2,501             --
  Class A 8.8% Cumulative Redeemable Preferred Stock, $.0001 par
     value, 100,000 shares authorized; 22,000 shares issued and
     outstanding actual; and no shares issued and outstanding pro
     forma...........................................................   22,161             --
  Class B 8.0% Cumulative Convertible Redeemable Preferred Stock,
     $.0001 par value, 10,000 shares authorized, issued and
     outstanding actual; and no shares issued and outstanding pro
     forma...........................................................   10,500             --
  Class C 8.0% Junior Cumulative Redeemable Preferred Stock, $.0001
     par value, 3,200 shares authorized, 3,185 shares issued and
     outstanding actual; and no shares issued and outstanding pro
     forma...........................................................    3,153             --
 
Stockholder's equity (deficit):
  Common Stock, $.0001 par value, 35,000,000 shares authorized;
     50,000(3) issued and outstanding actual; and 10,933,547(4)
     shares issued and outstanding pro forma.........................       --       $      1
  Additional paid-in capital.........................................    2,446         90,134
     Accumulated deficit.............................................   (3,592)       (12,679)(5)(6)
                                                                       -------       --------
          Total stockholders' equity (deficit).......................   (1,146)        77,455
                                                                       -------       --------
          Total capitalization.......................................  $77,713       $ 77,455
                                                                       =======       ========
</TABLE>
    
 
- ---------------
 
(1) Gives effect to (i) the conversion of 17,471 shares of Class A Preferred
    Stock and 2,527 shares of Class C Preferred Stock into an aggregate of
    1,433,547 shares of Common Stock and (ii) the Offering and the application
    of the estimated proceeds therefrom. See "Use of Proceeds" and "Unaudited
    Pro Forma Consolidated Financial Data."
 
(2) Net of unamortized debt discount.
 
(3) Excludes 4,750,000 shares of Common Stock issuable upon the exercise of
    outstanding warrants, 733,344 shares of Common Stock issuable upon the
    exercise of outstanding options and 1,433,547 shares of Common Stock
    issuable in connection with the Preferred Stock Conversion.
 
(4) Excludes 968,344 shares of Common Stock issuable upon the exercise of
    outstanding options.
 
   
(5) Includes the effect of an extraordinary charge of $7.8 million, net of
    related tax benefit, relating to (i) the elimination of deferred financing
    costs of $5.3 million associated with the repayment of the Subordinated
    Notes and the Bank Facility and the conversion and/or redemption of all
    mandatorily redeemable Preferred Stock, (ii) the charge of $1.5 million
    related to the Preferred Stock Conversion, and (iii) the prepayment
    penalties of $1.0 million incurred in connection with the repayment of the
    Subordinated Notes.
    
 
   
(6) Includes the effect of a compensation charge of $1.3 million related to
    options granted below the fair value per share at the date of grant, which
    options are either fully vested or vest immediately upon consummation of the
    Offering.
    
 
                                       16
<PAGE>   18
 
                                    DILUTION
 
     As of June 30, 1997, the net tangible book value (deficit) of the Company
was approximately $(65,913,000), or $(13.73) per share of Common Stock based
upon 4,800,000 shares of Common Stock outstanding. "Net tangible book value" per
share represents the amount of total tangible assets of the Company reduced by
the amount of its total liabilities, divided by the number of shares of Common
Stock outstanding. After giving effect to the conversion of 17,471 shares of
Class A Preferred Stock and 2,527 shares of Class C Preferred Stock having an
aggregate liquidation preference of approximately $20.0 million into 1,433,547
shares of Common Stock, the pro forma net tangible book value (deficit) of the
Company as of June 30, 1997 before the Offering, would have been $(45,913,000),
or $(7.37) per share of Common Stock. After giving effect to the sale of
4,700,000 shares of Common Stock offered by the Company hereby and the receipt
of the net proceeds of $64,900,000 therefrom at an assumed initial public
offering price of $15.00 per share, the pro forma net tangible book value of the
Company as of June 30, 1997 would have been approximately $15,072,000, or $1.38
per share of Common Stock. This represents an immediate increase in net tangible
book value of $15.11 per share to existing stockholders and an immediate
dilution of $13.62 per share to new investors. The following table illustrates
this per share dilution:
 
<TABLE>
    <S>                                                                 <C>         <C>
    Assumed initial public offering price per share...................              $15.00
      Net tangible book value (deficit) per share before the
         Offering.....................................................  $(13.73)
      Increase per share attributable to conversion of Preferred
         Stock........................................................     6.36
                                                                         ------
    Pro forma net tangible book value per share before the Offering...    (7.37)
      Increase per share attributable to new investors................     8.75
                                                                         ------
    Pro forma net tangible book value per share after the Offering....                1.38
                                                                                    ------
    Dilution per share to new investors...............................              $13.62
                                                                                    ======
</TABLE>
 
     As of June 30, 1997, options to purchase an aggregate of 733,344 shares of
Common Stock were outstanding at a weighted average exercise price of $0.58 per
share. The computations in the foregoing table assume no exercise of these stock
options. To the extent these options or warrants are exercised, there will be
further dilution to new investors. See Note 9 of Notes to Consolidated Financial
Statements.
 
     The following table summarizes, on a pro forma basis as of June 30, 1997,
the differences between the number of shares of Common Stock purchased from the
Company, the total consideration paid and the average price per share paid by
existing stockholders and by new investors purchasing shares in the Offering
(assuming an initial public offering price of $15.00 per share and before
deducting underwriting discounts and commissions and estimated offering
expenses).
 
<TABLE>
<CAPTION>
                                   SHARES PURCHASED          TOTAL CONSIDERATION        AVERAGE
                                ----------------------     -----------------------       PRICE
                                  NUMBER       PERCENT       AMOUNT        PERCENT     PER SHARE
                                ----------     -------     -----------     -------     ---------
    <S>                         <C>            <C>         <C>             <C>         <C>
    Existing stockholders.....   6,233,547       57.0%     $20,000,960       22.1%      $  3.21
    New investors.............   4,700,000       43.0       70,500,000       77.9         15.00
                                ----------      -----      -----------      -----
              Total...........  10,933,547      100.0%     $90,500,960      100.0%
                                ==========      =====      ===========      =====
</TABLE>
 
                                       17
<PAGE>   19
 
                UNAUDITED PRO FORMA CONSOLIDATED FINANCIAL DATA
 
   
     The following unaudited condensed consolidated pro forma financial data
(the "Unaudited Pro Forma Financial Data") as of June 30, 1997 and for the six
months ended June 30, 1996 and 1997 is prepared from the application of pro
forma adjustments to data derived from the unaudited historical consolidated
financial statements of the Company. The unaudited condensed consolidated pro
forma financial data for the year ended December 31, 1996 is prepared from the
application of pro forma adjustments to data derived from the audited historical
consolidated financial statements for the period from January 1 through November
15, 1996 of the Company's predecessor, S-O, a wholly-owned subsidiary of Bausch
& Lomb, and the period from November 16, 1996 through December 31, 1996 of the
Company. The unaudited pro forma condensed consolidated statement of operations
for the six months ended June 30, 1996 and 1997 and the year ended December 31,
1996 gives effect to: (i) the Acquisition, (ii) the Preferred Stock Conversion
and (iii) the Offering and application of the net proceeds therefrom, as if each
transaction had occurred on January 1, 1996. The unaudited pro forma condensed
consolidated balance sheet gives effect to (ii) and (iii) as if each had
occurred on June 30, 1997. The adjustments are described in the accompanying
footnotes. The Unaudited Pro Forma Financial Data does not purport to represent
what the Company's results of operations actually would have been if those
transactions had been consummated on the date or for the periods indicated, or
what such results will be for any future date or for any future period. The
Unaudited Pro Forma Financial Data should be read in conjunction with
"Management's Discussion and Analysis of Financial Condition and Results of
Operations" and the Consolidated Financial Statements and Notes thereto included
elsewhere in this Registration Statement.
    
 
       UNAUDITED CONDENSED CONSOLIDATED PRO FORMA STATEMENT OF OPERATIONS
                      FOR THE YEAR ENDED DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
                                      JAN. 1,      NOV. 16,
                                       1996          1996
                                      THROUGH       THROUGH      COMBINED
                                     NOV. 15,      DEC. 31,     YEAR ENDED
                                       1996          1996      DECEMBER 31,   ACQUISITION      OFFERING
                                   (PREDECESSOR)   (COMPANY)       1996       ADJUSTMENTS     ADJUSTMENTS     PRO FORMA
                                   -------------   ---------   ------------   -----------     -----------     ----------
                                                      (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
<S>                                <C>             <C>         <C>            <C>             <C>             <C>
STATEMENT OF OPERATIONS DATA:
Net sales........................     $28,108       $ 4,089      $ 32,197       $               $             $   32,197
Cost of sales....................       7,430         1,356         8,786                                          8,786
                                      -------       -------      --------       -------         -------       ----------
Gross profit.....................      20,678         2,733        23,411                                         23,411
Selling, general and
  administrative expense.........      14,791         1,929        16,720           501(1)                        17,221
Research and development
  expense........................       2,116           352         2,468                                          2,468
Interest expense.................                     1,065         1,065         7,612(2)       (8,677)(3)           --
                                      -------       -------      --------       -------         -------       ----------
Income (loss) before income
  taxes..........................       3,771          (613)        3,158        (8,113)          8,677            3,722
Income taxes.....................       1,852                       1,852                          (363)(4)        1,489
                                      -------       -------      --------       -------         -------       ----------
Net income (loss)(5).............     $ 1,919       $  (613)     $  1,306       $(8,113)        $ 9,040       $    2,233
                                      =======       =======      ========       =======         =======       ==========
Net income per share(5)(6).......                                                                             $     0.19
                                                                                                              ==========
Shares outstanding(6)............                                                                             11,638,535
</TABLE>
 
- ---------------
 
(1) Reflects the effect of additional amortization of $59.2 million of
    tax-deductible goodwill recorded in connection with the Acquisition, which
    amounts to approximately $1.5 million annually, for the period from January
    1, 1996 through November 15, 1996.
 
(2) Reflects the increase in interest expense and amortization of deferred
    financing costs related to the Subordinated Notes, the Bank Facility and the
    mandatorily redeemable Preferred Stock issued in connection with the
    Acquisition assuming the Acquisition occurred on January 1, 1996. The
    Subordinated Notes consisted of the following at December 31, 1996 (i) 16%
    Series A Subordinated Note with a principal amount of $10.0 million and (ii)
    14% Series B Subordinated Notes with an aggregate principal amount of $2.5
    million. The Bank Facility consisted of the following at December 31, 1996:
    (i) a working capital loan with a principal
 
                                       18
<PAGE>   20
 
   
    amount of $1.3 million and a variable interest rate of 9.75%, (ii) a
    revolving term loan with a principal amount of $17.5 million and a variable
    interest rate of 9.75% and (iii) a term loan with a principal amount of $7.5
    million and a variable interest rate of 10.25%. At December 31, 1996, the
    mandatorily redeemable Preferred Stock consisted of 22,000 shares of Class A
    Preferred Stock, 10,000 shares of Class B Preferred Stock and 3,185 shares
    of Class C Preferred Stock, with face amounts of $22.0 million, $10.0
    million and $3.2 million, respectively, and dividend rates of 8.8%, 8.0% and
    8.0%, respectively. At December 31, 1996, deferred financing costs consisted
    of approximately $2.3 million relating to the Subordinated Notes and Bank
    Facility and $2.9 million relating to the issuance of mandatorily redeemable
    Preferred Stock. To compute the pro forma interest expense adjustment,
    composite interest rates of 15.85%, 10.1% and 8.5% were used for the
    Subordinated Notes, Bank Facility and mandatorily redeemable Preferred
    Stock, respectively.
    
 
(3) Reflects the reduction in interest expense by (i) $4.6 million as a result
    of the repayment of the Subordinated Notes and Bank Facility, (ii) $3.0
    million as a result of the elimination of dividends on the mandatorily
    redeemable Preferred Stock as a result of the Preferred Stock Conversion and
    (iii) $1.1 million as a result of the elimination of amortization of
    deferred financing costs and debt discounts.
 
(4) Reflects adjustment to increase pro forma income tax expense to result in a
    statutory income tax rate of 40%.
 
(5) Excludes the effect of an extraordinary charge of $7.8 million, net of the
    related tax benefit, relating to (i) the elimination of deferred financing
    costs of $5.3 million associated with the repayment of the Subordinated
    Notes and the Bank Facility and the conversion and/or redemption of all
    mandatorily redeemable Preferred Stock, (ii) the charge of $1.5 million
    related to the Preferred Stock Conversion, and (iii) the prepayment
    penalties of $1.0 million incurred in connection with the repayment of
    Subordinated Notes.
 
(6) Computed based on weighted average shares outstanding assuming the Preferred
    Stock Conversion and the Offering and the application of the net proceeds
    therefrom were consummated on January 1, 1996. Also includes the effect of
    Common Stock and equivalents issued within one year from the filing of the
    Registration Statement of which this Prospectus is a part at prices per
    share below the initial public offering price, using the treasury stock
    method using an assumed initial public offering price of $15.00 per share.
 
                                       19
<PAGE>   21
 
       UNAUDITED CONDENSED CONSOLIDATED PRO FORMA STATEMENT OF OPERATIONS
                     FOR THE SIX MONTHS ENDED JUNE 30, 1997
 
<TABLE>
<CAPTION>
                                                         SIX MONTHS
                                                            ENDED          OFFERING
                                                        JUNE 30, 1997     ADJUSTMENTS       PRO FORMA
                                                        -------------     -----------       ---------
                                                          (IN THOUSANDS, EXCEPT SHARE AND PER SHARE
                                                                            DATA)
<S>                                                     <C>               <C>               <C>
STATEMENT OF OPERATIONS DATA:
Net sales.............................................     $19,334          $                $19,334
Cost of sales.........................................       5,148                             5,148
                                                                                             -------
                                                                                                  --
                                                           -------          -------
Gross profit..........................................      14,186                            14,186
Selling, general and administrative expense...........      10,966                            10,966
Noncash compensation expense..........................         545                               545
Research and development expense......................       1,322                             1,322
Interest expense......................................       4,332           (4,332)(1)
                                                                                             -------
                                                                                                  --
                                                           -------          -------
Income (loss) before income taxes.....................      (2,979)           4,332            1,353
Income taxes..........................................          --              541(2)           541
                                                                                             -------
                                                                                                  --
                                                           -------          -------
Net income (loss)(3)..................................     $(2,979)         $ 3,791          $   812
                                                           =======          =======          =======
Net income per share(3)(4)............................                                       $  0.07
                                                                                             =======
Shares outstanding(4).................................                                    11,638,535
</TABLE>
 
- ---------------
 
(1) Reflects the reduction in interest expense as a result of the redemption of
    all outstanding shares of mandatorily redeemable Preferred Stock not
    converting into Common Stock in the Preferred Stock Conversion and the
    repayment of the Subordinated Notes and the Bank Facility. Also reflects a
    reduction in interest expense due to the elimination of dividends on the
    mandatorily redeemable Preferred Stock as a result of the Preferred Stock
    Conversion.
 
(2) Reflects adjustment to increase pro forma income tax expense to result in a
    statutory income tax rate of 40%.
 
(3) Excludes the effect of an extraordinary charge of $7.8 million, net of the
    related tax benefit, relating to (i) the elimination of deferred financing
    costs of $5.3 million associated with the repayment of the Subordinated
    Notes and the Bank Facility and the conversion and/or redemption of all
    mandatorily redeemable Preferred Stock, (ii) the charge of $1.5 million
    related to the Preferred Stock Conversion, and (iii) the prepayment
    penalties of $1.0 million incurred in connection with the repayment of
    Subordinated Notes.
 
(4) Computed based on weighted average shares outstanding assuming the Preferred
    Stock Conversion and the Offering and application of the net proceeds
    therefrom were consummated on January 1, 1996. Also includes the effect of
    Common Stock and equivalents issued within one year from the filing of the
    Registration Statement of which this Prospectus is a part at prices per
    share below the initial public offering price, using the treasury stock
    method using an assumed initial public offering price of $15.00 per share.
 
                                       20
<PAGE>   22
 
       UNAUDITED CONDENSED CONSOLIDATED PRO FORMA STATEMENT OF OPERATIONS
                     FOR THE SIX MONTHS ENDED JUNE 30, 1996
 
<TABLE>
<CAPTION>
                                               SIX MONTHS
                                                  ENDED       ACQUISITION        OFFERING
                                              JUNE 30, 1996   ADJUSTMENTS      ADJUSTMENTS       PRO FORMA
                                              -------------   ------------     ------------      ---------
                                                    (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
<S>                                           <C>             <C>              <C>               <C>
STATEMENT OF OPERATIONS DATA:
Net sales...................................     $15,744        $                $                $15,744
Cost of sales...............................       4,226                                            4,226
                                                 -------        --------         --------         -------
                                                                                                       --
Gross profit................................      11,518                                           11,518
Selling, general and administrative                8,224             285(1)                         8,509
  expense...................................
Research and development expense............       1,255                                            1,255
Interest expense............................                       4,318(2)        (4,318)(3)          --
                                                 -------        --------         --------         -------
                                                                                                       --
Income (loss) before income taxes...........       2,039          (4,603)           4,318           1,754
Income taxes................................       1,003                             (301)(4)         702
                                                 -------        --------         --------         -------
                                                                                                       --
Net income..................................     $ 1,036        $ (4,603)        $  4,619         $ 1,052
                                                 =======        ========         ========         =======
Net income per share(5).....................                                                      $  0.09
                                                                                                  =======
Shares outstanding(5).......................                                                   11,638,535
</TABLE>
 
- ---------------
 
(1) Reflects the effect of additional amortization of $59.2 million of
    tax-deductible goodwill recorded in connection with the Acquisition, which
    amounts to approximately $1.5 million annually, for the period from January
    1, 1996 through June 30, 1996.
 
(2) Reflects the increase in interest expense and amortization of deferred
    financing costs related to the Subordinated Notes, the Bank Facility and
    mandatorily redeemable Preferred Stock issued in connection with the
    Acquisition assuming the Acquisition had occurred on January 1, 1996.
 
(3) Reflects the reduction in interest expense as a result of the redemption of
    all outstanding shares of mandatorily redeemable Preferred Stock not
    converting into Common Stock in the Preferred Stock Conversion and the
    repayment of the Subordinated Notes and the Bank Facility. Also reflects a
    reduction in interest expense due to the elimination of dividends on the
    mandatorily redeemable Preferred Stock as a result of the Preferred Stock
    Conversion.
 
(4) Reflects adjustment to increase pro forma income tax expense to result in a
    statutory income tax rate of 40%.
 
(5) Computed based on weighted average shares outstanding assuming the Preferred
    Stock Conversion and the Offering and the application of proceeds therefrom
    were consummated on January 1, 1996. Also includes the effect of Common
    Stock and equivalents issued within one year from the filing of the
    Registration Statement of which this Prospectus is a part at prices per
    share below the initial public offering price, using the treasury stock
    method using an assumed initial public offering price of $15.00 per share.
 
                                       21
<PAGE>   23
 
            UNAUDITED CONDENSED CONSOLIDATED PRO FORMA BALANCE SHEET
                                 JUNE 30, 1997
 
                                     ASSETS
 
   
<TABLE>
<CAPTION>
                                                    AT
                                                   JUNE      PREFERRED STOCK
                                                    30,        CONVERSION           OFFERING
                                                   1997        ADJUSTMENTS         ADJUSTMENTS        PRO FORMA
                                                  -------    ---------------       -----------        ---------
                                                                         (IN THOUSANDS)
<S>                                               <C>        <C>                   <C>                <C>
Current assets
  Cash and cash equivalents.....................  $    61       $                   $   2,347(1)      $  2,408
  Accounts receivable, net......................    7,083                                                7,083
  Inventories...................................    6,062                                                6,062
  Prepaid expenses and other current assets.....      305                                                  305
                                                  -------       ---------           ---------         --------
    Total current assets........................   13,511                               2,347           15,858
Fixed assets, net...............................    5,128                                                5,128
Goodwill, net...................................   59,352                                               59,352
Other assets....................................    5,415                              (3,108)(2)        2,307
                                                  -------       ---------           ---------         --------
    Total assets................................  $83,406       $                   $    (761)        $ 82,645
                                                  =======       =========           =========         ========

                                LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)
Current liabilities
  Current portion of long-term debt.............  $ 3,269       $                   $  (3,269)(3)     $
  Accounts payable..............................    2,091                                                2,091
  Accrued liabilities...........................    3,114                                (503)(3)        2,611
  Customer advances.............................      488                                                  488
                                                  -------       ---------           ---------         --------
    Total current liabilities...................    8,962                              (3,772)           5,190
Long-term debt..................................   39,776                             (39,776)(3)
Mandatorily redeemable Preferred Stock..........   35,814         (20,000)(4)         (15,814)(5)
                                                  -------       ---------           ---------         --------
    Total liabilities...........................   84,552         (20,000)            (59,362)           5,190
                                                  -------       ---------           ---------         --------
Stockholders' equity (deficit)
  Common Stock and additional paid-in capital...    2,446          21,505(4)           66,183(6)        90,134
  Accumulated deficit...........................   (3,592)         (1,505)(4)(7)       (7,582)(7)(8)   (12,679) 
                                                  -------       ---------           ---------         --------
    Total stockholders' equity (deficit)........   (1,146)         20,000              58,601           77,455
                                                  -------       ---------           ---------         --------
    Total liabilities and stockholders'
      equity....................................  $83,406       $                   $    (761)        $ 82,645
                                                  =======       =========           =========         ========
</TABLE>
    
 
- ---------------
(1) Reflects the increase in cash and cash equivalents equal to the net proceeds
    from the Offering less the redemption of mandatorily redeemable Preferred
    Stock and repayment of the Subordinated Notes and the Bank Facility upon
    consummation of the Offering.
 
(2) Reflects write-off of debt issue costs and Preferred Stock issue costs of
    $4.7 million, less deferred income tax asset of $1.6 million recorded for
    the extraordinary charge discussed in footnote 7.
 
(3) Reflects the repayment of the Subordinated Notes and the Bank Facility upon
    consummation of the Offering.
 
(4) Reflects the conversion of 17,471 shares of Class A Preferred Stock and
    2,527 shares of Class C Preferred Stock into an aggregate 1,433,547 shares
    of Common Stock at 93% of the initial public offering price upon
    consummation of the Offering and the related extraordinary charge of $1.5
    million.
 
(5) Reflects the redemption upon consummation of the Offering of all shares of
    mandatorily redeemable Preferred Stock not converting into Common Stock in
    the Preferred Stock Conversion.
 
(6) This adjustment is recorded as additional paid-in capital and reflects the
    application of the net proceeds of $64.9 million from the Offering.
 
   
(7) Reflects an extraordinary charge of $7.8 million, net of the related tax
    benefit, relating to (i) the elimination of deferred finance costs of $5.3
    million associated with the repayment of the Subordinated Notes and the Bank
    Facility and the conversion and/or redemption of all mandatorily redeemable
    Preferred Stock, (ii) the charge of $1.5 million related to the Preferred
    Stock Conversion, and (iii) the prepayment penalties of $1.0 million
    incurred in connection with the repayment of the Subordinated Notes.
    
 
   
(8) Includes the effect of a compensation charge of $1.3 million related to
    options granted below the fair value per share at the date of grant, which
    options are either fully vested or vest immediately upon consummation of the
    Offering.
    
 
                                       22
<PAGE>   24
 
                SELECTED HISTORICAL CONSOLIDATED FINANCIAL DATA
 
     The following selected consolidated statement of operations data for the
years ended December 31, 1994 and 1995, the period January 1, 1996 through
November 15, 1996, the period November 16, 1996 through December 31, 1996, the
six month period ended June 30, 1997 and the selected consolidated balance sheet
data as of December 31, 1995 and 1996 and June 30, 1997 are derived from the
audited Consolidated Financial Statements included elsewhere in this Prospectus.
The selected consolidated statement of operations data for the six months ended
June 30, 1996 and the selected consolidated balance sheet data as of June 30,
1996 are derived from unaudited Consolidated Financial Statements included
elsewhere in this Prospectus. The selected consolidated statement of operations
data for the years ended December 31, 1992 and 1993 and the selected
consolidated balance sheet data as of December 31, 1992 and 1993, are derived
from the unaudited Consolidated Financial Statements not included in this
Prospectus, which Consolidated Financial Statements were prepared by management
of the Company on the same basis as the audited Consolidated Financial
Statements included elsewhere herein and, in the opinion of the Company, include
all adjustments (consisting of only normal recurring adjustments) necessary to
present fairly the information set forth below. The following selected
consolidated financial data should be read in conjunction with "Management's
Discussion and Analysis of Financial Condition and Results of Operations" and
the Consolidated Financial Statements and Notes thereto included elsewhere in
this Prospectus. The Company uses a 52/53 week fiscal year ending on the last
Saturday in December. As a result, fiscal periods may not end on the same day as
the end of the respective calendar periods.
 
   
<TABLE>
<CAPTION>
                                                                                           COMPANY
                                                     PREDECESSOR(1)                      ------------   PREDECESSOR     COMPANY
                                  ----------------------------------------------------   NOVEMBER 16,   -----------   -----------
                                                                           JANUARY 1,        1996       SIX MONTHS    SIX MONTHS
                                         YEAR ENDED DECEMBER 31,            THROUGH        THROUGH         ENDED         ENDED
                                  -------------------------------------   NOVEMBER 15,   DECEMBER 31,    JUNE 30,      JUNE 30,
                                   1992      1993      1994      1995         1996        1996(2)(3)       1996       1997(3)(4)
                                  -------   -------   -------   -------   ------------   ------------   -----------   -----------
                                                          (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
<S>                               <C>       <C>       <C>       <C>       <C>            <C>            <C>           <C>
STATEMENT OF OPERATIONS DATA:
  Net sales.....................  $12,735   $16,845   $22,168   $27,361     $ 28,108       $  4,089       $15,744       $19,334
  Cost of sales.................    4,042     5,127     6,666     7,865        7,430          1,356         4,226         5,148
                                  -------   -------   -------   -------      -------        -------       -------       -------
  Gross profit..................    8,693    11,718    15,502    19,496       20,678          2,733        11,518        14,186
  Selling, general and
    administrative expense......    6,164     8,698    11,393    14,241       14,791          1,929         8,224        11,511
  Research and development
    expense.....................    1,218     1,618     1,781     2,225        2,116            352         1,255         1,322
                                  -------   -------   -------   -------      -------        -------       -------       -------
  Income from operations........    1,311     1,402     2,328     3,030        3,771            452         2,039         1,353
  Interest expense..............       45        50        --        --           --          1,065            --         4,332
                                  -------   -------   -------   -------      -------        -------       -------       -------
  Income (loss) before income
    taxes.......................    1,266     1,352     2,328     3,030        3,771           (613)        2,039        (2,979)
  Income taxes..................      506       836     1,253     1,572        1,852             --         1,003            --
                                  -------   -------   -------   -------      -------        -------       -------       -------
  Net income (loss).............  $   760   $   516   $ 1,075   $ 1,458     $  1,919       $   (613)      $ 1,036       $(2,979)
                                  =======   =======   =======   =======      =======        =======       =======       =======
  Net (loss) per share(5).......                                                           $  (0.05)                    $ (0.28)
                                                                                            =======                     =======
  Shares outstanding(5).........                                                         11,638,535                  11,638,535

BALANCE SHEET DATA (AT END OF
  PERIOD):
  Cash and cash equivalents.....  $    --   $    --   $   155   $   120                    $    220                     $    61
  Working capital...............      502     1,629     4,585     4,706                       2,357                       4,549
  Total assets..................    4,266    31,796    33,764    35,648                      79,627                      83,406
  Total long-term debt and
    mandatorily redeemable
    Preferred Stock(6)..........       --        --        --        --                      73,642                      78,859
  Total stockholders' equity
    (deficit)/Predecessor
    equity......................    1,058    27,220    30,698    32,588                       1,288                      (1,146)
 
CASH FLOW AND OTHER DATA:
  EBITDA(7).....................  $ 1,492   $ 2,301   $ 3,559   $ 4,566     $  5,395       $    795       $ 2,896       $ 2,797
  Depreciation..................      181       161       363       595          712            132           352           575
  Amortization..................       --       738       868       941          912            211           505           869
  Capital expenditures..........      132       560     1,702     1,190        1,957            250         1,286         1,018
 
  Cash flows provided by (used
    in):
    Operating activities........    2,454       700     1,680     3,313        5,434             82         2,644          (777)
    Investing activities........     (132)     (560)   (1,702)   (1,190)      (1,957)       (58,994)       (1,286)       (2,755)
    Financing activities........   (2,322)     (140)      177    (2,158)      (3,597)        59,132          (805)        3,373
</TABLE>
    
 
- ---------------
 
   
(Footnotes on next page)
    
 
                                       23
<PAGE>   25
 
(1) Represents the historical financial data of the Company's predecessor, S-O,
    a wholly-owned subsidiary of Bausch & Lomb. For 1992, represents the
    historical financial data of S-O's predecessor.
 
(2) Includes the results of operations and the assets of S-O subsequent to the
    Acquisition in November 1996.
 
(3) Includes the effect of amortization of $59.2 million of goodwill recorded in
    connection with the Acquisition, which is being amortized over a 40 year
    period and is tax deductible.
 
(4) Includes the results of operations of the dental business of Interpore
    subsequent to its acquisition in May 1997.
 
(5) Share and per share data are not considered meaningful since S-O operated as
    a wholly-owned subsidiary of Bausch & Lomb from 1993 through November 15,
    1996.
 
   
(6) Includes current portion of long-term debt.
    
 
   
(7) EBITDA represents earnings before interest, income taxes, depreciation and
    amortization. Management believes EBITDA provides supplemental information
    to enable investors to comparatively analyze the Company's performance
    without the effect of (i) interest expense which will be significantly
    reduced upon repayment of indebtedness following the Offering, and (ii) the
    change in goodwill amortization as a result of the Acquisition. EBITDA may
    not provide an accurate comparison between companies because it is not
    necessarily computed by all companies in an identical manner and certain
    items excluded from EBITDA are significant components necessary to
    understand and assess the Company's financial performance. The use of such
    information is intended only to supplement the conventional income statement
    presentation and is not to be considered as an alternative to net income, to
    represent cash flows for the periods or funds available for management's
    discretionary use or any other indicator of the Company's operating
    performance which is presented in accordance with GAAP above. The
    computation of EBITDA for each of the respective periods shown is as follows
    (in thousands):
    
 
   
<TABLE>
<CAPTION>
                                                      PREDECESSOR                        COMPANY      PREDECESSOR      COMPANY
                                    ------------------------------------------------   ------------   ------------   ------------
                                                                         JANUARY 1     NOVEMBER 16     SIX MONTHS     SIX MONTHS
                                         YEAR ENDED DECEMBER 31,          THROUGH        THROUGH         ENDED          ENDED
                                    ---------------------------------   NOVEMBER 15,   DECEMBER 31,     JUNE 30,       JUNE 30,
                                     1992     1993     1994     1995        1996           1996           1996           1997
                                    ------   ------   ------   ------   ------------   ------------   ------------   ------------
      <S>                           <C>      <C>      <C>      <C>      <C>            <C>            <C>            <C>
      Income (loss) before income
        taxes.....................  $1,266   $1,352   $2,328   $3,030      $3,771         $ (613)        $2,039        $ (2,979)
      Plus: Interest expense......      45       50       --       --          --          1,065             --           4,332
          Depreciation............     181      161      363      595         712            132            352             575
          Amortization............      --      738      868      941         912            211            505             869
                                    ------   ------   ------   ------      ------         ------         ------          ------
      EBITDA......................  $1,492   $2,301   $3,559   $4,566      $5,395         $  795         $2,896        $  2,797
                                    ======   ======   ======   ======      ======         ======         ======          ======
</TABLE>
    
 
                                       24
<PAGE>   26
 
                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
     The following discussion should be read in conjunction with, and is
qualified in its entirety by, the Consolidated Financial Statements and Notes
thereto included elsewhere in this Prospectus. Historical and pro forma results
of operations, percentage relationships and any trends that may be inferred from
the discussion below are not necessarily indicative of the operating results for
any future period.
 
GENERAL
 
     Steri-Oss develops, manufactures and markets a broad line of dental
implants, abutments and related surgical instruments for distribution in North
America, Europe/the Middle East, Asia and Central and South America. The
Company's products are used by oral surgeons, periodontists and implantologists
who typically perform the implant surgery, as well as general practitioners and
prosthodontists who usually prepare the crown or other prosthetic device that
fits on the abutment. In North America, the Company sells its products through
its direct sales force consisting of over 40 persons. Internationally, the
Company sells its products through 26 independent distributors in more than 35
countries.
 
     The Company's predecessor sold its first dental implant in 1986 and was
acquired by the Company from Bausch & Lomb in November 1996. In May 1997, the
Company acquired the dental operations of Interpore. The Company accounted for
each of its acquisitions as a purchase for financial reporting purposes and, as
a result, the Company's consolidated statement of operations data includes the
operating results of the acquired companies and assets from their respective
dates of acquisition. In connection with the Acquisition, the Company recorded
$59.2 million in goodwill, which is being amortized by the Company over a
40-year period, resulting in tax-deductible amortization of approximately $1.5
million per year.
 
     The Company's products are purchased by dental professionals who bill
patients directly for the implant procedure. In the United States and most other
countries, implants generally are not covered by health insurance and, as a
result, the patient is responsible for payment to the dental professional. While
certain competitive implants are less expensive than the Company's implants, the
Company believes its prices are competitive with other high-quality implant
products. Due in part to the importance of quality and customer service and to
the minor cost of the implant relative to the cost of the implant procedure, the
Company does not believe that price is a major competitive factor. The Company
does, however, provide its customers, particularly its international
distributors, with discounts. The Company uses such discounts to encourage
international distributors to increase their marketing activities and training
programs. The Company has experienced some decline in the average selling price
of its products over the last several years, the effect of which has been
partially offset by a reduction in the Company's cost of goods sold as a
percentage of net sales. While the Company does not anticipate any material
declines in its average selling prices, any such declines could adversely affect
the Company's net sales, results of operations and cash flows.
 
     Approximately 53.2% of the Company's net sales for the six months ended
June 30, 1997 were attributable to dental implants, while abutments and surgical
instrument sales accounted for approximately 30.4% and 16.4% of net sales,
respectively, for the same period. In general, the Company's dental implants
have the highest gross margins of its products, followed by abutments, which
have slightly lower gross margins. The gross margins on surgical instruments are
significantly lower than on dental implants and abutments because the Company
often discounts its surgical instruments to encourage dental professionals using
competitors' products to switch to the Company's implant systems. The Company
generally experiences higher gross margins on new products and the Company seeks
to generate a significant portion of its net sales in any particular year from
recently introduced products.
 
     International sales (sales outside the United States and Canada)
constituted approximately 41.2% and 41.1% of the Company's net sales during 1996
and for the six months ended June 30, 1997, respectively. The Company
anticipates that international sales will continue to constitute a significant
portion of the Company's net sales in the future. Substantially all of the
Company's international net sales are to independent distributors. In
particular, Metalor and its affiliates accounted for approximately 12.1% of the
Company's net sales during 1996 and 13.9% for the six months ended June 30,
1997. Although the Company's international
 
                                       25
<PAGE>   27
 
sales are currently denominated in United States dollars, fluctuations in
currency exchange rates have in the past, and could in the future, impact the
Company's net sales or profitability in certain countries.
 
     Prior to 1993, the Company outsourced most of its manufacturing to
independent vendors. In 1993, the Company leased a new manufacturing facility
and purchased equipment for the purpose of bringing its manufacturing in-house.
In addition, the Company undertook other measures designed to reduce
manufacturing costs and increase operating efficiencies. Primarily as a result
of these actions, the Company reduced cost of sales as a percentage of net sales
from 30.1% in 1994 to 26.6% for the six months ended June 30, 1997. Currently,
the Company manufactures substantially all of its implants.
 
     While the Company's annual net sales have increased 152.8% from 1992 to
1996, the Company's net sales and results of operations have experienced
quarterly fluctuations. The Company's sales in the third quarter of each year
have been historically lower than in the prior quarter. The Company believes the
lower third quarter sales are due in part to fewer implant procedures performed
during the summer vacation months. The Company has also experienced some
increases in net sales during the fourth quarter followed by lower to flat first
quarter sales primarily due to the Company's increased marketing activities in
the latter portion of the year.
 
     The Company's results of operations are affected by a variety of factors.
If the Company were to experience pricing pressure, an adverse shift in product
mix, increased cost of sales, increased discounts to distributors, increased
manufacturing costs or adverse changes in governmental regulations, such factors
could adversely affect the Company's financial condition and results of
operations.
 
RESULTS OF OPERATIONS
 
     Effective November 16, 1996, the Company acquired substantially all of its
assets of its predecessor, S-O. The historical data of S-O and the Company are
not comparable in certain respects. Accounting for the acquisition of S-O and
the Company have resulted in material differences due to a change in the basis
of accounting between S-O and the Company. The Company's results of operations
since November 16, 1996 have been affected by an increase in interest expense,
amortization of goodwill and debt issuance costs, and depreciation of fixed
assets having a new cost basis. The income tax expense shown in the statement of
operations data for the periods prior to the Acquisition is the estimated amount
that the Company's predecessor would have incurred on a stand-alone basis. The
results of operations of the Company's predecessor for the period January 1,
1996 through November 15, 1996 have been combined with the results of operations
of the Company for the period November 16, 1996 through December 31, 1996 to
present the results of operations for the year ended December 31, 1996. See
"Unaudited Pro Forma Consolidated Financial Data."
 
                                       26
<PAGE>   28
 
     The following table sets forth for the periods indicated certain
consolidated statements of operations data, as a percentage of the Company's net
sales:
 
   
<TABLE>
<CAPTION>
                                               PREDECESSOR
                                     -------------------------------      COMPANY                       PREDECESSOR     COMPANY
                                                                        ------------      COMBINED      -----------    ----------
                                       YEARS ENDED       JANUARY 1,     NOVEMBER 16,    ------------    SIX MONTHS     SIX MONTHS
                                      DECEMBER 31,        THROUGH         THROUGH        YEAR ENDED        ENDED         ENDED
                                     ---------------    NOVEMBER 15,    DECEMBER 31,    DECEMBER 31,     JUNE 30,       JUNE 30,
                                     1994      1995         1996            1996            1996           1996           1997
                                     -----     -----    ------------    ------------    ------------    -----------    ----------
<S>                                  <C>       <C>      <C>             <C>             <C>             <C>            <C>
STATEMENT OF OPERATIONS DATA:
Net sales..........................  100.0%    100.0%       100.0%          100.0%          100.0%         100.0%         100.0%
Cost of sales......................   30.1      28.7         26.4            33.2            27.3           26.8           26.6
                                     -----     -----        -----           -----           -----          -----          -----
Gross profit.......................   69.9      71.3         73.6            66.8            72.7           73.2           73.4
Selling, general and administrative
  expense..........................   51.4      52.1          7.5             8.6            51.9           52.2           59.6
Research and development expense...    8.0       8.1         52.6            47.2             7.7            8.0            6.8
                                     -----     -----        -----           -----           -----          -----          -----
Income from operations.............   10.5      11.1         13.4            11.1            13.1           13.0            7.0
Interest expense...................     --        --           --            26.0             3.3             --           22.4
Income (loss) before income
  taxes............................   10.5      11.1         13.4           (15.0)            9.8           13.0          (15.4)
Income taxes.......................    5.7       5.8          6.6              --             5.8            6.4             --
                                     -----     -----        -----           -----           -----          -----          -----
Net income (loss)..................    4.8%      5.3%         6.8%          (15.0)%           4.0%           6.6%         (15.4)%
                                     =====     =====        =====           =====           =====          =====          =====
OTHER DATA:
EBITDA(1)..........................   16.1%     16.7%        19.2%           19.4%           19.2%          18.4%          14.5%
Amortization.......................    3.8       3.1          2.8             5.2             3.1            3.2            4.5
Depreciation.......................    1.6       2.2          2.5             3.2             2.6            2.2            3.0
</TABLE>
    
 
- ---------------
 
   
(1) EBITDA represents earnings before interest, income taxes, depreciation and
    amortization. Management believes EBITDA provides supplemental information
    to enable investors to comparatively analyze the Company's performance
    without the effect of (i) interest expense which will be significantly
    reduced upon repayment of indebtedness following the Offering, and (ii) the
    change in goodwill amortization as a result of the Acquisition. EBITDA may
    not provide an accurate comparison between companies because it is not
    necessarily computed by all companies in an identical manner and certain
    items excluded from EBITDA are significant components necessary to
    understand and assess the Company's financial performance. The use of such
    information is intended only to supplement the conventional income statement
    presentation and is not to be considered as an alternative to net income, to
    represent cash flows for the periods or funds available for management's
    discretionary use or any other indicator of the Company's operating
    performance which is presented in accordance with GAAP above.
    
 
     SIX MONTHS ENDED JUNE 30, 1996 COMPARED TO SIX MONTHS ENDED JUNE 30, 1997
 
     Net Sales. Net sales increased 22.8% from $15.7 million for the six months
ended June 30, 1996 to $19.3 million for the six months ended June 30, 1997,
primarily reflecting increased unit sales of dental implants and abutments.
North American net sales increased by 25.2% for the six month period ended June
30, 1997 as compared to the comparable period in 1996 primarily due to sales of
the Company's Replace Implant System introduced in March 1997 and, to a lesser
extent, net sales attributable to the dental operations acquired from Interpore.
International net sales increased by 19.5% during the six months ended June 30,
1997 as compared to the six months ended June 30, 1996, primarily due to
increased sales in Germany, Korea, Japan and Taiwan.
 
     Gross Profit. Gross profit increased 23.2% from $11.5 million, or 73.2% of
net sales, for the six months ended June 30, 1996 to $14.2 million, or 73.4% of
net sales, for the six months ended June 30, 1997. The increase in gross profit
was primarily due to the increase in sales across all product lines. The
Company's expansion of its manufacturing capacity to include surgical drills and
related products resulted in lower product costs. This margin improvement was
partially offset by increased sales of Interpore products, which generally have
lower margins than certain of the Company's other products.
 
     Selling, General and Administrative Expense. Selling, general and
administrative expense increased 40.0% from $8.2 million, or 52.2% of net sales,
for the six months ended June 30, 1996 to $11.5 million, or
 
                                       27
<PAGE>   29
 
59.6% of net sales, for the six months ended June 30, 1997. This increase was
primarily due to the amortization of tax-deductible goodwill recorded in
connection with the Acquisition, the addition of new sales and marketing
personnel, an increase in marketing, educational, accounting and financial
expenses necessary to accommodate the Company's growth and a noncash
compensation charge related to stock options.
 
     Research and Development Expense. Although research and development expense
remained constant at $1.3 million for each of the six month periods ended June
30, 1996 and 1997, research and development expense decreased as a percentage of
net sales from 8.0% for the six months ended June 30, 1996 to 6.8% for the
comparable six month period in 1997. Research and development expense during the
six month period ended June 30, 1997 primarily consisted of compensation for
engineering and regulatory personnel, project material costs, and clinical
studies and FDA testing related to development activities. The Company expenses
research and development costs when incurred.
 
     Interest Expense. Interest expense for the six months ended June 30, 1997
was $4.3 million, of which (i) $2.3 million consisted of interest on
indebtedness under the Company's Bank Facility and Subordinated Notes, (ii) $1.5
million consisted of accrued dividends on mandatorily redeemable Preferred Stock
and (iii) $506,000 consisted of the amortization of deferred financing costs
incurred in connection with the Acquisition. The Company had no interest expense
during the six months ended June 30, 1996.
 
   
     Income Taxes. Income taxes were $1.0 million for the six months ended June
30, 1996 reflecting the estimated amount the Company's predecessor would have
incurred on a stand-alone basis. Prior to November 16, 1996, the Company's
results of operations were included in the consolidated returns of Bausch &
Lomb. The Company did not incur any income tax expense during the six months
ended June 30, 1997 as a result of the Company's losses in that period. At June
30, 1997, the Company had net operating loss carryforwards of $2.0 million and
$1.0 million for federal and California income tax purposes, respectively,
reflecting the amortization of tax-deductible goodwill recorded in connection
with the Acquisition.
    
 
     Net Income (Loss). Net loss was $3.0 million, or 15.4% of net sales, for
the six months ended June 30, 1997 compared to net income of $1.0 million, or
6.6% of net sales, for the six months ended June 30, 1996, primarily as a result
of increased interest expense and the amortization of tax-deductible goodwill
recorded in connection with the Acquisition in November 1996.
 
     EBITDA. EBITDA decreased 3.4% from $2.9 million for the six months ended
June 30, 1996 to $2.8 million for the six months ended June 30, 1997 primarily
due to a noncash compensation charge. EBITDA represented 18.4% of the Company's
net sales for the six months ended June 30, 1996 as compared to 14.5% of net
sales for the comparable period in 1997.
 
YEAR ENDED DECEMBER 31, 1995 COMPARED TO YEAR ENDED DECEMBER 31, 1996
 
     Net Sales. Net sales increased 17.7% from $27.4 million for the year ended
December 31, 1995 to $32.2 million for the year ended December 31, 1996. North
American net sales increased by 13.8% for the year ended December 31, 1996 as
compared to the prior year due, in part, to the addition of new sales and
marketing personnel to support new sales regions. International net sales
increased by 23.7% in 1996 over 1995, reflecting growth in each of the Company's
major sales regions. Sales of implant products increased by approximately $2.6
million in 1996 as compared to the prior year largely due to the introduction of
implants coated with titanium plasma spray ("TPS") and increased sales and
marketing support. In addition, the Company's continued marketing efforts
towards improving sales of abutments resulted in an increase of approximately
$2.2 million in net sales for such products.
 
     Gross Profit. Gross profit increased 20.1% from $19.5 million, or 71.3% of
net sales, for the year ended December 31, 1995 to $23.4 million, or 72.7% of
net sales, for the year ended December 31, 1996. The increase in gross margin
was due to a shift in the Company's product mix toward higher margin implants
and abutments. This improvement in gross margin was also due to the Company's
1996 expansion of its manufacturing capacity to increase its production of
implants and abutments, resulting in lower product costs.
 
     Selling, General and Administrative Expense. Selling, general and
administrative expense increased 17.4% from $14.2 million, or 52.1% of net
sales, for the year ended December 31, 1995 to $16.7 million, or
 
                                       28
<PAGE>   30
 
51.9% of net sales, for the year ended December 31, 1996. This increase was
primarily the result of the addition of new personnel in the Company's sales,
marketing and education and accounting departments, increased charges from
Bausch & Lomb as reimbursement for certain increased employee benefits, and
increased media and advertising expenses.
 
     Research and Development Expense. Research and development expense
increased 10.9% from $2.2 million, or 8.1% of net sales, for the year ended
December 31, 1995 to $2.5 million, or 7.7% of net sales, for the year ended
December 31, 1996, reflecting increased compensation for three additional
engineering personnel as well as increased expenses associated with continued
clinical studies and FDA testing.
 
     Interest Expense. Interest expense for the year ended December 31, 1996 was
$1.1 million, reflecting interest on the Company's Bank Facility and
Subordinated Notes and accrued dividends on mandatorily redeemable Preferred
Stock, incurred and issued as part of the Acquisition. The Company had no
interest expense prior to November 16, 1996.
 
     Income Taxes. Income taxes were $1.6 million and $1.9 million for the years
ended December 31, 1995 and 1996, respectively, reflecting the amounts the
Company's predecessor would have incurred on a stand-alone basis.
 
     Net Income. Net income decreased 10.4% from $1.5 million, or 5.3% of net
sales, for the year ended December 31, 1995 to $1.3 million, or 4.0% of net
sales, for the year ended December 31, 1996, primarily as a result of increased
interest expense and amortization of tax-deductible goodwill recorded in
connection with the Acquisition in November 1996.
 
     EBITDA. EBITDA increased 35.6% from $4.6 million for the year ended
December 31, 1995 as compared to $6.2 million for the year ended December 31,
1996. This increase reflected increased gross profit commensurate with increased
sales and operating efficiencies.
 
YEAR ENDED DECEMBER 31, 1994 COMPARED TO YEAR ENDED DECEMBER 31, 1995
 
     Net Sales. Net sales increased 23.4% from $22.2 million for the year ended
December 31, 1994 to $27.4 million for the year ended December 31, 1995. North
American net sales increased by 18.3% for the year ended December 31, 1995 as
compared to the prior year. International net sales improved by 32.4% in 1995 as
compared to 1994. Growth in net sales occurred in each of the Company's major
sales regions, in particular in the Middle East, reflecting the Company's
expansion into Israel in March 1995. Sales of implant products increased by
approximately $2.4 million in 1995 as compared to the prior year primarily due
to the expansion of the Company's product line. In addition, the Company's
strategic focus on improving sales of abutments generated approximately $2.3
million in net sales for such products.
 
     Gross Profit. Gross profit increased 25.8% from $15.5 million, or 69.9% of
net sales, for the year ended December 31, 1994 to $19.5 million, or 71.3% of
net sales, for the year ended December 31, 1995. The increase in gross profit
was primarily due to increased sales of implants and abutments. The improvement
in gross margin was primarily due to the development and expansion of the
Company's implant manufacturing capacities and to a lesser extent due to
increased efficiencies resulting from the implementation of new materials
forecasting and master production scheduling software applications.
 
   
     Selling, General and Administrative Expense. Selling, general and
administrative expense increased 25.0% from $11.4 million, or 51.4% of net
sales, for the year ended December 31, 1994 to $14.2 million, or 52.1% of net
sales, for the year ended December 31, 1995. This increase was primarily the
result of hiring additional personnel in the sales, marketing and education,
customer support and information systems departments. The Company also incurred
increased expenses for additional international travel, consulting expenses for
marketing projects and advertising related to the Company's ten year warranty
program, the introduction of the DIA Anatomic Abutment System and the Company's
sponsorship of an international conference in May 1995.
    
 
     Research and Development Expense. Research and development expense
increased 24.9% from $1.8 million, or 8.0% of net sales, for the year ended
December 31, 1994 to $2.2 million, or 8.1% of net sales,
 
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<PAGE>   31
 
for the year ended December 31, 1995. This increase was primarily due to
increases in clinical studies and FDA testing relating to new products.
 
     Income Taxes. Income taxes were $1.3 million and $1.6 million for the years
ended December 31, 1994 and 1995, respectively, reflecting the amount the
Company's predecessor would have incurred on a stand-alone basis.
 
     Net Income. Net income increased 35.6% from $1.1 million, or 4.8% of net
sales, for the year ended December 31, 1994 to $1.5 million, or 5.3% of net
sales, for the year ended December 31, 1995.
 
     EBITDA. EBITDA increased 28.3% from $3.6 million for the year ended
December 31, 1994 to $4.6 million for the year ended December 31, 1995. This
increase is commensurate with the increase in sales and operating efficiencies
achieved during 1995.
 
LIQUIDITY AND CAPITAL RESOURCES
 
     The Company's predecessor was a wholly-owned subsidiary of Bausch & Lomb
from 1993 until the Acquisition in November 1996, and during that time financed
working capital from cash generated from operations. In order to finance the
Acquisition, the Company issued Class A Preferred Stock, Class B Preferred
Stock, Class C Preferred Stock and Subordinated Notes, and made an initial draw
down under the Bank Facility. Following the Acquisition, the Company financed
working capital and the acquisition of the dental business of Interpore with
cash generated from operations and borrowings under the Bank Facility.
 
     At June 30, 1997, the Company had outstanding long-term debt of $10.2
million under its 16% Series A Senior Subordinated Note, $2.5 million under its
14% Series B Senior Subordinated Notes, and combined short and long-term
borrowings of $30.4 million under the Bank Facility. The availability of
borrowings under the Bank Facility will be automatically reduced as frequently
as each quarter in increasing amounts until the final maturity in November 2002
when all loans under the Bank Facility must be repaid and no more borrowing can
be made. The Bank Facility is secured by substantially all of the Company's
assets. The Bank Facility requires the Company to maintain certain financial
ratios and limits the Company's ability to incur additional debt, repurchase its
stock and pay dividends. The Company was in compliance with all such financial
ratios and covenants as of June 30, 1997.
 
     The Company also had outstanding $35.2 million of mandatorily redeemable
Preferred Stock, together with accrued dividends of $1.9 million at June 30,
1997. The Company intends to apply a portion of the net proceeds of the Offering
to repay in full the Subordinated Notes and its outstanding indebtedness under
the Bank Facility. In addition, the Company intends to apply a portion of net
proceeds of the Offering to redeem in full all of its outstanding shares of
Class B Preferred Stock and all of its outstanding shares of Class A Preferred
Stock and Class C Preferred Stock not converting into Common Stock in the
Preferred Stock Conversion. Upon consummation of the Offering, the Company will
record an extraordinary charge of $7.8 million, net of the related tax benefit,
resulting from the redemption and conversion of Preferred Stock and the
repayment of the Subordinated Notes and Bank Facility. See "Use of Proceeds."
Following the Offering, the Company will have no outstanding indebtedness.
 
     Subject to the completion of the Offering and certain other conditions,
Union Bank and First Source Financial LLP (collectively, the "Senior Lenders")
have agreed to release the Company from all of its obligations under the Bank
Facility. The Company has also received a commitment letter from Union Bank for
the establishment of a $20.0 million revolving line of credit for working
capital requirements and general corporate purposes and a $15.0 million
acquisition facility to fund future acquisitions. The interest rate on the
revolving line of credit and the acquisition facility will be tied to either
Union Bank's Reference Rate or the LIBOR rate, at the Company's option. Certain
conditions precedent to (i) the Senior Lender's release of the Company from its
obligations under the Bank Facility and (ii) Union Bank's commitment to provide
the revolving line of credit and acquisition facility to the Company include (A)
the completion of an initial public offering of the Company generating gross
proceeds of at least $60.0 million, and the application of the proceeds
therefrom to redeem all shares of outstanding Class A Preferred Stock, Class B
Preferred Stock and Class C Preferred Stock not converting in the Preferred
Stock Conversion and to repay all outstanding
 
                                       30
<PAGE>   32
 
indebtedness under the Subordinated Notes and all prepayment penalties in
connection with the early retirement thereof, (B) the completion of loan
documentation satisfactory to Union Bank, and (C) the perfection of a security
interest by Union Bank in substantially all of the Company's assets. No
assurance can be given that the Union Bank commitment letter will result in a
binding line of credit and acquisition facility. The Company's failure to obtain
a binding line of credit and acquisition facility could have a material adverse
effect on the Company's business and ability to implement its business strategy.
 
     The Company's capital expenditures consist primarily of purchases of fixed
assets relating to its manufacturing operations. Capital expenditures decreased
to $1.0 million for the six months ended June 30, 1997 from $1.3 million for the
comparable period in 1996. Capital expenditures for the years ended December 31,
1994, 1995 and 1996 were $1.7 million, $1.2 million and $2.2 million,
respectively. Capital expenditures increased in 1996 as a result of acquiring
CNC machines and upgrading the Company's information systems.
 
     The Company anticipates making capital expenditures of approximately $1.8
million during the next twelve months to expand its manufacturing operations and
bring the TPS-coating capabilities in-house. The Company has also entered into
several agreements with universities to provide financing for research and
development and promotional studies related to the Company's products. The
Company is required to make future minimum payments under such agreements in the
aggregate of approximately $1.2 million through the year ending December 31,
1999. In addition, in January 1998, the Company must make a deferred cash
payment of up to $538,000 to Interpore to fund the balance of the purchase price
for the Company's acquisition of the dental operations of Interpore in May 1997.
 
     The Company believes that anticipated cash flows from operations and
amounts available under the Bank Facility will be sufficient to finance working
capital and meet its anticipated capital expenditures for at least the next
twelve months. There can be no assurance, however, that during this period there
will not be unanticipated acquisition opportunities or capital expenditure
requirements that create the need for additional cash, that the Company will
meet the financial targets under the Bank Facility to enable the Company to
borrow under the facility or that additional funds will be available at
favorable rates, if at all.
 
NEW ACCOUNTING PRONOUNCEMENT
 
     In February 1997, the Financial Accounting Standards Board issued Statement
of Financial Accounting Standards ("SFAS") No. 128, "Earnings Per Share." SFAS
No. 128 establishes a different method of computing net income per share than is
currently required under the provisions of Accounting Principles Board Opinion
No. 15. Under SFAS No. 128, the Company will be required to present both basic
net income per share and diluted net income per share. Basic net income per
share is expected to be higher than the currently presented net income per share
as the effect of dilutive stock options will not be considered in computing
basic net income per share. The impact on diluted net income per share is not
expected to be material.
 
     The Company plans to adopt SFAS No. 128 in its fiscal quarter ending
December 31, 1997, and at that time all historical net income per share data
presented will be restated to conform to the provisions of SFAS No. 128.
 
                                       31
<PAGE>   33
 
                                    BUSINESS
 
OVERVIEW
 
     Steri-Oss is a leading developer, manufacturer and marketer of a broad line
of dental implant systems, which include implants, abutments and related
surgical instruments. A dental implant is a small titanium screw or cylinder
that is surgically placed directly into the jaw and serves as a foundation for a
replacement tooth. An abutment is a small titanium attachment that is typically
screwed into or onto the implant and connects the artificial tooth to the
implant. The Company believes that its dental implant systems are superior to
traditional restorative treatments such as bridges and dentures because the
permanent nature of dental implants permits patients to regain most of the
functionality of their natural teeth. Dental implants also may reduce the
progressive atrophy of the jaw often caused by the absence of teeth. The Company
has demonstrated the safety and reliability of its implants at success rates of
over 96% (representing full integration of the implant with the bone) in seven
years of clinical studies involving more than 1,600 implant patients.
 
INDUSTRY BACKGROUND
 
     The American Dental Association estimates that 110 million people in the
United States are missing one or more teeth, representing approximately 40% of
the United States population. Tooth loss is caused by a variety of factors,
including trauma and periodontal disease, which is a leading cause of
destruction of tooth-supporting structures such as bone, gingiva and periodontal
ligament. MDI estimates that 70% to 80% of all adults in the United States have
some form of periodontal disease.
 
     Traditional restorative alternatives to address tooth loss have consisted
primarily of dentures and bridges. Since the introduction of the first modern
root form implants in 1982, dental implants have continued to gain acceptance as
an attractive alternative to dentures and bridges. According to MDI, the number
of implants placed annually by dental professionals in the United States has
more than tripled in less than a decade growing from approximately 120,000
implants placed in 1987 to approximately 415,000 implants placed in 1995. MDI
estimates that an average of 2.5 to 3.0 implants are placed in each implant
procedure. MDI estimates dental implant sales in the United States exceeded $130
million in 1996 and are expected to grow at a rate of approximately 6% per year.
The Company estimates that sales of dental implants outside the United States
were approximately $250 million in 1996 and estimates that the international
dental implant market is growing at a rate of approximately 10% per year.
 
     Utilization of dental implants by dental professionals and patients has
increased over the past few years, and the Company believes that significant
opportunities for growth still exist in the dental implant market because only
2% of patients in the United States who are missing one or more teeth have
undergone the implant procedure. Dental implants offer significant advantages
over other restorative products such as dentures and bridges. Dentures are
artificial teeth that may be attached to the surface of a patient's gum with an
adhesive. The adhesives used to attach dentures generally do not provide
long-term fixation to the gum and must be periodically reapplied. Dentures also
tend to move around in a patient's mouth, which may restrict the wearer's
ability to eat certain foods, and can trap food, which may lead to the
degradation of the adjacent natural teeth. A bridge generally consists of one or
more artificial teeth that are attached to a patient's natural teeth to span a
gap caused by missing teeth. In order to place a bridge into a patient's mouth,
the dental practitioner must grind or cut down the adjacent healthy, natural
teeth to prepare them to accommodate the bridge. Natural teeth that have been
ground down and shaped may deteriorate more rapidly than other healthy teeth.
Wearers of full or partial dentures do not benefit from the essential
stimulation and support that tooth roots provide to the surrounding jaw. This
can result in atrophy of the jaw and, over time, unsightly malformation of the
jaw.
 
     Dental implants, in contrast, serve as permanent replacements for a
patient's missing teeth and reduce the likelihood of bone resorption. Once
dental implants are surgically placed in the jaw, the bone typically fuses to
the implant, creating a secure, permanent anchor for an artificial tooth. The
secure nature of implants permits patients to regain most of the functionality
of their natural teeth. In addition, the implant procedure does not
 
                                       32
<PAGE>   34
 
require the destruction of the adjacent healthy teeth. Furthermore, implants
typically stimulate bone growth and allow a patient's jaw to retain its shape
and features.
 
STRATEGY
 
     The Company's objective is to become the leading worldwide developer,
manufacturer and marketer of dental implants and related products, while
increasing its profitability. The Company believes that over the last three
years, it has been one of the fastest growing participants in the United States
implant market. Furthermore, as a result of the Company's acquisition of the
dental business of Interpore in May 1997, the Company believes its implant unit
sales, on a combined basis in the United States in 1995, exceeded those of any
of its competitors. The key elements of the Company's strategy include the
following:
 
     - Increase Market Share in the United States and Foreign Markets. Steri-Oss
has established itself as a worldwide leader in the dental implant market. The
Company intends to capitalize on its reputation for quality products and service
to continue to increase its market share both domestically and internationally.
Increased utilization of the Company's implants by dental professionals is
necessary for continued market penetration. Accordingly, Steri-Oss intends to
increase its involvement in sponsoring and providing educational and training
programs for dental professionals and to expand marketing support to its 26
independent international distributors.
 
     - Continue to Develop Innovative Implant Products. The Company intends to
utilize its expertise in dental implant technology and to work closely with
clinicians to continue to develop new and enhanced dental implants and related
products. New and enhanced products have historically constituted a significant
portion of the Company's net sales. The Company was the first to introduce a
variety of innovative products, including precleaned sterile implants, HA-coated
threaded implants and a tapered, color-coded implant system. The Company intends
to continue to develop enhanced implant products to meet evolving market needs,
incorporate technological advancements and satisfy clinicians' preferences.
 
     - Expand into Additional Dental Specialty Markets. The Company intends to
take advantage of its broad distribution channels and strong reputation in the
dental industry to market additional dental specialty products to its customers.
The Company plans to focus on products that enhance the professionals' practice
and address the needs of growing markets, particularly the periodontal market.
In furtherance of this strategy, the Company recently commenced marketing two
products owned and manufactured by third parties, a periodontal tissue
monitoring kit and an HA bone filler for periodontal defects. The Company
intends to acquire, license or distribute additional dental specialty products
and to market these products through its existing distribution channels.
 
     - Acquire Complementary Dental Implant Businesses, Products and
Technologies. The Company believes that consolidation opportunities exist in the
dental implant market that will enable the Company to increase its penetration
of this market. For example, in May 1997, the Company acquired the dental
operations of Interpore, a manufacturer and distributor of dental implant
products and other periodontal products. The Company intends to continue to
expand its product offerings, distribution channels and market share through
acquisitions in the dental implant market. Potential acquisitions may include
complementary businesses, product lines, distribution rights, technologies or
other assets.
 
     - Continue to Improve Operating Efficiencies. By manufacturing a greater
proportion of its products in-house, the Company has been able to operate more
cost-effectively and benefit from greater economies of scale. Primarily as a
result of actions taken by the Company to reduce manufacturing costs and
increase operating efficiencies, the Company has reduced its cost of sales as a
percentage of net sales to 27.3% for 1996 from 31.7% for 1992. The Company
intends to continue to improve operating efficiencies primarily by expanding and
refining its manufacturing processes.
 
THE IMPLANT PROCEDURE
 
     The implant procedure involves a number of steps. During the initial step,
which typically is performed under a local anesthetic, an oral surgeon or
periodontist drills a hole in the patient's jaw and surgically inserts
 
                                       33
<PAGE>   35
 
the implant directly into the jaw. The implant typically integrates with the
patient's bone over the three to six months following the initial surgery. Once
the implant has attached itself firmly to the jaw, the general dentist or
prosthodontist then screws an abutment into or onto the implant. The dental
professional makes an impression of the patient's teeth and jaws so that an
artificial tooth can be fabricated for the patient. In the final step of the
implant procedure, the general dentist or the prosthodontist affixes an
artificial tooth, which is usually fabricated at a dental laboratory, onto the
abutment.
 
PRODUCTS
 
     The Company manufactures and markets a broad line of implant systems, which
include: (i) titanium implants that are surgically placed into the patient's
jaw; (ii) titanium abutments that are attached to the implants to serve as
connectors onto which artificial teeth are attached; and (iii) surgical
instruments that are used to insert and place implants and abutments, including
surgical consoles, drills and dental wrenches. Implants, abutments and surgical
instruments accounted for approximately 55.8%, 32.4% and 11.8%, respectively, of
the Company's net sales in 1996. Steri-Oss believes its product lines,
consisting of over 1,400 products, are sufficiently broad to meet the
requirements of most dental professionals. The Company continues to work closely
with clinicians to enhance its existing product lines and create new product
offerings. See "-- Product Innovations."
 
     Implants
 
     The Company currently manufactures 16 types of implants in various sizes.
All of the Company's implants are manufactured from titanium because it promotes
the best possible integration with surrounding jawbone ("osseointegration"), and
generally will not be rejected by the surrounding tissue due to titanium's
biocompatible nature. The list prices in the United States for the Company's
implants range from approximately $200 to $250 per unit.
 
     The Company's implants are offered in both threaded and cylindrical form in
a variety of diameters, lengths and shapes in order to suit the varying needs of
implant patients and dental professionals. The appropriate size and shape
required for a particular patient will depend on the structure of the patient's
jaw, the location of the implant site in the patient's jaw, the angle of
insertion and the bone density at the implant site. The Company's implants are
also offered uncoated or with one of two different coatings to suit differing
preferences among dental professionals and their patients.
 
     The Company currently makes implants in diameters ranging from 3.25 mm to 6
mm and in lengths ranging from 8 mm to 18 mm in the following categories:
 
     - Threaded Implants. Threaded implants are screwed into the patient's
jawbone. The Company uses a proprietary thread design that enhances
osseointegration by increasing the amount of bone volume between threads by 32%
over traditional V-shaped threads.
 
     - Cylindrical Implants. Cylindrical implants are smooth and have a simpler
surgical implantation protocol than threaded implants. Cylindrical implants
contain an indentation at the bottom of the implant and/or a depression running
length-wise up the implant to promote osseointegration.
 
     - Coated Implants (Threaded or Cylindrical). In addition to uncoated
implants, the Company offers both threaded and cylindrical implants with two
different rough coatings, HA and TPS. The Company was the first to market an
HA-coated threaded implant and has the only HA-coated threaded implant that has
been granted provisional approval by the American Dental Association. HA is a
bio-active ceramic coating commonly used with orthopedic implants that
facilitates osseointegration. Approximately 53% of the Company's implant sales
during 1996 were HA-coated. The Company estimates that the worldwide market for
HA-coated implants is currently 20% of the total implant market, and the Company
believes it is the largest manufacturer of HA-coated implants. TPS was first
introduced by the Company in 1995 and creates a highly textured titanium
surface, which increases the surface area of the implants and the contact with
bone. Approximately 16.4% of the Company's implant sales during 1996 were
TPS-coated.
 
                                       34
<PAGE>   36
 
     - Replace Implant System. The Replace Implant System was introduced in
March 1997 and incorporates a tapered design that closely resembles the shape of
a tooth root. The tapered implants are particularly beneficial for immediate
extraction sites in the anterior section of the mouth, between converging
implants or roots of adjacent teeth and wherever anatomically limiting
conditions exist. The implant products in the Replace Implant System are
color-coded for simple identification by the various professionals involved in
implant procedure. Replace implants are also offered in various lengths and
diameters, either uncoated or with HA or TPS coatings.
 
     Abutments
 
     Steri-Oss designs, manufactures and markets abutments that are typically
screwed into or onto the implants after the implants have fused with the jaw.
Abutments serve as connectors on which artificial teeth may be placed. The
Company has designed a variety of abutments to meet the requirements and
preferences of surgeons, restorative dentists and patients. In the past few
years, the Company has also commenced marketing two new types of abutments that
the Company licenses from Dental Imaging Associates, Inc. ("DIA"). The DIA
Anatomic Abutment is designed to accommodate the natural tooth diameter, tissue
depth and gingival tissue configurations. The second type of abutment, the
Bio-Esthetic Abutment, is designed to match natural root contours and requires
minimal preparation. The Company believes Bio-Esthetic Abutments typically offer
a superior aesthetic result.
 
     The Company's abutments are designed to provide maximum flexibility and
optimal aesthetic design, which the Company believes are critical to dentists in
developing treatment plans for their patients. The Company has designed its
abutments to be compatible with other companies' implants. The list prices in
the United States for the Company's abutments range from $35 to $160 per unit.
 
     Surgical Instruments
 
     The Company designs and manufactures, or has manufactured for it, surgical
tools and instruments for use with its implants and abutments. These instruments
include: (i) surgical instrument sets, including drills, dental wrenches and
kits for sizing abutments, which are typically packaged in containers for easy
sterilization and are color-coded and labeled for ease of use and storage, and
(ii) surgical consoles and hand tools to perform and monitor drilling and
placement procedures. The Company's instrument sets are designed to be used with
a variety of the Company's implants. While the list prices in the United States
for the Company's instrument sets range from $2,000 to $3,250 per set, the
Company may discount its surgical instruments to encourage practitioners to
switch to the Company's products.
 
PRODUCT INNOVATIONS
 
     Product innovations in the dental implant market usually consist of
refinements or enhancements of existing dental implant or abutment designs or
related products. Over the past few years, the Company has developed several
innovative new products. For example, Steri-Oss was the first dental implant
manufacturer to introduce precleaned sterile implants, HA-coated threaded
implants and a tapered, color-coded implant system.
 
     The Company's most recent product innovations include: (i) the Replace
Implant System, which consists of tapered implants and corresponding abutments
and instrument kits that are color-coded for simple identification by the
various professionals involved in the implant procedure; (ii) the 6 mm implant,
a wider diameter implant line, enabling the Company to offer expanded treatment
options that allow for improved aesthetics; and (iii) the Immediate Impression
Implant System, a sterile insertion instrument licensed from a third party that
allows the dental professional to take an immediate impression upon implant
insertion, which may reduce the number of patient visits during the implant
process.
 
     The Company derives a significant portion of its net sales each year from
sales of new products. The Company has focused its product development efforts
on both broadening its existing product lines and introducing new products. In
both cases, the objective is to offer enhanced implant solutions to patients and
professionals. The Company's research and development staff consists of five
employees who focus on new
 
                                       35
<PAGE>   37
 
   
product concepts and eight employees who focus on product engineering and the
technical aspects of product design. The Company also provides funding to
several universities to finance research and promotional studies related to the
Company's products.
    
 
     The Company's development efforts are the result of concepts developed
internally or through the Company's relationships with leading dental
professionals, including customers who provide feedback to the Company on their
preferences and needs. The Company also actively seeks licensing arrangements
with dental professionals or researchers to secure the right to manufacture and
market new product innovations created by such groups. For example, the Company
holds an exclusive license to manufacture and market the DIA Anatomic Abutments
and Bio-Esthetic Abutments under a licensing arrangement with a group of well
known prosthodontists and periodontists. Such licensing arrangements create
important relationships with dentists and academic institutions, thereby
enhancing the Company's reputation and visibility within the dental community.
 
MANUFACTURING
 
     The Company manufactures substantially all of its implants at its two ISO
9001 certified facilities in Yorba Linda, California. The Company has made a
substantial investment in these facilities, which include a Class 10,000 clean
room (a clean room with fewer than 10,000 particles which are five microns or
larger per cubic foot), precision automated equipment, including CNC machines,
and a robotically controlled coating area for the Company's proprietary HA
coating system.
 
     The Company's facilities are subject to applicable regulatory requirements.
The FDA periodically inspects the Company's manufacturing systems to confirm
continued compliance with the FDA's current QSR regulations. The Company's
facilities are also subject to regulation and periodic inspection by the State
of California. See "-- Government Regulation."
 
     The Company has received certification of conformance to ISO 9001 Standards
and Medical Device Directives, as well as the Commission Europeen (CE) Mark of
Conformity from TUV Product Services of Munich, Germany. These approvals
represent international symbols of quality system assurance and compliance with
applicable European Medical Device Directives, which assist the international
marketing of the Company's products.
 
     The Company has substantially increased its manufacturing capabilities
since 1993 in an effort to enhance profit margins and increase quality. The
Company currently manufactures a substantial portion of its own products and
performs all of the HA-coating for its products, but currently relies on outside
suppliers to coat its TPS-coated implants and to manufacture certain components
including electrical consoles, hand tools, and those short-run products for
which the Company cannot achieve cost efficiencies. The Company plans to bring
TPS-coating capabilities in-house. The Company's manufacturing activities
primarily consist of (i) cutting, machining and initial cleaning, which are
performed at a leased facility close to its headquarters, and (ii) final
cleaning, sterilization, assembly (in certain circumstances), packaging, coating
and testing, which are conducted at the Company's headquarters. The principal
raw materials used in the Company's products, including titanium and HA, are
available from a number of suppliers. The Company does not maintain any
long-term supply contracts with any of its suppliers. The Company currently
operates three shifts per day, five days per week. The Company believes that it
may require additional manufacturing facilities within the next year to
accommodate anticipated growth.
 
     The Company also uses small amounts of hazardous substances in its
manufacturing processes. As a result, the Company is subject to a variety of
governmental regulations relating to the use, storage, discharge, handling and
disposal of toxic or other hazardous substances, chemicals, materials or waste.
The Company has engaged a third party contractor to handle the removal of such
hazardous substances.
 
     Steri-Oss has established a number of quality control procedures to
maintain the quality of its products. All products manufactured by the Company
undergo a series of inspections and tests throughout the manufacturing process
to ensure that each product complies with the Company's product specifications
and aesthetic requirements. For example, each implant manufactured by Steri-Oss
will receive no fewer than nine
 
                                       36
<PAGE>   38
 
separate inspections. Any product that does not conform to the Company's visual,
functional and aesthetic requirements will be rejected. In addition, all
products purchased by outside suppliers are inspected by the Company's
personnel. Steri-Oss also conducts periodic self audits to review and ensure its
compliance with the Company's quality controls and QSR and environmental
regulations.
 
CUSTOMERS, MARKETING AND SALES
 
     Dental Professionals
 
     The Company sells its products directly to dental professionals in the
United States and Canada through its sales representatives and uses independent
distributors to sell its products to dental professionals abroad. Because the
dental implant procedure involves a number of steps and requires the use of
surgical as well as restorative techniques, several professionals are usually
involved in the implant process. Accordingly, the Company's customers include
practitioners from multiple disciplines in dentistry, including oral surgeons,
periodontists, implantologists, prosthodontists and general dentists.
 
     Typically, a general dentist will refer a patient to an oral surgeon or
periodontist to perform the initial implant surgery. After the oral surgeon or
periodontist has inserted the implant, the general dentist will usually perform
all or part of the restorative work (i.e., the final placement of the artificial
tooth) or will refer the patient to a prosthodontist for such work. Less
frequently, a general dentist will perform the entire implant procedure alone.
Such a general dentist is commonly referred to as an implantologist. The actual
artificial tooth used by the general dentist, prosthodontist or implantologist
is usually fabricated at a dental laboratory. In Europe, where specialization is
less common, the general practitioner typically performs most, if not all, of
the implant procedure.
 
     According to the American Dental Association, in 1991, there were
approximately 6,800 oral surgeons, 4,700 periodontists, 2,900 prosthodontists
and 115,000 general dentists in the United States.
 
     Marketing
 
     The Company markets its products to all dental professionals involved in
the implant procedure. Steri-Oss has historically targeted oral surgeons,
periodontists and implantologists as its primary customers because approximately
91% of all oral surgeons and 55% of all periodontists in the United States have
performed a dental implant procedure. The Company has also focused its marketing
efforts on general dentists by encouraging them to participate in and recommend
dental implants to their patients. The Company has chosen to target this market
segment because general dentists usually have the most contact with potential
implant patients and often serve as a referral source for oral surgeons and
periodontists. In addition, the Company believes that a large number of general
dentists have yet to use dental implants on a regular basis and represent a
significant number of potential new customers. Because the Company's customers
have varying experience with dental implants, the Company's marketing efforts
must address the particular needs and requirements of professionals who already
practice implant dentistry as well as general practitioners who may not be
familiar with the implant procedure.
 
     The Company's marketing efforts are directed towards three distinct goals:
(i) encourage dental professionals using competitor's products to switch to the
Company's products, (ii) service existing customers by introducing additional
products and providing training and educational programs to them, and (iii)
introduce implants more broadly to a large population of dental professionals
who have yet to realize the advantages of dental implants. In addition to
utilizing a direct sales force in North America and distributors abroad, the
Company has initiated a variety of different marketing programs to accomplish
each of these goals, including:
 
     - Educational and Training Programs. The Company sponsors several
introductory level educational programs both in the United States and abroad and
holds training seminars and surgery training programs at its own facilities. The
Company also offers a number of advanced courses tailored to the needs of
professionals who regularly perform implant procedures. Although the Company
historically has focused its efforts on providing educational and training
programs to clinicians in North America, it intends to expand its
 
                                       37
<PAGE>   39
 
   
involvement in providing such programs abroad. In 1996, over 18,000 members of
the dental community attended educational programs sponsored by the Company. The
Company works with major dental organizations (American Association of Oral
Maxillofacial Surgeons, American Association of Periodontists and Academy of
Osseointegration), dental schools, key customers, international distributors and
leading clinicians to maximize exposure of the Company's products at continuing
education programs worldwide. In addition, the Company promotes educational
programs at select private practices, which offer the opportunity to witness
live surgical procedures. In 1995, the Company added a training facility and
surgical suite to its Yorba Linda headquarters. The Company has entered into a
consulting agreement with Dr. Jack Hahn, a general dentist and dental implant
specialist, to conduct training programs for the Company and advise the Company
on technical issues. Dr. Hahn is a well renowned worldwide lecturer on dental
implants.
    
 
     - International Conferences. The Company has sponsored four major
international conferences within the past five years that have attracted many
members of the global dental implant community. In 1997, the Company held a four
day international conference on "Exceeding Patients' Expectations: An Integrated
Surgical, Prosthetic and Marketing Approach to Excellence in Implant Dentistry"
in Orlando, Florida. This conference was attended by more than 600 dental
professionals from 20 countries representing various dental disciplines.
 
     - Strategic Relationships with Vendors and Clinicians. The Company has
formed strategic relationships with key vendors, clinicians, dental publishers,
dental advertising agencies, and dental practice management consulting groups.
The Company believes its strategic relationships enable it to gain and maintain
brand recognition among all types of dental practitioners.
 
     - Printed Advertising Materials and Video Tapes. Using its in-house
graphics department and outside consultants, the Company has developed extensive
training videos and printed promotional materials. The Company distributes such
materials to dental professionals through its sales representatives and
international distributors, as well as through direct mail advertising
campaigns.
 
     - Newsletter. The Company publishes a newsletter three times each year
containing information relating to recent developments in the dental implant
market, the Company's products, training and educational programs on dental
implant procedures and results from clinical studies on dental implants. This
newsletter is distributed to over 20,000 dental professionals in the United
States and Canada. The Company publishes a similar newsletter twice each year
that is translated into German, French, Italian, Spanish, Japanese and Korean
and distributed to approximately 15,000 dental professionals in foreign
countries.
 
     - Journal of Dental Symposia. In order to promote a broad understanding of
the Company's educational efforts, the Company has entered into a collaborative
effort with a publisher to publish the Journal of Dental Symposia, which is
distributed annually to more than 10,000 dental professionals, including
approximately 3,000 members of the Academy of Osseointegration. This journal
includes academic articles relating to topics discussed at seminars and
workshops at the Company's international conferences.
 
     Sales and Distribution
 
     The Company currently employs over 40 sales representatives throughout the
United States and Canada who call directly on oral surgeons, periodontists,
prosthodontists and implantologists, as well as select general dentists and
dental laboratories. The Company believes that its direct sales force is
essential to its ability to maintain brand loyalty among its customers in North
America and to increase its market share. The Company's sales force is currently
organized by geographic regions into five different territories. The Company
plans to increase its direct sales force commensurate with sales increases in
North America.
 
     The Company also markets and sells its products through 26 independent
distributors in more than 35 foreign countries, including Australia, Belgium,
Brazil, France, Germany, Israel, Italy, Japan, Korea, Mexico, the Netherlands,
New Zealand, Portugal, Spain, Switzerland and the United Kingdom.
 
     Metalor, the Company's distributor in Germany and the Netherlands, has
agreed to dedicate 24 members of its sales staff in 1997 to the sale of the
Company's products exclusively. Metalor accounted for approximately 8.2% of the
Company's net sales during 1996 and 10.6% of net sales for the six months ended
 
                                       38
<PAGE>   40
 
   
June 30, 1997. In 1990, the Company entered into an exclusive one year
distribution agreement with Metalor that automatically renews for successive one
year terms unless either the Company or Metalor gives prior notice of its
intention not to renew the agreement for an additional term. This agreement
prohibits Metalor from selling any competitor's dental implants or related
products within Metalor's territory. The Company also entered into similar one
year distribution agreements with three affiliates of Metalor who distribute the
Company's products in France, Switzerland and the United Kingdom. Metalor and
its affiliates collectively accounted for approximately 12.1% of the Company's
net sales during 1996 and 13.9% of net sales for the six months ended June 30,
1997.
    
 
     The Company believes that the international dental implant market will
continue to grow at a more rapid rate than North American dental implant market
for the next few years, particularly in Europe where dental implants have a
longer history. In an effort to take advantage of the anticipated growth in
international markets, the Company intends to continue to provide increased
marketing support to its international distributors.
 
CUSTOMER SERVICE AND SUPPORT
 
     The Company seeks to build upon customer loyalty by providing high quality
customer service and support. In addition to its educational courses and
training seminars, the Company offers to send a technical sales representative
to assist dental professionals with their first implant procedure using
Steri-Oss products. The Company also employs a full-time staff dentist and three
full-time certified dental technicians to respond to customers' technical
questions regarding the Company's products and the implant procedure. In
addition, Steri-Oss employs both domestic and international customer support
representatives to answer general customer inquiries and to assist customers
with order and re-order information. The Company maintains a direct relationship
with its dental community customers by handling all shipping and invoicing
functions through its customer support organization.
 
     The Company offers a ten year warranty on all of its implants and
abutments. If a product fails prior to the expiration of the warranty, the
Company agrees to replace it at no cost and to give the customer a credit
towards the purchase of new products. Since the introduction of this program in
1993, the Company has not experienced any significant warranty expenses.
 
COMPETITION
 
     The dental implant industry is characterized by intense competition.
Steri-Oss competes directly with a number of companies offering dental implants
and related products both in the United States and abroad, including Nobel
Biocare AB, Friatec AG, 3i and Sulzer Calcitek Inc., certain of which have
substantially greater financial, marketing, sales, distribution and development
resources than the Company. Certain of the Company's competitors also have
established a greater international presence than the Company. In several
countries, including Germany and Switzerland, the Company competes with
companies that are based in such countries. The competitors' local presence in
such markets may provide them with a competitive advantage over the Company. In
addition, several competitors in foreign markets sell directly in such markets,
which may be more effective than the Company's indirect distribution channels in
such markets.
 
     The Company believes the principal competitive factors in the dental
implant market are product performance, breadth of product line, brand name
recognition, customer loyalty, scope of regulatory approvals and clinical
trials, price and sales and marketing capabilities. The Company believes its
prices are competitive with other high quality implant products. Due in part to
the importance of quality and customer service and to the minor cost of the
implant relative to the implant procedure, the Company does not believe that
price is a major competitive factor.
 
     The Company believes that it competes favorably against other dental
implant companies due to the Company's broad range of quality dental implants
and related products and provides extensive training and educational programs
for dental professionals. Increased competition or the failure to compete
effectively in the implant industry may result in price reductions, reduced
gross margins and loss of market share, all of
 
                                       39
<PAGE>   41
 
which could have a material adverse effect on the Company's business, financial
condition and results of operations.
 
     The Company's products also compete against alternative restorative
treatments such as bridges and dentures, which are generally less expensive to
the patient, are less invasive and can be implemented more quickly. New
restorative technologies may be developed that are as effective as, or more
effective or easier to use than, those offered by the Company, which could
render the Company's products noncompetitive or obsolete.
 
GOVERNMENT REGULATION
 
     The Company's products are subject to extensive regulation by the FDA and
certain other federal, state and local governmental authorities, as well as
similar regulatory agencies in other countries. Such regulations cover the
preclinical and clinical testing, manufacture, labelling, distribution and
promotion of medical devices and record keeping with respect thereto. The FDA
generally classifies medical devices in commercial distribution into one of
three classes: Class I, Class II or Class III devices, which classifications are
based upon the controls the FDA deems necessary to reasonably ensure the safety
and effectiveness of the medical devices. A new medical device cannot be
commercially distributed until the FDA has accepted for review and cleared a
510(k) or has approved a PMA on such medical device or implant.
 
     The 510(k) process requires a manufacturer to demonstrate that the new
product is substantially equivalent (in terms of safety, efficacy and intended
use) to certain 510(k) Class I, Class II or pre-1976 Class III medical devices
(for which the FDA has not called for a PMA) that are already commercially
available and lawfully being sold on the market. The PMA approval process is
more time-consuming and burdensome than the 510(k) process and generally
requires more detailed preclinical and clinical studies, as well as
manufacturing data and other information.
 
     Class I and Class II devices may be approved pursuant to a 510(k)
notification process as opposed to the lengthy PMA process required for most
post-1976 Class III products. While dental implants are technically classified
as Class III products, to date, the FDA has permitted the manufacturers of
dental implants to use the 510(k) notification to clear the commercial sale of
dental implants. Since January 1, 1994, the Company has obtained 34 510(k)
clearances from the FDA covering a broad range of the Company's products.
 
     In 1990, Congress enacted the Safe Medical Device Act of 1990, which
required the FDA to either down-classify certain Class III devices (including
dental implants) to Class I or II, or publish a date for the call for PMAs for
any remaining Class III devices on the market. The Company expects that at some
future date certain dental implants will be down-classified to Class II, but
others will remain as Class III. There is a possibility that some of the
Company's dental implants may remain Class III and that a PMA will be required
to continue marketing some or all of the Company's dental implant products. The
Company has been collecting clinical data to support a potential PMA. There can
be no assurance that if the FDA calls for a PMA for dental implants, the Company
would receive a PMA approval, if required, for its dental implants on a timely
basis, if at all.
 
     Governmental regulation may also prevent or substantially delay the
marketing of the Company's proposed products, cause the Company to undertake
costly procedures and furnish a competitive advantage to certain of the
Company's competitors who have greater financial, administrative and research
and development resources. After approval, the FDA may require post-marketing
approval surveillance programs to monitor the effects of an approved medical
device. FDA approval may be withdrawn for noncompliance with regulatory
standards or the occurrence of unforeseen problems following initial marketing.
In addition, product modifications may require the submission of a new 510(k)
notification or PMA supplement and future products may require 510(k) clearance
or PMA approval. There can be no assurance that marketing clearances or
approvals will be obtained on a timely basis or at all. Delays in receiving, the
failure to receive or the cost of complying with such clearances could have a
material adverse effect on the Company's business, financial condition and
results of operations.
 
                                       40
<PAGE>   42
 
     The Company is also registered as a medical device manufacturer with the
FDA and with state agencies such as the Food and Drug Branch of the California
Department of Health Services. The FDA and state agencies inspect the Company
from time to time to determine whether the Company is in compliance with various
regulations relating to medical device manufacturing, including the FDA's QSR
regulations that govern manufacturing, testing, quality control and product
labelling of medical devices. In connection with the FDA's inspection of the
Company's facilities in April 1997, the FDA issued a warning letter to the
Company citing the Company's failure to comply with certain provisions of the
current QSR regulations. The Company believes that it has taken appropriate
corrective actions to address each of the violations cited in the warning
letter. The warning letter did not prohibit the Company from obtaining premarket
clearance or approval for new products nor did it require the Company to
withdraw or remove any of its products from the market.
 
     The Company must also comply with similar registration requirements of
foreign governments and with import and export regulations when distributing its
products to foreign nations. Each foreign country's regulatory requirements for
product approval and distribution are unique and may require the expenditure of
substantial time, money and effort to obtain and maintain.
 
PROPRIETARY RIGHTS
 
     The Company relies to some extent on proprietary technology, which it
protects primarily through trade secret and other intellectual property laws,
proprietary know-how, licensing arrangements, patents and non-disclosure
agreements. The Company currently holds five United States patents relating to
its products and has applications pending for seven additional United States
patents. The Company's patents expire beginning in August 2006. The Company
believes that although the patents often are necessary to protect its technology
and products, the extensive FDA approval and compliance requirements,
proprietary manufacturing processes, customer loyalty and access to distribution
channels serve as significant barriers to entry into the dental implant market.
 
     The Company licenses certain of its core technology pursuant to exclusive
and semi-exclusive licenses. In April 1994, the Company entered into a five year
exclusive, worldwide license to manufacture and market the DIA Anatomic Abutment
System and the Bio-Esthetic Abutment System and the Immediate Impression Implant
(covered by nine United States patents). The Company pays royalties to DIA based
on a percentage of the Company's net sales of the licensed products, subject to
a certain annual minimum royalties. The Company also licenses two dental
implants (covered by seven United States patents) from VentPlant, pursuant to a
semiexclusive license agreement entered into in September 1991 that provides for
a fixed royalty per unit sold. This agreement terminates upon the expiration of
the licensed patents, subject to earlier termination for cause. In addition, the
Company has entered into a letter of intent with Dr. Axel Kirsch, a world
renowned oral surgeon and the inventor of the IMZ Dental Implant System, to
distribute the IMZ products in the United States. The Company is currently
distributing such products pursuant to an oral agreement that is cancelable by
either party upon 30 days prior notice. If the Company is required to obtain
licenses under patents or proprietary rights of others, there can be no
assurance that any required licenses would be made available on terms acceptable
to the Company, if at all.
 
     There can be no assurance that any future patents or licenses will be
issued, that any issued patents or other intellectual property rights of the
Company will provide meaningful protection for the Company's proprietary
technology or that the steps taken by the Company to protect its proprietary
technologies will be adequate to prevent misappropriation by third parties in
the United States or abroad. In addition, the laws of some foreign countries do
not protect the Company's proprietary rights as fully as do the laws of the
United States. Accordingly, effective protection of intellectual property may be
unavailable or limited in certain foreign countries.
 
     Litigation may be necessary in the future to enforce the Company's
intellectual property rights, to determine the validity and scope of the
proprietary rights of others or to defend the Company against claims of
infringement or invalidity by others. The cost of addressing any intellectual
property litigation claim, both in terms of legal fees and expenses and the
diversion of management's efforts, regardless of whether the claim is valid,
could be significant. An adverse outcome in such litigation or similar
proceedings could subject the
 
                                       41
<PAGE>   43
 
Company to significant liabilities to third parties, require disputed rights to
be licensed from others, or require the Company to cease marketing or using
certain products, any of which could have a material adverse effect on the
Company's business, financial condition and results of operations.
 
     The Company requires each of its employees to enter into a proprietary
rights and nondisclosure agreement pursuant to which the employee agrees to
maintain the confidentiality of all of the Company's proprietary information
and, subject to certain exceptions, to assign to the Company all rights in any
proprietary information or technology made or contributed by the employee during
his or her employment. In addition, the Company regularly enters into
nondisclosure agreements with third parties, such as consultants and suppliers.
In spite of these precautions, it may be possible for third parties to copy,
develop or otherwise obtain and use the Company's proprietary technology without
authorization or to develop similar technology independently.
 
EMPLOYEES
 
     As of September 30, 1997, the Company had 239 full-time employees,
including 13 employees engaged in research and development, 87 engaged in
manufacturing, 22 engaged in regulatory affairs and quality assurance, 67
engaged in sales and marketing, 16 engaged in customer service and support and
34 engaged in general administration and finance activities. None of these
employees is represented by a union, and the Company has never experienced a
work stoppage or strike. The Company considers its employee relations to be
good.
 
FACILITIES
 
     The Company leases three facilities, which have approximately 35,000 square
feet, 7,100 square feet and 2,000 square feet, respectively, in Yorba Linda,
California, pursuant to four leases that expire in December 1997. These
buildings are used as the Company's headquarters and include administration,
manufacturing, marketing and sales, storage, customer service and distribution
facilities. The Company also leases approximately 1,500 square feet in Toronto,
Canada, which is used for distribution, training and sales. The Company is
negotiating extensions on its leases in Yorba Linda and actively seeking
additional leased space in order to expand its manufacturing capabilities.
 
PRODUCT LIABILITY AND LEGAL PROCEEDINGS; INSURANCE
 
     The Company is subject to an inherent risk of product liability claims that
may involve significant defense costs. Bausch & Lomb has agreed to indemnify the
Company up to an aggregate amount of $28.5 million against any claims and losses
from defects in the design, manufacture or production of any product sold by S-O
prior to the Acquisition. In August 1995, one implant patient filed an action in
the Superior Court of California, County of Riverside, alleging that a defect in
the manufacturing of the Company's implants caused the implant to fracture.
Bausch & Lomb is contractually obligated to indemnify the Company for this claim
and has assumed the defense of this matter. Although the Company currently has
product liability insurance there can be no assurance that this coverage will be
adequate to protect the Company against future claims. In the event the Company
is held liable for damages in excess of its insurance coverage limits or outside
of its insurance coverage, which damages are not indemnified by Bausch & Lomb,
the Company's business, financial condition and results of operations could be
materially and adversely affected.
 
                                       42
<PAGE>   44
 
                                   MANAGEMENT
 
DIRECTORS, EXECUTIVE OFFICERS AND KEY EMPLOYEES
 
     Set forth below is certain information regarding the directors and
executive officers of the Company as of August 1997.
 
<TABLE>
<CAPTION>
           NAME               AGE                              POSITION
- --------------------------    ----    ----------------------------------------------------------
<S>                           <C>     <C>
Kenneth A. Darienzo            58     Chairman of the Board and Chief Executive Officer
Martin J. Dymek                41     President
Kenneth Krueger                51     Executive Vice President, Operations
Bruce D. Nye                   53     Vice President, Chief Financial Officer and Corporate
                                      Secretary
Andrew C. Cowen(1)(2)          27     Director
Walter W. Grist(1)(2)          57     Director
T. Michael Long                54     Director
Douglas E. Rogers(2)           43     Director
Frederic M. Seegal(1)          49     Director
Henry Wendt                    64     Director
</TABLE>
 
- ---------------
(1) Member of Audit Committee
(2) Member of Compensation Committee
 
     KENNETH A. DARIENZO has served as the Chief Executive Officer of the
Company and its predecessors since August 1989 and has been a Director of the
Company since the Acquisition in November 1996. Mr. Darienzo served as the
President of the Company until the appointment of Mr. Dymek in May 1997 and
became the Company's Chairman of the Board in August 1997. From 1988 to 1989,
Mr. Darienzo was the General Manager of Unitek, a global orthodontic company and
a subsidiary of the Minnesota Mining & Manufacturing Co. ("3M"). Mr. Darienzo
also served in a number of management positions with 3M from 1975 to 1988,
including positions as the Marketing Director for its Dental Division and the
National Sales Manager of its orthopedic business.
 
     MARTIN J. DYMEK has been the President of the Company since May 1997, and
prior to that served as the Senior Vice President, Marketing and Sales of the
Company and its predecessor since 1995, as Vice President of Marketing of the
Company's predecessor from 1991 to 1995 and as International Sales Manager of
the Company's predecessor in 1990 and 1991. Mr. Dymek continues to be
responsible for the Company's sales and marketing activities. Prior to joining
S-O, Mr. Dymek held marketing and sales positions with Shofu Dental, a Japanese
dental manufacturing company, from 1982 to 1990. Mr. Dymek is currently a member
of the International Congress of Oral Implantologists and is active in the
Dental Manufacturers of America.
 
     KENNETH KRUEGER has been the Executive Vice President, Operations of the
Company and its predecessors since 1987. Prior to that, Mr. Krueger served in a
number of operational and general management positions at the Company's
predecessor from 1984 to 1987. From 1981 to 1984, Mr. Krueger was the Manager of
the Cardiovascular Research and Development Division of Shiley, Inc., a Pfizer
company, and from 1966 to 1981, he served in management positions in operations,
research and development, production technology and production engineering with
Shiley, Inc. Mr. Krueger is currently a member of the Society for Biomaterials,
the International Congress of Oral Implantologists, the American Society of
Testing Material, the Academy of Implant Dentistry and the International
Association for Dental Research.
 
     BRUCE D. NYE joined the Company in May 1997 as its Vice President, Chief
Financial Officer and Corporate Secretary. Prior to joining the Company, Mr. Nye
was the Senior Vice President of Corporate Development and prior to that Vice
President and Chief Financial Officer of The Cerplex Group, Inc., a company that
provides repair services for electronic equipment, from August 1993 to May 1997.
From 1992 to July 1993, Mr. Nye was Vice President and Chief Financial Officer
for Sparta, Inc. and from 1991 to 1992, he acted as an independent consultant
and principal in an asset acquisition for Aluminum Precision Products. Mr. Nye
was Senior Vice President and Chief Financial Officer for Hadson Defense
Systems, Inc. from 1983 to 1990. Prior to 1983, he was a Senior Audit Manager
with Price Waterhouse LLP.
 
                                       43
<PAGE>   45
 
     ANDREW C. COWEN has been a member of the Company's Board of Directors since
the Acquisition in November 1996. Mr. Cowen is currently an Assistant Manager of
Brown Brothers Harriman & Co., a private banking and investment management
company ("Brown Brothers"), where he has been employed for the past five years.
Brown Brothers is the general partner of The 1818 Fund II, L.P., a New York
limited partnership. Mr. Cowen is also a director of Computerized Medical
Systems, Inc.
 
     WALTER W. GRIST has been a member of the Board of Directors of the Company
since the Acquisition in November 1996. For more than the past five years, Mr.
Grist has been a Senior Manager of Brown Brothers. Mr. Grist is also a director
of Computerized Medical Systems, Inc. and WellCare Management Group, Inc.
 
     T. MICHAEL LONG has been a member of the Board of Directors of the Company
since the Acquisition in November 1996. Mr. Long is currently a partner of Brown
Brothers, where he has been employed since 1971. He is the co-manager of The
1818 Fund, L.P. and The 1818 Fund II, L.P. Mr. Long is also a director of
Columbia/HCA Healthcare Corp., Computerized Medical Systems, Inc., Ecko Group,
Inc., Gulf Canada Resources, Ltd., Nuevo Energy Company and Sports Holdings
Corporation. Mr. Long is a Trustee of The Hospital Chaplainry, Inc., a nonprofit
agency that trains chaplains from over 50 religious traditions.
 
     DOUGLAS E. ROGERS has served as a member of the Board of Directors of the
Company since the Acquisition in November 1996. Mr. Rogers is currently a
Managing Director of DLJ Merchant Banking II, Inc., an affiliate of DLJ. Since
1992, Mr. Rogers has been engaged in the development, organization and financing
of numerous health care companies. From 1995 to 1997, he was a Managing Director
of Lighthouse Capital Partners and its affiliates, which were involved in
providing financial services and advice to small to medium sized medical product
and dental companies. From 1987 to 1992, he was a Director of Baring Brothers &
Co., Inc. where he was responsible for United States investment banking
activities. From 1983 to 1987, Mr. Rogers was a Senior Vice President at Lehman
Brothers. Prior to that, Mr. Rogers was a Vice President and founder of the
Health Care Group at Kidder, Peabody & Co. Mr. Rogers is also a founder of
several pharmaceutical research companies, including Neurogen Corporation and
Texas Biotechnology Group. Mr. Rogers is also a Director of Wilson Greatbatch
Ltd. and Computerized Medical Systems, Inc. and has served as a Director of Cold
Spring Harbor Laboratory Associates.
 
     FREDERIC M. SEEGAL has been a member of the Company's Board of Directors
since January 1997. Mr. Seegal is currently the President of Wasserstein Perella
Group, Inc., an investment banking firm, where he has been employed for three
years. From 1990 to 1994, Mr. Seegal was a Managing Director of Salomon
Brothers. Prior to that Mr. Seegal was a Managing Director of Lehman Brothers
where he was employed from 1974 to 1990.
 
     HENRY WENDT has served as a member of the Board of Directors of the Company
since the Acquisition in November 1996 and was the Chairman of the Board of the
Company until August 1997. He is currently a Managing Director of DLJ Merchant
Banking II, Inc. From 1995 to 1997, he was a Managing Director of Lighthouse
Capital Partners and its affiliates. Mr. Wendt was Chairman of the Board of
SmithKline Beecham p.l.c., a pharmaceutical company, and its subsidiary,
SmithKline Beecham Corporation, from 1989 until his retirement in 1994. Mr.
Wendt is also a director of Allergan, Inc., Atlantic Richfield Co., Availl,
Inc., The Egypt Investment Company and West Marine Corp. He is a trustee of the
Trilateral Commission and Trustee Emeritus of the American Enterprise Institute.
In 1994 Mr. Wendt was awarded the Order of the Rising Sun Gold and Silver Star
by the Government of Japan, the highest honor given to a foreigner. In 1995, he
was named as Honorary Commander of the British Empire by HRH Queen Elizabeth II.
 
     The Company's Certificate provides for the Board of Directors to be divided
into three classes, with each class to be as nearly equal in number of directors
as possible. At each annual meeting of the stockholders, the successors to the
class of directors whose term expires at the time are elected to hold office for
a term of three years, and until their respective successors are elected and
qualified, so that the term of one class of directors expires at each such
annual meeting. The terms of office of the Company's directors expire as
follows: Messrs. Cowen and Grist in 1998; Messrs. Long and Rogers in 1999; and
Messrs. Darienzo, Seegal and Wendt in 2000. See "Description of Capital
Stock -- Certain Provisions of the Company's Certificate of Incorporation and
Bylaws."
 
                                       44
<PAGE>   46
 
     The Board of Directors has a Compensation Committee (the "Compensation
Committee"), which is responsible for making recommendations regarding salaries,
bonuses and other compensation matters for the Company's executive officers. The
Compensation Committee serves as the administrator of the 1997 Plan. The members
of the Compensation Committee are Messrs. Cowen, Grist and Rogers. None of these
individuals were at any time during 1996 an officer or employee of the Company.
 
     The Board of Directors also has an Audit Committee (the "Audit Committee"),
which supervises and makes recommendations and decisions with respect to the
periodic audits of the Company's financial results. The members of the Audit
Committee are Messrs. Cowen, Grist and Seegal.
 
DIRECTOR COMPENSATION
 
     Except as described below, the directors do not receive cash compensation
for services on the Board of Directors or any Committee thereof. All
non-employee Board members are reimbursed for their out-of-pocket expenses
incurred in connection with serving on the Board of Directors.
 
EXECUTIVE COMPENSATION
 
     The following table sets forth certain summary information concerning the
compensation earned by the Company's Chief Executive Officer and its three other
most highly compensated executive officers (the "Named Executive Officers")
whose total salary and bonus for 1996 exceeded $100,000 for services rendered to
the Company and its predecessors in all capacities during that year. The Named
Executive Officers are the only executive officers of the Company.
 
<TABLE>
<CAPTION>
                                                                        LONG TERM
                                                                       COMPENSATION
                                                                       ------------
                                                                          AWARDS
                                                                       ------------
                                              ANNUAL COMPENSATION       SECURITIES
                 NAME AND                     --------------------      UNDERLYING       ALL OTHER
          PRINCIPAL POSITIONS(S)               SALARY       BONUS       OPTIONS(1)      COMPENSATION
- ------------------------------------------    --------     -------     ------------     ------------
<S>                                           <C>          <C>         <C>              <C>
Kenneth A. Darienzo.......................    $219,615     $56,600(2)          --         $ 96,700(3)
  Chairman of the Board and
  Chief Executive Officer
Martin J. Dymek...........................     131,000      40,000             --           46,400(4)
  President
Kenneth Krueger...........................     136,000      13,776(2)          --           41,400(5)
  Executive Vice President, Operations
Bruce D. Nye(6)...........................          --          --             --               --
  Vice President, Chief Financial Officer
  and Corporate Secretary
</TABLE>
 
- ---------------
 
(1) While the Company did not make any restricted stock grants or option grants
    to any of the Named Executive Officers during the year ended December 31,
    1996, the Company granted non-qualified stock options to purchase Common
    Stock to each of the Named Executive Officers in January and May 1997, some
    of which were fully vested and the remaining options will vest at the
    earlier of the consummation of the Offering or in equal annual installments
    if the Company attains certain financial criteria in the year. All of the
    options were granted at an exercise price of $0.40, and the fully vested
    options will terminate in January 2007 and the performance options will
    terminate in May 2007. In August 1997, the Company granted incentive stock
    options ("ISOs") to the Named Executive Officers at an exercise price equal
    to the initial public offering price. These options terminate in August 2007
    but will automatically accelerate in the event of the termination of such
    holders' employment with the Company within 18 months following a change in
    control of the Company. Twenty-five percent of such options vest on the
    first anniversary of the grant date and the remaining options vest
    thereafter in 36 equal monthly installments. The options granted to the
    Named Executive Officers are as follows: Mr. Darienzo (100,000 fully vested
    options, 134,411 performance options and 30,000 ISOs), Mr. Dymek (50,000
    fully vested options, 53,825 performance options and 21,000 ISOs), Mr.
    Krueger (50,000 fully vested options, 53,825 performance options and 16,000
    ISOs) and Mr. Nye (16,055 performance options and 10,000 ISOs).
 
(2) Such amount was earned and accrued in the year ended December 31, 1996 but
    was not actually paid until 1997.
 
                                       45
<PAGE>   47
 
(3) Consists of (i) cash compensation in the amount of $90,300 for additional
    services rendered to the Company's predecessor in connection with the
    Acquisition and (ii) a matching contribution in the amount of $6,400 made by
    the Company under its Section 401(k) Profit Sharing Plan.
 
(4) Consists of (i) cash compensation in the amount of $40,000 for additional
    services rendered to the Company's predecessor in connection with the
    Acquisition and (ii) a matching contribution in the amount of $6,400 made by
    the Company under its Section 401(k) Profit Sharing Plan.
 
(5) Consists of (i) cash compensation in the amount of $35,000 for additional
    services rendered to the Company's predecessor in connection with the
    Acquisition and (ii) a matching contribution in the amount of $6,400 made by
    the Company under its Section 401(k) Profit Sharing Plan.
 
(6) Mr. Nye joined the Company as its Vice President, Chief Financial Officer
    and Corporate Secretary in May 1997. He is currently paid an annual salary
    of $160,000. In May 1997, Mr. Nye was granted options to purchase 16,055
    shares of Common Stock which will vest at the earlier of the consummation of
    the Offering or in equal annual installments if the Company attains certain
    financial objectives. All of such options were granted at an exercise price
    of $0.40, and such options will terminate in May 2007.
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
     No executive officer of the Company serves as a member of the Board of
Directors or Compensation Committee of any entity that has one or more executive
officers serving as a member of the Company's Board of Directors or Compensation
Committee.
 
COMPENSATION PLANS AND ARRANGEMENTS
 
     Employment Contracts
 
     In November 1996, the Company entered into an employment agreement with
each of Messrs. Darienzo, Dymek and Krueger for a term ending December 31, 1999.
The annual base salaries of Messrs. Darienzo, Dymek and Krueger as of the date
hereof are $300,000, $199,000 and $155,000, respectively. Each of such officers
is also eligible to receive a bonus based upon the Company's attainment of
certain performance criteria, which bonus will not exceed 100% of such officer's
annual base salary. The employment agreements provide that the Board may
increase the annual base salaries and bonuses of such officers as appropriate.
In the event the Company terminates any such agreement other than for cause, the
Company must pay to such officer, in addition to all accrued and unpaid salary
and benefits, his salary and certain benefits for 18 months following the date
of such termination. If the Company terminates such officer's employment for
cause or if such officer terminates his employment for any reason whatsoever,
then the officer will be entitled to receive only accrued but unpaid salary
through the date of such termination.
 
     1997 Stock Incentive Plan
 
     The Company's 1997 Plan is intended to serve as a comprehensive equity
incentive program for the employees, non-employee members of the Company's Board
of Directors (the "Board") or the board of directors of any parent or subsidiary
of the Company, and independent consultants who provide valuable services to the
Company. The 1997 Plan became effective on August 20, 1997 upon adoption by the
Board and was subsequently approved by the stockholders in August 1997. A total
of 400,000 shares of Common Stock has been reserved for issuance under the 1997
Plan. The share reserve will be increased automatically on the first day of
January of each calendar year, beginning in January 1998, by a number of shares
equal to 2% of the number of shares of Common Stock outstanding on the last day
of the immediately preceding calendar year. In no event may any one participant
in the 1997 Plan receive option grants or direct stock issuances for more than
200,000 shares in the aggregate per calendar year.
 
     The 1997 Plan is divided into four separate incentive programs: (i) the
Discretionary Option Grant Program under which eligible individuals in the
Company's employ or service (including officers and other employees,
non-employee Board members and independent consultants) may, at the discretion
of the Plan Administrator, be granted options to purchase shares of Common Stock
at an exercise price not less than 85% of their fair market value on the grant
date, (ii) the Stock Issuance Program under which such individuals
 
                                       46
<PAGE>   48
 
may, in the Plan Administrator's discretion, be issued shares of Common Stock
directly through the purchase of such shares at a price not less than 100% of
their fair market value at the time of issuance or as a bonus tied to the
performance of services, (iii) the Salary Investment Option Grant Program under
which executive officers and other highly compensated employees may elect to
apply a portion of their base salary to the acquisition of special stock option
grants, and (iv) the Director Fee Option Grant Program pursuant to which the
non-employee Board members may apply a portion of the annual retainer fee
otherwise payable to them in cash each year to the acquisition of special stock
option grants.
 
     The Discretionary Option Grant, Stock Issuance and Salary Investment Option
Grant Programs will be administered by the Compensation Committee. The
Compensation Committee, as Plan Administrator, will have complete discretion to
determine which eligible individuals are to receive option grants or stock
issuances, the time or times when such option grants or stock issuances are to
be made, the number of shares subject to each such grant or issuance, the
vesting schedule to be in effect for the option grants or stock issuances, the
maximum term for which any granted option is to remain outstanding and the
status of any granted option as either an incentive stock option or a
non-statutory stock option under the federal tax laws, except that all options
granted under the Salary Investment Option Grant Program will be non-statutory
stock options. The administration of the Director Fee Option Grant Program will
be self-executing in accordance with the express provisions of that program.
 
     The exercise price for the shares of Common Stock subject to option grants
made under the 1997 Plan may be paid in cash or in shares of Common Stock valued
at fair market value on the exercise date. The option may also be exercised
through a same-day sale program without any cash outlay by the optionee. In
addition, the Plan Administrator may provide financial assistance to one or more
optionees in the exercise of their outstanding options by allowing such
individuals to deliver a full-recourse, interest-bearing promissory note in
payment of the exercise price and any associated withholding taxes incurred in
connection with such exercise.
 
     In the event that the Company is acquired by merger or asset sale, each
outstanding option under the Discretionary Option Grant Program which is not to
be assumed by the successor corporation will automatically accelerate in full,
and all unvested shares under the Stock Issuance Program will immediately vest,
except to the extent the Company's repurchase rights with respect to those
shares are to be assigned to the successor corporation. The Plan Administrator
will have the authority under the Discretionary Option Grant and Stock Issuance
Programs to grant options and to structure repurchase rights so that the shares
subject to those options or repurchase rights will automatically vest in the
event the individual's service is terminated, whether involuntarily or through a
resignation for good reason, within a specified period (not to exceed eighteen
(18) months) following (i) a merger or asset sale in which those options are
assumed or those repurchase rights are assigned or (ii) a change in control of
the Company effected by a successful tender offer for more than 50% of the
outstanding voting stock or by proxy contest for the election of Board members.
The Plan Administrator will also have the discretion to provide for the
automatic acceleration of options and the lapse of any repurchase rights upon
(i) a change in control of the Company effected by a successful tender offer for
more than 50% of the Company's outstanding voting stock or by proxy contest for
the election of Board members or (ii) the termination of the individual's
service, whether involuntarily or through a resignation for good reason, within
a specified period (not to exceed eighteen (18) months) following such a change
in control.
 
     Stock appreciation rights may be issued in tandem with option grants made
under the Discretionary Option Grant Program. The holders of such rights will
have the opportunity to elect between the exercise of their outstanding stock
options for shares of Common Stock or the surrender of those options for an
appreciation distribution from the Company equal to the excess of (i) the fair
market value of the vested shares of Common Stock subject to the surrendered
option over (ii) the aggregate exercise price payable for such shares. Such
appreciation distribution may be made in cash or in shares of Common Stock.
 
     The Plan Administrator has the authority to effect the cancellation of
outstanding options under the Discretionary Option Grant Program in return for
the grant of new options for the same or different number of
 
                                       47
<PAGE>   49
 
option shares with an exercise price per share based upon the fair market value
of the Common Stock on the new grant date.
 
     In the event the Plan Administrator elects to activate the Salary
Investment Option Grant Program, each executive officer and other highly
compensated employee of the Company selected for participation may elect, prior
to the start of the calendar year, to reduce his or her base salary for that
calendar year by a specified dollar amount not less than $10,000 nor more than
$50,000. If such election is approved by the Plan Administrator, the officer
will be granted, on or before the last trading day in January in the calendar
year for which the salary reduction is to be in effect, a non-statutory option
to purchase that number of shares of Common Stock determined by dividing the
salary reduction amount by two-thirds of the fair market value per share of
Common Stock on the grant date. The option will be exercisable at a price per
share equal to one-third of the fair market value of the option shares on the
grant date. As a result, the total spread on the option shares at the time of
grant will be equal to the amount of salary invested in that option. The option
will vest in a series of twelve (12) equal monthly installments over the
calendar year for which the salary reduction is in effect and will be subject to
full and immediate vesting upon certain changes in the ownership or control of
the Company.
 
     In the event the Director Fee Option Grant Program is activated in the
future, each non-employee Board member would have the opportunity to apply all
or a portion of any annual retainer fee otherwise payable in cash to the
acquisition of a below-market option grant. The option grant would automatically
be made on the first trading day in January in the year for which the retainer
fee would otherwise be payable in cash. The option will have an exercise price
per share equal to one-third of the fair market value of the option shares on
the grant date, and the number of shares subject to the option will be
determined by dividing the amount of the retainer fee applied to the program by
two-thirds of the fair market value per share of Common Stock on the grant date.
As a result, the total spread on the option (the fair market value of the option
shares on the grant date less the aggregate exercise price payable for those
shares) will be equal to the portion of the retainer fee invested in that
option. The option will become exercisable for the option shares in a series of
twelve (12) equal monthly installments over the calendar year for which the
election is in effect. However, the option will become immediately exercisable
for all the option shares upon (i) certain changes in the ownership or control
of the Company or (ii) the death or disability of the optionee while serving as
a Board member.
 
     The Board may amend or modify the 1997 Plan at any time. The 1997 Plan will
terminate on August 19, 2007, unless sooner terminated by the Board.
 
     On August 20, 1997, the Board granted options to purchase an aggregate of
226,000 shares of Common Stock under the 1997 Plan to certain employees of the
Company, including the following executive officers: Kenneth Darienzo - 30,000
options; Martin Dymek - 21,000 options; Kenneth Krueger - 16,000 options and
Bruce Nye - 10,000 options. On September 25, 1997, the Board granted options to
purchase an aggregate of 9,000 shares of Common Stock to three employees of the
Company. All of the options granted under the 1997 Plan vest at the rate of 25%
on the first anniversary of their respective grant dates and thereafter in 36
equal monthly installments. All of such options have an exercise price equal to
the initial public offering price.
 
401(K) PROFIT SHARING PLAN
 
     The Company has an employee profit sharing plan that qualifies as a
deferred salary arrangement under Section 401(k) of the Internal Revenue Code
(the "401(k) Plan"). The 401(k) Plan allows eligible employees to defer up to
15% of their pretax earnings, subject to the Internal Revenue Service annual
contribution limit. The Company makes matching contributions equal to 100% of
employee contributions up to 4% of the participant's eligible compensation. The
Company's contributions to the 401(k) Plan for 1996 since the Acquisition
totaled $33,000.
 
                                       48
<PAGE>   50
 
LIMITATION OF LIABILITY AND INDEMNIFICATION
 
     The Company's Certificate provides that, pursuant to Delaware law, the
Company's directors shall not be liable for monetary damages for breach of the
directors' fiduciary duty of care to the Company and its stockholders. This
provision in the Certificate does not eliminate the duty of care, and in
appropriate circumstances equitable remedies such as injunctive or other forms
of non-monetary relief against the directors will remain available under
Delaware law. In addition, each director will continue to be subject to
liability for breach of the director's duty of loyalty to the Company or its
stockholders, for acts or omissions not in good faith or involving intentional
misconduct or knowing violations of law, for actions leading to improper
personal benefit to the director, and for payment of dividends or approval of
stock repurchases or redemptions that are unlawful under Delaware law. The
provision also does not affect a director's responsibilities under any other
law, such as the federal securities laws or state or federal environmental laws.
 
     Under Section 145 of the Delaware General Corporation Law, the Company can
indemnify its directors and officers against liabilities they may incur in such
capacities, including liabilities under the Securities Act. The Company's Bylaws
provide that the Company will indemnify its directors and officers to the
fullest extent permitted by law and require the Company to advance litigation
expenses upon receipt by the Company of an undertaking by the director or
officer to repay such advances if it is ultimately determined that the director
or officer is not entitled to indemnification. The Bylaws further provide that
rights conferred under such Bylaws do not exclude any other right such persons
may have or acquire under any bylaw, agreement, vote of the stockholders or
disinterested directors or otherwise.
 
     The Company has entered into agreements to indemnify its executive officers
and all of its directors in addition to the indemnification provided for in the
Bylaws. These agreements will, among other things, indemnify those parties for
certain expenses (including attorneys' fees), judgments, fines and settlement
amounts incurred by such person in any action or proceeding, including any
action by or in the right of the Company, on account of services by such person
as an officer or a director of the Company, or as an officer or a director of
any other company or enterprise to which the person provides services at the
request of the Company.
 
     Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to directors, officers or persons controlling the Company
pursuant to the indemnification agreements or the Company's charter documents,
the Company has been informed that in the opinion of the Securities and Exchange
Commission, such indemnification is against public policy as expressed in the
Securities Act and is therefore unenforceable.
 
     The Company has also obtained directors' and officers' liability insurance
for its directors and executive officers.
 
                                       49
<PAGE>   51
 
                              CERTAIN TRANSACTIONS
ACQUISITION
 
     In November 1996, the Company acquired certain of the assets of its
predecessor, S-O, from Bausch & Lomb. In conjunction with the Acquisition, the
Company entered into a Securities Purchase Agreement with The 1818 Fund II, L.P.
(the "1818 Fund"), pursuant to which the Company sold 22,000 shares of Class A
Preferred Stock and warrants to purchase 2,900,000 shares of Common Stock at a
nominal exercise price to the 1818 Fund for $22.0 million. T. Michael Long,
Walter W. Grist and Andrew C. Cowen, directors of the Company, are a partner,
senior manager and associate manager, respectively, of Brown Brothers, which is
the general partner of the 1818 Fund, and were elected to the Company's Board
pursuant to rights granted to the 1818 Fund in connection with the Acquisition.
The 1818 Fund's right to require the Company to nominate up to three individuals
designated by it as directors terminates upon the consummation of the Offering.
 
   
     In conjunction with the Acquisition, the Company also sold (i) 3,185 shares
of Class C Preferred Stock and warrants to purchase 477,750 shares of Common
Stock at a nominal exercise price to Exeter Venture Lenders, L.P. and Exeter
Equity Partners, L.P. (collectively, "Exeter") and S-O Acquisition LLC for $3.2
million, and (ii) 50,000 shares of Common Stock and warrants to purchase 745,400
shares of Common Stock to S-O Management LLC at a nominal exercise price for
$1,000. The Company pays S-O Management LLC $250,000 per year pursuant to a
Management Services Agreement that terminates upon consummation of the Offering.
Prior to the consummation of the Offering, each of S-O Acquisition LLC and S-O
Management LLC will distribute the shares of Common Stock and Class C Preferred
Stock held by such entity to the individual members of each such entity (the
"LLC Distribution"). As a result of the LLC Distribution (i) Henry Wendt, a
director of the Company, will own 346,201 shares of Common Stock and
approximately 494 shares of Class C Preferred Stock, (ii) Anvers L.P., one of
the general partners of which is an affiliate of Furman Selz LLC, will own
74,997 shares of Common Stock and approximately 500 shares of Class C Preferred
Stock, (iii) Douglas E. Rogers, a director of the Company, will own 266,975
shares of Common Stock and approximately nine shares of Class C Preferred Stock,
(iv) Richard Gumer, a Managing Director of Furman Selz LLC, will own 151,118
shares of Common Stock and approximately five shares of Class C Preferred Stock
and (iv) Wasserstein Perella Group, Inc. will own 79,540 shares of Common Stock.
Frederic M. Seegal, a director of the Company, is the President of Wasserstein
Perella Group, Inc.
    
 
     In addition, in connection with the Acquisition, the Company entered into
Note and Warrant Purchase Agreements with Equitable Life and Exeter. Under the
terms of the Note and Warrant Purchase Agreements, the Company sold (i) $10.0
million aggregate principal amount of its 16% Series A Subordinated Note and
warrants to purchase 240,000 shares of Common Stock at a nominal exercise price
to Equitable Life and (ii) $2.5 million aggregate principal amount of its 14%
Series B Subordinated Notes and warrants to purchase 88,000 shares of Common
Stock at a nominal exercise price to Exeter. Equitable Life is a wholly-owned
subsidiary of The Equitable Companies Incorporated, which owns approximately 77%
of DLJ, one of the Underwriters.
 
     Concurrently with the Acquisition, the Company entered into (i) a
registration rights agreement with the 1818 Fund, the S-O Parties, Exeter and
Equitable Life and (ii) a stockholders agreement, which terminates upon
consummation of the Offering, with such parties and Messrs. Wendt, Rogers and
Gumer. See "Description of Capital Stock."
 
DIRECTOR OPTIONS
 
     In January 1997, the Company granted each member of the Company's Board of
Directors (other than Mr. Darienzo) a stock option to acquire 35,700 shares of
the Company's Common Stock at an exercise price of $1.00 per share.
 
PREFERRED STOCK CONVERSION
 
     On August 21, 1997, the Company and the holders of Class A Preferred Stock
and Class C Preferred Stock agreed to amend the rights of the Class A Preferred
Stock and Class C Preferred Stock so that 17,471 shares of Class A Preferred
Stock and 2,527 shares of Class C Preferred Stock will automatically
 
                                       50
<PAGE>   52
 
convert into an aggregate of 1,433,547 shares of Common Stock upon consummation
of the Offering, in lieu of mandatory redemption. The conversion price will be
equal to 93% of the initial public offering price in this Offering. The
remaining outstanding Class A Preferred Stock and Class C Preferred Stock will
be redeemed out of the proceeds of the Offering. As discussed above, certain
affiliates of the Company are holders of such shares of Class A Preferred Stock
and Class B Preferred Stock.
 
RELATIONSHIPS BETWEEN THE COMPANY, CERTAIN DIRECTORS AND THE UNDERWRITERS
 
   
     Each of Messrs. Rogers and Wendt, directors of the Company, is a Managing
Director of DLJ Merchant Banking II, Inc., an affiliate of DLJ. Mr. Rogers
beneficially owns 35,700 shares of Common Stock issuable upon exercise of
fully-vested stock options, and will own 266,975 shares of Common Stock and
approximately nine shares of Class C Preferred Stock following the LLC
Distribution. Approximately seven of such shares of Class C Preferred Stock will
be converted into 528 shares of Common Stock in the Preferred Stock Conversion
and the remaining two shares of Class C Preferred Stock will be redeemed with
net proceeds of the Offering for approximately $2,000 plus accrued dividends.
Mr. Wendt beneficially owns 35,700 shares of Common Stock issuable upon exercise
of fully-vested stock options, and will own 346,201 shares of Common Stock and
approximately 494 shares of Class C Preferred Stock following the LLC
Distribution. Approximately 392 of such shares of Class C Preferred Stock will
be converted into approximately 28,126 shares of Common Stock in the Preferred
Stock Conversion and the remaining 102 shares will be redeemed with net proceeds
of the Offering for approximately $102,000 plus accrued dividends.
    
 
     Equitable Life beneficially owns (i) Warrants to purchase approximately
240,000 shares of Common Stock and (ii) $10.0 million aggregate principal amount
of 16% Series A Subordinated Note of the Company. The Company intends to use a
portion of the net proceeds of the Offering to repay all outstanding
indebtedness under the 16% Series A Subordinated Note. Equitable Life is a
wholly owned subsidiary of The Equitable Companies Incorporated, which owns
approximately 77% of DLJ.
 
   
     An affiliate of Furman Selz LLC, one of the Underwriters, is the general
partner of Anvers, L.P., which will beneficially own 74,997 shares of Common
Stock, and 500 shares of Class C Preferred Stock of the Company following the
LLC Distribution. Approximately 397 shares of such Class C Preferred Stock will
be converted into 28,440 shares of Common Stock and the remaining shares will be
redeemed for approximately $103,000 plus accrued dividends.
    
 
     Mr. Gumer, a Managing Director of Furman Selz LLC, will beneficially own
151,118 shares of Common Stock and approximately five shares of Class C
Preferred Stock following the LLC Distribution. Approximately four of such
shares of Class C Preferred Stock will be converted into approximately 299
shares of Common Stock in the Preferred Stock Conversion and the remaining one
share will be redeemed with net proceeds of the Offering for approximately
$1,000 plus accrued dividends.
 
     The Offering is being made pursuant to Rule 2720 of the Conduct Rules of
the National Association of Securities Dealers, Inc. ("NASD"), because certain
associates of DLJ beneficially own in excess of 10% of the Common Stock of the
Company prior to the Offering and affiliates of DLJ will receive in excess of
10% of the proceeds of the Offering as a result of the redemption of the Class C
Preferred Stock and the repayment of the 16% Series A Subordinated Note of the
Company. Rule 2720 provides that, among other things, when a NASD member
participates in the underwriting of equity securities of a company with which
there exists a conflict of interest, the price at which such equity securities
are to be distributed to the public can be no higher than that recommended by a
"qualified independent underwriter" meeting certain standards ("QIU"). UBS
Securities LLC will assume the responsibilities of acting as the QIU in
connection with the Offering.
 
                                       51
<PAGE>   53
 
                             PRINCIPAL STOCKHOLDERS
 
     The following table sets forth certain information with respect to the
beneficial ownership of the Company's Common Stock by (i) each person (or group
of affiliated persons) known by the Company to beneficially own more than five
percent of the outstanding shares of Common Stock, (ii) each of the Company's
directors, (iii) each of the Named Executive Officers, and (iv) all directors
and executive officers of the Company as a group. Except as otherwise indicated,
the Company believes that the beneficial owners listed below have sole
investment and voting power with respect to such shares, subject to community
property laws, where applicable.
 
<TABLE>
<CAPTION>
                                                                                      PERCENTAGE OF
                                                                                        CLASS(1)
                                                                    NUMBER        ---------------------
                                                                 BENEFICIALLY      BEFORE       AFTER
                                                                   OWNED(1)       OFFERING     OFFERING
                                                                 ------------     --------     --------
<S>                                                              <C>              <C>          <C>
The 1818 Fund II, L.P.(2)......................................     4,152,401       66.6%        38.0%
  c/o Brown Brothers Harriman & Co.
  59 Wall Street
  New York, NY 10005
Kenneth A. Darienzo(3).........................................       234,411        3.6          2.1
Martin J. Dymek(4).............................................       103,825        1.6            *
Kenneth Krueger(5).............................................       103,825        1.6            *
Bruce D. Nye(6)................................................        16,055          *            *
Andrew C. Cowen(7).............................................        35,700          *            *
Walter W. Grist(8).............................................        35,700          *            *
T. Michael Long(9).............................................     4,188,101       66.8         38.2
Douglas E. Rogers(10)..........................................       303,203        4.8          2.8
Frederic M. Seegal(11).........................................       115,240        1.8          1.1
Henry Wendt(12)................................................       410,025        6.5          3.7
All directors and executive officers as a group (10
  persons)(13).................................................     5,546,085       80.3%        47.8%
</TABLE>
 
- ---------------
  *  Less than one percent.
 
 (1) Beneficial ownership is based on 6,233,547 shares of Common Stock
     outstanding as of September 30, 1997 and 10,933,547 shares of Common Stock
     outstanding after completion of the Offering. Shares of Common Stock
     subject to options that are currently exercisable or exercisable within 60
     days of the date of this Prospectus are deemed to be outstanding and
     beneficially owned by the person holding such option for the purpose of
     computing beneficial ownership of such person, but are not treated as
     outstanding for the purposes of computing the percentage ownership of any
     other person. As of September 30, 1997, S-O Acquisition LLC was the record
     owner of 348,584 shares of Common Stock and S-O Management LLC was the
     record owner of 800,573 shares of Common Stock. Each of these entities will
     distribute the shares of Common Stock held by it to the individual members
     of such entity prior to the consummation of the Offering. This table
     assumes that such distributions have been made, and each owner of an equity
     interest in S-O Acquisition LLC and S-O Management LLC is presented as the
     beneficial owner of a percentage of the shares of Common Stock owned by S-O
     Acquisition LLC and S-O Management LLC equal to such owner's proportionate
     equity interest in each such entity.
 
 (2) The general partner of the 1818 Fund is Brown Brothers. T. Michael Long, a
     director of the Company, is a general partner of Brown Brothers. See
     footnote 9.
 
 (3) Mr. Darienzo's shares include (i) 100,000 shares of Common Stock issuable
     upon exercise of fully-vested stock options and (ii) 134,411 shares of
     Common Stock issuable upon exercise of stock options that will vest upon
     consummation of the Offering.
 
 (4) Mr. Dymek's shares include (i) 50,000 shares of Common Stock issuable upon
     exercise of fully-vested stock options and (ii) 53,825 shares of Common
     Stock issuable upon exercise of stock options that will vest upon
     consummation of the Offering.
 
 (5) Mr. Krueger's shares include (i) 50,000 shares of Common Stock issuable
     upon exercise of fully-vested stock options and (ii) 53,825 shares of
     Common Stock issuable upon exercise of stock options that will vest upon
     consummation of the Offering.
 
 (6) Mr. Nye's shares include 16,055 shares of Common Stock issuable upon
     exercise of stock options that will vest upon consummation of the Offering.
 
                                       52
<PAGE>   54
 
 (7) Mr. Cowen's shares include 35,700 shares of Common Stock issuable upon
     exercise of fully-vested stock options.
 
 (8) Mr. Grist's shares include 35,700 shares of Common Stock issuable upon
     exercise of fully-vested stock options.
 
 (9) Mr. Long's shares include (i) 35,700 shares of Common Stock issuable upon
     exercise of fully-vested stock options and (ii) 4,152,401 shares of Common
     Stock owned by the 1818 Fund, which Mr. Long may be deemed to beneficially
     own because he has voting power of the 1818 Fund's shares of Common Stock.
     Mr. Long disclaims beneficial ownership of all shares referenced in (ii)
     above.
 
(10) Mr. Rogers' shares include 35,700 shares of Common Stock issuable upon
     exercise of fully-vested stock options.
 
(11) Mr. Seegal's shares include (i) 35,700 shares of Common Stock issuable upon
     exercise of fully-vested stock options and (ii) 79,540 shares of Common
     Stock owned by Wasserstein Perella Group, Inc., which Mr. Seegal may be
     deemed to beneficially own because he has voting power of such shares of
     Common Stock. Mr. Seegal disclaims beneficial ownership of all shares
     referenced in (ii) above.
 
(12) Mr. Wendt's shares include 35,700 shares of Common Stock issuable upon
     exercise of fully-vested stock options.
 
(13) The shares held by the officers and directors as a group include 672,316
     shares of Common Stock issuable upon exercise of options exercisable within
     60 days of the date of this Prospectus.
 
                                       53
<PAGE>   55
 
                          DESCRIPTION OF CAPITAL STOCK
 
     Upon completion of the Offering and the concurrent exercise of all
outstanding warrants to acquire Common Stock, and conversion to Common Stock or
redemption of all outstanding shares of Preferred Stock, the authorized capital
stock of the Company will consist of 35,000,000 shares of Common Stock, $.0001
par value per share, of which 10,933,547 shares will be outstanding, and
5,000,000 shares of Preferred Stock, $.0001 par value per share, none of which
will be outstanding. The following description of the capital stock of the
Company and certain provisions of the Company's Certificate and Bylaws gives
effect to the exercise of all outstanding warrants and the conversion to Common
Stock or redemption of all outstanding shares of Preferred Stock. The
description below is a summary and is qualified in its entirety by the
provisions of the Certificate and Bylaws, copies of which have been filed as
exhibits to the Registration Statement of which this Prospectus is a part.
 
COMMON STOCK
 
     Each holder of Common Stock is entitled to one vote for each share held.
Following the Offering, the holders of Common Stock, voting as a single class,
will be entitled to elect all of the directors of the Company. Holders of Common
Stock are entitled to receive ratably such dividends as may be declared by the
Board of Directors out of funds legally available therefor. In the event of a
liquidation, dissolution or winding up of the Company, holders of Common Stock
would be entitled to share ratably in the Company's assets remaining after the
payment of liabilities and the satisfaction of any liquidation preference
granted to the holders of any outstanding shares of Preferred Stock. Holders of
Common Stock have no preemptive or other subscription rights. The shares of
Common Stock are not convertible into any other security. The outstanding shares
of Common Stock are, and the shares being offered hereby will be, upon issuance
and sale, fully paid and nonassessable.
 
PREFERRED STOCK
 
     The Certificate authorizes 5,000,000 shares of Preferred Stock that may be
issued in series from time to time with such designations, relative rights,
priorities, preferences, qualifications, limitations and restrictions thereof,
to the extent that such are not fixed in the Company's Certificate, as the Board
of Directors determines. The rights, preferences, limitations and restrictions
of different series of Preferred Stock may differ with respect to dividend
rates, amounts payable on liquidation, voting rights, conversion rights,
redemption provisions, sinking fund provisions and other matters. The Board of
Directors may authorize the issuance of Preferred Stock that ranks senior to the
Common Stock with respect to the payment of dividends and the distribution of
assets on liquidation. In addition, the Board of Directors is authorized to fix
the limitations and restrictions, if any, upon the payment of dividends on
Common Stock to be effective while any shares of Preferred Stock are
outstanding. The Board of Directors, without stockholder approval, can issue
Preferred Stock with voting and conversion rights which could adversely affect
the voting power of the holders of Common Stock. The Company believes that the
Preferred Stock will provide the Company with increased flexibility in
structuring possible future financings and acquisitions, and in meeting other
corporate needs that might arise. Having such authorized shares available for
issuance will allow the Company to issue shares of Preferred Stock without the
expense and delay of a special stockholders' meeting. Although the Company's
Board of Directors has no intention at the present time of doing so, it could
issue a series of Preferred Stock, the terms of which, subject to certain
limitations imposed by the securities laws, could impede the completion of a
merger, tender offer or other takeover attempt. The Company's Board of Directors
will make any determination to issue such shares based on its judgment as to the
best interests of the Company and its stockholders at the time of issuance. The
Company's Board of Directors, in so acting, could issue Preferred Stock having
terms that could 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.
 
DELAWARE LAW
 
     Upon consummation of the Offering, the Company will be subject to the
provisions of Section 203 of the Delaware General Corporation Law, an
anti-takeover law. In general, the statute prohibits a publicly held
 
                                       54
<PAGE>   56
 
Delaware corporation from engaging in a "business combination" with an
"interested stockholder" for a period of three years after the date that the
person became an interested stockholder unless (with certain exceptions) the
business combination or the transaction in which the person became an interested
stockholder is approved in a prescribed manner. Generally, a "business
combination" includes a merger, asset or stock sale, or other transaction
resulting in a financial benefit to the stockholder. Generally, an "interested
stockholder" is a person who, together with affiliates and associates, owns (or
within three years prior, did own) 15% or more of a corporation's outstanding
voting stock. This provision may have the effect of delaying, deferring or
preventing a change in control of the Company without further action by the
stockholders.
 
CERTAIN PROVISIONS OF THE COMPANY'S CERTIFICATE OF INCORPORATION AND BYLAWS
 
     Provisions of the Company's Certificate and Bylaws may make more difficult
the acquisition of control of the Company by various means, such as a tender
offer, open market purchases not approved by the Company's Board of Directors, a
proxy contest or otherwise and could thereby deprive the stockholders of
opportunities to realize a premium on their Common Stock. In addition, they may
adversely affect the prevailing market price of the stock. These provisions are
intended to enhance the likelihood of continuity and stability in the
composition of the Board of Directors of the Company and in the policies
formulated by the Board of Directors and to discourage certain types of
transactions, described below, which may involve an actual or threatened change
in control of the Company. The provisions are also intended to discourage
certain tactics that may be used in proxy fights. These provisions also
encourage persons seeking to acquire control of the Company to consult first
with the Company's Board of Directors to negotiate the terms of any proposed
business combination or offer. The provisions are designed to reduce the
vulnerability of the Company to an unsolicited proposal for a takeover that does
not contemplate the acquisition of all outstanding shares of the Company or that
is otherwise unfair to stockholders of the Company. The Board of Directors
believes that, as a general rule, such takeover proposals would not be in the
best interests of the Company and its stockholders. See "Risk
Factors -- Potential Anti-Takeover Effects of Delaware Law and the Company's
Certificate of Incorporation and Bylaws."
 
     Directors; Classified Board; Removal; Filling Vacancies and Amendment. The
Certificate provides that the number of directors will be fixed from time to
time by resolution adopted by a majority of the directors then in office.
Currently, the number is set at seven. The Certificate provides for the Board of
Directors to be divided into three classes, with each class to be as nearly
equal in number of directors as possible. Further, subject to the rights of the
holders of any series of Preferred Stock then outstanding, the Certificate
authorizes only the Board of Directors to fill vacancies, including newly
created directorships. Accordingly, this provision could prevent a stockholder
from obtaining majority representation on the Board of Directors by enlarging
the Board of Directors and filling the new directorships with its own nominees.
The Certificate also provides that directors of the Company may be removed by
stockholders only for cause and only by the affirmative vote of holders of
two-thirds of the outstanding shares of voting stock.
 
     Special Stockholder Meetings. The Certificate provides that special
meetings of the stockholders, for any purpose or purposes, unless required by
law, shall be called by the President or Secretary pursuant to a request in
writing of the President, a majority of the entire Board of Directors or
stockholders owning not less than 50% of the entire voting stock of the Company
then issued and outstanding. A special meeting may not be held absent such a
written request. The request shall state the purpose or purposes of the proposed
meeting. Such limitation on the right of stockholders to call a special meeting
could make it more difficult for stockholders to initiate action that is opposed
by the Board of Directors. Such action on the part of stockholders could include
the removal of an incumbent director, the election of a stockholder nominee as a
director or the implementation of a rule requiring stockholder ratification of
specific defensive strategies that have been adopted by the Board of Directors
with respect to unsolicited takeover bids. In addition, the limited ability of
the stockholders to call a special meeting of stockholders may make it more
difficult to change the existing Board of Directors and management.
 
     Advance Notice Requirements for Stockholder Proposals and Director
Nominations. The Certificate establishes an advance notice procedure for the
nomination, other than by or at the discretion of the Board of Directors or a
committee thereof, of candidates for election as directors as well as for other
stockholder proposals to be considered at special or annual stockholders'
meetings. Notice of stockholder proposals and
 
                                       55
<PAGE>   57
 
director nominations must be timely given in writing to the Secretary of the
Company prior to the meeting at which the matters are to be acted upon or the
directors are to be elected. To be timely, notice must be received in general at
the principal offices of the Company not less than 60 days nor more than 90 days
prior to the meeting of stockholders. The purpose of requiring advance notice is
to afford the Board of Directors an opportunity to consider the qualifications
of the proposed nominees or the merits of other stockholder proposals and, to
the extent deemed necessary or desirable by the Board of Directors, to inform
stockholders about those matters.
 
     Written Consent; Special Meetings of Stockholders. The Certificate
prohibits the taking of stockholder action by written consent without a meeting.
These provisions will make it more difficult for stockholders to take action
opposed by the Board of Directors.
 
     Amendment of Certain Provisions of the Certificate. The Certificate
generally requires the affirmative vote of the holders of at least two-thirds of
the outstanding voting stock in order to amend any provisions of the Certificate
concerning (i) the removal or appointment of directors, (ii) the authority of
stockholders to act by written consent, (iii) the required vote to amend the
Certificate, (iv) calling a special meeting of stockholders, (v) procedure and
content of stockholder proposals concerning business to be conducted at a
meeting of stockholders, and (vi) director nominations by stockholders. These
voting requirements will make it more difficult for minority stockholders to
make changes in the Certificate that could be designed to facilitate the
exercise of control over the Company. On the other hand, the requirement for
approval by at least a two-thirds stockholder vote will enable the holders of a
minority of the voting stock of the Company to prevent the holders of a majority
or more of such securities from amending such provisions of the Certificate.
Following the completion of the offering, the Company's present directors and
executive officers and their respective affiliates will beneficially own
approximately 47.8% of the outstanding Common Stock, giving them veto power with
respect to any stockholder action or approval requiring a two-thirds vote.
 
REGISTRATION RIGHTS
 
   
     After the Offering, pursuant to registration rights agreements (the
"Registration Rights Agreements") entered into in connection with the
Acquisition, holders (the "Holders") of approximately 6,233,547 shares of Common
Stock will be entitled to certain demand and piggy-back registration rights with
respect to such shares. Pursuant to the Registration Rights Agreements, as
modified by certain waivers of rights thereunder that were agreed upon in
connection with the Offering, certain Holders may, after the consummation of the
Offering, request that the Company file a registration statement under the
Securities Act and, upon such request and subject to certain conditions and
restrictions, the Company generally will be required to use its best efforts to
effect one such registration. Additionally, within 24 months following the
consummation of the Offering, the Company is required to file a shelf
registration statement on Form S-3 to register 2,900,000 shares of Common Stock
acquired as a result of the exercise of warrants held by the Class A Preferred
Stock investors and possibly any additional shares of Common Stock held by such
investors; however, such required registration is subject to postponement if it
would interfere with certain material transactions of the Company then under
consideration. In addition, if the Company proposes to register any of its
securities either for its own account or for the account of other stockholders,
the Company is required, with certain exceptions, to notify the Holders and,
subject to certain limitations, include in any underwritten registration all of
the shares of Common Stock requested to be included by the Holders. The Company
is generally obligated to bear the expenses, other than underwriting discounts
and sales commissions, of these registrations. For a period of 180 days after
the date of this Prospectus, the Company has agreed not to file any registration
statement with respect to, and each of its executive officers, directors and
certain stockholders of the Company has agreed not to make any demand for, or
exercise any right with respect to, the registration of any shares of Common
Stock or any securities convertible into or exercisable or exchangeable into
Common Stock, other than registration statements on Form S-8 covering
outstanding options and securities issuable under the 1997 Plan, without DLJ's
prior written consent.
    
 
TRANSFER AGENT AND REGISTRATION
 
     The transfer agent and registrar for the Common Stock is U.S. Stock
Transfer Corporation.
 
                                       56
<PAGE>   58
 
                        SHARES ELIGIBLE FOR FUTURE SALE
 
     Upon completion of the Offering, the Company will have 10,933,547 shares of
Common Stock outstanding. Of these shares, the 4,700,000 shares sold in the
Offering (plus any additional shares sold upon the Underwriters' exercise of
their over-allotment option) will be freely transferable immediately following
the Offering without restriction under the Securities Act. Of the remaining
6,233,547 shares of Common Stock, 4,800,000 will become transferable 90 days
following the date of this Prospectus subject to compliance with the applicable
provisions of Rule 144, assuming the lock-up discussed below is not applicable.
 
   
     Each of the Company, its executive officers and directors and certain
stockholders of the Company who in the aggregate beneficially own approximately
99% of the total number of outstanding shares of Common Stock not sold in the
Offering, has agreed (except, in the case of the Company, for the grant of
options or issuance of stock under the 1997 Plan or upon conversion of the
Preferred Stock) not to (i) offer, pledge, sell, contract to sell, sell any
option or contract to purchase, purchase any option or contract to sell, grant
any option, right or warrant to purchase or otherwise transfer or dispose of,
directly or indirectly, any shares of Common Stock or any securities convertible
into or exercisable or exchangeable for Common Stock or (ii) enter into any swap
or other arrangement that transfers all or a portion of the economic
consequences associated with the ownership of any Common Stock (regardless of
whether any of the transactions described in clause (i) or (ii) is to be settled
by the delivery of Common Stock, or such other securities, in cash or otherwise)
(the "Lock-Up") for a period of 180 days (the "Lock-up Period") after the date
of this Prospectus without the prior written consent of DLJ.
    
 
     In general, under Rule 144 as currently in effect, a person (or persons
whose shares are aggregated) who has beneficially owned shares for at least one
year is entitled to sell within any three-month period commencing 90 days after
the date of this Prospectus a number of shares that does not exceed the greater
of (i) 1% of the then outstanding shares of the Common Stock (approximately
109,335 shares immediately after the Offering) or (ii) the average weekly
trading volume during the four calendar weeks preceding such sale, subject to
the filing of a Form 144 with respect to such sale (the "Volume Limitations"). A
person (or persons whose shares are aggregated) who is not deemed to have been
an affiliate of the Company at any time during the 90 days immediately preceding
the sale who has beneficially owned his or her shares for at least two years is
entitled to sell such shares pursuant to Rule 144(k) without regard to the
limitations described above. Persons deemed to be affiliates of the Company must
always sell pursuant to the volume limitations under Rule 144, even after the
applicable holding periods have been satisfied.
 
     The Company is unable to estimate the number of shares that will be sold
under Rule 144, since this will depend on the market price for the Common Stock
of the Company, the personal circumstances of the sellers and other factors.
Prior to the Offering, there has been no public market for the Common Stock, and
there can be no assurance that a significant public market for the Common Stock
will develop or be sustained after the Offering. Any future sale of substantial
amounts of Common Stock in the open market may adversely affect the market price
of the Common Stock offered hereby.
 
     Pursuant to the Registration Rights Agreements, holders of 6,233,547 shares
of Common Stock will be entitled to certain demand and piggy-back registration
rights with respect to such shares. See "Certain Transactions -- Acquisition"
and "Description of Capital Stock -- Registration Rights." During the Lock-up
Period, the Company has agreed not to file any registration statement with
respect to, and each of its executive officers, directors and certain
stockholders of the Company has agreed not to make any demand for, or exercise
any right with respect to, the registration of any shares of Common Stock or any
securities convertible into or exercisable or exchangeable into Common Stock,
other than a registration statement on Form S-8 covering shares issuable upon
exercise of stock options, without DLJ's prior written consent.
 
     The Company intends to file registration statements on Form S-8 under the
Securities Act to register shares of Common Stock issuable upon exercise of
options pursuant to outstanding options or grants under the 1997 Plan. However,
all holders of all such options have agreed to the Lock-Up.
 
                                       57
<PAGE>   59
 
                                  UNDERWRITING
 
     Subject to the terms and conditions of an Underwriting Agreement dated
            , 1997 (the "Underwriting Agreement"), the Underwriters named below,
who are represented by Donaldson, Lufkin & Jenrette Securities Corporation, UBS
Securities LLC and Furman Selz LLC (the "Representatives"), have severally
agreed to purchase from the Company the respective number of shares of Common
Stock set forth opposite their names below.
 
<TABLE>
<CAPTION>
                                                                            NUMBER OF
                                   UNDERWRITERS                              SHARES
        ------------------------------------------------------------------  ---------
        <S>                                                                 <C>
        Donaldson, Lufkin & Jenrette Securities Corporation...............
        UBS Securities LLC................................................
        Furman Selz LLC...................................................
 
                                                                            ---------
                  Total...................................................  4,700,000
                                                                            =========
</TABLE>
 
     The Underwriting Agreement provides that the obligations of the several
Underwriters to purchase and accept delivery of the shares of Common Stock
offered hereby are subject to certain conditions. The Underwriters are obligated
to purchase and accept delivery of all the shares of Common Stock offered hereby
(other than those shares covered by the over-allotment option described below)
if any are purchased.
 
     The Underwriters initially propose to offer the shares of Common Stock in
part directly to the public at the initial public offering price set forth on
the cover page of this Prospectus and in part to certain dealers (including the
Underwriters) at such price less a concession not in excess of $          per
share. The Underwriters may allow, and such dealers may re-allow, to certain
other dealers a concession not in excess of $          per share. After the
initial offering of the Common Stock, the public offering price and other
selling terms may be changed by the Representatives at any time without notice.
The Underwriters do not intend to confirm sales to any accounts over which they
exercise discretionary authority.
 
     The Company has granted to the Underwriters an option, exercisable within
30 days after the date of this Prospectus, to purchase, from time to time, in
whole or in part, up to an aggregate of 705,000 additional shares of Common
Stock at the initial public offering price less underwriting discounts and
commissions. The Underwriters may exercise such option solely to cover
over-allotments, if any, made in connection with the Offering. To the extent
that the Underwriters exercise such option, each Underwriter will become
obligated, subject to certain conditions, to purchase its pro rata portion of
such additional shares based on such Underwriter's percentage underwriting
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 to
payments that the Underwriters may be required to make in respect thereof.
 
     Each of the Company, its executive officers and directors and certain
stockholders of the Company has agreed (except, in the case of the Company, for
the grant of options or issuance of stock under the Company's 1997 Plan) not to
(i) offer, pledge, sell, contract to sell, sell any option or contract to
purchase, purchase any option or contract to sell, grant any option, right or
warrant to purchase or otherwise transfer or dispose of, directly or indirectly,
any shares of Common Stock or any securities convertible into or exercisable or
exchangeable for Common Stock or (ii) enter into any swap or other arrangement
that transfers all or a portion of the economic consequences associated with the
ownership of any Common Stock (regardless of whether any of the transactions
described in clause (i) or (ii) is to be settled by the delivery of Common
Stock, or such other securities, in cash or otherwise) for a period of 180 days
after the date of this Prospectus
 
                                       58
<PAGE>   60
 
without the prior written consent of DLJ. In addition, during such period, the
Company has also agreed not to file any registration statement with respect to,
other than a Registration Statement on Form S-8 covering securities issuable
under the 1997 Plan, and each of its executive officers, directors and certain
stockholders of the Company holding registration rights with respect to the
Company's Common Stock has agreed not to make any demand for, or exercise any
right with respect to, the registration of any shares of Common Stock or any
securities convertible into or exercisable or exchangeable for Common Stock
without DLJ's prior written consent.
 
     Prior to the Offering, there has been no established trading market for the
Common Stock. The initial public offering price for the shares of Common Stock
offered hereby will be determined by negotiation among the Company and the
Representatives. The factors to be considered in determining the initial public
offering price include the history of and the prospects for the industry in
which the Company competes, the past and present operations of the Company, the
historical results of operations of the Company, the prospects of future
earnings of the Company, the recent market price of securities of generally
comparable companies and the general condition of the securities markets at the
time of the Offering.
 
     Other than in the United States, no action has been taken by the Company or
the Underwriters that permits a public offering of the shares of Common Stock
offered hereby in any jurisdiction where action for that purpose is required.
The shares of Common Stock offered hereby may not be offered or sold, directly
or indirectly, nor may this Prospectus or any other offering material or
advertisements in connection with the offer and sale of any such shares of
Common Stock be distributed or published in any jurisdiction, except under
circumstances that will result in compliance with the applicable rules and
regulations of such jurisdiction. Persons who receive this Prospectus are
advised to inform themselves about and to observe any restrictions relating to
the Offering and the distribution of this Prospectus. This Prospectus does not
constitute an offer to sell or a solicitation of an offer to buy any shares of
Common Stock offered hereby in any jurisdiction in which such an offer or
solicitation is unlawful.
 
     In connection with the Offering, the Underwriters may engage in
transactions that stabilize, maintain or otherwise affect the price of the
Common Stock. Specifically, the Underwriters may over-allot the Offering,
creating a syndicate short position. The Underwriters may bid for and purchase
shares of Common Stock in the open market to cover such syndicate short position
or to stabilize the price of the Common Stock. In addition, the underwriting
syndicate may reclaim selling concessions from syndicate members if the
syndicate repurchases previously distributed Common Stock in syndicate covering
transactions, in stabilizing transactions or otherwise. These activities may
stabilize or maintain the market price of the Common Stock above independent
market levels. The Underwriters are not required to engage in these activities,
and may end any of these activities at any time.
 
     The Offering is being made pursuant to Rule 2720 of the Conduct Rules of
the NASD because certain associates of DLJ own in excess of 10% of the Common
Stock of the Company prior to the Offering and affiliates of DLJ will receive in
excess of 10% of the proceeds of the Offering as a result of the redemption of
the Class C Preferred Stock and the repayment of the 16% Series A Subordinated
Notes of the Company. Rule 2720 provides that, among other things, when an NASD
member participates in the underwriting of equity securities of a company in
which there exists a conflict of interest, the price at which such equity
securities are to be distributed to the public can be no higher than that
recommended by a "qualified independent underwriter" meeting certain standards.
UBS Securities LLC will assume the responsibilities of acting as the QIU in
connection with the Offering.
 
                                       59
<PAGE>   61
 
                                 LEGAL MATTERS
 
     The validity of the shares of Common Stock offered hereby will be passed
upon for the Company by Brobeck, Phleger & Harrison LLP, Newport Beach,
California and for the Underwriters by Sullivan & Cromwell, Los Angeles,
California.
 
                                    EXPERTS
 
     The consolidated financial statements as of December 31, 1995 and 1996 and
June 30, 1997, for the years ended December 31, 1994 and 1995, for the period
January 1, 1996 through November 15, 1996, the period November 16, 1996 through
December 31, 1996 and the six month period ended June 30, 1997 included in this
Prospectus have been so included in reliance on the reports of Price Waterhouse
LLP, independent accountants, given on the authority of said firm as experts in
auditing and accounting.
 
                             ADDITIONAL INFORMATION
 
     The Company has filed with the Securities and Exchange Commission (the
"Commission") a Registration Statement on Form S-1 under the Securities Act (the
"Registration Statement") with respect to the Common Stock offered hereby. This
Prospectus does not contain all of the information set forth in the Registration
Statement and the exhibits and schedules thereto. For further information with
respect to the Company and the Common Stock, reference is made to the
Registration Statement and the exhibits and schedules filed therewith.
Statements contained in this Prospectus as to the contents of any contract of
other document referred to are not necessarily complete, and in each instance
reference is made to the copy of such contract or other document filed as an
exhibit to the Registration Statement, each statement being qualified in all
respects by such reference. The Registration Statement, including the exhibits
and schedules thereto, may be inspected without charge at the principal office
of the Commission in Washington, D.C. and copies of all or any part of which may
be inspected and copied at the public reference facilities maintained by the
Commission at 450 Fifth Street, N.W., Room 1024, Washington, D.C. 20549 and at
the Commission's Regional Offices located at Citicorp Center, 500 West Madison
Street, Suite 1400, Chicago, Illinois 60661-2511 and 7 World Trade Center, Suite
1300, New York, New York 10048. Copies of such material may be obtained at
prescribed rates by mail from the Public Reference Section of the Commission at
450 Fifth Street, N.W., Washington, D.C. 20549. In addition, the Commission
maintains an Internet site at http://www.sec.gov that contains reports, proxy
and information statements and other information regarding registrants,
including the Company, that file electronically with the Commission.
 
     The Company intends to distribute to its stockholders annual reports
containing financial statements audited by its independent auditors and will
make available quarterly reports for the first three quarters of each year
following the end of each such quarter.
 
                                       60
<PAGE>   62
 
                   INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
                                                                                        PAGE
                                                                                        ----
<S>                                                                                     <C>
Report of Independent Accountants -- The Company......................................  F-2
Report of Independent Accountants -- The Predecessor..................................  F-3
Consolidated Balance Sheets as of December 31, 1995 and 1996 and June 30, 1997........  F-4
Consolidated Statements of Operations for the years ended December 31, 1994 and 1995,
  the period January 1, 1996 through November 15, 1996, the period November 16, 1996
  through December 31, 1996, the six months ended June 30, 1996 (unaudited) and the
  six months ended June 30, 1997......................................................  F-5
Consolidated Statements of Stockholders' Equity (Deficit)/Predecessor Equity for the
  years ended December 31, 1994 and 1995, the period January 1, 1996 through November
  15, 1996, the period November 16, 1996 through December 31, 1996 and the six months
  ended June 30, 1997.................................................................  F-6
Consolidated Statements of Cash Flows for the years ended December 31, 1994 and 1995,
  the period January 1, 1996 through November 15, 1996, the period November 16, 1996
  through December 31, 1996, the six months ended June 30, 1996 (unaudited) and the
  six months ended June 30, 1997......................................................  F-7
Notes to Consolidated Financial Statements............................................  F-8
</TABLE>
 
                                       F-1
<PAGE>   63
 
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Board of Directors and
Stockholders of Steri-Oss, Inc.
 
     In our opinion, the accompanying consolidated balance sheet and the related
consolidated statements of operations, stockholders' equity (deficit) and of
cash flows present fairly, in all material respects, the financial position of
Steri-Oss, Inc. (the "Company") and its subsidiaries at December 31, 1996 and
June 30, 1997 and the results of their operations and their cash flows for the
period from November 16, 1996 through December 31, 1996 and the six month period
ended June 30, 1997 in conformity with generally accepted accounting principles.
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 of these statements in accordance with
generally accepted auditing standards which 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,
assessing the accounting principles used and significant estimates made by
management, and evaluating the overall financial statement presentation. We
believe that our audits provide a reasonable basis for the opinion expressed
above.
 
     As discussed in Note 1 to the consolidated financial statements, effective
November 16, 1996 the Company acquired certain assets and assumed certain
liabilities of the Predecessor in a transaction accounted for as a purchase. As
a result of the acquisition, the consolidated financial information for the
period after the acquisition is presented on a different cost basis than that
for the periods before the acquisition and is, therefore, not comparable.
 
PRICE WATERHOUSE LLP
Costa Mesa, California
October 3, 1997
 
                                       F-2
<PAGE>   64
 
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Board of Directors and
Stockholders of Steri-Oss, Inc.
 
     In our opinion, the accompanying balance sheet and the related statements
of operations, Predecessor equity and of cash flows present fairly, in all
material respects, the financial position of Steri-Oss, a wholly owned
subsidiary of Bausch and Lomb Incorporated, as described in Note 1 (the
"Predecessor") at December 31, 1995, and the results of its operations and its
cash flows for the years ended December 31, 1994 and 1995 and for the period
from January 1, 1996 through November 15, 1996 in conformity with generally
accepted accounting principles. These financial statements are the
responsibility of the Predecessor's management; our responsibility is to express
an opinion on these financial statements based on our audits. We conducted our
audits of these statements in accordance with generally accepted auditing
standards which 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, assessing the
accounting principles used and significant estimates made by management, and
evaluating the overall financial statement presentation. We believe that our
audits provide a reasonable basis for the opinion expressed above.
 
     As discussed in Note 1 to the consolidated financial statements, effective
November 16, 1996 the Company acquired certain assets and assumed certain
liabilities of the Predecessor in a transaction accounted for as a purchase. As
a result of the acquisition, the consolidated financial information for the
period after the acquisition is presented on a different cost basis than that
for the periods before the acquisition and is, therefore, not comparable.
 
PRICE WATERHOUSE LLP
Costa Mesa, California
October 3, 1997
 
                                       F-3
<PAGE>   65
 
                                STERI-OSS, INC.
 
                          CONSOLIDATED BALANCE SHEETS
          (ALL DOLLAR AMOUNTS IN THOUSANDS, EXCEPT SHARE RELATED DATA)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                 PREDECESSOR                     COMPANY
                                                 ------------   ------------------------------------------
                                                 DECEMBER 31,   DECEMBER 31,    JUNE 30,       PRO FORMA
                                                     1995           1996          1997       JUNE 30, 1997
                                                 ------------   ------------   -----------   -------------
                                                                                              (UNAUDITED)
                                                                                               (NOTE 2)
<S>                                              <C>            <C>            <C>           <C>
Current assets
  Cash and cash equivalents....................    $    120       $    220       $    61        $    61
  Accounts receivable, net of allowance for
     doubtful accounts of $79, $0 and $237,
     respectively..............................       3,649          5,114         7,083          7,083
  Inventories (Note 4).........................       3,749          4,426         6,062          6,062
  Prepaid expenses and other current assets....         248            314           305            305
                                                   --------       --------       -------        -------
     Total current assets......................       7,766         10,074        13,511         13,511
Fixed assets, net (Note 5).....................       2,857          4,674         5,128          5,128
Goodwill, net of accumulated amortization of
  $1,820, $183 and $954, respectively..........      24,646         58,971        59,352         59,352
Other assets (Notes 6 and 7)...................         379          5,908         5,415          5,415
                                                   --------       --------       -------        -------
                                                   $ 35,648       $ 79,627       $83,406        $83,406
                                                   ========       ========       =======        =======
                    LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)/PREDECESSOR EQUITY
Current liabilities
  Current portion of long-term debt (Note 6)...    $              $  3,020       $ 3,269        $ 3,269
  Accounts payable.............................         506            712         2,091          2,091
  Accrued liabilities..........................       2,511          2,890         3,114          3,114
  Customer advances............................          43          1,095           488            488
                                                   --------       --------       -------        -------
     Total current liabilities.................       3,060          7,717         8,962          8,962
Long-term debt (Note 6)........................                     36,396        39,776         39,776
Mandatorily redeemable preferred stock
  classified as debt (Notes 7 and 14)..........                     34,226        35,814         15,814
                                                   --------       --------       -------        -------
Total liabilities..............................       3,060         78,339        84,552         64,552
                                                   --------       --------       -------        -------
Commitments and contingencies (Note 8)
Stockholders' equity (deficit)/predecessor
  equity (Notes 1, 2, 9 and 14)
  Common stock $0.0001 par value, 35,000,000
     shares authorized, 50,000 shares issued
     and outstanding at December 31, 1996 and
     June 30, 1997, respectively, and 1,483,547
     shares issued and outstanding on a pro
     forma basis at June 30, 1997..............
  Additional paid-in capital...................                      1,901         2,446         23,951
  Accumulated deficit..........................                       (613)       (3,592)        (5,097)
  Predecessor equity...........................      32,588
                                                   --------       --------       -------        -------
     Total stockholders' equity
       (deficit)/predecessor equity............      32,588          1,288        (1,146)        18,854
                                                   --------       --------       -------        -------
                                                   $ 35,648       $ 79,627       $83,406        $83,406
                                                   ========       ========       =======        =======
</TABLE>
 
          See accompanying Notes to Consolidated Financial Statements.
 
                                       F-4
<PAGE>   66
 
                                STERI-OSS, INC.
 
                     CONSOLIDATED STATEMENTS OF OPERATIONS
          (ALL DOLLAR AMOUNTS IN THOUSANDS, EXCEPT SHARE RELATED DATA)
 
<TABLE>
<CAPTION>
                                                    PREDECESSOR
                                          --------------------------------     COMPANY      PREDECESSOR   COMPANY
                                                                             ------------   ----------   ----------
                                             YEAR ENDED        JANUARY 1,    NOVEMBER 16,   SIX MONTHS   SIX MONTHS
                                            DECEMBER 31,        THROUGH        THROUGH        ENDED        ENDED
                                          -----------------   NOVEMBER 15,   DECEMBER 31,    JUNE 30,     JUNE 30,
                                           1994      1995         1996           1996          1996         1997
                                          -------   -------   ------------   ------------   ----------   ----------
                                                                                            (UNAUDITED)
<S>                                       <C>       <C>       <C>            <C>            <C>          <C>
Net sales...............................  $22,168   $27,361     $ 28,108      $    4,089     $ 15,744    $   19,334
Cost of sales...........................    6,666     7,865        7,430           1,356        4,226         5,148
                                          -------   -------     --------      ----------     --------    ----------
  Gross profit..........................   15,502    19,496       20,678           2,733       11,518        14,186
Selling, general and administrative
  expense...............................   11,393    14,241       14,791           1,929        8,224        11,511
Research and development expense........    1,781     2,225        2,116             352        1,255         1,322
                                          -------   -------     --------      ----------     --------    ----------
Income from operations..................    2,328     3,030        3,771             452        2,039         1,353
Interest expense........................                                           1,065                      4,332
                                          -------   -------     --------      ----------     --------    ----------
  Income (loss) before income taxes.....    2,328     3,030        3,771            (613)       2,039        (2,979)
Income taxes............................    1,253     1,572        1,852                        1,003
                                          -------   -------     --------      ----------     --------    ----------
  Net income (loss).....................  $ 1,075   $ 1,458     $  1,919      $     (613)    $  1,036    $   (2,979)
                                          =======   =======     ========      ==========     ========    ==========
Unaudited per share information (Notes 2
  and 14)
  Pro forma net loss per share..........                                      $    (0.05)                $    (0.28)
                                                                              ==========                 ==========
  Weighted average shares outstanding...                                       6,938,535                  6,938,535
                                                                              ==========                 ==========
  Supplemental net income per share.....                                      $     0.02                 $     0.07
                                                                              ==========                 ==========
  Weighted average shares outstanding...                                      11,638,535                 11,638,535
                                                                              ==========                 ==========
</TABLE>
 
          See accompanying Notes to Consolidated Financial Statements.
 
                                       F-5
<PAGE>   67
 
                                STERI-OSS, INC.
 
  CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT)/PREDECESSOR EQUITY
          (ALL DOLLAR AMOUNTS IN THOUSANDS, EXCEPT SHARE RELATED DATA)
 
<TABLE>
<CAPTION>
                                                      COMMON
                                                       STOCK        ADDITIONAL
                                                  ---------------   PAID-IN   ACCUMULATED    PREDECESSOR
                                                  SHARES   AMOUNT   CAPITAL     DEFICIT       EQUITY     TOTAL
                                                  ------   ------   ------   -------------   --------   --------
<S>                                               <C>      <C>      <C>      <C>             <C>        <C>
Balances at January 1, 1994.....................           $        $           $            $ 27,220   $ 27,220
  Net income....................................                                                1,075      1,075
  Net transfer from Bausch & Lomb...............                                                2,403      2,403
                                                  ------   ------   ------      -------      --------   --------
Balances at December 31, 1994...................                                               30,698     30,698
  Net income....................................                                                1,458      1,458
  Net transfer from Bausch & Lomb...............                                                  432        432
                                                  ------   ------   ------      -------      --------   --------
Balances at December 31, 1995...................                                               32,588     32,588
  Net income....................................                                                1,919      1,919
  Net transfer to Bausch & Lomb.................                                                 (634)      (634)
                                                  ------   ------   ------      -------      --------   --------
Balances at November 15, 1996...................                                               33,873     33,873
  Change in ownership in connection with the
     formation of the Company...................                                              (33,873)   (33,873)
  Issuance of stock in connection with the
     formation of the Company...................  50,000                 1                                     1
  Issuance of warrants to purchase common
     stock......................................                     1,900                                 1,900
  Net loss......................................                                   (613)                    (613)
                                                  ------   ------   ------      -------      --------   --------
Balances at December 31, 1996...................  50,000             1,901         (613)                   1,288
  Issuance of options to purchase common
     stock......................................                       545                                   545
  Net loss......................................                                 (2,979)                  (2,979)
                                                  ------   ------   ------      -------      --------   --------
Balances at June 30, 1997.......................  50,000   $        $2,446      $(3,592)     $          $ (1,146)
                                                  ======   ======   ======      =======      ========   ========
</TABLE>
 
          See accompanying Notes to Consolidated Financial Statements.
 
                                       F-6
<PAGE>   68
 
                                STERI-OSS, INC.
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
          (ALL DOLLAR AMOUNTS IN THOUSANDS, EXCEPT SHARE RELATED DATA)
 
<TABLE>
<CAPTION>
                                                           PREDECESSOR
                                                 --------------------------------     COMPANY      PREDECESSOR     COMPANY
                                                                                    ------------   -----------   -----------
                                                    YEAR ENDED        JANUARY 1,    NOVEMBER 16,   SIX MONTHS    SIX MONTHS
                                                   DECEMBER 31,        THROUGH        THROUGH         ENDED         ENDED
                                                 -----------------   NOVEMBER 15,   DECEMBER 31,    JUNE 30,      JUNE 30,
                                                  1994      1995         1996           1996          1996          1997
                                                 -------   -------   ------------   ------------   -----------   -----------
                                                                                                   (UNAUDITED)
<S>                                              <C>       <C>       <C>            <C>            <C>           <C>
Cash flows from operating activities
  Net income (loss)............................  $ 1,075   $ 1,458     $  1,919       $   (613)      $ 1,036       $(2,979)
  Adjustments to reconcile net income (loss) to
    net cash provided by (used in) operating
    activities
    Depreciation and amortization..............    1,231     1,536        1,624            343           857         1,444
    Compensation expense on issuance of stock
      options..................................                                                                        545
    Dividends and interest on mandatorily
      redeemable preferred stock and
      subordinated debt........................                                            542                       2,247
    Provision for income taxes of
      Predecessor..............................    1,253     1,572        1,852                        1,003
    Changes in operating assets and
      liabilities, net of acquisitions
      Accounts receivable......................     (178)   (1,202)        (879)          (585)       (1,085)       (1,398)
      Inventories..............................     (677)     (864)        (823)           351          (224)       (1,010)
      Prepaid expenses and other current
         assets................................     (444)     (200)        (157)           (26)         (165)           24
      Accounts payable.........................     (403)      114          974           (472)           40           785
      Accrued liabilities......................      263       856         (522)           936           376           172
      Customer advances........................     (440)       43        1,446           (394)          806          (607)
                                                 -------   -------     --------       --------       -------       -------
    Net cash provided by (used in) operating
      activities...............................    1,680     3,313        5,434             82         2,644          (777)
Cash flows from investing activities
  Payment for purchase of net assets from
    Bausch and Lomb............................                                        (58,744)
    Interpore..................................                                                                     (1,737)
    Purchases of fixed assets, net.............   (1,702)   (1,190)      (1,957)          (250)       (1,286)       (1,018)
                                                 -------   -------     --------       --------       -------       -------
    Net cash used in investing activities......   (1,702)   (1,190)      (1,957)       (58,994)       (1,286)       (2,755)
Cash flows from financing activities
  Proceeds from issuance of mandatorily
    redeemable preferred stock.................                                         22,448
  Payment of note payable to Bausch & Lomb.....                                                                       (714)
  Proceeds from issuance of long-term debt.....                                         38,823                       4,087
  Payment of issue costs.......................                                         (2,140)
  Advances from (to) Bausch & Lomb.............      177    (2,158)      (3,597)                        (805)
  Proceeds from issuance of common stock.......                                              1
                                                 -------   -------     --------       --------       -------       -------
    Net cash provided by (used in) financing
      activities...............................      177    (2,158)      (3,597)        59,132          (805)        3,373
                                                 -------   -------     --------       --------       -------       -------
Net increase (decrease) in cash and cash
  equivalents..................................      155       (35)        (120)           220           553          (159)
Cash and cash equivalents, beginning of
  period.......................................                155          120                          120           220
                                                 -------   -------     --------       --------       -------       -------
Cash and cash equivalents, end of period.......  $   155   $   120     $              $    220       $   673       $    61
                                                 =======   =======     ========       ========       =======       =======
Supplemental disclosure of cash flow
  information
  Cash paid for interest.......................  $    --   $    --     $     --       $    122       $    --       $ 1,961
                                                 =======   =======     ========       ========       =======       =======
</TABLE>
 
Supplemental schedule of noncash investing and financing activities:
 
As described in Notes 3 and 7, the Company issued mandatorily redeemable
preferred stock totaling $10,000 directly to Bausch & Lomb as partial
consideration for the purchase of net assets of the Predecessor.
 
          See accompanying Notes to Consolidated Financial Statements.
 
                                       F-7
<PAGE>   69
 
                                STERI-OSS, INC.
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
          (ALL DOLLAR AMOUNTS IN THOUSANDS, EXCEPT SHARE RELATED DATA)
 
1. ORGANIZATION AND BUSINESS
 
     S-O Operating Corp. was incorporated in Delaware on October 17, 1996. S-O
Operating Corp. is a wholly owned subsidiary of S-O Acquisition Corp., which was
incorporated in Delaware on July 11, 1996. On August 22, 1997, S-O Acquisition
Corp. changed its name to Steri-Oss, Inc. (the "Company").
 
     Effective November 16, 1996, the Company acquired the assets and
liabilities of the Steri-Oss subsidiary (the "Predecessor") of Bausch & Lomb
Incorporated ("Bausch & Lomb"). For financial statement purposes the acquisition
was accounted for as a purchase and, accordingly, the results of the Predecessor
are included in the consolidated financial statements of the Company from the
date of acquisition.
 
     Effective May 1, 1997, the Company acquired certain assets and liabilities
relating to the dental operations of Interpore Dental, Inc. ("Interpore"). For
financial statement purposes, the acquisition was accounted for using the
purchase method of accounting and, accordingly, the purchase price has been
allocated to the assets purchased and the liabilities assumed based upon the
fair values at the date of acquisition. This acquisition was not material to the
results of operations, financial position or customer base of the Company.
 
     The Company manufactures dental implants and related products. The
Company's business activity is largely concentrated directly with dental implant
specialists in North America and with independent distributors in Europe and the
Middle East, Asia, and Central and South America.
 
2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
  Principles of Consolidation
 
     The consolidated financial statements include the accounts of the Company
and its wholly owned subsidiaries. All significant intercompany transactions and
balances have been eliminated.
 
  Revenue Recognition
 
     Revenues from the sale of dental implants and related products are
recognized when products are shipped.
 
  Cash and Cash Equivalents
 
     Cash and cash equivalents are comprised of cash on hand and short-term,
liquid investments with original maturities of three months or less.
 
  Disclosures About Fair Value of Financial Instruments
 
     The carrying amounts of cash, accounts receivable and accounts payable
approximate fair value because of the short maturity of these instruments. The
carrying amounts of the Company's senior and subordinated notes payable and
mandatorily redeemable preferred stock approximate fair value based upon the
current rates offered to the Company for obligations of the same remaining
maturities.
 
  Inventories
 
     Inventories are stated at the lower of cost or net realizable value. Cost
is determined on the first-in, first-out method.
 
                                       F-8
<PAGE>   70
 
                                STERI-OSS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
          (ALL DOLLAR AMOUNTS IN THOUSANDS, EXCEPT SHARE RELATED DATA)
 
  Fixed Assets
 
     Additions and expenditures which substantially increase the useful lives of
assets are capitalized at cost, while maintenance and repair costs are expensed
as incurred. Depreciation is provided on a straight-line basis over the
estimated useful lives of the assets, which range from three to eight years.
 
  Goodwill
 
     Goodwill is the excess of the cost of net assets acquired over their fair
value and is amortized on a straight-line basis over the expected periods to be
benefited. It is the Company's policy to periodically evaluate the carrying
value of its operating assets, including goodwill, and to recognize impairments
when the estimated future undiscounted net operating cash flows from the use of
assets are less than their carrying value.
 
  Debt Issuance Costs and Debt Discounts
 
     Debt issuance costs are recorded as deferred charges and are amortized over
the term of the related debt by a charge to interest expense. Debt discounts are
reflected as a deduction in the carrying value of the related note and amortized
using the effective interest method.
 
  Research and Development
 
     Research and development costs incurred by the Company are charged to
operations as incurred.
 
  Income Taxes
 
     Income taxes are provided based on the liability method of accounting
pursuant to Statement of Financial Accounting Standards No. 109 ("SFAS No.
109"), "Accounting for Income Taxes." SFAS No. 109 is an asset and liability
approach that requires the recognition of deferred tax assets and liabilities
for the expected future tax consequences of events that have been recognized in
the Company's financial statements or tax returns. In estimating future tax
consequences, SFAS No. 109 generally considers all expected future events
including enactment of changes in tax laws or rates. A valuation allowance is
provided for deferred tax assets when it is more likely than not that such
assets will not be realized through future operations.
 
     Income taxes during the years ended December 31, 1994, 1995 and for the
period from January 1, 1996 through November 15, 1996, were provided on a
separate return basis. The Predecessor was included in the consolidated income
tax returns of Bausch & Lomb.
 
  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 amounts reported in the consolidated financial
statements and related notes to financial statements. Changes in such estimates
may affect amounts reported in future periods.
 
  Unaudited Per Share Information
 
     Unaudited pro forma net loss per share is based on the weighted average
common shares outstanding after retroactively reflecting the 50 for one stock
split (Note 14). In accordance with Staff Accounting Bulletin ("SAB") No. 83
issued by the Securities and Exchange Commission (the "Commission"), all common
stock and common stock equivalents issued within one year of the initial filing
of a registration statement at per share prices below the initial public
offering (the "Offering") price per share are included in the number of shares
outstanding at the beginning of the respective period, using the treasury stock
method of
 
                                       F-9
<PAGE>   71
 
                                STERI-OSS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
          (ALL DOLLAR AMOUNTS IN THOUSANDS, EXCEPT SHARE RELATED DATA)
 
accounting using an assumed Offering price per share of $15, even though their
effects may be antidilutive. The Company has also included the effects of the
conversion of Class A 8.8% mandatorily redeemable preferred stock totaling
$17,471 and Class C 8.0% mandatorily redeemable preferred stock totaling $2,529,
into 1,433,547 shares of common stock as if the conversion was consummated at
the date of issuance. The assumed conversion of the preferred stock reduced the
Company's net loss by $268 and $1,067 and the net loss per share by $0.06 and
$0.24 for the period from November 16, 1996 through December 31, 1996 and the
six months ended June 30, 1997, respectively. Management does not believe that
historical per share information is meaningful and accordingly, such information
is not presented.
 
     In February 1997, the Financial Accounting Standards Board issued Statement
of Financial Accounting Standards No. 128 ("SFAS No. 128"), "Earnings Per
Share." SFAS No. 128 simplifies the standards for computing Earnings Per Share
("EPS"), eliminating the presentation of primary EPS (currently required by
Accounting Principles Board Opinion No. 15, "Earnings Per Share") and requiring
dual presentation of basic and diluted EPS on the face of the income statement
for all public corporations with complex capital structures. SFAS No. 128 is
effective for financial statements for both interim and annual periods ending
after December 15, 1997. Early adoption is not permitted, although pro forma
disclosure is optional. SFAS No. 128 is not expected to have a significant
impact on per share data.
 
  Unaudited Supplemental Data
 
     Unaudited supplemental net income per share adjusts the pro forma net
income per share to give effect to the repayment of approximately $59,900 of
mandatorily redeemable preferred stock and long-term debt using a portion of the
proceeds from the Offering. The assumed repayment of mandatorily redeemable
preferred stock and long-term debt increased the Company's pro forma net income
by $616 and $2,509 for the periods ended December 31, 1996 and June 30, 1997,
respectively.
 
  Unaudited Pro Forma Balance Sheet Data
 
     Unaudited pro forma balance sheet data adjusts the historical June 30, 1997
balance sheet to reflect the conversion of $20,000 of Class A and Class C
mandatorily redeemable preferred stock into 1,433,547 shares of common stock.
 
  Accounting for Stock-Based Compensation
 
     The Company accounts for employee stock-based compensation in accordance
with Accounting Principles Board Opinion No. 25 and related interpretations. The
disclosures required by Statement of Financial Accounting Standards No. 123
("SFAS No. 123"), "Accounting for Stock-Based Compensation," have been included
in Note 9.
 
  Fiscal Periods
 
     The Company uses a fifty-two/fifty-three week fiscal year ending on the
last Saturday in December. Fiscal year 1994 was a fifty-three week year and
fiscal years 1995 and 1996 were fifty-two week years. As a result, fiscal
periods may not end on the same day as the end of the respective calendar
period. Fiscal years 1994, 1995 and 1996 ended on December 31, December 30 and
December 28, respectively. The first six months of 1996 and 1997 ended on June
29 and June 28, respectively. For convenience of presentation, the financial
statements are shown as ending on December 31, and June 30.
 
  Reclassifications
 
     Certain prior period amounts have been reclassified to conform with current
period presentations.
 
                                      F-10
<PAGE>   72
 
                                STERI-OSS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
          (ALL DOLLAR AMOUNTS IN THOUSANDS, EXCEPT SHARE RELATED DATA)
 
  Interim Financial Information
 
     The accompanying interim statements of operations and cash flows for the
six months ended June 30, 1996 are unaudited but include all adjustments,
consisting only of normal recurring adjustments, which management considers
necessary for a fair presentation of results of operations and of cash flows.
The results of operations and cash flows for the six months ended June 30, 1997
are not necessarily indicative of the results of operations and cash flows for
the full year.
 
3. ACQUISITIONS
 
  Steri-Oss
 
     The aggregate purchase price of $69,000 in connection with the Company's
acquisition of the Predecessor on November 16, 1996 (Note 1) was allocated to
acquired assets based upon their respective fair market values as follows:
 
<TABLE>
                <S>                                                  <C>
                Current assets.....................................  $ 9,800
                Fixed assets.......................................    4,500
                Goodwill...........................................   59,200
                Current liabilities................................   (4,500)
                                                                     -------
                                                                     $69,000
                                                                     =======
</TABLE>
 
     Goodwill is being amortized over 40 years. Amortization for the period
November 16, 1996 to December 31, 1996 and the six month period ended June 30,
1997 amounted to $183 and $741, respectively. The acquisition was financed by
the issuance of mandatorily redeemable preferred stock, subordinated debt and
the Bank Facility (Note 7).
 
     Bausch & Lomb purchased the Predecessor in 1993 for an initial price of
approximately $26,000 subject to an earn-out provision based on profitability.
During the years ended December 31, 1994 and 1995, and for the period from
January 1, 1996 through November 15, 1996, earn-outs of $973, $1,018 and $1,111,
respectively, were incurred and capitalized to goodwill. The aggregate purchase
price paid by Bausch & Lomb, including direct acquisition costs, amounted to
approximately $31,000. Bausch & Lomb allocated the excess cost over fair value
of the net assets acquired to goodwill, which prior to November 15, 1996 was
being amortized over 40 years. Amortization expense for the years ended December
31, 1994 and 1995, and for the period January 1, 1996 through November 15, 1996
amounted to $832, $856 and $798, respectively.
 
4. INVENTORIES
 
     Inventories are summarized as follows:
 
<TABLE>
<CAPTION>
                                                PREDECESSOR                COMPANY
                                                ------------     ----------------------------
                                                DECEMBER 31,     DECEMBER 31,      JUNE 30,
                                                    1995             1996            1997
                                                ------------     ------------     -----------
        <S>                                     <C>              <C>              <C>
        Raw materials.........................     $1,824           $2,036          $ 2,536
        Work-in process.......................        507              583              990
        Finished goods........................      1,418            1,807            2,536
                                                   ------           ------          -------
                                                   $3,749           $4,426          $ 6,062
                                                   ======           ======          =======
</TABLE>
 
                                      F-11
<PAGE>   73
 
                                STERI-OSS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
          (ALL DOLLAR AMOUNTS IN THOUSANDS, EXCEPT SHARE RELATED DATA)
 
5. FIXED ASSETS:
 
     Fixed assets consist of the following:
 
<TABLE>
<CAPTION>
                                                PREDECESSOR                COMPANY
                                                ------------     ----------------------------
                                                DECEMBER 31,     DECEMBER 31,      JUNE 30,
                                                    1995             1996            1997
                                                ------------     ------------     -----------
        <S>                                     <C>              <C>              <C>
        Leasehold improvements................     $  230           $  297          $   315
        Machinery and equipment...............      2,168            2,829            4,447
        Office furniture and fixtures.........      1,256            1,439              754
        Construction in progress..............         87              241              324
                                                   ------           ------          -------
                                                    3,741            4,806            5,840
        Less: accumulated depreciation........       (884)            (132)            (712)
                                                   ------           ------          -------
                                                   $2,857           $4,674          $ 5,128
                                                   ======           ======          =======
</TABLE>
 
     Depreciation expense for the years ended December 31, 1994 and 1995, the
period January 1 through November 15, 1996, the period November 16 through
December 31, 1996, the six months ended June 30, 1996 (unaudited) and six months
ended June 30, 1997 totaled $363, $595, $712, $132, $352 and $575, respectively.
 
 6. LONG-TERM DEBT
 
     Long-term debt consists of the following:
 
<TABLE>
<CAPTION>
                                                                                         COMPANY
                                                                               ---------------------------
                                                                               DECEMBER 31,     JUNE 30,
                                                                                   1996           1997
                                                                               ------------    -----------
<S>                                                                            <C>             <C>
Working Capital Loan which expires on November 15, 1999; variable interest
  rate based on a bank's referenced base rate (the "Reference Rate") plus
  1.5% per annum (9.75% at June 30, 1997) or LIBOR plus 2.75% per annum.
  Maximum borrowing under this loan is $5,000................................    $  1,323        $ 3,404
Revolving Term Loan due in quarterly installments ranging from $750 to $1,000
  through November 15, 2001; interest rate based on the Reference Rate plus
  1.5% per annum (9.75% at June 30, 1997) or LIBOR plus 3.0% per annum.
  Maximum borrowing under this loan is $17,500 and $18,250, respectively.....      17,500         18,250
Term Loan due in quarterly installments of $19 through January 1, 2001, at
  which time such payments increase in the range of $550 to $1,700 through
  November 15, 2002; variable interest rate based on the Reference Rate plus
  2.0% per annum (10.25% at June 30, 1997) or LIBOR plus 3.75% per annum; net
  of unamortized discount of $39 and $35 at December 31, 1996 and June 30,
  1997, respectively.........................................................       7,461          7,447
Capital Expenditure Loan which expires on November 15, 2002; variable
  interest rate based on the Reference Rate plus 1.5% per annum (9.75% at
  June 30, 1997) or LIBOR plus 3.0% per annum. Maximum borrowing under this
  loan is $3,000.............................................................                      1,275
16% Series A Senior Subordinated Notes due in one lump sum on May 15, 2003,
  with an acceleration clause of 25% of outstanding principal upon an initial
  public offering, with an effective interest rate of 16.99%; net of
  unamortized discount of $103 and $95 at December 31, 1996 and June 30,
  1997, respectively.........................................................       9,947         10,168
14% Series B Senior Subordinated Notes due in one lump sum on May 15, 2003,
  with an acceleration clause of 25% of outstanding principal upon an initial
  public offering, with an effective interest rate of 14.75%; net of
  unamortized discount of $35 and $33 at December 31, 1996 and June 30, 1997,
  respectively...............................................................       2,471          2,501
10.25% acquisition note payable to Bausch & Lomb, repaid February 14, 1997...         714
                                                                                 --------        -------
    Total long-term debt.....................................................      39,416         43,045
    Less current portion.....................................................      (3,020)        (3,269)
                                                                                 --------        -------
    Long-term debt...........................................................    $ 36,396        $39,776
                                                                                 ========        =======
</TABLE>
 
                                      F-12
<PAGE>   74
 
                                STERI-OSS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
          (ALL DOLLAR AMOUNTS IN THOUSANDS, EXCEPT SHARE RELATED DATA)
 
     The Working Capital Loan, Revolving Term Loan, Term Loan and Capital
Expenditure Loan (collectively the "Bank Facility") are senior to all
indebtedness of the Company and are secured by substantially all of the
Company's assets. The Company is obligated to pay a commitment fee of 0.5% per
annum of the unused portion of the Working Capital Loan, Revolving Term Loan and
Capital Expenditure Loan. Under the provisions of the Company's credit
agreements the Company is required to adhere to certain restrictive covenants
including the maintenance of certain financial ratios. Credit agreements also
prohibit, among other things, the payment of dividends without the consent of
the Company's lenders.
 
     The Bank Facility loans and Senior Subordinated Notes were issued with
detachable warrants for the purchase of common stock. The fair value of these
warrants has been recorded as additional paid-in capital of the Company with a
corresponding reduction in the carrying value of the notes. Such reductions have
been treated as debt discount. Debt issue costs aggregating $2,259 and $2,052 at
December 31, 1996 and June 30, 1997, respectively, are included in other assets
in the consolidated balance sheets. Interest accrued on the Bank Facility and
Senior Subordinated Notes aggregated $430 and $503 at December 31, 1996 and June
30, 1997, respectively.
 
     Scheduled future annual maturities of long-term debt as of June 30, 1997
are as follows:
 
<TABLE>
<CAPTION>
YEAR ENDING
DECEMBER 31,
- ------------
<S>            <C>                                    <C>
1997................................................  $ 1,667
   1998.............................................    3,739
   1999.............................................    7,359
   2000.............................................    4,308
   2001.............................................    6,513
   Thereafter.......................................   19,459
                                                      -------
                                                      $43,045
                                                      =======
</TABLE>
 
 7. MANDATORILY REDEEMABLE PREFERRED STOCK
 
     In conjunction with the acquisition of net assets from Bausch & Lomb as
described in Notes 1 and 3, the Company issued cumulative mandatorily redeemable
preferred stock (classified and accounted for as debt) in the aggregate
liquidation amount of $35,200. This consisted of 22,000 shares of Class A,
10,000 shares of Class B and 3,185 shares of Class C mandatorily redeemable
preferred stock ($0.01 par value), with face amounts of $22,000, $10,000 and
$3,185 and dividend rates of 8.8%, 8.0% and 8.0%, respectively. Class B
preferred stock was issued to Bausch & Lomb in the amount of $10,000 as partial
consideration for the purchase price. The Class B preferred stock is
convertible, at the option of the holder, into common stock at the time the
Company first sells shares in an initial public offering. All classes of such
preferred stock are mandatorily redeemable on September 15, 2003 and have voting
rights as a separate class. The Company records accrued dividends on this
redeemable preferred stock to increase the carrying value of the preferred stock
with a corresponding charge to interest expense. At December 31, 1996 and June
30, 1997 accrued interest on mandatorily redeemable preferred stock included in
the carrying value of such preferred stock amounted to $374 and $1,869,
respectively.
 
     The Class A and Class C mandatorily redeemable preferred stock was issued
with detachable warrants for the purchase of the Company's common stock. The
fair value of these warrants has been recorded as additional paid-in capital of
the Company, with a corresponding reduction to the carrying value of such
preferred stock. Such reduction has been treated as a discount that is being
accreted to increase the carrying value to the redemption value of the preferred
stock with a corresponding charge to interest expense. The
 
                                      F-13
<PAGE>   75
 
                                STERI-OSS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
          (ALL DOLLAR AMOUNTS IN THOUSANDS, EXCEPT SHARE RELATED DATA)
 
Company also incurred costs of approximately $2,900 relating to the issuance of
the preferred stock. These costs have been capitalized as debt issue costs and
included in other assets in the accompanying consolidated balance sheets at
December 31, 1996 and June 30, 1997 and included as interest expense in the
related consolidated statements of operations. The unamortized debt issue costs
related to mandatorily redeemable preferred stock at December 31, 1996 and June
30, 1997 aggregated $2,886 and $2,696, respectively.
 
8. COMMITMENTS AND CONTINGENCIES
 
  Commitments
 
     The principal operating leases of the Company are for its manufacturing
facility and certain equipment. The facility lease provides that the Company
shall pay for utilities, insurance, taxes and maintenance. The manufacturing
facility lease currently expires on December 31, 1997. Management intends to
renew the lease prior to the termination of the lease. The remaining leases
expire through the year 1999, with renewal options available.
 
     Future annual minimum rental payments required under noncancelable
operating leases that have initial or remaining lease terms in excess of one
year as of June 30, 1997 are as follows:
 
<TABLE>
<CAPTION>
YEAR ENDING
DECEMBER 31,
- ------------
<S>            <C>                                     <C>
1997.................................................  $  129
   1998..............................................       7
   1999..............................................       7
                                                         ----
                                                       $  143
                                                         ====
</TABLE>
 
     The Company has also entered into several agreements to provide financing
for research and development and promotional studies related to the Company's
products. Future annual minimum payments under these agreements as of June 30,
1997 are as follows:
 
<TABLE>
<CAPTION>
YEAR ENDING
DECEMBER 31,
- ------------
<S>            <C>                                     <C>
1997.................................................  $  239
   1998..............................................     425
   1999..............................................     487
   2000..............................................     327
   2001..............................................     162
   Thereafter........................................      13
                                                       ------
                                                       $1,653
                                                       ======
</TABLE>
 
  Legal Contingencies
 
     The Company is subject to various claims and actions which arise in the
ordinary course of business. Management is unaware of any claims or actions
which would have a material adverse effect upon the Company's financial
position, results of operations or cash flows. Bausch & Lomb has agreed to
indemnify the Company, subject to certain exceptions, against any claims and
losses from defects in the design, manufacture or production of any product sold
prior to the acquisition of the Predecessor in November 1996.
 
                                      F-14
<PAGE>   76
 
                                STERI-OSS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
          (ALL DOLLAR AMOUNTS IN THOUSANDS, EXCEPT SHARE RELATED DATA)
 
9. STOCKHOLDERS' EQUITY
 
  Stock Options
 
   
     On January 8, 1997, the Company issued options to purchase 242,061 shares
of common stock pursuant to Performance Stock Option Agreements at $0.40 per
share. These options vest over a period of six years, which can be accelerated
upon the attainment of certain performance criteria over three years, or vest
immediately upon the consummation of a public offering of the stock of the
Company. Compensation expense aggregating $31 has been charged to operations
during the six months ended June 30, 1997 for such options based on a grant date
fair value of $1.93 per share. These options expire in 2007.
    
 
   
     On January 8, 1997, the Company issued options to purchase 200,000 shares
of common stock to certain officers at $0.40 per share pursuant to Executive
Officer NonQualified Stock Option Agreements. Compensation expense aggregating
$306 has been charged to operations during the six months ended June 30, 1997
for such options based on a grant date fair value of $1.93 per share. These
options immediately vested on the date of grant, January 8, 1997. These options
expire in 2007.
    
 
   
     On January 8, 1997, the Company granted certain of its Board members
options to purchase 214,200 shares of common stock at $1.00 per share pursuant
to Director Stock Option Agreements. Compensation expense aggregating $199 has
been charged to operations during the six months ended June 30, 1997 for such
options based on a grant date fair value of $1.93 per share. These options
vested immediately on the date of grant.
    
 
   
     On May 16, 1997, the Company issued options to purchase 77,083 shares of
common stock pursuant to Performance Stock Option Agreements at $0.40 per share.
These options vest over a period of six years, which can be accelerated upon the
attainment of certain performance criteria over three years, or vest immediately
upon the consummation of a public offering of the stock of the Company.
Compensation expense aggregating $9 has been charged to operations during the
six months ended June 30, 1997 for such options based on a grant date fair value
of $5.69 per share.
    
 
   
     The Company accounts for these plans under Accounting Principles Board
Opinion No. 25. Compensation expense is calculated based upon the difference
between (i) the grant date fair value of the underlying common stock and (ii)
the exercise price of the options. Had compensation cost for these plans been
determined consistent with SFAS No. 123, using the Black-Scholes Option Pricing
Model with the following assumptions: 0% expected dividend yield; 6.81% risk
free interest rate; 10 year expected life of options, the Company's net loss and
earnings per share would have been reduced to the following pro forma amounts:
    
 
<TABLE>
<CAPTION>
                                                                            JUNE 30,
                                                                              1997
                                                                           -----------
        <S>                                                                <C>
        Net loss:
          As reported....................................................    $(2,979)
                                                                             =======
          Pro Forma......................................................    $(2,434)
                                                                             =======
        Pro forma net loss per share:
          As reported....................................................    $ (0.28)
                                                                             =======
          Pro Forma......................................................    $ (0.21)
                                                                             =======
        Supplemental net income per share:
          As reported....................................................    $  0.07
                                                                             =======
          Pro forma......................................................    $  0.10
                                                                             =======
</TABLE>
 
                                      F-15
<PAGE>   77
 
                                STERI-OSS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
          (ALL DOLLAR AMOUNTS IN THOUSANDS, EXCEPT SHARE RELATED DATA)
 
     A summary of activity of the Plan at June 30, 1997 and during the period
then ended is presented in the table below:
 
<TABLE>
<CAPTION>
                                                                         JUNE 30, 1997
                                                                  ---------------------------
                                                                                 WEIGHTED
                                                                  NUMBER          AVERAGE
                                                                    OF           EXERCISE
                                                                  SHARES      PRICE PER SHARE
                                                                  -------     ---------------
    <S>                                                           <C>         <C>
    Outstanding at beginning of period..........................                   $
    Granted.....................................................  733,344           0.58
                                                                  -------          -----
    Outstanding at end of period................................  733,344           0.58
                                                                  -------          -----
    Exercisable at end of period................................  414,200          $0.58
                                                                  -------          -----
</TABLE>
 
   
     The weighted average grant date fair value of options granted during the
six month period ended June 30, 1997 amounted to $2.33.
    
 
  Stock Warrants
 
   
     In connection with the issuance of long-term debt (Note 6) and mandatorily
redeemable preferred stock (Note 7), the Company issued warrants to purchase
4,750,000 shares of common stock at $0.0002. The Company recorded these warrants
at fair value on the date of issuance in the amount of $1,900.
    
 
10. INCOME TAXES
 
     The components of income taxes for the periods presented are as follows:
 
<TABLE>
<CAPTION>
                                             PREDECESSOR
                                  ----------------------------------               COMPANY
                                                                         ---------------------------
                                     YEAR ENDED          JANUARY 1,      NOVEMBER 16,     SIX MONTHS
                                    DECEMBER 31,          THROUGH          THROUGH          ENDED
                                  -----------------     NOVEMBER 15,     DECEMBER 31,      JUNE 30,
                                   1994       1995          1996             1996            1997
                                  ------     ------     ------------     ------------     ----------
    <S>                           <C>        <C>        <C>              <C>              <C>
    Current:
      Federal...................  $  599     $  670        $1,292
      State.....................     246        252           385
 
    Deferred:
      Federal...................     378        558           145            $(46)          $ (501)
      State.....................      30         92            30               6              (92)
                                  ------     ------        ------            ----           ------
                                   1,253      1,572         1,852             (40)            (593)
    Valuation allowance.........                                               40              593
                                  ------     ------        ------            ----           ------
                                  $1,253     $1,572        $1,852            $ --           $   --
                                  ======     ======        ======            ====           ======
</TABLE>
 
     The Company has recorded a full valuation allowance for net deferred tax
assets based on future reversal of temporary differences and the uncertainty of
future taxable income.
 
     Income taxes for the six months ended June 30, 1996 (unaudited) and 1997,
are based on the effective income tax rate for the respective year.
 
                                      F-16
<PAGE>   78
 
                                STERI-OSS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
          (ALL DOLLAR AMOUNTS IN THOUSANDS, EXCEPT SHARE RELATED DATA)
 
     The difference between the income taxes computed at the statutory Federal
rate of 34% and the amount in the consolidated statements of operations is
primarily attributable to the following:
 
   
<TABLE>
<CAPTION>
                                                        PREDECESSOR
                                                ----------------------------            COMPANY
                                                                               -------------------------
                                                 YEAR ENDED      JANUARY 1,    NOVEMBER 16,   SIX MONTHS
                                                DECEMBER 31,      THROUGH        THROUGH        ENDED
                                                -------------   NOVEMBER 15,   DECEMBER 31,    JUNE 30,
                                                1994     1995       1996           1996          1997
                                                ----     ----   ------------   ------------   ----------
<S>                                             <C>      <C>    <C>            <C>            <C>
Federal tax at statutory rate.................  34.0%    34.0%      34.0%          (34.0%)       (34.0%)
State taxes, net..............................   7.8      7.5        7.2             0.0           0.0
Amortization of intangibles...................  12.1      9.6        7.2             0.0           0.0
Preferred stock dividends.....................   0.0      0.0        0.0            28.4          17.1
Research and development credit...............  (1.5)    (0.6)      (0.2)            0.0          (1.7)
Increase in valuation allowance...............   0.0      0.0        0.0             6.6          16.8
Other, net....................................   1.4      1.4        0.9            (1.0)          1.8
                                                ----     ----       ----           -----         -----
Income taxes at the Company's effective
  rate........................................  53.8%    51.9%      49.1%            0.0%          0.0%
                                                ====     ====       ====           =====         =====
</TABLE>
    
 
     Deferred taxes reflect the impact of future tax consequences associated
with temporary differences between the amount of assets and liabilities recorded
for tax and financial accounting purposes. Temporary differences and
carryforwards which give rise to a significant portion of deferred tax assets
and liabilities are as follows:
 
<TABLE>
<CAPTION>
                                                      PREDECESSOR               COMPANY
                                                      ------------    ---------------------------
                                                      DECEMBER 31,    DECEMBER 31,     JUNE 30,
                                                          1995            1996           1997
                                                      ------------    ------------    -----------
    <S>                                               <C>             <C>             <C>
    Deferred tax liabilities:
      Fixed assets..................................     $ (426)         $  (32)         $(155)
      Goodwill......................................                       (118)          (615)
                                                         ------          ------          -----
         Total deferred tax liabilities.............       (426)           (150)          (770)
                                                         ------          ------          -----
    Deferred tax assets:
      Net operating loss carryforward...............         96             130            735
      Reserves and accruals.........................        570              60            577
      Research and development credit
         carryforward...............................                                        91
                                                         ------          ------          -----
         Total deferred tax assets..................        666             190          1,403
                                                         ------          ------          -----
    Valuation allowance.............................                        (40)          (633)
                                                         ------          ------          -----
         Net deferred tax assets....................     $  240          $   --          $  --
                                                         ======          ======          =====
</TABLE>
 
     At June 30, 1997, the Company has net operating loss ("NOL") carryforwards
of $1,980 and $990 for Federal and California purposes, respectively. The losses
begin to expire in 2011 and 2001 for Federal and California purposes,
respectively. The Company also has research and development tax credit
carryforwards of $52 and $39 for Federal and California purposes at June 30,
1997, respectively. These credits begin to expire in 2012 for both Federal and
California purposes.
 
     The Internal Revenue Code of 1986, as amended, includes provisions that
limit a company's ability to utilize NOL and tax credit carryforwards when there
is a significant change in ownership. Should such a change in ownership occur,
the amount of NOL and tax credit carryforwards that may be utilized in any given
year will be subject to an annual limitation based on the value of the company
on the date immediately preceding such ownership change.
 
                                      F-17
<PAGE>   79
 
                                STERI-OSS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
          (ALL DOLLAR AMOUNTS IN THOUSANDS, EXCEPT SHARE RELATED DATA)
 
11. PROFIT SHARING PLAN
 
     The Company has an employee profit sharing plan that qualifies as a
deferred salary arrangement under Section 401(k) of the Internal Revenue Code
(the "401(k) Plan"). The Company makes matching contributions equal to employee
contributions up to 4% of the participant's eligible compensation. The Company's
contributions to the 401(k) Plan for the period November 16, 1996 through
December 31, 1996 and the six months ended June 30, 1997 totaled $33 and $169,
respectively.
 
12. SEGMENT INFORMATION AND CONCENTRATIONS OF CREDIT RISK
 
     The Company operates in one segment -- dental implants and related
products. Presented below is net sales information on the geographic areas in
which the Company operates:
 
<TABLE>
<CAPTION>
                                            PREDECESSOR
                                  --------------------------------     COMPANY      PREDECESSOR      COMPANY
                                                                     ------------   ------------   ------------
                                     YEAR ENDED        JANUARY 1     NOVEMBER 16,    SIX MONTHS     SIX MONTHS
                                    DECEMBER 31,        THROUGH        THROUGH         ENDED          ENDED
                                  -----------------   NOVEMBER 15,   DECEMBER 31,     JUNE 30,       JUNE 30,
                                   1994      1995         1996           1996           1996           1997
                                  -------   -------   ------------   ------------   ------------   ------------
                                                                                    (UNAUDITED)
    <S>                           <C>       <C>       <C>            <C>            <C>            <C>
    United States...............  $13,461   $15,702     $ 15,298        $2,072        $  8,388       $ 10,406
    Canada......................      607       938        1,375           187             702            975
                                  -------   -------     --------        ------        --------       --------
    North America...............   14,068    16,640       16,673         2,259           9,090         11,381
    Europe and the Middle
      East......................    4,686     6,192        6,567         1,100           4,161          4,711
    Asia........................    2,427     3,208        3,325           610           1,727          2,309
    Other.......................      987     1,321        1,543           120             766            933
                                  -------   -------     --------        ------        --------       --------
                                  $22,168   $27,361     $ 28,108        $4,089        $ 15,744       $ 19,334
                                  =======   =======     ========        ======        ========       ========
</TABLE>
 
     Financial instruments that potentially subject the Company to
concentrations of credit risk consist primarily of trade receivables. A
concentration of credit risk may exist with respect to trade receivables as
substantially all customers are affiliated with the dental industry. However,
the Company's customer base is made up of a large number of geographically
diverse worldwide customers, except for one European distributor and its
affiliates which account for 11%, 12%, 12%, 12%, 13% and 14% of sales for the
years ended December 31, 1994 and 1995, the period January 1, 1996 through
November 15, 1996, the period November 16, 1996 through December 31, 1996, and
six months ended June 30, 1996 (unaudited) and 1997, respectively. The Company
controls credit risk through credit approvals, credit limits and monitoring
procedures.
 
13. RELATED PARTY TRANSACTIONS
 
     Effective November 16, 1996, the Company entered into a five year
management services agreement with S-O Management LLC, the sole stockholder of
the Company. The agreement provides for management and other advisory services
to the Company for an annual fee of $250. Such agreement terminates upon
consummation of an initial public offering of the Company's Common Stock.
 
     Bausch & Lomb provided certain payroll related benefits to the employees of
the Predecessor. Such costs have been charged to the Predecessor by Bausch &
Lomb based on a percentage of payroll and are included in the consolidated
statements of operations as selling, general and administrative expense for the
years ended December 31, 1994 and 1995 and the period January 1 through November
15, 1996 in the amounts of $108, $649 and $1,390, respectively. Management
believes that the method used to charge these expenses reasonably reflects the
actual costs of such benefits provided and that such expenses on a stand-alone
basis would not produce materially different results.
 
                                      F-18
<PAGE>   80
 
                                STERI-OSS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
          (ALL DOLLAR AMOUNTS IN THOUSANDS, EXCEPT SHARE RELATED DATA)
 
14. SUBSEQUENT EVENTS
 
     In August 1997, the Company amended its Restated and Amended Certificate of
Incorporation to (i) increase the number of authorized shares of Common Stock
from 1,000 to 35,000,000, (ii) decrease the par value per share of the common
stock from $.01 to $.0001, (iii) amend the conversion rights on the Class B
Preferred Stock to delay automatic conversion until the later of the closing of
the Company's initial public offering or March 31, 1998, and (iv) provide for
the automatic conversion of 17,471 shares of Class A mandatorily redeemable
preferred stock and 2,527 shares of Class C mandatorily redeemable preferred
stock.
 
     In August 1997, the Board of Directors declared a 50-for-one split of its
common stock. All share and per share data for the Company have been adjusted to
give retroactive effect for this stock split.
 
     In August 1997, the Board of Directors authorized the filing of a
registration statement for the Offering of the Company's $0.0001 par value
common stock.
 
     In August 1997, stockholders of the Company's Class A and Class C
mandatorily redeemable preferred stock agreed to convert $20,000 into 1,433,547
shares of common stock, upon consummation of the Offering, in lieu of exercising
their redemption rights. The remaining $15,200 of mandatorily redeemable
preferred stock will be redeemed by using the proceeds from the Offering.
 
     In August 1997, the Board of Directors established a stock option plan
("Plan"). The Plan is divided into the following separate components: (i) the
Discretionary Option Grant Program under which eligible individuals in the
Company's employ or service (including officers, non-employee Board Members and
consultants) may be granted options to purchase shares of common stock at an
exercise price not less than their fair market value on the grant date, (ii) the
Stock Issuance Program under which such individuals may, in the Plan
Administrator's discretion, be issued shares of Common Stock directly through
the purchase of shares at a price not less than 100% of their fair market value
at the time of issuance or as a bonus tied to the performance of services, (iii)
the Stock Investment Option Grant Program under which executive officers and
other highly compensated employees may elect to apply a portion of their base
salary to the acquisition of special stock option grants, and (iv) the Director
Fee Option Grant Program, pursuant to which the non-employee Board members may
apply a portion of the annual retainer fee otherwise payable to them in cash
each year to the acquisition of special stock option grants.
 
     In August 1997, the Board of Directors granted options to purchase an
aggregate of 226,000 shares of common stock under the Plan to certain employees
of the Company. In September 1997, the Board of Directors granted options to
purchase an aggregate of 9,000 shares of common stock under the Plan to three
employees of the Company. All of such options were granted at an exercise price
equal to the Offering price.
 
     In September 1997, the holders of warrants to purchase an aggregate of
4,750,000 shares of common stock irrevocably elected to exercise all of such
warrants immediately prior to the consummation of the Offering.
 
                                      F-19
<PAGE>   81
 
======================================================
 
  NO DEALER, SALESPERSON OR OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAN THOSE CONTAINED BY
REFERENCE IN THIS PROSPECTUS AND, IF GIVEN OR MADE, SUCH INFORMATION OR
REPRESENTATIONS MUST NOT BE RELIED UPON 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, THE SHARES BY ANYONE IN ANY JURISDICTION
IN WHICH SUCH OFFER OR SOLICITATION IS NOT AUTHORIZED, OR IN WHICH THE PERSON
MAKING THE OFFER OR SOLICITATION IS NOT QUALIFIED TO DO SO, OR TO ANY PERSON TO
WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER OR SOLICITATION. NEITHER THE DELIVERY OF
THIS PROSPECTUS NOR ANY OFFER OR SALE MADE HEREUNDER SHALL CREATE ANY
IMPLICATION THAT THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME
SUBSEQUENT TO THE DATE HEREOF.
 
                            ------------------------
 
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                       PAGE
<S>                                    <C>
Prospectus Summary...................      3
Risk Factors.........................      8
Use of Proceeds......................     15
Dividend Policy......................     15
Capitalization.......................     16
Dilution.............................     17
Unaudited Pro Forma Consolidated
  Financial Data.....................     18
Selected Historical Consolidated
  Financial Data.....................     23
Management's Discussion and Analysis
  of Financial Condition and Results
  of Operations......................     25
Business.............................     32
Management...........................     43
Certain Transactions.................     50
Principal Stockholders...............     52
Description of Capital Stock.........     54
Shares Eligible for Future Sale......     57
Underwriting.........................     58
Legal Matters........................     60
Experts..............................     60
Additional Information...............     60
Index to Consolidated Financial
  Statements.........................    F-1
</TABLE>
    
 
                            ------------------------
 
  UNTIL       , 1997 (25 DAYS AFTER THE COMMENCEMENT OF THE OFFERING), ALL
DEALERS EFFECTING TRANSACTIONS IN THE COMMON STOCK, WHETHER OR NOT PARTICIPATING
IN THIS DISTRIBUTION, MAY BE REQUIRED TO DELIVER A PROSPECTUS. THIS IS IN
ADDITION TO THE OBLIGATION OF DEALERS TO DELIVER A PROSPECTUS WHEN ACTING AS
UNDERWRITERS AND WITH RESPECT TO THEIR UNSOLD ALLOTMENTS OR SUBSCRIPTIONS.

======================================================
======================================================

                                4,700,000 SHARES
 
                                [STERI-OSS LOGO]
 
                                  COMMON STOCK

                            ------------------------
 
                                   PROSPECTUS

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

                          DONALDSON, LUFKIN & JENRETTE
                             SECURITIES CORPORATION
 
                                 UBS SECURITIES
 
                                  FURMAN SELZ
 
                                           , 1997
 
======================================================
<PAGE>   82
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 13. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION
 
     The following table sets forth the costs and expenses, other than
underwriting discounts and commissions, payable in connection with the sale and
distribution of the securities being registered. All amounts are estimated
except the Securities and Exchange Commission and NASD registration fees. All of
the expenses below will be paid by the Registrant.
 
<TABLE>
<CAPTION>
                                       ITEM
    --------------------------------------------------------------------------
    <S>                                                                         <C>
    Registration fee..........................................................  $ 26,204
    NASD Filing Fee...........................................................     9,148
    Nasdaq National Market listing fee........................................    31,013
    Blue sky fees and expenses................................................     5,000
    Printing and engraving expenses...........................................   150,000
    Legal fees and expenses...................................................   250,000
    Accounting fees and expenses..............................................   200,000
    Transfer Agent and Registrar fees.........................................     5,000
    Miscellaneous.............................................................    23,635
                                                                                 -------
              Total...........................................................  $700,000
                                                                                 =======
</TABLE>
 
ITEM 14. INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
     Under Section 145 of the Delaware General Corporation Law the Registrant
has broad powers to indemnify its directors and officers against liabilities
they may incur in such capacities, including liabilities under the Securities
Act of 1933. The Registrant's Bylaws (Exhibit 3.3 hereto) provide that the
Registrant shall indemnify its directors and officers to the fullest extent
permitted by Delaware law. The Bylaws require the Registrant, subject to certain
limitations, to advance litigation expenses in the case of stockholder
derivative actions or other actions, against an undertaking by the directors and
officers to repay such advances if it is ultimately determined that the
directors or officers are not entitled to indemnification. The Bylaws further
provide that rights conferred under such Bylaws shall not be deemed to be
exclusive of any other right such persons may have or acquire under any
agreement, vote of stockholders or disinterested directors, or otherwise. The
Registrant believes that indemnification under its Bylaws covers at least
negligence and gross negligence.
 
     In addition, the Registrant's Certificate (Exhibit 3.1 hereto) provides
that the Registrant shall indemnify its directors and officers if such persons
acted (i) in good faith, (ii) in a manner reasonably believed to be in or not
opposed to the best interests of the Registrant, and (iii) with respect to any
criminal action or proceeding, with reasonable cause to believe such conduct was
lawful. The Certificate also provides that, pursuant to Delaware law, its
directors shall not be liable for monetary damages for breach of the directors'
fiduciary duty of care to the Registrant and its stockholders. This provision in
the Certificate does not eliminate the duty of care, and in appropriate
circumstances equitable remedies such as injunctive or other forms of
non-monetary relief will remain available under Delaware law. In addition, each
director will continue to be subject to liability for breach of the director's
duty of loyalty to the Registrant for acts or omissions not in good faith or
involving intentional misconduct, for knowing violations of law, for actions
leading to improper personal benefit to the director, and for payment of
dividends or approval of stock repurchases or redemptions that are unlawful
under Delaware law. The provision also does not affect a director's
responsibilities under any other law, such as the federal securities laws or
state or federal environmental laws. The Certificate further provides that the
Registrant is authorized to indemnify its directors and officers to the fullest
extent permitted by law through the Bylaws, agreement, vote of stockholders or
disinterested directors, or otherwise.
 
                                      II-1
<PAGE>   83
 
     The Registrant intends to obtain directors' and officers' liability
insurance in connection with the Offering.
 
     In addition, the Registrant has entered or, concurrently with the Offering,
will enter, into agreements to indemnify its directors and certain of its
officers in addition to the indemnification provided for in the Certificate of
Incorporation and Bylaws. These agreements will, among other things, indemnify
the Registrant's directors and certain of its officers for certain expenses
(including attorneys fees), judgments, fines and settlement amounts incurred by
such person in any action or proceeding, including any action by or in the right
of the Registrant, on account of services by that person as a director or
officer of the Registrant or as a director or officer of any subsidiary of the
Registrant, or as a director or officer of any other company or enterprise that
the person provides services to at the request of the Registrant.
 
     The Underwriting Agreement (Exhibit 1.1 hereto) provides for
indemnification by the Underwriters of the Registrant and its officers and
directors, and by the Registrant of the Underwriters, for certain liabilities
arising under the Securities Act or otherwise.
 
ITEM 15. RECENT SALES OF UNREGISTERED SECURITIES
 
     The following is a summary of transactions by the Registrant during the
last three years preceding the date of this Registration Statement involving
sales of the Registrant's securities that were not registered under the
Securities Act:
 
          1.  In November 1996 in connection with the Acquisition, the
     Registrant issued (i) 22,000 shares of Class A Preferred Stock and warrants
     to purchase 2,900,000 shares of Common Stock at an exercise price of
     $0.0002 per share to one accredited investor for an aggregate consideration
     of $22.0 million; (ii) 10,000 shares of Class B Preferred Stock to Bausch &
     Lomb in consideration for the payment of a portion of the purchase price
     for the assets of S-O ($10.0 million); (iii) 3,185 shares of Class C
     Preferred Stock and warrants to purchase 477,750 shares of Common Stock at
     an exercise price of $0.0002 per share to three accredited investors for an
     aggregate consideration of $3.2 million, which included the cancellation of
     indebtedness in the amount of $10,000; (iv) 50,000 shares of Common Stock
     and warrants to purchase 745,400 shares of Common Stock at an exercise
     price of $0.0002 per share to one accredited investor for an aggregate
     consideration of $1,000; and (v) warrants to purchase an aggregate of
     428,000 shares of Common Stock at an exercise price of $0.0002 per share
     granted to the Registrant's senior lenders and subordinated lenders in
     consideration for making loans to the Registrant and (vi) warrants to
     purchase an aggregate of 198,850 shares of Common Stock at an exercise
     price of $.0002 per share granted to Larkspur Capital Corporation. The
     foregoing issuances were exempt from the registration requirements of the
     Securities Act on the basis that such transactions did not involve any
     public offering. Larkspur Capital Corporation acted as placement agent for
     this transaction.
 
          2.  In January 1997, the Registrant granted performance stock options
     and executive stock options to certain members of the Company's senior
     management team for the purchase of up to an aggregate of 442,061 shares of
     Common Stock at an exercise price equal to $0.40 per share. The executive
     stock options are fully vested and the performance options will vest in
     full upon consummation of the Offering. In January 1997, the Registrant
     also granted options to purchase an aggregate of 214,200 shares of Common
     Stock to the Directors of the Registrant at an exercise price of $1.00 per
     share. Such options are fully-vested. In May 1997, the Registrant granted
     performance options to purchase an aggregate of 77,089 shares of Common
     Stock at an exercise price of $0.40 per share to certain other employees of
     the Registrant. Such options will vest in full upon consummation of the
     Offering. In August 1997, the Registrant granted stock options under the
     1997 Plan to certain employees of the Registrant at an exercise price per
     share equal to the initial public offering price. Such options vest in four
     equal annual installments commencing one year following the grant date.
     None of the optionees referred to in this Item 2 paid any cash
     consideration for these options. The grant of all of such options did not
     involve a "sale" of securities and, therefore, no registration was
     required. The issuance of Common Stock upon exercise of such options is
     exempt by reason of Section 4(2) of the Securities Act and Rule 701
     thereunder.
 
                                      II-2
<PAGE>   84
 
          3.  In August 1997, the Registrant amended its Certificate of
     Incorporation and Certificates of Designation to (i) reduce the authorized
     par value of the Registrant's Common Stock and Preferred Stock from $.01
     per share to $0.0001 per share and (ii) provide for the automatic
     conversion of a portion of the Registrant's Class A Preferred Stock and
     Class C Preferred Stock upon consummation of the Offering. The issuance of
     shares of Common Stock upon conversion of the mandatorily redeemable
     Preferred Stock in the Preferred Stock Conversion will not be registered
     under the Securities Act by reason of the exemption provided by Section
     3(a)(9) thereof.
 
ITEM 16. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
 
     The following Exhibits are attached hereto and incorporated herein by
reference.
 
   
<TABLE>
<S>          <C>
 1.1         Form of Underwriting Agreement.
 3.1*        Certificate of Amendment of Restated Certificate of Incorporation as
             filed with the Delaware Secretary of State on August 25, 1997.
 3.2*        Amended and Restated Certificate of Incorporation to be filed with the
             Delaware Secretary of State upon consummation of the Offering.
 3.3*        Amended and Restated Bylaws of the Registrant.
 4.1*        Specimen certificate representing shares of Common Stock of the
             Registrant.
 4.2*        1997 Stock Incentive Plan, together with form of related Stock Option
             Agreement (and related Notice of Grant of Option) and Stock Issuance
             Agreement.
 4.3*        Form of Performance Stock Option.
 4.4*        Form of Executive Officer Non-Qualified Stock Option Agreement.
 4.5*        Form of Director Stock Option Agreement.
 5.1*        Form of Opinion of Brobeck, Phleger & Harrison LLP.
10.1*        Form of Indemnification Agreement.
10.2*        Securities Purchase Agreement dated November 15, 1996, by and between
             the Registrant and The 1818 Fund II, L.P.
10.3*        Secured Credit Agreement dated November 15, 1996, by and among the
             Registrant, First Source Financial LLP and Union Bank of California,
             N.A. (the "Lenders"), together with Security Agreement dated November
             15, 1996 by and between the Registrant and First Source Financial LLP,
             as Collateral Agent for the Lenders, and Pledge Agreement dated November
             15, 1996, by and between the Registrant and First Source Financial LLP,
             as Collateral Agent for the Lenders.
10.4*        Registration Rights Agreement dated November 15, 1996, by and among the
             Registrant, The 1818 Fund II, L.P., S-O Acquisition LLC, S-O Management
             LLC, Larkspur Capital Corporation, First Source Financial LLP, Union
             Bank of California, N.A., The Equitable Life Assurance Society of the
             United States, Exeter Venture Lenders, L.P. and Exeter Equity Partners,
             L.P.
10.5*        Form of Warrant to Purchase Shares of Common Stock
10.6+*       Letter Agreement dated July 19, 1990, by and between the Registrant and
             Metaux Precieux Metalor Deutschland Gmbh.
10.7         Intentionally omitted.
10.8+        License Agreement dated April 28, 1994, by and between the Registrant
             and Dental Imaging Associates, Inc., together with Addendum thereto
             dated April 11, 1995 by and between the Registrant and Dental Imaging
             Associates, Inc.
10.9*        Employment Agreement dated November 15, 1996, by and between the
             Registrant and Kenneth A. Darienzo.
10.10*       Employment Agreement dated November 15, 1996, by and between the
             Registrant and Martin J. Dymek.
10.11*       Employment Agreement dated November 15, 1996, by and between the
             Registrant and Kenneth Krueger.
10.12*       Sublease dated January 6, 1993, by and between the Registrant and Great
             Western Real Estate.
</TABLE>
    
 
                                      II-3
<PAGE>   85
 
   
<TABLE>
<S>          <C>
10.13*       Asset Purchase Agreement dated July 22, 1996, by and between the
             Registrant, S-O and Bausch & Lomb.
10.14*       Distribution Agreement dated April 18, 1997, by and between Registrant
             and Interpore Orthopaedics, Inc.
10.15*       License Agreement dated April 18, 1997, by and between the Registrant
             and Interpore International.
10.16*       Commitment Letter Agreement dated September 24, 1997 between Union Bank
             and S-O Operating Corp. dated September 24, 1997.
11.1*        Statement Regarding Computation of Pro Forma Net Loss Per Share.
11.2*        Statement Regarding Computation of Supplemental Net Income Per Share.
21.1*        List of Subsidiaries.
23.1         Consent of Price Waterhouse LLP, Independent Accountants.
23.2         Consent of Price Waterhouse LLP, Independent Accountants.
23.3*        Consent of Brobeck, Phleger & Harrison LLP (contained in Exhibit 5.1).
24.1*        Power of Attorney.
27.1*        Financial Data Schedule.
</TABLE>
    
 
- ---------------
   
* Previously filed.
    
 
+ Confidential treatment is being sought with respect to certain portions of
  this agreement. Such portions have been omitted from this filing and have been
  filed separately with the Securities and Exchange Commission.
 
     (B) FINANCIAL STATEMENT SCHEDULES
 
          (1) Schedule II. Valuation and Qualifying Accounts and Reserves.
 
     Schedules not listed above have been omitted because the information
required to be set forth therein is not applicable or is shown in the financial
statements or notes thereto.
 
ITEM 17. UNDERTAKINGS
 
     The Registrant hereby undertakes to provide to the Underwriters at the
closing specified in the Underwriting Agreements certificates in such
denominations and registered in such names as required by the Underwriters to
permit prompt delivery to each purchaser.
 
     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers and controlling persons of the
Registrant pursuant to the foregoing provisions, or otherwise, the Registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Act and is,
therefore, unenforceable. In the event that a claim for indemnification against
such liabilities (other than the payment 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 Act and will be governed by the final adjudication of
such issue.
 
     The undersigned Registrant hereby undertakes that:
 
          (1) For purposes of determining any liability under the Securities Act
     of 1933, the information omitted from the form of prospectus as 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.
 
          (2) For the purpose of determining any liability under the Securities
     Act of 1933, 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-4
<PAGE>   86
 
                                   SIGNATURES
 
   
     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Amendment No. 4 to the Registration Statement on Form S-1
to be signed on its behalf by the undersigned, thereunto duly authorized, in the
City of Yorba Linda, State of California, on October   , 1997.
    
 
                                          STERI-OSS, INC.
 
                                          By: /s/ KENNETH A. DARIENZO
                                            ------------------------------------
                                            Kenneth A. Darienzo
                                            Chairman of the Board and
                                            Chief Executive Officer
 
   
     Pursuant to the requirements of the Securities Act of 1933, this Amendment
No. 4 to the Registration Statement has been signed by the following persons in
the capacities and on the dates indicated.
    
 
   
<TABLE>
<CAPTION>
                  SIGNATURE                                TITLE                     DATE
- ---------------------------------------------  ------------------------------  -----------------
<S>                                            <C>                             <C>
 
/s/ KENNETH A. DARIENZO                        Chairman of the Board and        October   , 1997
- ---------------------------------------------    Chief Executive Officer
Kenneth A. Darienzo                              (Principal Executive
                                                 Officer)
*                                              Director                         October   , 1997
- ---------------------------------------------
Henry Wendt
 
*                                              Director                         October   , 1997
- ---------------------------------------------
Walter W. Grist
 
*                                              Director                         October   , 1997
- ---------------------------------------------
T. Michael Long
 
*                                              Director                         October   , 1997
- ---------------------------------------------
Douglas E. Rogers
 
*                                              Director                         October   , 1997
- ---------------------------------------------
Andrew C. Cowen
 
*                                              Director                         October   , 1997
- ---------------------------------------------
Fredric M. Seegal
 
/s/ BRUCE D. NYE                               Vice President and Chief         October   , 1997
- ---------------------------------------------    Financial Officer (Principal
Bruce D. Nye                                     Accounting and Financial
                                                 Officer)
</TABLE>
    
 
*By: /s/ KENNETH A. DARIENZO
     ---------------------------------
     Kenneth A. Darienzo
     (Attorney-in-fact)
 
                                      II-5
<PAGE>   87
 
                                                                     SCHEDULE II
 
                                 STERI-OSS INC.
 
                 VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
 
<TABLE>
<CAPTION>
                                                      BEGINNING     BAD DEBT                    ENDING
                    DESCRIPTION                        BALANCE      EXPENSE      WRITE-OFFS     BALANCE
- ----------------------------------------------------  ---------     --------     ----------     -------
<S>                                                   <C>           <C>          <C>            <C>
ALLOWANCE FOR DOUBTFUL ACCOUNTS
Year ended December 31, 1994........................      55            36           (28)          63
Year ended December 31, 1995........................      63            27           (11)          79
January 1, 1996 through November 15, 1996...........      79           179          (108)         150
November 16, 1996 through December 31, 1996.........      --            --            --           --
Six months ended June 30, 1997......................      --           237            --          237
</TABLE>
 
DEFERRED TAX VALUATION ALLOWANCE
 
<TABLE>
<CAPTION>
                                                               BEGINNING     INCOME TAX     ENDING
                                                                BALANCE       EXPENSE       BALANCE
                                                               ---------     ----------     -------
<S>                                                            <C>           <C>            <C>
November 16, 1996 through December 31, 1996..................      --             40           40
Six months ended June 30, 1997...............................      40            593          633
</TABLE>
<PAGE>   88
 
                                 EXHIBIT INDEX
 
   
<TABLE>
<CAPTION>
                                                                                     SEQUENTIALLY
    EXHIBIT                                                                            NUMBERED
    NUMBER                                 DESCRIPTION                                   PAGE
    ------    ---------------------------------------------------------------------  ------------
    <S>       <C>                                                                    <C>
     1.1      Form of Underwriting Agreement.
     3.1*     Certificate of Amendment of Restated Certificate of Incorporation as
              filed with the Delaware Secretary of State on August 25, 1997.
     3.2*     Amended and Restated Certificate of Incorporation to be filed with
              the Delaware Secretary of State upon consummation of the Offering.
     3.3*     Amended and Restated Bylaws of the Registrant.
     4.1*     Specimen certificate representing shares of Common Stock of the
              Registrant.
     4.2*     1997 Stock Incentive Plan, together with form of related Stock Option
              Agreement (and related Notice of Grant of Option) and Stock Issuance
              Agreement.
     4.3*     Form of Performance Stock Option.
     4.4*     Form of Executive Officer Non-Qualified Stock Option Agreement.
     4.5*     Form of Director Stock Option Agreement.
     5.1*     Form of Opinion of Brobeck, Phleger & Harrison LLP.
    10.1*     Form of Indemnification Agreement.
    10.2*     Securities Purchase Agreement dated November 15, 1996, by and between
              the Registrant and The 1818 Fund II, L.P.
    10.3*     Secured Credit Agreement dated November 15, 1996, by and among the
              Registrant, First Source Financial LLP and Union Bank of California,
              N.A. (the "Lenders"), together with Security Agreement dated November
              15, 1996 by and between the Registrant and First Source Financial
              LLP, as Collateral Agent for the Lenders, and Pledge Agreement dated
              November 15, 1996, by and between the Registrant and First Source
              Financial LLP, as Collateral Agent for the Lenders.
    10.4*     Registration Rights Agreement dated November 15, 1996, by and among
              the Registrant, The 1818 Fund II, L.P., S-O Acquisition LLC, S-O
              Management LLC, Larkspur Capital Corporation, First Source Financial
              LLP, Union Bank of California, N.A., The Equitable Life Assurance
              Society of the United States, Exeter Venture Lenders, L.P. and Exeter
              Equity Partners, L.P.
    10.5*     Form of Warrant to Purchase Shares of Common Stock
    10.6+*    Letter Agreement dated July 19, 1990, by and between the Registrant
              and Metaux Precieux Metalor Deutschland Gmbh.
    10.7      Intentionally ommitted.
    10.8+     License Agreement dated April 28, 1994, by and between the Registrant
              and Dental Imaging Associates, Inc., together with Addendum thereto
              dated April 11, 1995 by and between the Registrant and Dental Imaging
              Associates, Inc.
    10.9*     Employment Agreement dated November 15, 1996, by and between the
              Registrant and Kenneth A. Darienzo.
    10.10*    Employment Agreement dated November 15, 1996, by and between the
              Registrant and Martin J. Dymek.
    10.11*    Employment Agreement dated November 15, 1996, by and between the
              Registrant and Kenneth Krueger.
</TABLE>
    
<PAGE>   89
 
   
<TABLE>
<CAPTION>
                                                                                     SEQUENTIALLY
    EXHIBIT                                                                            NUMBERED
    NUMBER                                 DESCRIPTION                                   PAGE
    ------    ---------------------------------------------------------------------  ------------
    <S>       <C>                                                                    <C>
    10.12*    Sublease dated January 6, 1993, by and between the Registrant and
              Great Western Real Estate.
    10.13*    Asset Purchase Agreement dated July 22, 1996, by and between the
              Registrant, S-O and Bausch & Lomb.
    10.14*    Distribution Agreement dated April 18, 1997, by and between
              Registrant and Interpore Orthopaedics, Inc.
    10.15*    License Agreement dated April 18, 1997, by and between the Registrant
              and Interpore International.
    10.16*    Commitment Letter Agreement dated September 24, 1997 between Union
              Bank and S-O Operating Corp. dated September 24, 1997.
    11.1*     Statement Regarding Computation of Pro Forma Net Loss Per Share.
    11.2*     Statement Regarding Computation of Supplemental Net Income Per Share.
    21.1*     List of Subsidiaries.
    23.1      Consent of Price Waterhouse LLP, Independent Accountants.
    23.2      Consent of Price Waterhouse LLP, Independent Accountants.
    23.3*     Consent of Brobeck, Phleger & Harrison LLP (contained in Exhibit
              5.1).
    24.1*     Power of Attorney.
    27.1*     Financial Data Schedule.
</TABLE>
    
 
- ---------------
 
   
* Previously filed.
    
 
   
+ Confidential treatment is being sought with respect to certain portions of
  this agreement. Such portions have been omitted from this filing and have been
  filed separately with the Securities and Exchange Commission.
    

<PAGE>   1
                                                                     EXHIBIT 1.1

                                5,405,000 Shares

                                 STERI-OSS, INC.

                                  Common Stock

                             UNDERWRITING AGREEMENT



                                                                         , 1997
                                                             ------------

DONALDSON, LUFKIN & JENRETTE
  SECURITIES CORPORATION
UBS SECURITIES LLC
FURMAN SELZ LLC
  As representatives of the
    several Underwriters
    named in Schedule I hereto
    c/o Donaldson, Lufkin & Jenrette
      Securities Corporation
      277 Park Avenue
      New York, New York 10172

Dear Sirs:

            Steri-Oss, Inc., a Delaware corporation (the "COMPANY"), proposes to
issue and sell 4,700,000 shares of its Common Stock, $.0001 par value per share
(the "FIRM SHARES"), to the several underwriters named in Schedule I hereto (the
"UNDERWRITERS"). The Company also proposes to issue and sell to the several
Underwriters not more than an additional 705,000 shares of its Common Stock,
$.0001 par value per share (the "ADDITIONAL SHARES"), if requested by the
Underwriters as provided in Section 2 hereof. The Firm Shares and the Additional
Shares are hereinafter referred to collectively as the "SHARES." The shares of
Common Stock of the Company to be outstanding after giving effect to the sales
contemplated hereby are hereinafter referred to as the "COMMON STOCK."




<PAGE>   2

            SECTION 1. Registration Statement and Prospectus. The Company has
prepared and filed with the Securities and Exchange Commission (the
"COMMISSION") in accordance with the provisions of the Securities Act of 1933,
as amended, and the rules and regulations of the Commission thereunder
(collectively, the "ACT"), a registration statement on Form S-1, including a
prospectus, relating to the Shares. The registration statement, as amended at
the time it became effective, including the information (if any) deemed to be
part of the registration statement at the time of effectiveness pursuant to Rule
430A under the Act, is hereinafter referred to as the "REGISTRATION STATEMENT";
and the prospectus in the form first used to confirm sales of Shares is
hereinafter referred to as the "PROSPECTUS." If the Company has filed or is
required pursuant to the terms hereof to file a registration statement pursuant
to Rule 462(b) under the Act registering additional shares of Common Stock (a
"RULE 462(B) REGISTRATION STATEMENT"), then, unless otherwise specified, any
reference herein to the term "Registration Statement" shall be deemed to include
such Rule 462(b) Registration Statement.

            SECTION 2. Agreements to Sell and Purchase and Lock-Up Agreements.
On the basis of the representations and warranties contained in this Agreement,
and subject to its terms and conditions, the Company agrees to issue and sell,
and each Underwriter agrees, severally and not jointly, to purchase from the
Company at a price per Share of $______ (the "PURCHASE PRICE") the number of
Firm Shares set forth opposite the name of such Underwriter in Schedule I
hereto.

            On the basis of the representations and warranties contained in this
Agreement, and subject to its terms and conditions, the Company agrees to issue
and sell the Additional Shares and the Underwriters shall have the right to
purchase, severally and not jointly, up to 705,000 Additional Shares from the
Company at the Purchase Price. Additional Shares may be purchased solely for the
purpose of covering over-allotments made in connection with the offering of the
Firm Shares. The Underwriters may exercise their right to purchase Additional
Shares in whole or in part from time to time by giving written notice thereof to
the Company within 30 days after the date of this Agreement. You shall give any
such notice on behalf of the Underwriters and such notice shall specify the
aggregate number of Additional Shares to be purchased pursuant to such exercise
and the date for payment and delivery thereof, which date shall be a business
day (i) no earlier than two business days after such notice has been given (and,
in any event, no earlier than the Closing Date (as hereinafter defined)) and
(ii) no later than ten business days after such notice has been given. If any
Additional Shares are to be purchased, each Underwriter, severally and not
jointly, agrees to purchase from the Company the number of Additional Shares
(subject to such adjustments to eliminate fractional shares as you may
determine) which bears the same proportion to the total number of Additional
Shares to be purchased from the Company as the number of Firm Shares set forth
opposite the name of such Underwriter in Schedule I bears to the total number of
Firm Shares.

            The Company hereby agrees not to (i) offer, pledge, sell, contract
to sell, sell any option or contract to purchase, purchase any option or
contract to sell, grant any option,


                                       2


<PAGE>   3

right or warrant to purchase, or otherwise transfer or dispose of, directly or
indirectly, any shares of Common Stock or any securities convertible into or
exercisable or exchangeable for Common Stock or (ii) enter into any swap or
other arrangement that transfers all or a portion of the economic consequences
associated with the ownership of any Common Stock (regardless of whether any of
the transactions described in clause (i) or (ii) is to be settled by the
delivery of Common Stock, or such other securities, in cash or otherwise),
except to the Underwriters pursuant to this Agreement, for a period of 180 days
after the date of the Prospectus without the prior written consent of Donaldson,
Lufkin & Jenrette Securities Corporation. Notwithstanding the foregoing, during
such period (i) the Company may grant stock options pursuant to the Company's
existing stock option plan and (ii) the Company may issue shares of Common Stock
upon the exercise of an option or warrant or the conversion of a security
outstanding on the date hereof. The Company also agrees not to file any
registration statement (other than a registration statement on Form S-8 covering
outstanding options and shares issuable under the Company's 1997 Stock Incentive
Plan) with respect to any shares of Common Stock or any securities convertible
into or exercisable or exchangeable for Common Stock for a period of 180 days
after the date of the Prospectus without the prior written consent of Donaldson,
Lufkin & Jenrette Securities Corporation. The Company shall, prior to or
concurrently with the execution of this Agreement, deliver an agreement executed
by (i) each of the directors and officers of the Company and (ii) each
stockholder listed on Annex I hereto to the effect that such person will not,
during the period commencing on the date such person signs such agreement and
ending 180 days after the date of the Prospectus, without the prior written
consent of Donaldson, Lufkin & Jenrette Corporation, (A) engage in any of the
transactions described in the first sentence of this paragraph or (B) make any
demand for, or exercise any right with respect to, the registration of any
shares of Common Stock or any securities convertible into or exercisable or
exchangeable for Common Stock.

            The Company hereby confirms its engagement of UBS Securities LLC
("UBS") as, and UBS hereby confirms its agreement with the Company to render
services as, a "qualified independent underwriter," within the meaning of
Section (b)(15) of Rule 2720 of the National Association of Securities Dealers,
Inc. with respect to the offering and sale of the Shares. UBS, solely in its
capacity as the qualified independent underwriter and not otherwise, is referred
to herein as the "QIU." The price at which the Shares will be sold to the public
shall not be higher than the maximum price recommended by the QIU.

            SECTION 3. Terms of Public Offering. The Company is advised by you
that the Underwriters propose (i) to make a public offering of their respective
portions of the Shares as soon after the execution and delivery of this
Agreement as in your judgment is advisable and (ii) initially to offer the
Shares upon the terms set forth in the Prospectus.

SECTION 4. Delivery and Payment. Delivery to the Underwriters of and payment for
the Firm Shares shall be made at 9:00 A.M., New York City time, on __________ ,

                                       3


<PAGE>   4


1997 (the "CLOSING DATE") at such place as you shall designate. The Closing Date
and the location of delivery of and payment for the Firm Shares may be varied by
agreement between you and the Company.

            Delivery to the Underwriters of and payment for any Additional
Shares to be purchased by the Underwriters shall be made at such place as you
shall designate at 9:00 A.M., New York City time, on the date specified in the
applicable exercise notice given by you pursuant to Section 2 (an "OPTION
CLOSING DATE"). Any such Option Closing Date and the location of delivery of and
payment for such Additional Shares may be varied by agreement between you and
the Company.

            Certificates for the Shares shall be registered in such names and
issued in such denominations as you shall request in writing not later than two
full business days prior to the Closing Date or an Option Closing Date, as the
case may be. Such certificates shall be made available to you for inspection not
later than 9:30 A.M., New York City time, on the business day prior to the
Closing Date or the applicable Option Closing Date, as the case may be.
Certificates in definitive form evidencing the Shares shall be delivered to you
on the Closing Date or the applicable Option Closing Date, as the case may be,
with any transfer taxes thereon duly paid by the Company, for the respective
accounts of the several Underwriters, against payment to the Company of the
Purchase Price therefor by wire transfer of Federal or other funds immediately
available in New York City.

            SECTION 5.  Agreements of the Company. The Company agrees with you:

            (a) To advise you promptly and, if requested by you, to confirm such
advice in writing, (i) of any request by the Commission for amendments to the
Registration Statement or amendments or supplements to the Prospectus or for
additional information, (ii) of the issuance by the Commission of any stop order
suspending the effectiveness of the Registration Statement or of the suspension
of qualification of the Shares for offering or sale in any jurisdiction, or the
initiation of any proceeding for such purposes, (iii) when any amendment to the
Registration Statement becomes effective, (iv) if the Company is required to
file a Rule 462(b) Registration Statement after the effectiveness of this
Agreement, when the Rule 462(b) Registration Statement has become effective and
(v) of the happening of any event during the period referred to in Section 5(d)
below which makes any statement of a material fact made in the Registration
Statement or the Prospectus untrue or which requires any additions to or changes
in the Registration Statement or the Prospectus in order to make the statements
therein not misleading. If at any time the Commission shall issue any stop order
suspending the effectiveness of the Registration Statement, the Company will use
its best efforts to obtain the withdrawal or lifting of such order at the
earliest possible time.

            (b) To furnish to you four signed copies of the Registration
Statement as first filed with the Commission and of each amendment to it,
including all exhibits, and to furnish to you and each Underwriter designated by
you such number of conformed copies


                                       4


<PAGE>   5



of the Registration Statement as so filed and of each amendment to it, without
exhibits, as you may reasonably request.

            (c) To prepare the Prospectus, the form and substance of which shall
be satisfactory to you, and to file the Prospectus in such form with the
Commission within the applicable period specified in Rule 424(b) under the Act;
during the period specified in Section 5(d) below, not to file any further
amendment to the Registration Statement and not to make any amendment or
supplement to the Prospectus of which you shall not previously have been advised
or to which you shall reasonably object after being so advised; and, during such
period, to prepare and file with the Commission, promptly upon your reasonable
request, any amendment to the Registration Statement or amendment or supplement
to the Prospectus which may be necessary or advisable in connection with the
distribution of the Shares by you, and to use its best efforts to cause any such
amendment to the Registration Statement to become promptly effective.

            (d) Prior to 10:00 A.M., New York City time, on the first business
day after the date of this Agreement and from time to time thereafter for such
period as in the opinion of counsel for the Underwriters a prospectus is
required by law to be delivered in connection with sales by an Underwriter or a
dealer, to furnish in New York City to each Underwriter and any dealer as many
copies of the Prospectus (and of any amendment or supplement to the Prospectus)
as such Underwriter or dealer may reasonably request.

            (e) If during the period specified in Section 5(d), any event shall
occur or condition shall exist as a result of which, in the opinion of counsel
for the Underwriters, it becomes necessary to amend or supplement the Prospectus
in order to make the statements therein, in the light of the circumstances when
the Prospectus is delivered to a purchaser, not misleading, or if, in the
opinion of counsel for the Underwriters, it is necessary to amend or supplement
the Prospectus to comply with applicable law, forthwith to prepare and file with
the Commission an appropriate amendment or supplement to the Prospectus so that
the statements in the Prospectus, as so amended or supplemented, will not in the
light of the circumstances when it is so delivered, be misleading, or so that
the Prospectus will comply with applicable law, and to furnish to each
Underwriter and to any dealer as many copies thereof as such Underwriter or
dealer may reasonably request.

            (f) Prior to any public offering of the Shares, to cooperate with
you and counsel for the Underwriters in connection with the registration or
qualification of the Shares for offer and sale by the several Underwriters and
by dealers under the state securities or Blue Sky laws of such jurisdictions as
you may request, to continue such registration or qualification in effect so
long as required for distribution of the Shares and to file such consents to
service of process or other documents as may be necessary in order to effect
such registration or qualification; provided, however, that the Company shall
not be required in connection therewith to qualify as a foreign corporation in
any jurisdiction in which it is not now so qualified or to take any action that
would subject it to general


                                       5


<PAGE>   6

consent to service of process or taxation other than as to matters and
transactions relating to the Prospectus, the Registration Statement, any
preliminary prospectus or the offering or sale of the Shares, in any
jurisdiction in which it is not now so subject.

            (g) To mail and make generally available to its stockholders as soon
as practicable an earnings statement covering the twelve-month period ending
December 31, 1998 that shall satisfy the provisions of Section 11(a) of the Act,
and to advise you in writing when such statement has been so made available.

            (h) During the period of three years after the date of this
Agreement, to furnish to you as soon as available copies of all reports or other
communications furnished to the record holders of Common Stock or furnished to
or filed with the Commission or any national securities exchange on which any
class of securities of the Company is listed and such other publicly available
information concerning the Company and its subsidiaries as you may reasonably
request.

            (i) Whether or not the transactions contemplated in this Agreement
are consummated or this Agreement is terminated, to pay or cause to be paid all
expenses incident to the performance of its obligations under this Agreement,
including: (i) the fees, disbursements and expenses of the Company's counsel and
the Company's accountants in connection with the registration and delivery of
the Shares under the Act and all other fees and expenses in connection with the
preparation, printing, filing and distribution of the Registration Statement
(including financial statements and exhibits), any preliminary prospectus, the
Prospectus and all amendments and supplements to any of the foregoing, including
the mailing and delivering of copies thereof to the Underwriters and dealers in
the quantities specified herein, (ii) all costs and expenses related to the
transfer and delivery of the Shares to the Underwriters, including any transfer
or other taxes payable thereon, (iii) all costs of printing or producing this
Agreement and any other agreements or documents in connection with the offering,
purchase, sale or delivery of the Shares, (iv) all expenses in connection with
the registration or qualification of the Shares for offer and sale under the
securities or Blue Sky laws of the several states and all costs of printing or
producing any Preliminary and Supplemental Blue Sky Memoranda in connection
therewith (including the filing fees and fees and disbursements of counsel for
the Underwriters in connection with such registration or qualification and
memoranda relating thereto), (v) the filing fees and disbursements of counsel
for the Underwriters in connection with the review and clearance of the offering
of the Shares by the National Association of Securities Dealers, Inc., (vi) all
fees and expenses in connection with the preparation and filing of the
registration statement on Form 8-A relating to the Common Stock and all costs
and expenses incident to the listing of the Shares on the Nasdaq National
Market, (vii) the cost of printing certificates representing the Shares, (viii)
the costs and charges of any transfer agent, registrar and/or depositary, and
(ix) all other costs and expenses incident to the performance of the obligations
of the Company hereunder for which provision is not otherwise made in this
Section.


                                       6

<PAGE>   7



            (j) To use its best efforts to list for quotation the Shares on the
Nasdaq National Market and to use its best efforts to maintain the listing of
the Shares on the Nasdaq National Market for a period of three years after the
date of this Agreement.

            (k) To use its best efforts to do and perform all things required or
necessary to be done and performed under this Agreement by the Company prior to
the Closing Date or any Option Closing Date, as the case may be, and to satisfy
all conditions precedent to the delivery of the Shares.

            (l) If the Registration Statement at the time of the effectiveness
of this Agreement does not cover all of the Shares, to file a Rule 462(b)
Registration Statement with the Commission registering the Shares not so covered
in compliance with Rule 462(b) by 10:00 P.M., New York City time, on the date of
this Agreement and to pay to the Commission the filing fee for such Rule 462(b)
Registration Statement at the time of the filing thereof or to give irrevocable
instructions for the payment of such fee pursuant to Rule 111(b) under the Act.

            SECTION 6. Representations and Warranties of the Company. The
Company represents and warrants to each Underwriter that:

            (a) The Registration Statement has become effective (other than any
Rule 462(b) Registration Statement to be filed by the Company after the
effectiveness of this Agreement); any Rule 462(b) Registration Statement filed
after the effectiveness of this Agreement will become effective no later than
10:00 P.M., New York City time, on the date of this Agreement; and no stop order
suspending the effectiveness of the Registration Statement is in effect, and no
proceedings for such purpose are pending before or, to the knowledge of the
Company, threatened by the Commission.

           (b) (i) The Registration Statement (other than any Rule 462(b)
Registration Statement to be filed by the Company after the effectiveness of
this Agreement), when it became effective, did not contain and, as amended, if
applicable, 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, (ii) the Registration Statement (other than
any Rule 462(b) Registration Statement to be filed by the Company after the
effectiveness of this Agreement) and the Prospectus comply and, as amended or
supplemented, if applicable, will comply in all material respects with the Act,
(iii) if the Company is required to file a Rule 462(b) Registration Statement
after the effectiveness of this Agreement, such Rule 462(b) Registration
Statement and any amendments thereto, when they become effective (A) 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 (B) will comply in all material respects with the Act and (iv)
the Prospectus does not contain and, as amended or supplemented, if applicable,
will not contain any untrue statement of a material fact or omit to state a


                                       7


<PAGE>   8


material fact necessary to make the statements therein, in the light of the
circumstances under which they were made, not misleading, except that the
representations and warranties set forth in this paragraph do not apply to
statements or omissions in the Registration Statement or the Prospectus based
upon information relating to any Underwriter furnished to the Company in writing
by such Underwriter through you expressly for use therein.

            (c) Each preliminary prospectus filed subsequent to Amendment No. 2
to the registration statement, or filed pursuant to Rule 424 under the Act,
complied when so filed in all material respects with the Act, and did not
contain an 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, in
the light of the circumstances under which they were made, not misleading,
except that the representations and warranties set forth in this paragraph do
not apply to statements or omissions in any preliminary prospectus based upon
information relating to any Underwriter furnished to the Company in writing by
such Underwriter through you expressly for use therein.

            (d) Each of the Company and its subsidiaries has been duly
incorporated, is validly existing as a corporation in good standing under the
laws of its jurisdiction of incorporation and has the corporate power and
authority to carry on its business as described in the Prospectus and to own,
lease and operate its properties, and each is duly qualified and is in good
standing as a foreign corporation authorized to do business in each jurisdiction
in which the nature of its business or its ownership or leasing of property
requires such qualification, except where the failure to be so qualified would
not have a material adverse effect on the business, prospects, financial
condition or results of operations of the Company and its subsidiaries, taken as
a whole.

            (e) There are no outstanding subscriptions, rights, warrants,
options, calls, convertible securities, commitments of sale or liens granted or
issued by the Company or any of its subsidiaries relating to or entitling any
person to purchase or otherwise to acquire any shares of the capital stock of
the Company or any of its subsidiaries, except as otherwise disclosed in the
Registration Statement.

            (f) All the outstanding shares of capital stock of the Company have
been duly authorized and validly issued and are fully paid, nonassessable and
not subject to any preemptive or similar rights; and the Shares have been duly
authorized and, when issued and delivered to the Underwriters against payment
therefor as provided by this Agreement, will be validly issued, fully paid and
nonassessable, and the issuance of such Shares will not be subject to any
preemptive or similar rights.

            (g) All of the outstanding shares of capital stock of each of the
Company's subsidiaries have been duly authorized and validly issued and are
fully paid and nonassessable, and are owned by the Company, directly or
indirectly through one or more 

                                       8


<PAGE>   9


subsidiaries, free and clear of any security interest, claim, lien, encumbrance
or adverse interest of any nature.

            (h) The authorized capital stock of the Company conforms as to legal
matters to the description thereof contained in the Prospectus.

            (i) Neither the Company nor any of its subsidiaries is in violation
of its respective charter or by-laws or in material default in the performance
of any obligation, agreement, covenant or condition contained in any indenture,
loan agreement, mortgage, lease or other agreement or instrument that is
material to the Company and its subsidiaries, taken as a whole, to which the
Company or any of its subsidiaries is a party or by which the Company or any of
its subsidiaries or their respective property is bound.

            (j) The execution, delivery and performance of this Agreement by the
Company, the compliance by the Company with all the provisions hereof and the
consummation of the transactions contemplated hereby will not (i) require any
consent, approval, authorization or other order of, or qualification with, any
court or governmental body or agency (except such as have been obtained under
the Act and the Securities Exchange Act of 1934, as amended (the "EXCHANGE
ACT"), and as may be required under rules and regulations of the National
Association of Securities Dealers, Inc. and the securities or Blue Sky laws of
the various states), (ii) conflict with or constitute a breach of any of the
terms or provisions of, or a default under, the charter or by-laws of the
Company or any of its subsidiaries in effect at the Closing Date or any
indenture, loan agreement, mortgage, lease or other agreement or instrument that
is material to the Company and its subsidiaries, taken as a whole, to which the
Company or any of its subsidiaries is a party or by which the Company or any of
its subsidiaries or their respective property is bound, (iii) violate or
conflict with any applicable law or any rule, regulation, judgment, order or
decree of any court or any governmental body or agency having jurisdiction over
the Company, any of its subsidiaries or their respective property or (iv) result
in the suspension, termination or revocation of any Authorization (as defined
below) of the Company or any of its subsidiaries or any other impairment of the
rights of the holder of any such Authorization.

            (k) There are no legal or governmental proceedings pending or, to
the Company's knowledge, threatened to which the Company or any of its
subsidiaries is or could be a party or to which any of their respective property
is or could be subject that are required to be described in the Registration
Statement or the Prospectus and are not so described; nor are there any
contracts or other documents that are required to be described in the
Registration Statement or the Prospectus or to be filed as exhibits to the
Registration Statement that are not so described or filed as required.

            (l) Neither the Company nor any of its subsidiaries has violated any
foreign, federal, state or local law or regulation relating to (i) the
manufacturing, testing, quality control or product labeling of medical devices
("MEDICAL DEVICE LAWS"), except as 


                                       9



<PAGE>   10



disclosed in the Prospectus, or (ii) the protection of human health and safety,
the environment or hazardous or toxic substances or wastes, pollutants or
contaminants ("ENVIRONMENTAL LAWS") or any provisions of the Employee Retirement
Income Security Act of 1974, as amended, or the rules and regulations
promulgated thereunder, except for such violations which, singly or in the
aggregate, would not reasonably be expected to have a material adverse effect on
the business, prospects, financial condition or results of operation of the
Company and its subsidiaries, taken as a whole.

            (m) Each of the Company and its subsidiaries has such permits,
licenses, consents, exemptions, franchises, authorizations and other approvals
(each, an "AUTHORIZATION") of, and has made all filings with and notices to, all
governmental or regulatory authorities and all courts and other tribunals,
including, without limitation, under any applicable Medical Device Laws or
Environmental Laws, as are necessary to own, lease, license and operate its
respective properties and to conduct its business, except where the failure to
have any such Authorization or to make any such filing or notice would not,
singly or in the aggregate, have a material adverse effect on the business,
prospects, financial condition or results of operations of the Company and its
subsidiaries, taken as a whole. Each such Authorization is valid and in full
force and effect and each of the Company and its subsidiaries is in compliance
with all the terms and conditions thereof and with the rules and regulations of
the authorities and governing bodies having jurisdiction with respect thereto;
and no event has occurred (including, without limitation, the receipt of any
notice from any authority or governing body) which allows or, after notice or
lapse of time or both, would allow, revocation, suspension or termination of any
such Authorization or results or, after notice or lapse of time or both, would
result in any other impairment of the rights of the holder of any such
Authorization; and such Authorizations contain no restrictions that are
burdensome to the Company or any of its subsidiaries; except where such failure
to be valid and in full force and effect or to be in compliance, the occurrence
of any such event or the presence of any such restriction would not, singly or
in the aggregate, have a material adverse effect on the business, prospects,
financial condition or results of operations of the Company and its
subsidiaries, taken as a whole.

            (n) The costs and liabilities associated with Environmental Laws
(including, without limitation, any capital or operating expenditures required
for clean-up, closure of properties or compliance with Environmental Laws or any
Authorization, any related constraints on operating activities and any potential
liabilities to third parties) would not, singly or in the aggregate, have a
material adverse effect on the business, prospects, financial condition or
results of operations of the Company and its subsidiaries, taken as a whole.

            (o) This Agreement has been duly authorized, executed and delivered
by the Company.


                                       10



<PAGE>   11


            (p) Price Waterhouse LLP are independent public accountants with
respect to the Company and its subsidiaries as required by the Act.

            (q) The consolidated financial statements included in the
Registration Statement and the Prospectus (and any amendment or supplement
thereto), together with related schedules and notes, present fairly the
consolidated financial position, results of operations and changes in financial
position of the Company and its subsidiaries or predecessor, as applicable, on
the basis stated therein at the respective dates or for the respective periods
to which they apply; such statements and related schedules and notes have been
prepared in accordance with generally accepted accounting principles
consistently applied throughout the periods involved, except as disclosed
therein; the supporting schedules, if any, included in the Registration
Statement present fairly in accordance with generally accepted accounting
principles the information required to be stated therein; and the other
financial and statistical information and data set forth in the Registration
Statement and the Prospectus (and any amendment or supplement thereto) are, in
all material respects, fairly presented and prepared on a basis consistent with
such financial statements and the books and records of the Company.

            (r) The pro forma financial statements of the Company and its
subsidiaries and the related notes thereto set forth in the Registration
Statement and the Prospectus (and any supplement or amendment thereto) have been
prepared on a basis consistent with the historical financial statements of the
Company and its subsidiaries or predecessor, as applicable, give effect to the
assumptions used in the preparation thereof on a reasonable basis and present
fairly the historical and proposed transactions contemplated by the Registration
Statement and the Prospectus. Such pro forma financial statements have been
prepared in accordance with the applicable requirements of Rule 11-02 of
Regulation S-X promulgated by the Commission. The other pro forma financial and
statistical information and data set forth in the Registration Statement and the
Prospectus (and any supplement or amendment thereto) are, in all material
respects, fairly presented and prepared on a basis consistent with the pro forma
financial statements.

            (s) The Company is not and, after giving effect to the offering and
sale of the Shares and the application of the proceeds thereof as described in
the Prospectus, will not be, an "investment company" as such term is defined in
the Investment Company Act of 1940, as amended.

            (t) There are no contracts, agreements or understandings between the
Company and any person granting such person the right to require the Company to
file a registration statement under the Act with respect to any securities of
the Company or to require the Company to include such securities with the Shares
registered pursuant to the Registration Statement, except as otherwise disclosed
in the Registration Statement.

            (u) Since the respective dates as of which information is given in
the Prospectus other than as set forth in the Prospectus (exclusive of any
amendments or supplements 


                                       11



<PAGE>   12



thereto subsequent to the date of this Agreement), (i) there has not occurred
any material adverse change or any development involving a prospective material
adverse change in the financial condition or the earnings, business, management
or operations of the Company and its subsidiaries, taken as a whole, (ii) there
has not been any material adverse change or any development involving a
prospective material adverse change in the capital stock or in the long-term
debt of the Company or any of its subsidiaries and (iii) neither the Company nor
any of its subsidiaries has incurred any material liability or obligation,
direct or contingent, in each case other than the entry by the Company into the
bank credit agreement contemplated by the Prospectus.

            (v) The Company and its subsidiaries have good and marketable title
in fee simple to all real property and good and marketable title to all personal
property owned by them which is material to the business of the Company and its
subsidiaries, in each case free and clear of all liens, encumbrances and defects
except such as are described in the Prospectus or such as do not materially
affect the value of such property and do not interfere with the use made and
proposed to be made of such property by the Company and its subsidiaries; and
any real property and buildings held under lease by the Company and its
subsidiaries are held by them under valid, subsisting and enforceable leases
with such exceptions as are not material and do not interfere with the use made
and proposed to be made of such property and buildings by the Company and its
subsidiaries, in each case except as described in the Prospectus.

            (w) To the Company's knowledge, the Company and its subsidiaries
own, possess or have sufficient rights to use, or can acquire on reasonable
terms all material licenses or other rights to use, all patents, licenses,
inventions, copyrights, know-how (including trade secrets and other unpatented
and/or unpatentable proprietary or confidential information, systems or
procedures), trademarks, service marks and trade names ("INTELLECTUAL PROPERTY")
currently employed by them in connection with their business as described in the
Registration Statement, except where the failure to own, possess, have the right
to use or otherwise be able to acquire the right to use such Intellectual
Property would not, singly or in the aggregate, have a material adverse effect
on the business, prospects, financial condition or results of operation of the
Company and its subsidiaries, taken as a whole; and neither the Company nor any
of its subsidiaries has received any notice of infringement of or conflict with
asserted rights of others with respect to any of such Intellectual Property
which, singly or in the aggregate, if the subject of an unfavorable decision,
ruling or finding, would have a material adverse effect on the business,
prospects, financial condition or results of operations of the Company and its
subsidiaries, taken as a whole.

            (x) The Company and each of its subsidiaries carry or are covered by
insurance in such amounts and covering such losses and risks as is reasonable
for the conduct of their respective businesses and the value of their respective
properties and as is customary for companies engaged in similar businesses or
similar geographic areas, as applicable; and neither the Company nor any of its
subsidiaries (i) has received notice from any 


                                       12

<PAGE>   13



insurer or agent of such insurer that substantial capital improvements or other
material expenditures will have to be made in order to continue such insurance
or (ii) has any reason to believe that it will not be able to renew its existing
insurance coverage as and when such coverage expires or to obtain similar
coverage from similar insurers at a cost that would not have a material adverse
effect on the business, prospects, financial conditions or results of operations
of the Company and its subsidiaries, taken as a whole.

            (y) No relationship, direct or indirect, exists between or among the
Company or any of its subsidiaries on the one hand, and the directors, officers,
stockholders, customers or suppliers of the Company or any of its subsidiaries
on the other hand, which is required by the Act to be described in the
Registration Statement or the Prospectus which is not so described.

            (z) There is no (i) significant unfair labor practice complaint,
grievance or arbitration proceeding pending or, to the knowledge of the Company,
threatened against the Company or any of its subsidiaries before the National
Labor Relations Board or any state or local labor relations board or (ii)
strike, labor dispute, slowdown or stoppage pending or, to the knowledge of the
Company, threatened against the Company or any of its subsidiaries, except for
such actions specified in clause (i) or (ii) above, which, singly or in the
aggregate, would not have a material adverse effect on the business, prospects,
financial condition or results of operations of the Company and its
subsidiaries, taken as a whole. To the best of the Company's knowledge, no
collective bargaining organizing activities are taking place with respect to the
Company or any of its subsidiaries.

            (aa) The Company and each of its subsidiaries maintains a system of
internal accounting controls sufficient to provide reasonable assurance that (i)
transactions are executed in accordance with management's general or specific
authorizations; (ii) transactions are recorded as necessary to permit
preparation of financial statements in conformity with generally accepted
accounting principles and to maintain asset accountability; (iii) access to
assets is permitted only in accordance with management's general or specific
authorization; and (iv) the recorded accountability for assets is compared with
the existing assets at reasonable intervals and appropriate action is taken with
respect to any differences.

            (bb) All material tax returns required to be filed by the Company
and each of its subsidiaries in any jurisdiction have been filed, other than
those filings being contested in good faith or for which extensions have been
obtained, and all material taxes, including withholding taxes, penalties and
interest, assessments, fees and other charges due pursuant to such returns or
pursuant to any assessment received by the Company or any of its subsidiaries
have been paid, other than those being contested in good faith or for which
adequate reserves have been provided.


                                       13



<PAGE>   14


            SECTION 7. Indemnification. (a) The Company agrees to indemnify and
hold harmless each Underwriter, its directors, its officers and each person, if
any, who controls any Underwriter within the meaning of Section 15 of the Act or
Section 20 of the Exchange Act from and against any and all losses, claims,
damages, liabilities and judgments (including, without limitation, any legal or
other expenses incurred in connection with investigating or defending any
matter, including any action, that could give rise to any such losses, claims,
damages, liabilities or judgments) caused by any untrue statement or alleged
untrue statement of a material fact contained in the Registration Statement (or
any amendment thereto), the Prospectus (or any amendment or supplement thereto)
or any preliminary prospectus, or caused by 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, except insofar as such losses, claims,
damages, liabilities or judgments are caused by any such untrue statement or
omission or alleged untrue statement or omission based upon information relating
to any Underwriter furnished in writing to the Company by such Underwriter
through you expressly for use therein; provided, however, that the
indemnification contained in this Section 7(a) shall not inure to the benefit of
any Underwriter (or to the benefit of any person controlling such Underwriter)
on account of any such losses, claims, damages, liabilities or judgments arising
from the sale of Common Stock by such Underwriter to any Person if a copy of the
Prospectus (as amended or supplemented if the Company shall have furnished any
amendments or supplements thereto) shall not have been delivered or sent to such
person within the time required by the Act, and the untrue statement or alleged
untrue statement or omission or alleged omission of a material fact was
corrected in the Prospectus (as amended or supplemented if the Company shall
have furnished any amendments or supplements thereto), provided that the Company
has furnished the Prospectus (as amended or supplemented if the Company shall
have furnished any amendments or supplements thereto) to the several
Underwriters in sufficient time for such delivery.

            (b) Each Underwriter agrees, severally and not jointly, to indemnify
and hold harmless the Company, its directors, its officers who sign the
Registration Statement and each person, if any, who controls the Company within
the meaning of Section 15 of the Act or Section 20 of the Exchange Act, to the
same extent as the foregoing indemnity from the Company to such Underwriter but
only with reference to information relating to such Underwriter furnished in
writing to the Company by such Underwriter through you expressly for use in the
Registration Statement (or any amendment thereto), the Prospectus (or any
amendment or supplement thereto) or any preliminary prospectus.

            (c) In case any action shall be commenced involving any person in
respect of which indemnity may be sought pursuant to Section 7(a) or 7(b) (the
"INDEMNIFIED PARTY"), the Indemnified Party shall promptly notify the person
against whom such indemnity may be sought (the "INDEMNIFYING PARTY") in writing
and the indemnifying party shall assume the defense of such action, including
the employment of counsel reasonably satisfactory to the Indemnified Party and
the payment of all fees and expenses


                                       14


<PAGE>   15

of such counsel, as incurred (except that in the case of any action in respect
of which indemnity may be sought pursuant to both Sections 7(a) and 7(b), the
Underwriter shall not be required to assume the defense of such action pursuant
to this Section 7(c), but may employ separate counsel and participate in the
defense thereof, but the fees and expenses of such counsel, except as provided
below, shall be at the expense of such Underwriter). Any Indemnified Party shall
have the right to employ separate counsel in any such action and participate in
the defense thereof, but the fees and expenses of such counsel shall be at the
expense of the Indemnified Party unless (i) the employment of such counsel shall
have been specifically authorized in writing by the Indemnifying Party, (ii) the
Indemnifying Party shall have failed to assume the defense of such action or
employ counsel reasonably satisfactory to the Indemnified Party or (iii) the
named parties to any such action (including any impleaded parties) include both
the Indemnified Party and the Indemnifying Party, and the Indemnified Party
shall have been advised by such 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 (in which case the Indemnifying Party shall
not have the right to assume the defense of such action on behalf of the
Indemnified Party). In any such case, the Indemnifying Party shall not, in
connection with any one action or separate but substantially similar or related
actions in the same jurisdiction arising out of the same general allegations or
circumstances, be liable for the fees and expenses of more than one separate
firm of attorneys (in addition to any local counsel) for all Indemnified Parties
and all such fees and expenses shall be reimbursed as they are incurred. Such
firm shall be designated in writing by Donaldson, Lufkin & Jenrette Securities
Corporation, in the case of parties indemnified pursuant to Section 7(a), and by
the Company, in the case of parties indemnified pursuant to Section 7(b). The
Indemnifying Party shall indemnify and hold harmless the Indemnified Party from
and against any and all losses, claims, damages, liabilities and judgments by
reason of any settlement of any action (i) effected with its written consent or
(ii) effected without its written consent if the settlement is entered into more
than twenty business days after the Indemnifying Party shall have received a
written request from the Indemnified Party for reimbursement for the fees and
expenses of counsel (in any case where such fees and expenses are at the expense
of the Indemnifying Party) and a written statement regarding the potential for
settlement of such action (including an estimated date for such settlement) and,
prior to the date of such settlement, the Indemnifying Party shall have failed
to comply with such reimbursement request; provided that clause (ii) shall not
apply to fees and expenses to the extent they are in good faith contested. No
Indemnifying Party shall, without the prior written consent of the Indemnified
Party, effect any settlement or compromise of, or consent to the entry of
judgment with respect to, any pending or threatened action in respect of which
the Indemnified Party is or could have been a party and indemnity or
contribution may be or could have been sought hereunder by the Indemnified
Party, unless such settlement, compromise or judgment (i) includes an
unconditional release of the Indemnified Party from all liability on claims that
are or could reasonably have been the subject matter of such action and (ii)
does not include a statement as to or an admission of fault, culpability or a
failure to act, by or on behalf of the Indemnified Party.


                                       15

<PAGE>   16

            (d) To the extent the indemnification provided for in this Section 7
is unavailable to an Indemnified Party or insufficient in respect of any losses,
claims, damages, liabilities or judgments referred to therein, then each
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 and judgments (i) in such
proportion as is appropriate to reflect the relative benefits received by the
Company on the one hand and the Underwriters on the other hand from the offering
of the Shares or (ii) if the allocation provided by clause 7(d)(i) above is not
permitted by applicable law, in such proportion as is appropriate to reflect not
only the relative benefits referred to in clause 7(d)(i) above but also the
relative fault of the Company on the one hand and the Underwriters on the other
hand in connection with the statements or omissions which resulted in such
losses, claims, damages, liabilities or judgments, as well as any other relevant
equitable considerations. The relative benefits received by the Company on the
one hand and the Underwriters on the other hand shall be deemed to be in the
same proportion as the total net proceeds from the offering (before deducting
expenses) received by the Company, and the total underwriting discounts and
commissions received by the Underwriters, bear to the total price to the public
of the Shares, in each case as set forth in the table on the cover page of the
Prospectus. The relative fault of the Company on the one hand and the
Underwriters on the other hand shall be determined by reference to, among other
things, whether the untrue or alleged untrue statement of a material fact or the
omission or alleged omission to state a material fact relates to information
supplied by the Company or the Underwriters and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
statement or omission.

            The Company and the Underwriters agree that it would not be just and
equitable if contribution pursuant to this Section 7(d) were determined by pro
rata allocation (even if the Underwriters were treated as one entity for such
purpose) or by any other method of allocation which does not take account of the
equitable considerations referred to in the immediately preceding paragraph. The
amount paid or payable by an Indemnified Party as a result of the losses,
claims, damages, liabilities or judgments referred to in the immediately
preceding paragraph shall be deemed to include, subject to the limitations set
forth above, any legal or other expenses incurred by such indemnified party in
connection with investigating or defending any matter which indemnity may be
sought pursuant to this Section 7. Notwithstanding the provisions of this
Section 7, no Underwriter shall be required to contribute any amount in excess
of the amount by which the total price at which the Shares underwritten by it
and distributed to the public were offered 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. No
person guilty of fraudulent misrepresentation (within the meaning of Section
11(f) of the Act) shall be entitled to contribution from any person who was not
guilty of such fraudulent misrepresentation. The Underwriters' obligations 


                                       16



<PAGE>   17
<EL><TU>

to contribute pursuant to this Section 7(d) are several in proportion to the
respective number of Shares purchased by each of the Underwriters hereunder and
not joint.

            (e) The remedies provided for in this Section 7 are not exclusive
and shall not limit any rights or remedies which may otherwise be available to
any indemnified party at law or in equity.

            SECTION 8. Indemnification of QIU. (a) The Company agrees to
indemnify and hold harmless the QIU, its directors, its officers and each
person, if any, who controls the QIU within the meaning of Section 15 of the Act
or Section 20 of the Exchange Act, from and against any and all losses, claims,
damages, liabilities and judgments (including, without limitation, any legal or
other expenses incurred in connection with investigating or defending any
matter, including any action, that could give rise to any such losses, claims,
damages, liabilities or judgments for which indemnity may be sought pursuant to
this Section 8) related to, based upon or arising out of (i) any untrue
statement or alleged untrue statement of a material fact contained in the
Registration Statement (or any amendment thereto), the Prospectus (or any
amendment or supplement thereto) or any 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 (ii) the
QIU's activities as QIU under its engagement pursuant to Section 2 hereof,
except in the case of this clause (ii) insofar as any such losses, claims,
damages, liabilities or judgments resulted solely from the willful misconduct or
gross negligence of the QIU, and except in the case of clause (i) insofar as
such losses, claims, damages, liabilities or judgments are caused by any such
untrue statement or omission or alleged untrue statement or omission based upon
information relating to the QIU furnished in writing to the Company by the QIU
through you expressly for use therein; provided, however, that the
indemnification contained in this Section 8(a) shall not inure to the benefit of
the QIU (or to the benefit of any person controlling the QIU) on account of any
such losses, claims, damages, liabilities or judgments arising from the sale of
Common Stock by the QIU to any Person if a copy of the Prospectus (as amended or
supplemented if the Company shall have furnished any amendments or supplements
thereto) shall not have been delivered or sent to such person within the time
required by the Act, and the untrue statement or alleged untrue statement or
omission or alleged omission of a material fact was corrected in the Prospectus
(as amended or supplemented if the Company shall have furnished any amendments
or supplements thereto), provided that the Company has furnished the Prospectus
(as amended or supplemented if the Company shall have furnished any amendments
or supplements thereto) to the QIU in sufficient time for such delivery.

            (b) In case any action shall be commenced involving any person in
respect of which indemnity may be sought pursuant to Section 8(a) (the "QIU
INDEMNIFIED PARTY"), the QIU Indemnified Party shall promptly notify the Company
in writing and the Company shall assume the defense of such action, including
the employment of counsel reasonably satisfactory to the QIU Indemnified Party
and the payment of all fees and expenses of such counsel, as incurred. Any QIU
Indemnified Party shall have the right to employ separate counsel in any such
action and participate in the defense thereof, but the fees and expenses of such
counsel shall be at the expense of the QIU Indemnified Party unless (i) the
employment of such counsel shall have been specifically authorized in writing by
the Company, (ii) the Company shall have failed to assume the defense of such
action or employ counsel reasonably satisfactory to the QIU Indemnified Party or
(iii) the named parties to any such action (including any impleaded parties)
include both the QIU Indemnified Party and the Company, and the QIU Indemnified
Party shall have been advised by such counsel that there may be one or more
legal defenses available to it which are different from or additional to those
available to the Company (in which case the Company shall not have the right to
assume the defense of such action on behalf of the QIU Indemnified Party). In
any such case, the Company shall not, in connection with any one action or
separate but substantially similar or related actions in the same jurisdiction
arising out of the same general allegations or circumstances, be liable for the


                                       17



<PAGE>   18

fees and expenses of more than one separate firm of attorneys (in addition to
any local counsel) for all QIU Indemnified Parties, which firm shall be
designated by the QIU, and all such fees and expenses shall be reimbursed as
they are incurred. The Company shall indemnify and hold harmless the QIU
Indemnified Party from and against any and all losses, claims, damages,
liabilities and judgments by reason of any settlement of any action (i) effected
with its written consent or (ii) effected without its written consent if the
settlement is entered into more than twenty business days after the Company
shall have received a written request from the QIU Indemnified Party for
reimbursement for the fees and expenses of counsel (in any case where such fees
and expenses are at the expense of the Company) and a written statement
regarding the potential for settlement of such action (including an estimated
date for such settlement) and, prior to the date of such settlement, the Company
shall have failed to comply with such reimbursement request. The Company shall
not, without the prior written consent of the QIU Indemnified Party, effect any
settlement or compromise of, or consent to the entry of judgment with respect
to, any pending or threatened action in respect of which the QIU Indemnified
Party is or could have been a party and indemnity or contribution may be or
could have been sought hereunder by the QIU Indemnified Party, unless such
settlement, compromise or judgment (i) includes an unconditional release of the
QIU Indemnified Party from all liability on claims that are or could have been
the subject matter of such action and (ii) does not include a statement as to or
an admission of fault, culpability or a failure to act, by or on behalf of the
QIU Indemnified Party.

            (c) To the extent the indemnification provided for in this Section 8
is unavailable to a QIU Indemnified Party or insufficient in respect of any
losses, claims, damages, liabilities or judgments referred to therein, then the
Company, in lieu of indemnifying such QIU Indemnified Party, shall contribute to
the amount paid or payable by such QIU Indemnified Party as a result of such
losses, claims, damages, liabilities and judgments (i) in such proportion as is
appropriate to reflect the relative benefits received by the Company on the one
hand and the QIU on the other hand from the offering of the Shares or (ii) if
the allocation provided by Section 8(c)(i) above is not permitted by applicable
law, in such proportion as is appropriate to reflect not only the relative
benefits referred to in Section 8(c)(i) above but also the relative fault of the
Company on the one hand and the QIU on the other hand in connection with the
statements or omissions which resulted in such losses, claims, damages,
liabilities or judgments, as well as any other relevant equitable
considerations. The relative benefits received by the Company on the one hand
and the QIU on the other hand shall be deemed to be in the same proportion as
the total net proceeds from the offering (before deducting expenses) received by
the Company as set forth in the table on the cover page of the Prospectus, and
the fee received by the QIU pursuant to Section 2 hereof, bear to the sum of
such total net proceeds and such fee. The relative fault of the Company on the
one hand and the QIU on the other hand shall be determined by reference to,
among other things, whether the untrue or alleged untrue statement of a material
fact or the omission or alleged omission to state a material fact relates to
information supplied by the Company or the QIU and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such


                                       18


<PAGE>   19

statement or omission and whether the QIU's activities as QIU under its
engagement pursuant to Section 2 hereof involved any willful misconduct or gross
negligence on the part of the QIU.

            The Company and the QIU agree that it would not be just and
equitable if contribution pursuant to this Section 8(c) 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. The amount paid or payable by a QIU Indemnified Party as a result of
the losses, claims, damages, liabilities or judgments referred to in the
immediately preceding paragraph shall be deemed to include, subject to the
limitations set forth above, any legal or other expenses incurred by such QIU
Indemnified Party in connection with investigating or defending any matter for
which indemnity may be sought pursuant to this Section 8. No person guilty of
fraudulent misrepresentation (within the meaning of Section 11(f) of the Act)
shall be entitled to contribution from any person who was not guilty of such
fraudulent misrepresentation.

            (d) The remedies provided for in this Section 8 are not exclusive
and shall not limit any rights or remedies which may otherwise be available to
any QIU Indemnified Party at law or in equity.

            SECTION 9. Conditions of Underwriters' Obligations. The several
obligations of the Underwriters to purchase the Firm Shares under this Agreement
are subject to the satisfaction of each of the following conditions:

            (a) All the representations and warranties of the Company contained
in this Agreement shall be true and correct on the Closing Date with the same
force and effect as if made on and as of the Closing Date.

            (b) If the Company is required to file a Rule 462(b) Registration
Statement after the effectiveness of this Agreement, such Rule 462(b)
Registration Statement shall have become effective by 10:00 P.M., New York City
time, on the date of this Agreement; and no stop order suspending the
effectiveness of the Registration Statement shall have been issued and no
proceedings for that purpose shall have been commenced or shall be pending
before or contemplated by the Commission.

            (c) You shall have received on the Closing Date a certificate dated
the Closing Date, signed by Martin J. Dymek and Bruce D. Nye, in their
capacities as the President and Chief Financial Officer of the Company,
confirming the matters set forth in Sections 6(u), 9(a) and 9(b) and that the
Company has complied with all of the agreements and satisfied all of the
conditions herein contained and required to be complied with or satisfied by the
Company on or prior to the Closing Date.


                                       19

<PAGE>   20

            (d) Since the respective dates as of which information is given in
the Prospectus other than as set forth in the Prospectus (exclusive of any
amendments or supplements thereto subsequent to the date of this Agreement), (i)
there shall not have occurred any change or any development involving a
prospective change in the condition, financial or otherwise, or the earnings,
business, management or operations of the Company and its subsidiaries, taken as
a whole, (ii) there shall not have been any change or any development involving
a prospective change in the capital stock or in the long-term debt of the
Company or any of its subsidiaries and (iii) neither the Company nor any of its
subsidiaries shall have incurred any liability or obligation, direct or
contingent, in each case other than the entry by the Company into the bank
credit agreement contemplated by the Prospectus, the effect of which, in any
such case described in clause 9(d)(i), 9(d)(ii) or 9(d)(iii), in your judgment,
is material and adverse and, in your judgment, makes it impracticable to market
the Shares on the terms and in the manner contemplated in the Prospectus.

            (e) You shall have received on the Closing Date an opinion
(satisfactory to you and counsel for the Underwriters), dated the Closing Date,
of Brobeck, Phleger & Harrison LLP, counsel for the Company, to the effect that:

              (i) each of the Company and S-O Operating Corp. (the "Subsidiary")
            has been duly incorporated, is validly existing as a corporation in
            good standing under the laws of the State of Delaware and has the
            corporate power and authority to carry on its business as described
            in the Prospectus and to own, lease and operate its properties as
            described in the Prospectus;

             (ii) each of the Company and the Subsidiary is duly qualified and
            is in good standing as a foreign corporation authorized to do
            business in each State in the United States in which the nature of
            its business or its ownership or leasing of property requires such
            qualification, except where the failure to be so qualified would not
            have a material adverse effect on the business, financial condition
            or results of operations of the Company and the Subsidiary, taken as
            a whole;

            (iii) all the outstanding shares of capital stock of the Company
            have been duly authorized and validly issued and are nonassessable
            and not subject to any preemptive rights and, to such counsel's
            knowledge, are fully paid;

             (iv) the Shares have been duly authorized and, when issued and
            delivered to the Underwriters against payment therefor as provided
            by this Agreement, will be validly issued, fully paid and
            nonassessable, and the issuance of such Shares will not be subject
            to any preemptive rights;

              (v) all of the outstanding shares of capital stock of the
            Subsidiary have been duly authorized and validly issued are 
            nonassessable, and, 


                                       20

<PAGE>   21

            to such counsel's knowledge, are fully paid and are owned by the
            Company, directly or indirectly through one or more subsidiaries,
            free and clear of any security interest, claim, lien, encumbrance or
            adverse interest of any nature;

            (vi) this Agreement has been duly authorized, executed and
            delivered by the Company;

            (vii) the authorized capital stock of the Company conforms as to
            legal matters to the description thereof contained in the
            Prospectus;

            (viii) the Registration Statement has become effective under the
            Act, and to such counsel's knowledge, no stop order suspending its
            effectiveness has been issued and no proceedings for that purpose
            are pending before or threatened by the Commission;

            (ix) the statements under the captions "Shares Eligible for Future
            Sale" and "Description of Capital Stock" in the Prospectus and Items
            14 and 15 of Part II of the Registration Statement, insofar as such
            statements constitute a summary of the legal matters or documents
            referred to therein, fairly present the information called for with
            respect to such legal matters or documents;

            (x) the execution, delivery and performance at the date of such
            opinion of this Agreement by the Company, the compliance by the
            Company at the date of such opinion with all the provisions hereof
            and the issuance of the Shares will not (A) require any consent,
            approval, authorization or other order of, or qualification with,
            any court or governmental body or agency (except as have been
            obtained or as may be required under the securities or Blue Sky laws
            of the various states), (B) constitute a breach of any of the terms
            or provisions of, or a default (which breach or default has not been
            waived) under, the charter or bylaws of the Company or the
            Subsidiary or any indenture, loan agreement, mortgage, lease or
            other agreement or instrument filed as an exhibit to the
            Registration Statement (assuming the application of the net proceeds
            of the offering as set forth in the Prospectus) or (C) violate any
            applicable California law or any rule or regulation of any
            California governmental body or agency having jurisdiction over the
            Company, the Subsidiary or their respective property or any
            judgment, decree or order which, to such counsel's knowledge, has
            been entered against the Company or the Subsidiary;

            (xi) to such counsel's knowledge, there are no legal or governmental
            proceedings pending or overtly threatened against the Company or the
            Subsidiary or to which any of their respective property is subject
            that are required to be described in the Prospectus and are not so
            described; to such counsel's knowledge, there are no contracts or
            other documents that are required to be described in the
            Registration Statement or the Prospectus or to be filed as exhibits
            to the Registration Statement that are not so described or filed as
            required;


                                       21

<PAGE>   22

            (xii) to such counsel's knowledge, there are no contracts,
            agreements or understandings between the Company and any person
            granting such person the right to require the Company to file a
            registration statement under the Act with respect to any securities
            of the Company or to require the Company to include such securities
            with the Shares registered pursuant to the Registration Statement,
            except as otherwise disclosed in the Registration Statement.

            In addition, such counsel shall state that (A) such counsel believes
that the Registration Statement and the Prospectus (except for financial
statements, including the notes and schedules thereto, and statistical and other
financial data, as to which such counsel expresses no belief), complied as to
form in all material respects with the requirements of the Act and (B) such
counsel confirms that nothing has come to the attention of such counsel that
caused such counsel to believe that (except for financial statements, including
the notes and schedules thereto, and other statistical and financial data, as to
which such counsel expresses no belief) either the Registration Statement or the
Prospectus, as of the effective date of the Registration Statement, contained
any untrue statement of a material fact or omitted to state a material fact
required to be stated therein or necessary to make the statements therein, in
the light of the circumstances under which they were made, not misleading or
that (except for financial statements, schedules and other statistical and
financial data, as to which such counsel expresses no belief) the Prospectus, on
the date of such opinion, contains any untrue statement of a material fact or
omits to state a material fact necessary in order to make the statements
therein, in the light of the circumstances under which they were made, not
misleading.

            The opinion of Brobeck, Phleger & Harrison LLP described in Section
9(e) above shall be rendered to you at the request of the Company and shall so
state therein.

            (f) You shall have received on the Closing Date an opinion, dated
the Closing Date, of Sullivan & Cromwell, counsel for the Underwriters, as to
the matters referred to in Sections 9(e)(iv), 9(e)(vi), 9(e)(ix) (but only with
respect to the statements under the caption "Description of Capital Stock" and
"Underwriting") and 9(e)(ix).

            In giving such opinions with respect to the matters covered by
Section 9(e)(ix) Brobeck, Phleger & Harrison LLP and Sullivan & Cromwell may
state that their opinion and belief are based upon their participation in the
preparation of the Registration Statement and Prospectus and any amendments or
supplements thereto and review and discussion of the contents thereof, but are
without independent check or verification except as specified.

            (g) You shall have received, on each of the date hereof and the
Closing Date, a letter dated the date hereof or the Closing Date, as the case
may be, in form and substance satisfactory to you, from Price Waterhouse LLP,
independent public accountants, containing the information and statements of the
type ordinarily included in accountants'


                                       22
<PAGE>   23

"comfort letters" to Underwriters with respect to the financial statements and
certain financial information contained in the Registration Statement and the
Prospectus.

            (h) The Company shall have delivered to you the agreements specified
in Section 2 hereof which agreements shall be in full force and effect on the
Closing Date.

            (i) The Shares shall have been duly listed for quotation on the
Nasdaq National Market.

            (j) The Company shall not have failed on or prior to the Closing
Date to perform or comply with any of the agreements herein contained and
required to be performed or complied with by the Company on or prior to the
Closing Date.

            The several obligations of the Underwriters to purchase any
Additional Shares hereunder are subject to the delivery to you on the applicable
Option Closing Date of such documents as you may reasonably request with respect
to the good standing of the Company, the due authorization and issuance of such
Additional Shares and other matters related to the issuance of such Additional
Shares.

            SECTION 10. Effectiveness of Agreement and Termination. This
Agreement shall become effective upon the execution and delivery of this
Agreement by the parties hereto.

            This Agreement may be terminated at any time on or prior to the
Closing Date by you by written notice to the Company if any of the following has
occurred: (i) any outbreak or escalation of hostilities or other national or
international calamity or crisis or change in economic conditions or in the
financial markets of the United States or elsewhere that, in your judgment, is
material and adverse and, in your judgment, makes it impracticable to market the
Shares on the terms and in the manner contemplated in the Prospectus, (ii) the
suspension or material limitation of trading in securities or other instruments
on the New York Stock Exchange or the Nasdaq National Market or limitation on
prices for securities or other instruments on any such exchange or the Nasdaq
National Market, (iii) the suspension of trading of any securities of the
Company on any exchange or in the over-the-counter market, (iv) the enactment,
publication, decree or other promulgation of any federal or state statute,
regulation, rule or order of any court or other governmental authority which in
your opinion materially and adversely affects, or will materially and adversely
affect, the business, prospects, financial condition or results of operations of
the Company and its subsidiaries, taken as a whole, (v) the declaration of a
banking moratorium by either federal or New York State authorities or (vi) the
taking of any action by any federal, state or local government or agency in
respect of its monetary or fiscal affairs which in your opinion has a material
adverse effect on the financial markets in the United States.

            If on the Closing Date or on an Option Closing Date, as the case may
be, any one or more of the Underwriters shall fail or refuse to purchase the
Firm Shares or Additional 



                                       23


<PAGE>   24

Shares, as the case may be, which it or they have agreed to purchase hereunder
on such date and the aggregate number of Firm Shares or Additional Shares, as
the case may be, which such defaulting Underwriter or Underwriters, as the case
may be, agreed but failed or refused to purchase is not more than one-tenth of
the total number of Shares to be purchased on such date by all Underwriters,
each non-defaulting Underwriter shall be obligated severally, in the proportion
which the number of Firm Shares set forth opposite its name in Schedule I bears
to the total number of Firm Shares which all the non-defaulting Underwriters, as
the case may be, have agreed to purchase, or in such other proportion as you may
specify, to purchase the Firm Shares or Additional Shares, as the case may be,
which such defaulting Underwriter or Underwriters, as the case may be, agreed
but failed or refused to purchase on such date; provided that in no event shall
the number of Firm Shares or Additional Shares, as the case may be, which any
Underwriter has agreed to purchase pursuant to Section 2 hereof be increased
pursuant to this Section 10 by an amount in excess of one-ninth of such number
of Firm Shares or Additional Shares, as the case may be, without the written
consent of such Underwriter. If on the Closing Date any Underwriter or
Underwriters shall fail or refuse to purchase Firm Shares and the aggregate
number of Firm Shares with respect to which such default occurs is more than
one-tenth of the aggregate number of Firm Shares to be purchased by all
Underwriters and arrangements satisfactory to you and the Company for purchase
of such Firm Shares are not made within 48 hours after such default, this
Agreement will terminate without liability on the part of any non-defaulting
Underwriter and the Company. In any such case which does not result in
termination of this Agreement, either you or the Company shall have the right to
postpone the Closing Date, but in no event for longer than seven days, in order
that the required changes, if any, in the Registration Statement and the
Prospectus or any other documents or arrangements may be effected. If, on an
Option Closing Date, any Underwriter or Underwriters shall fail or refuse to
purchase Additional Shares and the aggregate number of Additional Shares with
respect to which such default occurs is more than one-tenth of the aggregate
number of Additional Shares to be purchased on such date, the non-defaulting
Underwriters shall have the option to (i) terminate their obligation hereunder
to purchase such Additional Shares or (ii) purchase not less than the number of
Additional Shares that such non-defaulting Underwriters would have been
obligated to purchase on such date in the absence of such default. Any action
taken under this paragraph shall not relieve any defaulting Underwriter from
liability in respect of any default of any such Underwriter under this
Agreement.

            SECTION 11. Miscellaneous. Notices given pursuant to any provision
of this Agreement shall be addressed as follows: (i) if to the Company, to
Steri-Oss, Inc., 22895 Eastpark Drive, Yorba Linda, California 92887, Attention:
Chief Executive Officer and Secretary, with a copy to Brobeck, Phleger &
Harrison LLP, 4675 MacArthur Court, Suite 1000, Newport Beach, California 92660,
Attention: Frederic A. Randall, Jr., and (ii) if to any Underwriter or to you,
to you c/o Donaldson, Lufkin & Jenrette Securities Corporation, 277 Park Avenue,
New York, New York 10172, Attention: Syndicate 


                                       24


<PAGE>   25

Department, or in any case to such other address as the person to be notified
may have requested in writing.

            The respective indemnities, contribution agreements,
representations, warranties and other statements of the Company and the several
Underwriters set forth in or made pursuant to this Agreement shall remain
operative and in full force and effect, and will survive delivery of and payment
for the Shares, regardless of (i) any investigation, or statement as to the
results thereof, made by or on behalf of any Underwriter, the officers or
directors of any Underwriter, any person controlling any Underwriter, any QIU
Indemnified Party, the Company, the officers or directors of the Company or any
person controlling the Company, (ii) acceptance of the Shares and payment for
them hereunder and (iii) termination of this Agreement.

            If for any reason the Shares are not delivered by or on behalf of
the Company as provided herein (other than as a result of any termination of
this Agreement pursuant to Section 10), the Company agrees to reimburse the
several Underwriters for all out-of-pocket expenses (including the fees and
disbursements of counsel) incurred by them. Notwithstanding any termination of
this Agreement, the Company shall be liable for all expenses which it has agreed
to pay pursuant to Section 5(i) hereof. The Company also agrees to reimburse the
several Underwriters, their directors and officers and any persons controlling
any of the Underwriters for any and all fees and expenses (including, without
limitation, the fees disbursements of counsel) incurred by them in connection
with enforcing their rights hereunder (including, without limitation, pursuant
to Section 7 hereof).

            Except as otherwise provided, this Agreement has been and is made
solely for the benefit of and shall be binding upon the Company, the
Underwriters, the Underwriters' directors and officers, any controlling persons
referred to herein, QIU Indemnified Parties, the Company's directors and the
Company's officers who sign the Registration Statement and their respective
successors and assigns, all as and to the extent provided in this Agreement, and
no other person shall acquire or have any right under or by virtue of this
Agreement. The term "successors and assigns" shall not include a purchaser of
any of the Shares from any of the several Underwriters merely because of such
purchase.

            This Agreement shall be governed and construed in accordance with
the laws of the State of New York.

            This Agreement may be signed in various counterparts which together
shall constitute one and the same instrument.


                                       25

<PAGE>   26



            Please confirm that the foregoing correctly sets forth the agreement
between the Company and the several Underwriters.



                                          Very truly yours,

                                          STERI-OSS, INC.

                                          By: 
                                              ---------------------------
                                              Kenneth A. Darienzo,
                                              Chairman of the Board and Chief
                                              Executive Officer



DONALDSON, LUFKIN & JENRETTE
  SECURITIES CORPORATION
UBS SECURITIES LLC
FURMAN SELZ LLC

Acting severally on behalf of
  themselves and the several
  Underwriters named in
  Schedule I hereto

By  DONALDSON, LUFKIN & JENRETTE
       SECURITIES CORPORATION

By 
  -------------------------------





                                       26


<PAGE>   27



                                   SCHEDULE I




                                                   Number of Firm Shares
Underwriters                                          to be Purchased
- ------------                                          ---------------
Donaldson, Lufkin & Jenrette Securities
 Corporation

UBS Securities LLC

Furman Selz LLC



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

                                               Total






<PAGE>   28


                                     Annex I


The 1818 Fund II, L.P.
Exeter Venture Lenders, L.P.
Exeter Equity Partners, L.P.
Equitable Life Assurance Society of the United States
Larkspur Capital Corporation
Kenneth A. Darienzo
Kenneth Krueger
Martin J. Dymeck
Bruce D. Nye
Henry Wendt
Douglas E. Rogers
T. Michael Long
Walter W. Grist
Andrew C. Cowan
Frederic M. Seegal


                                       2


<PAGE>   1
                                                                   Exhibit 10.8

*CONFIDENTIAL TREATMENT HAS BEEN REQUESTED FOR CERTAIN REDACTED PROVISIONS OF
THIS AGREEMENT. THE REDACTED PORTIONS ARE IDENTIFIED BY AN ASTERISK WITHIN
BRACKETS. THE CONFIDENTIAL PORTION HAS BEEN FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION.



                                LICENSE AGREEMENT
                                -----------------

         THIS AGREEMENT made and effective this 28th of April 1994, by and
between DENTAL IMAGING ASSOCIATES, INC., a California corporation with a
principal place of business at 3838 Carson Street, Suite 103, Torrance,
California 90503, (LICENSOR) and STERI-OSS, a wholly owned subsidiary of Bausch
& Lomb Incorporated, and a California corporation having a principal place of
business at 28295 East Park Drive, Yorba Linda, California 92687, (LICENSEE).

                                   WITNESSETH
                                   ----------

         WHEREAS, LICENSOR is the exclusive licensee for certain dental
restorative products currently sold as THE DIA ANATOMICAL ABUTMENT SYSTEM(TM),
United States and foreign patents and patent applications related to such
products, related regulatory approvals, and related manufacturing know-how
related to such products;

         WHEREAS, LICENSEE has experience in manufacturing, marketing, selling
and distributing various dental implants and related products; and

         WHEREAS, LICENSOR is desirous of providing LICENSEE with the exclusive
rights to manufacture, use and sell such products; and

         WHEREAS, LICENSEE is desirous of obtaining such exclusive rights.

         NOW, THEREFORE, in consideration of the premises and mutual covenants
contained herein, the parties hereto hereby agree as follows:


                                 1. DEFINITIONS
                                    -----------

         The following terms as used in this Agreement shall have the meanings
set forth below:

         1.1 "AFFILIATE" shall mean any corporation or other entity which,
directly or indirectly, is controlled by or controls, or is under common control
with a party to this


<PAGE>   2


Agreement. "Control" shall mean ownership of at least thirty-five percent (35%)
of the voting shares of such corporation or other business entity.

         1.2 "INFORMATION" shall mean all technology, know-how, trade secrets,
technical data, clinical data, regulatory information and premarket
notifications and approvals, specifications, manufacturing methods or processes,
customer lists, sales data, and related information or experience in the
possession or control of LICENSOR and which LICENSOR has rights to provide to
LICENSEE and useful in the manufacture, use, sale or distribution of PRODUCTS,
as defined below, and all improvements thereto.

         1.3 "INITIAL TERM" shall mean the period beginning from the effective
date of this Agreement and ending on December 31, 1999.

         1.4 "IMPROVEMENTS" shall mean all modifications, changes and
improvements to PRODUCTS, as defined below, which fall within the scope of one
or more claims of a PATENT.

         1.5 "NET SALES" shall mean the sales price of PRODUCTS by LICENSEE and
its AFFILIATES during the applicable accounting period to unrelated third
parties, less the following deductions: [*]. NET SALES shall exclude
complimentary PRODUCTS distributed by LICENSEE as samples to promote the sale of
PRODUCTS and PRODUCTS provided pursuant to Section 4.2. The NET SALES amount for
PRODUCTS sold in combination with non-royalty bearing products at a single price
(such as in a kit) shall be construed as [*]. For example, if the combination
sale price for three products was [*] and the standard list price for each
product sold separately and subsequently combined was [*], then the NET SALES
price shall be [*] less than the standard list price for the royalty bearing
PRODUCT.

         1.6 "PATENTS" shall mean each United States patent and patent
application listed on Exhibit A-1 attached hereto and incorporated herein by
reference, all foreign patents and patent applications listed on Exhibit A-1,
each patent issuing upon a patent application referred to above, and all other
patent applications and patents owned or licensed by LICENSOR which would be
infringed by the manufacture, sale or use of PRODUCT(s). All U.S. and foreign
patent applications directed to IMPROVEMENTS of PRODUCTS shall be included in
PATENTS in accordance with Article 10.

         1.7 "PRODUCTS" shall mean all abutments, healing caps, impression
coping cylinders and screws, and laboratory analogs currently manufactured, sold
or distributed by or for LICENSOR as listed on Exhibit B, attached hereto and
incorporated herein by reference, which are within the scope of any valid claims
of PATENTS and all IMPROVEMENTS subsequently added to Exhibit B as provided for
in this Agreement or by the mutual consent of the parties.


*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS
                                       2

<PAGE>   3



         1.8 "RENEWAL TERM" shall mean a period of five (5) years commencing
after the expiration of the INITIAL TERM.

         1.9 "TRADEMARKS" shall mean the trademarks and trade names and related
applications and registrations thereof, all listed in Exhibit C, attached hereto
and incorporated herein by reference, and any other trademarks or trade names
included and acknowledged in writing by the mutual consent of the parties.

         1.10 Singular, Plural or Possessive. Any of the above-defined words
shall mean singular, plural or possessive and shall be used in the appropriate
form.


                                   2. LICENSE
                                      -------

         2.1 LICENSOR hereby grants to LICENSEE and its AFFILIATES subject to
Section 2.2, the exclusive, worldwide license and right, with the right to grant
sublicenses, under all INFORMATION and PATENTS to make, have made, use, sell and
distribute PRODUCTS. LICENSOR hereby further grants to LICENSEE and its
AFFILIATES subject to Section 2.2, an exclusive, worldwide right to use the
TRADEMARKS, with right to sublicense upon and in connection with the
manufacture, use, sale, distribution and promotion of PRODUCTS.

         2.2 LICENSEE acknowledges that LICENSOR has granted certain rights
relative to the PRODUCTS to [*] as reflected by the correspondence between
LICENSOR and [*] set forth as Exhibit E and has had communications with [*] as
reflected by the correspondence between LICENSOR and [*] attached hereto as
Exhibit F. LICENSOR hereby transfers and assigns its rights under the previous
grants to LICENSEE. LICENSOR's grant under Section 2.1 shall not be construed as
any reservation of right to the exclusive rights granted to LICENSEE.


                                  3. ROYALTIES
                                     ---------

         3.1 Within five (5) business days from the execution of this Agreement,
LICENSEE shall pay LICENSOR a non-refundable license fee of (i) [*], and (ii)
[*] which shall be fully creditable against royalty payments provided in Section
3.2 at a rate of [*] beginning upon the first full fiscal quarter of 1996 from
the effective date of this Agreement. Notwithstanding the above, LICENSEE shall
be entitled to recover the above-paid license fee as part of otherwise proven
damages in the event that LICENSOR has breached any material obligation or
covenant of this Agreement and LICENSEE shall be entitled to be reimbursed for
the balance of the [*] not credited as provided in Section 3.1 if LICENSOR shall
terminate this Agreement.


*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS
                                        3

<PAGE>   4



         3.2 In addition to the royalty fee described in Section 3.1, LICENSEE
shall pay LICENSOR, during the term of this Agreement, an earned royalty payment
on the NET SALES of PRODUCTS at a rate of [*] for the INITIAL TERM and the
RENEWAL TERM(s). As long as there is a United States patent covering the
PRODUCT, royalties will be earned on all sales of such PRODUCT in any country of
the world.

         3.3 LICENSEE's earned royalty payments to LICENSOR shall total at least
the following amounts (annual minimum royalty requirements) for each twelve
(12)-month period described below:


         12-Month Period                           Annual Minimum Royalty
         ---------------                           ----------------------

Fiscal year ending December 31, 1994                        [*]

Fiscal year ending December 31, 1995                        [*]

Fiscal year ending December 31, 1996                        [*]

Fiscal year ending December 31, 1997                        [*]

Fiscal year ending December 31, 1998                        [*]

Fiscal year ending December 31, 1999                        [*]


         3.4 In the event that the actual earned royalty payments on NET SALES
do not meet the annual minimum royalty requirements of Section 3.3, LICENSEE
shall have thirty (30) days from the end of its fourth fiscal quarter of years
1996, 1997, 1998 and 1999 to make an additional payment to LICENSOR to pay the
differential between the earned royalty payment actually paid and the annual
minimum royalty requirement in order to meet such minimum royalty requirement
and retain its exclusive rights as granted herein. If LICENSEE does not meet
such minimum royalty requirement, LICENSEE's exclusive license as provided for
in Section 2.1 shall terminate at the election of, and upon written notice by,
LICENSOR.

         3.5 No royalty shall be due on the sale or transfer of PRODUCTS between
LICENSEE and AFFILIATES and no PRODUCT shall be the subject of more than one
royalty payment to LICENSOR.


                             4. INVENTORY AND SUPPLY
                                --------------------

         4.1 LICENSOR agrees to use its best efforts to assist LICENSEE in
establishing a suitable supply source of PRODUCTS.

         4.2 LICENSEE shall provide PRODUCTS to [*].



*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS
                                        4

<PAGE>   5



                             5. TECHNICAL ASSISTANCE
                                --------------------

         5.1 Upon request, LICENSOR shall furnish to LICENSEE, without
additional cost to LICENSEE except as provided in Section 5.2 below, reasonable
assistance to allow LICENSEE, or its AFFILIATES or agents, to commercially
manufacture, sell and distribute PRODUCTS. Such technical assistance shall
include providing to LICENSEE all relevant INFORMATION in LICENSOR's possession
necessary for the manufacture of each PRODUCT licensed herein.

         5.2 LICENSOR agrees to furnish to LICENSEE such technical personnel of
LICENSOR as LICENSEE may reasonably require for assistance or consultation in
connection with the manufacture of PRODUCTS in accordance with this Paragraph.
[*] shall consult with LICENSEE for [*], provided such consultation is at the
business location of LICENSEE in California which is at 22895 East Park Drive,
Yorba Linda, California 92687. LICENSOR shall also use its best efforts to make
available to LICENSEE [*] to provide additional assistance, provided such time
commitment shall not unreasonably interfere with [*]. LICENSEE agrees to provide
reasonable notice to LICENSOR of when it will require his assistance and
LICENSEE also agrees to pay all reasonable out-of-pocket expenses for travel,
meals and lodging of [*] including reasonable and customary compensation to be
agreed upon for providing lectures and technical assistance.

         5.3 LICENSEE shall pay [*]. LICENSEE's clinicians shall consist of the
group of the following four individuals: [*]. LICENSOR agrees to make available
to LICENSEE [*] which lectures shall be given either at the business location of
LICENSEE or at an outside location at the option of LICENSEE. LICENSEE shall
have the right to designate which of the group of four it prefers to give a
specific lecture and LICENSOR shall use its best efforts to see to it that such
individual is available. The specific individual providing the lecture shall
receive reimbursement of all reasonable and direct out-of-pocket costs for
travel and lodging by LICENSE (if the lecture is provided outside the greater
Los Angeles area) and [*].


                             6. REPORTS AND RECORDS
                                -------------------

         6.1 LICENSEE shall maintain true and complete books of accounts
containing an accurate record of all data necessary for the proper computation
of the earned royalty payments required hereunder. LICENSOR shall have the
right, by a licensed certified public accountant appointed by it and acceptable
to LICENSEE (such acceptance shall not be unreasonably withheld), to examine
such books under terms of confidentiality with LICENSEE. All such books shall be
available for inspection at all reasonable times upon five (5) business days
prior written notice (but not more than once in each calendar year) for the sole
purpose of verifying the accuracy of the reports rendered by LICENSEE. Such
examination shall be made during normal business hours at LICENSEE's principal
place of business and such right shall be limited to books not previously
examined. The fees and expenses of the representatives

*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS

                                        5

<PAGE>   6



performing such examination shall be borne by LICENSOR, unless the royalties due
and owing hereunder to LICENSOR are discovered to have been understated by more
than three percent (3%) over the period since the last such inspection, in which
event the fees and expenses shall be borne by LICENSEE. LICENSEE shall be
promptly notified of any underpayment or overpayment of royalties. Any
underpayment or overpayment shall be paid to the appropriate party within thirty
(30) days from notice of such underpayment or overpayment. All such books and
records shall be preserved for at least three (3) years from the date of the
royalty payment to which they pertain.

         6.2 LICENSEE will submit to LICENSOR written reports for each of
LICENSEE's fiscal quarters accurately identifying worldwide NET SALES in
sufficient form and detail as to enable LICENSOR to determine the royalties due.
Not later than thirty (30) days following each quarter, LICENSEE shall provide
LICENSOR such reports in writing and showing a reasonable summary of all NET
SALES during the preceding quarter. Such report shall include payment to
LICENSOR of the royalties due.

         6.3 Royalty payments on NET SALES which occur outside of the United
States of America shall be calculated in the currency of the transaction
involved. All royalty payments shall be paid in United States of America dollars
converted from local currency at the exchange rate prevailing at Citibank in New
York City, U.S.A. on the last business day of the fiscal quarter to which such
royalty relates.

         6.4 If LICENSEE should sublicense its rights to an AFFILIATE or assign
this Agreement to an AFFILIATE, LICENSOR shall have the same rights and the
AFFILIATE shall have the same obligations as provided for LICENSEE herein.
LICENSEE shall guarantee the royalty payments of such AFFILIATE.


                       7. PATENTS AND PATENT APPLICATIONS
                          -------------------------------

         7.1 LICENSOR shall be responsible for filing, prosecuting and
maintaining PATENTS in the United States. LICENSOR shall be responsible for
filing and prosecuting the foreign patents in the EPO and Canada for PATENTS as
set forth in Items Number 3 and 4 in Exhibit A up to the time of grant. In the
event LICENSEE is desirous of having patents issued in the various European
countries, LICENSEE shall be responsible for paying the grant and translation
fees for issuance of each such foreign patent in each of the sixteen countries
of the EPO where LICENSEE deems it appropriate to have patents issued. LICENSOR
shall be responsible for paying and maintaining the issuance of the patent in
Canada. For any patents or patent application added to this Agreement pursuant
to Section 10.2, the parties shall mutually agree upon allocating the costs
associated for filing, prosecuting and maintaining such patents.


                                        6

<PAGE>   7



                   8. COMPLIANCE WITH GOVERNMENTAL REGULATIONS
                      ----------------------------------------

         8.1 LICENSEE shall use reasonable efforts with the reasonable
assistance, cooperation and consultation of LICENSOR, to obtain and/or file, at
its own cost and in its own name, new or amended regulatory approvals and/or
premarket notifications in order to manufacture, sell, and/or distribute
PRODUCTS throughout the world. LICENSOR shall provide LICENSEE with all
INFORMATION related to regulatory issues in its possession which are applicable
to PRODUCTS.

         8.2 LICENSOR shall be responsible, at its own cost, to correct any
defects relating to existing regulatory approvals or licenses, including but not
limited to all 510K premarket notifications, which related to PRODUCTS.

         8.3 In the event that any governmental regulatory agency should require
any changes in existing regulatory approvals, including 510K approvals, due to
changes in United States laws or regulations, the parties hereto shall equally
share all costs and expenses associated with obtaining such changes, including
new 510K approvals, for existing PRODUCTS. All minimum royalty requirements
provided for in Section 3.3 shall be stayed for the same period in which at
least half of the total number of PRODUCTS are no longer being sold due to such
changes in any approvals or licenses.

         8.4 LICENSOR agrees to provide LICENSEE with all PRODUCT complaints,
including injury or other medical reports, and copies of all regulatory
correspondence with all governmental agencies relating to PRODUCTS.


                           9. COVENANT NOT TO COMPETE
                              -----------------------

         9.1 During the term hereof and provided that neither LICENSEE or its
AFFILIATE are in breach of the terms herein beyond the cure period for same,
LICENSOR shall not associate commercially with or aid and assist any person or
entity for the purpose of developing, manufacturing, selling or distributing
product(s) which directly compete with PRODUCTS, nor shall LICENSOR itself
develop, manufacture, sell or distribute a competitive product(s). The
provisions of this Section 9.1 shall not apply to any new product for which
LICENSEE does not enter into a license agreement with LICENSOR pursuant to the
provisions of Section 10.2 herein below.


                                10. IMPROVEMENTS
                                    ------------

         10.1 All IMPROVEMENTS to PRODUCTS that are developed, owned, or
acquired (with the right to license) by LICENSOR shall be promptly identified to
LICENSEE. LICENSEE shall have the right, at its sole election, to include such
IMPROVEMENTS in PRODUCTS at the then current royalty rate. Upon request of
LICENSEE, LICENSOR shall

                                        7

<PAGE>   8



promptly provide all relevant information relating to such IMPROVEMENTS to
LICENSEE including providing technical assistance and regulatory assistance to
LICENSEE as provided for in Article 5.

         10.2 LICENSOR shall promptly notify LICENSEE in writing whenever
LICENSOR shall have developed new products, however, [*] shall have the right to
perform preliminary studies and file for a United States patent application on
the new product at his expense before LICENSOR is required to disclose the new
product to LICENSEE. LICENSEE shall have ninety (90) days from the date of such
notice to inform LICENSOR of its desire to license such product under reasonable
terms and conditions to be mutually agreed upon. If LICENSEE and LICENSOR are
unable to agree on suitable terms and conditions for such license within ninety
(90) days from the end of such first ninety-day period, LICENSOR shall be free
to negotiate with third parties. However, prior to executing a license with any
third party on terms more favorable than those last offered to LICENSEE for such
products, LICENSEE shall have the right to license such Products under the same
terms and conditions to the terms and conditions LICENSOR would have granted to
such third party. All disclosures of new information and products under this
Section 10.2 shall be under suitable terms of confidentiality and a separate
non-disclosure agreement shall be executed by the parties for each such new
product.

         10.3 Exhibit A-2 is a list of pending patent applications on current
new products which LICENSOR is providing to LICENSEE for review. With respect to
the patent applications listed on Exhibit A-2 only, LICENSEE shall have the
earlier of ninety (90) days from the issuance of the United States patent or one
hundred fifty (150) days from the execution of this Agreement to inform LICENSOR
of its desire to include such patent applications or patents in the license
granted herein with running royalty payments as provided for in Section 3.2. [*]
Upon inclusion of the patent applications listed on Exhibit A-2, all products
sold by LICENSEE which are within the scope of the patent applications listed on
Exhibit A-2 shall be construed as PRODUCTS and such patent applications shall be
construed as PATENTS in accordance with the terms and conditions of this
Agreement.


                                 11. TRADEMARKS
                                     ----------

         11.1 LICENSOR shall, at its sole expense, register, maintain, and
protect the validity of the TRADEMARKS for PRODUCTS. LICENSEE, subject to being
reimbursed for its out-of-pocket expenses, agrees to cooperate fully in good
faith with LICENSOR for the purpose of securing, reserving, and protecting
LICENSOR's rights in the TRADEMARKS.

         11.2 LICENSEE acknowledges that its use of the TRADEMARKS during the
term of this Agreement shall inure to the benefit of LICENSOR. LICENSOR
acknowledges that LICENSEE has the exclusive license to use the TRADEMARKS,
subject to the terms of this

*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS
                                        8

<PAGE>   9



Agreement, and LICENSOR shall not use any of the TRADEMARKS in connection with
or association with any products.

         11.3 All artwork, designs (excluding PRODUCT designs), promotional
materials and the like or any reproduction thereof created by LICENSEE, for use
in conjunction with the PRODUCTS pursuant to this Agreement shall be and remain
the property of LICENSEE.

         11.4 Nothing herein shall require LICENSEE to use the TRADEMARKS in
association with the PRODUCTS nor prevent LICENSEE from using other marks in
association with the PRODUCTS should LICENSEE, at its sole option, determine to
do so. In the event that LICENSEE should select marks other than the TRADEMARKS
to use in connection with the PRODUCTS, all right and title in said trademarks
shall inure to LICENSEE.

         11.5 LICENSOR shall have the right to inspect manufacturing facilities
of LICENSEE once a year upon ten (10) business days notice to insure that
LICENSEE complies with reasonable quality control standards imposed by LICENSOR
upon products distributed bearing TRADEMARKS. If these quality control standards
are not complied with, LICENSOR has the right to terminate the license as
provided for in Section 15.3 below. Such quality standards shall be provided to
LICENSEE within ten (10) days of the execution of this Agreement.


                                 12. WARRANTIES
                                     ----------

         12.1 LICENSOR hereby represents and warrants to LICENSEE:

              12.1.1 That it is the sole and exclusive licensee of all right,
title and interest in all INFORMATION, PATENTS, TRADEMARKS and regulatory
licenses, approvals and premarket notifications free and clear of any
encumbrances including any encumbrances or, to the best of its knowledge, any
claims by [*], or its AFFILIATE or successor [*], and that, to the best of its
knowledge and belief, such PATENTS and TRADEMARKS are valid and enforceable.

              12.1.2 That Exhibits A-1 and C are a complete and accurate listing
of all PATENTS and TRADEMARKS owned or controlled by LICENSOR on the date hereof
related to PRODUCTS and that Exhibit D, attached hereto, is an accurate listing
of all current customers of PRODUCTS and the sale history of PRODUCTS.

              12.1.3 That there are no proceedings pending or threatened which
challenge the validity, enforceability, registration or use of PATENTS,
TRADEMARKS or regulatory licenses, approvals and premarket notifications.


*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS
                                        9

<PAGE>   10



              12.1.4 That, to the best of its knowledge and belief, the
manufacture, use or sale of PRODUCTS will not infringe any patent, trademark, or
other proprietary rights of any third party.

              12.1.5 That LICENSOR currently has entered into no agreements,
transactions or arrangements, except with respect to Japan and Italy (which
relationships have been fully disclosed to LICENSEE by LICENSOR), which would
limit or impair the rights granted to or its obligations to LICENSEE herein.

              12.1.6 That, to the best of LICENSOR's knowledge and belief, the
PRODUCTS are safe and effective when used as intended.

              12.1.7 That LICENSOR has obtained all regulatory approvals,
licenses, and findings of substantial equivalence resulting from premarket
notifications, necessary to market, sell and distribute PRODUCTS.

         12.2 With regard to the above representations and warranties, LICENSEE
acknowledges receipt of certain correspondence between LICENSOR and [*] and
between LICENSOR and [*], as attached hereto as Exhibit G.

         12.3 LICENSEE hereby represents and warrants to LICENSOR:

              12.3.1 That it has the full authority enter into this Agreement.

              12.3.2 That it has entered into no agreements, transactions or
arrangements that will limit or impair its ability to comply with its
obligations to LICENSOR herein.

              12.3.3 During the term hereof and any renewals, LICENSEE and its
AFFILIATES will actively promote, market, sell and distribute the PRODUCTS in
accordance with reasonable commercial efforts substantially equivalent to those
efforts LICENSEE and its AFFILIATES use for their comparable products.


                               13. INDEMNIFICATION
                                   ---------------

         13.1 Each party shall indemnify and hold the other party harmless from
and against any other loss, liability or expense, including reasonable
attorneys' fees, arising out of or resulting from any demand, suit or claim
based on a breach or alleged breach of any of the parties obligations under this
Agreement; provided, however, that no settlement by a party of any claim which
would give rise to liability on the part of the other party shall be made
without the prior written consent of the other party, which consent shall not be
unreasonably withheld.

*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS
                                       10

<PAGE>   11



The other party shall communicate its decision with respect to any proposed
settlement within fourteen (14) days of the date it receives the request for its
consent.

         13.2 LICENSOR acknowledges that any past relationships with [*]
relating to PRODUCTS has been terminated, as set forth in Exhibit H and LICENSEE
has not in any way affected LICENSOR's relationship with [*]. LICENSOR shall
indemnify and hold harmless LICENSEE from any loss, liability or expense,
including reasonable attorney fees, arising out of a claim made by [*] against
LICENSEE relating to its previous relationship with LICENSOR regarding PRODUCTS.


                                14. INFRINGEMENT
                                    ------------

         14.1 In the event that either party shall learn of an infringement of
any PATENT or TRADEMARK (including any act of unfair competition), that party
shall call the other party's attention thereto in writing and shall provide such
other party with reasonable evidence of such infringement. Both parties shall
use their best efforts in cooperation with each other to terminate such
infringement without litigation. If the efforts of the parties are not
successful in abating the infringement within sixty (60) days after the
infringer has been formally notified of the infringement, LICENSEE shall have
the right to:

              14.1.1 Commence suit on LICENSEE's own account for infringement of
its exclusive rights, subject to LICENSOR's right to fully participate in such
suit, at its own cost, in order to protect its rights;

              14.1.2 Join with LICENSOR in such suit if LICENSOR brings suit
pursuant to Section 14.2 below or;

              14.1.3 Refuse to bring such suit; and LICENSEE shall give notice
in writing to LICENSOR within thirty (30) days after said sixty (60) day period
of Section 14.1.

         14.2 LICENSOR may bring suit for PATENT or TRADEMARK infringement on
its own account, if LICENSEE elects not to commence or join in any suit.

         14.3 Such legal action as is decided upon shall be at the expense of
the party bringing suit, and all recoveries recovered thereby shall belong to
such party, provided, however, that legal action brought jointly by LICENSOR and
LICENSEE and fully participated in by both shall be at the joint expense of the
parties, and all recoveries up to the amount of such expense, shall be shared
jointly by them in proportion to the share of expense paid by each party, and in
the event such recoveries include damages or royalties in excess of expenses,
the amount in excess of expenses shall be shared by the parties on a
proportional basis as to their actual losses (for LICENSEE, lost gross profit;
for LICENSOR, lost royalties).


*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS
                                       11

<PAGE>   12



         14.4 Each party agrees to cooperate, in all reasonable respects as
requested by the other party in litigation proceedings instituted hereunder and,
upon request of the party bringing suit, the other party shall make available to
the party bringing suit all relevant records, papers, information, samples,
specimens, and the like which may be relevant and in its possession. The party
bringing suit and incurring the majority of the associated costs shall have the
right to control such litigation.

         14.5 In the event the making, using or selling of PRODUCTS is
determined by a court of competent jurisdiction to infringe one or more claims
of a patent(s) owned by a third party, no royalty payments shall be due LICENSOR
from the date such lawsuit is filed with respect to NET SALES in the territory
where such third party's patent rights are applicable. All royalty payments
shall be placed in an interest-bearing escrow account from the date that the
lawsuit is filed and maintained therein until final judgment. Provided, however,
that if such infringement results in a license to LICENSEE which enables
LICENSEE to continue making, using, or selling such PRODUCT in such part of the
territory, then the royalty payments due to LICENSOR with respect to NET SALES
in such territory following the date such lawsuit is filed or such settlement is
reached shall be reduced by the damages and/or royalty payments paid or to be
paid to such third party and the royalty payments to LICENSOR shall commence
only after the full recovery by LICENSEE of its reasonable costs and expenses in
defending such suit. In no event shall LICENSOR's earned royalty be reduced to
less than [*] due to earned royalty payments made to third parties by LICENSEE.

         Should LICENSEE, be required to make additional payments to a third
party under this Section 14.5, the minimum royalty requirements provided for in
section 3.3 shall not longer apply.


                            15. TERM AND TERMINATION
                                --------------------

   
         15.1 This Agreement shall become effective as of the date first written
above, and shall continue until December 31, 1999, (INITIAL TERM), unless sooner
terminated as provided for under this Agreement. Thereafter, the term shall be
renewed for an additional five (5)-year term (RENEWAL TERM) provided that
LICENSEE has made total cumulative payments of at least $700,000 during the
INITIAL TERM. Upon expiration of the RENEWAL TERM, the term shall be renewed
until the last to expire United States PATENT (either the term of such patent
has expired or the relevant claims have been held invalid by a court of
competent jurisdiction) which has claims covering such PRODUCT provided that
LICENSEE has made total cumulative payments to LICENSOR of at least $1,200,000.
Upon expiration, LICENSEE's license herein shall be fully paid and irrevocable,
however, any unpaid but accrued royalties shall still be due and payable to
LICENSOR.
    

         15.2 LICENSEE may terminate this Agreement by giving ninety (90) days
prior written notice to LICENSOR.


*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS
                                       12

<PAGE>   13



         15.3 Either party may terminate this Agreement by notice to the other
party in the event of a material breach by such other party of its obligations
hereunder, which breach such other party has failed to cure within thirty (30)
days, in the case of any breach in the payment of amounts required hereunder, or
sixty (60) days, in the case of any other breach, after notice thereof.

         15.4 The following rights and obligations survive any termination of
this Agreement to the degree necessary to permit their complete fulfillment or
discharge:

              15.4.1 LICENSOR's rights to receive or recover, and LICENSEE's
obligations to provide reports as specified in Article 5 hereof and to pay
royalties accrued or accruable for payment at the time of any termination.

              15.4.2 LICENSEE's obligation to maintain records as provided in
Article 5 hereof and LICENSOR's right to conduct a final audit thereof.

              15.4.3 LICENSEE's right to complete the sale or distribution of
all PRODUCTS in inventory or in the process of being manufactured including the
right to sell or distribute any components of PRODUCTS to minimize its losses,
subject to LICENSEE's payments of royalties to LICENSOR as provided for herein,
provided, however, LICENSOR shall have the right to purchase all of such
PRODUCTS and inventory or in the process of being manufactured (collectively,
the "Remaining Inventory") under terms consistent with those terms then provided
by LICENSEE to its sub-licensees or customers for similar products. Within
twenty (20) days of any such termination, LICENSEE shall advise LICENSOR of the
amount of such Remaining Inventory, as well as the terms of purchase of same,
and LICENSOR shall have ten (10) days to advise LICENSEE of its intentions with
regard to the purchase of such Remaining Inventory. To the extent LICENSOR
elects to purchase such Remaining Inventory by notice to LICENSEE within such
time period, LICENSEE shall not have the right to sell or distribute same but
shall sell such Remaining Inventory to LICENSOR (such sales shall be non-royalty
bearing); to the extent LICENSOR does not so elect to purchase such Remaining
Inventory, LICENSOR shall have the right to sell and/or distribute same.

              15.4.4 Any cause of action or claim of either party accrued
because of any breach or default by the other party.

         15.5 Upon termination of this Agreement, LICENSEE agrees to return to
LICENSOR all prototype specimens, slides, blueprints and other materials
provided by LICENSOR to LICENSEE. LICENSEE shall return such material to
LICENSOR no later than ninety (90) days after the termination of this Agreement.

         15.6 Upon termination and except as expressly set forth in this Section
15.4, LICENSEE acknowledges that neither it nor any of its AFFILIATES shall have
any rights whatsoever with regard to the INFORMATION, PATENTS, and/or the
TRADEMARKS, or to

*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS
                                       13

<PAGE>   14



the right to manufacture, sell or distribute PRODUCTS, and that all such rights
shall automatically revert to and be the exclusive property of LICENSOR.


                                16. FORCE MAJEURE
                                    -------------

         16.1 No failure or omission by either party in the performance of any
obligation under this Agreement shall be deemed a breach of this Agreement or
create any liability if the same shall arise from any cause or causes beyond the
control of the party, including but not limited to the following: acts of God,
acts or omissions of any government or agency thereof, compliance with rules,
regulations or orders of any governmental authority, fire, storm, flood,
earthquake, accident, acts of the public enemy, war, rebellion, insurrection,
riot, sabotage, invasion, quarantine or failures or delays in transportation.


                               17. CONFIDENTIALITY
                                   ---------------

         17.1 Each party agrees that during the term of this Agreement and for a
period of three (3) years from the termination date of this Agreement, that it
will not disclose, publish, utilize for any purpose outside of that contemplated
by this Agreement or otherwise make known to any third party, except to
consultants and third party vendors under similar terms and conditions to those
herein, any confidential information it learns about or from the other party
through its relationship hereunder and including all INFORMATION of LICENSOR;
provided, however, that neither party shall be obligated to maintain in
confidence or not use information which:

              17.1.1 Is, or subsequently may become available to the public
through no fault of the receiving party;

              17.1.2 The receiving party can show was previously known to it at
the time of receipt;

              17.1.3 May subsequently be obtained lawfully from a third party
who has obtained the information through no fault of the receiving party;

              17.1.4 Is independently developed;

              17.1.5 Is disclosed to a third party without a corresponding
obligation of confidence; or

              17.1.6 Is in the opinion of the receiving party's legal counsel
required to be disclosed to a government agency or by operation of law provided,
however, that the receiving party takes such action as is available to preserve
the confidentiality of such

                                       14

<PAGE>   15



information and to protect the same from disclosure under the Freedom of
Information Act or similar federal, state, or local disclosure laws, rules, or
regulations.

         17.2 Neither party shall disclose to the public or to a governmental
agency the terms of this Agreement without the prior written consent of the
other party which shall not be unreasonably withheld.


                                   18. NOTICES
                                       -------

         18.1 All notices, approvals, requests, demand and the like which are
required or permitted to be given under the terms hereof must be in writing.
They shall be given by mailing the same, postage prepaid by certified or
registered mail.

              18.1.1 Those to be sent to LICENSEE shall be addressed to:

                     President
                     STERI-OSS
                     28295 East Park Drive
                     Yorba Linda, California 92687

              With a copy to:

                     Vice President & General Counsel
                     BAUSCH & LOMB INCORPORATED
                     One Chase Square
                     P.O. Box 54
                     Rochester, New York 14601-0054

or such other address as LICENSEE shall designate from time to time.

              18.1.2 Those to be sent to LICENSOR shall be addressed to:

                     President
                     DENTAL IMAGING ASSOCIATES, INC.
                     c/o
                         ----------------------------
                     --------------------------------
                     Torrance, California 90503


                                       15

<PAGE>   16



              With a copy to:

                     Michael Grayson, Esq.
                     Lewitt, Hackman, Hoefflin, Shapiro,
                     Marshall, Harlan & Grayson
                     106633 Ventura Boulevard
                     Encino, California 91426-1870

or such other address as LICENSOR shall designate from time to time.

         18.2 Each notice so mailed as herein above provided shall be deemed 
to have been given on the date of actual receipt.


                                   19. GENERAL
                                       -------

         19.1 This Agreement contains the entire and only agreement between the
parties and supersedes all preexisting agreements, obligations, or claims
between them or their predecessors in interest relating to the subject matter
contained herein. Any representation, promise, condition, or obligation in
connection with such subject matter which is not incorporated in this Agreement
shall not be binding upon either party. No modification of this Agreement shall
be binding on the parties unless made in writing and signed on behalf of a duly
authorized representative of each party hereto.

         19.2 Nothing in this Agreement shall be construed so as to require the
commission of any act contrary to law, and wherever there is any conflict
between any provision of this Agreement and any statute, law, ordinance or
treaty concerning the legal rights of the parties to the contract, the latter
shall prevail, but in such event the affected provisions of this Agreement shall
be curtailed and limited only to the extent necessary to bring it within the
applicable legal requirements.

         19.3 Nothing in this Agreement shall be construed to make either party
hereto the agent, representative or partner of or a joint venturer with the
other party and neither party shall so hold itself out, nor shall either party
be liable or bound by any act or omission of the other party except as may be
expressly stated herein.

         19.4 Except as is expressly stated herein, neither party grants to the
other party any other right or license under any of its patents, trademarks,
copyrights or trade secrets.

         19.5 The Article headings of this Agreement are strictly for the
convenience of the parties and shall not be used in any way to restrict the
meaning or interpretation of the substantive language of this Agreement.


                                       16

<PAGE>   17



         19.6 This Agreement and its effect are subject to and shall be
construed and enforced in accordance with the laws of the State of California.

         IN WITNESS WHEREOF, the parties have caused this Agreement to be signed
in duplicate originals by their duly authorized representatives.

                                     DENTAL IMAGING ASSOCIATES, INC.
                                     (LICENSOR)


                                     By:
                                             ----------------------------------
                                     Title:
                                             ----------------------------------


                                     STERI-OSS
                                     (LICENSEE)


                                     By:
                                             ----------------------------------
                                     Title:
                                             ----------------------------------


*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS
                                       17

<PAGE>   18





         I, [*] as licensor of PATENTS to LICENSOR, agree to be personally bound
by the obligations of LICENSOR in Sections 5, 9, 10 and 17 of this Agreement and
to use my best efforts to place LICENSOR, as a shareholder therein, in a
position to meet its obligations to LICENSEE as provided for in this Agreement.



                                             ----------------------------------
                                             [*]


*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS
                                       18

<PAGE>   19



                                   EXHIBIT A-1
                                   -----------

                                     PATENTS

               [* LIST OF PATENTS AND PATENT APPLICATIONS OMITTED]







*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS
                                       19

<PAGE>   20


                                   EXHIBIT A-2
                                   -----------

                                  NEW PRODUCTS

             [* LIST OF NEW PRODUCTS AND RELATED PATENTS AND PATENT
                             APPLICATIONS OMITTED]





*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS
                                       20

<PAGE>   21



                                    EXHIBIT B
                                    ---------

                                    PRODUCTS

Healing Caps               HC045
(6)                        HC046
                           HC047
                           HC145
                           HC146
                           HC147

Anabomic Abutment
(9)                        AA0A
                           AA0B
                           AA0C
                           AA5A
                           AA5B
                           AA5C
                           AA1A
                           AA1B
                           AA1C
to include fixation screw

Pre-Angled Abutment
                           PAA515A
                           PAA515B
                           PAA515C
                           PAA525A
                           PAA525B
                           PAA525C
to include fixation screw

Impression Coping and Screw
                           ICSS (short)
                           ICSS (long)

Implant Coping Friction Driver
                           DTIS

Implant Laboratory Analog
                           ILRT

See attached description

                                       21

<PAGE>   22



                                   EXHIBIT B-1
                                   -----------

               [* LIST OF PATENTS AND PATENT APPLICATIONS OMITTED]







*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS
                                       22

<PAGE>   23



                                    EXHIBIT C
                                    ---------

                           TRADEMARKS AND TRADE NAMES

DIA(TM)

The DIA ANATOMIC ABUTMENT SYSTEM(TM)








                                       23

<PAGE>   24



                                    EXHIBIT D
                                    ---------

                                DIA CUSTOMER LIST

                               [*32 pages omitted]







*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS
                                       24

<PAGE>   25



                          ADDENDUM TO LICENSE AGREEMENT
                          -----------------------------

         THIS AGREEMENT made and effective this 11th day of April, 1995, by and
between DENTAL IMAGING ASSOCIATES, INC., a California corporation with a
principal place of business at 9001 Wilshire Boulevard, Suite 205, Beverly
Hills, California 90211 ("LICENSOR") and STERI-OSS INC., a wholly owned
subsidiary of Bausch & Lomb Incorporated, and a California corporation having a
principal place of business at 22895 East Park Drive, Yorba Linda, California
92687 ("LICENSEE").

                               W I T N E S S E T H
                               -------------------

         WHEREAS, LICENSOR and LICENSEE entered into a License Agreement
effective April 28, 1994 (the "1994 AGREEMENT") wherein LICENSOR granted
LICENSEE exclusive rights to manufacture, use, and sell certain dental
restorative products known as THE DIA ANATOMICAL ABUTMENT SYSTEM according to
the terms and conditions therein set forth;

         WHEREAS, Section 10.3 of the 1994 AGREEMENT provided LICENSEE with
rights: (a) to include products which are within the scope of the patent
properties listed in Exhibit A-2 of the that AGREEMENT as "PRODUCTS" (those
products being known as "THE NEW PRODUCTS") and (b) to include the patent
properties specified in Exhibit A-2 of the 1994 AGREEMENT as "PATENTS"; and

         WHEREAS, LICENSEE has notified LICENSOR of its desire to acquire the
rights described above and the parties have negotiated the consideration and the
terms related to LICENSEE's acquisition of such rights;

         NOW, THEREFORE, in consideration of the premises and mutual covenants
contained herein, the parties hereto hereby agree as follows:

         1. The term "PATENTS" as used in the 1994 AGREEMENT shall hereinafter
include each United States patent application listed on Exhibit A-2 of the 1994
AGREEMENT and each patent issuing upon such patent applications; each non-United
States patent and patent application corresponding to the foregoing; and each
divisional, reissue, continuation, renewal, and extension of the foregoing.

         2. LICENSOR represents and warrants that Exhibit B-1 attached hereto is
a complete and accurate listing of all patent properties included within PATENTS
as of the effective date of this Addendum and that Exhibit B-2 is a complete and
accurate listing of all products to be added under this Addendum.

         3. The term "PRODUCTS" as used in the 1994 AGREEMENT shall mean all
products within the scope of any valid claim of PATENTS.


                                        1

<PAGE>   26



         4. As reimbursement for its development and patent costs, LICENSEE
shall pay LICENSOR the following: [*]. LICENSEE agrees to use reasonable, good
faith efforts to overcome any regulatory issues that may arise and to use
reasonable, good faith efforts to resolve any assertion that the making, using,
or selling of PRODUCTS infringe one or more claims of a patent owned by a third
party. LICENSOR agrees to provide LICENSEE with reasonable assistance,
cooperation and consultation in overcoming any regulatory issues that may arise
and in resolving any assertion that the making, using, or selling of PRODUCTS
infringe one or more claims of a patent owned by a third party. Nothing in this
Paragraph 4 shall limit in any way LICENSEE's rights under the 1994 AGREEMENT,
especially Section 14.5 of that AGREEMENT.

         5. Commencing with the first sale of a NEW PRODUCT, the table set forth
in Section 3.3 of the 1994 AGREEMENT will be replaced with the following:


         12-Month Period                           Annual Minimum Royalty
         ---------------                           ----------------------

Fiscal Year ending Dec. 31, 1994                             [*]

Fiscal Year ending Dec. 31, 1995                             [*]

Fiscal Year ending Dec. 31, 1996                             [*]

Fiscal Year ending Dec. 31, 1997                             [*]

Fiscal Year ending Dec. 31, 1998                             [*]

Fiscal Year ending Dec. 31, 1999                             [*]


         6. LICENSEE agrees to pay LICENSOR's clinicians, [*] provided under
Section 5.3 of the 1994 AGREEMENT during the 12-month period commencing with the
effective date of this Addendum. This will be renewable on an annual basis at
the sole discretion of the LICENSEE during the initial term of the 1994
AGREEMENT. [*].

         7. The parties agree that new product ideas should be presented to
LICENSEE before LICENSOR or its clinicians incur significant product development
costs. Accordingly, Section 10.2 of the 1994 AGREEMENT is amended to read as
follows:

         Whenever LICENSOR conceives a new product, LICENSOR shall notify
         LICENSEE of same in writing; this notification shall follow LICENSOR
         having filed a patent application covering such new product, [*].
         LICENSEE shall have ninety (90) days from the date of such notice to
         inform LICENSOR of its desire to license such product under reasonable
         terms and conditions to be mutually agreed upon, such terms and
         conditions to include, without limitation, reimbursement of said
         development and patent costs and such other sums as the parties shall
         negotiate. If LICENSEE and LICENSOR are unable to agree on suitable
         terms and conditions for such license within ninety (90) days from the
         end of such first ninety (90)-day period, LICENSOR shall be free to
         negotiate with

*CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED FOR REDACTED PORTIONS
                                        2

<PAGE>   27



         third parties. However, prior to executing a license with any third
         party on terms more favorable than those last offered to LICENSEE for
         such products, LICENSEE shall have the right to license such Products
         under the same terms and conditions as the terms and conditions
         LICENSOR would have granted to such third party. All disclosures of new
         information and products under this Section 10.2 shall be under
         suitable terms of confidentiality and a separate non-disclosure
         agreement shall be executed by the parties for each such new product.

         8. If LICENSEE grants a sublicense under Section 2.1 of the 1994
AGREEMENT to a third party (any party other than one of LICENSEE's AFFILIATES as
defined in Paragraph 1.1 of the 1994 AGREEMENT) (said party referred to herein
as a "Third PARTY"), [*] relative to the PRODUCTS shall be payable by LICENSEE
to LICENSOR. Such payments shall be made quarterly with an accounting
substantially equivalent to that provided to LICENSOR relative to LICENSEE's
direct sale of PRODUCTS. Royalties and proceeds shall include sums received by
LICENSEE from the Third Party, less LICENSEE's direct, out-of-pocket expenses
solely attributable to the Third Party sublicense or grant. It is understood
that sale of PRODUCTS shall not constitute a sublicense within the meaning of
this Paragraph 8.

         9. The terms of the 1994 AGREEMENT shall continue in full force and
effect except as modified herein. If there is any inconsistency between the
terms of the 1994 AGREEMENT and the terms of this Addendum, the terms of this
Addendum shall control.



                                        3

<PAGE>   28



         IN WITNESS WHEREOF, the parties have caused this Addendum to be signed
in duplicate originals by their duly authorized representatives.

                               DENTAL IMAGING ASSOCIATES, INC. (LICENSOR)


                               By:
                                        ---------------------------------------
                               Title:
                                        ---------------------------------------
                               Date:
                                        ---------------------------------------


                               STERI-OSS INC.
                               (LICENSEE)

                               By:
                                        ---------------------------------------
                               Title:
                                        ---------------------------------------
                               Date:
                                        ---------------------------------------



                                        4


<PAGE>   1
 
                                                                    EXHIBIT 23.1
 
                       CONSENT OF INDEPENDENT ACCOUNTANTS
 
     We hereby consent to the use in the Prospectus constituting part of this
Registration Statement on Form S-1 of our report dated October 3, 1997, relating
to the consolidated financial statements of Steri-Oss, Inc., which appear in
such Prospectus. We also consent to the application of such report to the
Financial Statement Schedule for the period from November 16, 1996 through
December 31, 1996 and the six month period ended June 30, 1997 listed under Item
16(b) of this Registration Statement when such schedule is read in conjunction
with the consolidated financial statements referred to in our report. The audits
referred to in such report also included this schedule. We also consent to the
reference to us under the heading "Experts" in such Prospectus.
 
                                          PRICE WATERHOUSE LLP
 
Costa Mesa, California
   
October 21, 1997
    

<PAGE>   1
 
                                                                    EXHIBIT 23.2
 
                       CONSENT OF INDEPENDENT ACCOUNTANTS
 
     We hereby consent to the use in the Prospectus constituting part of this
Registration Statement on Form S-1 of our report dated October 3, 1997, relating
to the financial statements of Steri-Oss, Inc., which appear in such Prospectus.
We also consent to the application of such report to the Financial Statement
Schedule for the years ended December 31, 1994 and 1995, and for the period from
January 1, 1996 through November 15, 1996 listed under Item 16(b) of this
Registration Statement when such schedule is read in conjunction with the
financial statements referred to in our report. The audits referred to in such
report also included this schedule. We also consent to the reference to us under
the heading "Experts" in such Prospectus.
 
                                          PRICE WATERHOUSE LLP
 
Costa Mesa, California
   
October 21, 1997
    


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