UNITED DENTAL CARE INC /DE/
8-K, 1998-03-17
HOSPITAL & MEDICAL SERVICE PLANS
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<PAGE>   1
 
================================================================================
 
                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
 
                                    FORM 8-K
 
                                 CURRENT REPORT
 
                       PURSUANT TO SECTION 13 OR 15(d) OF
                      THE SECURITIES EXCHANGE ACT OF 1934
 
                                 MARCH 10, 1998
                Date of Report (Date of earliest event reported)
 
                            UNITED DENTAL CARE, INC.
             (Exact name of registrant as specified in its charter)
 
<TABLE>
<S>                             <C>                             <C>
           DELAWARE                         0-26688                       75-2309712
 (State or other jurisdiction      (Commission File Number)              (IRS Employer
       of incorporation)                                              Identification No.)
</TABLE>
 
                       13601 PRESTON ROAD, SUITE 500 EAST
                              DALLAS, TEXAS 75240
             (Address of principal executive offices and zip code)
 
                                 (972) 458-7474
              (Registrant's telephone number, including area code)
 
================================================================================
<PAGE>   2
 
ITEM 5. OTHER EVENTS
 
AGREEMENT AND PLAN OF MERGER WITH PROTECTIVE LIFE CORPORATION
 
     On March 10, 1998, the Registrant entered into an Agreement and Plan of
Merger (the "Merger Agreement") with Protective Life Corporation, a Delaware
corporation ("Protective"), and PLC Merger Subsidiary Corporation, a Delaware
corporation and wholly-owned subsidiary of Protective ("MergerSub"), pursuant to
which the Registrant would be merged with and into MergerSub (the "Merger") and
MergerSub would be the surviving corporation.
 
     In the Merger, the stockholders of the Registrant would receive for each
share of outstanding common stock of the Registrant ("Registrant Common Stock")
a combination of $9.31 in cash and 0.2893 shares of common stock, $0.50 par
value per share, of Protective ("Protective Common Stock") (after giving effect
to the two-for-one stock split announced by Protective on March 2, 1998 and
payable on April 1, 1998 to the holders of Protective Common Stock). The Merger
Agreement provides that either the Registrant (subject to Protective's right to
increase the merger consideration) or Protective may terminate the Merger
Agreement if the price of Protective Common Stock is below $27.50 per share and
Protective may terminate if the price of Protective Common Stock is above $39.50
per share (after adjustment for Protective's stock split).
 
     Protective provides financial services through the production, distribution
and administration of insurance and investment products throughout the United
States and Hong Kong and has annual revenues of approximately $1.1 billion and
assets of $10.5 billion. Protective has over 500,000 members in its dental
managed care network and provides indemnity insurance to an additional 600,000
customers. Protective's dental managed care products are licensed in 13 states
with its primary marketing territories being Florida, Georgia, Tennessee and
Oklahoma.
 
     The Merger is subject to approval by the stockholders of the Registrant,
the applicable requirements of the Hart-Scott-Rodino Antitrust Improvements Act
of 1976, as amended, regulatory approvals, and other customary closing
conditions, so there can be no assurance as to whether or when the Merger will
be completed.
 
ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS
 
     (c) Exhibits
 
<TABLE>
<CAPTION>
        EXHIBIT
         NUMBER                                  DESCRIPTION
        -------                                  -----------
<C>                      <S>
           2.1           -- Agreement and Plan of Merger, dated as of March 10, 1998
                            as amended as of March 17, 1998, by and among Protective
                            Life Corporation, PLC Merger Subsidiary Corporation, and
                            the Registrant (filed herewith).
           2.2           -- Stockholder Agreement, dated as of March 10, 1998,
                            between Protective Life Corporation and Jack R. Anderson
                            (filed herewith).
          99.1           -- Press Release issued by the Registrant on March 11, 1998
                            (filed herewith).
</TABLE>
 
                                        2
<PAGE>   3
 
                                   SIGNATURES
 
     Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.
 
                                            UNITED DENTAL CARE, INC.
 
                                            By:    /s/ WILLIAM H. WILCOX
                                              ----------------------------------
                                                      William H. Wilcox
                                                President and Chief Executive
                                                            Officer
 
Date: March 16, 1998
 
                                        3
<PAGE>   4
 
                               INDEX TO EXHIBITS
 
<TABLE>
<CAPTION>
        EXHIBIT
         NUMBER                                  DESCRIPTION
        -------                                  -----------
<C>                      <S>
           2.1           -- Agreement and Plan of Merger, dated as of March 10, 1998
                            as amended as of March 17, 1998, by and among Protective
                            Life Corporation, PLC Merger Subsidiary Corporation, and
                            the Registrant (filed herewith).
           2.2           -- Stockholder Agreement, dated as of March 10, 1998,
                            between Protective Life Corporation and Jack R. Anderson
                            (filed herewith).
          99.1           -- Press Release issued by the Registrant on March 11, 1998
                            (filed herewith).
</TABLE>

<PAGE>   1
                                                                    EXHIBIT 2.1

                                                                [CONFORMED COPY]

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


                          AGREEMENT AND PLAN OF MERGER

                                  BY AND AMONG

                          PROTECTIVE LIFE CORPORATION,

                       PLC MERGER SUBSIDIARY CORPORATION

                                      AND

                            UNITED DENTAL CARE, INC.




                           DATED AS OF MARCH 10, 1998




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

                 * This Composite Conformed Copy reflects an

                          amendment entered into as

                              of March 17, 1998.

<PAGE>   2
                               TABLE OF CONTENTS

<TABLE>
<S>                                                                                                                     <C>
ARTICLE I
         THE MERGER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

         Section 1.1      The Merger  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
         Section 1.2      Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
         Section 1.3      Effective Time of the Merger  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
         Section 1.4      Directors and Officers of the Surviving Corporation . . . . . . . . . . . . . . . . . . . . . 2

ARTICLE II
         SHAREHOLDER APPROVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

         Section 2.1      Shareholder Meeting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
         Section 2.2      Proxy Statement/Prospectus; Registration Statement  . . . . . . . . . . . . . . . . . . . . . 3
         Section 2.3      No False or Misleading Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

ARTICLE III
         CONVERSION AND EXCHANGE OF SECURITIES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

         Section 3.1      Conversion of Shares  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
         Section 3.2      Fractional Interests  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
         Section 3.3      Exchange of Certificates  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
         Section 3.4      Dissenting Shares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
         Section 3.5      Certain Adjustments   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
         Section 3.6      No Liability  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

ARTICLE IV
         REPRESENTATIONS AND WARRANTIES OF PURCHASER AND SUB  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10

         Section 4.1      Organization  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
         Section 4.2      Capitalization  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
         Section 4.3      Sub and Purchaser Subsidiaries  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
         Section 4.4      Authority Relative to this Agreement  . . . . . . . . . . . . . . . . . . . . . . . . . . .  13
         Section 4.5      Consents and Approvals; No Violations . . . . . . . . . . . . . . . . . . . . . . . . . . .  13
         Section 4.6      Purchaser SEC Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
         Section 4.7      Statutory Financial Statements  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
         Section 4.8      Absence of Certain Changes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15
         Section 4.9      Regulatory Filings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15
</TABLE>





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<PAGE>   3

<TABLE>
<S>                                                                                                                    <C>
         Section 4.10     Information in Proxy Statement/Prospectus and Registration Statement  . . . . . . . . . . .  15
         Section 4.11     Brokers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15
         Section 4.12     Absence of Undisclosed Liabilities  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
         Section 4.13     Compliance with Laws; Certificates of Authority; Permits and Licenses . . . . . . . . . . .  16
         Section 4.14     Disclosure  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17

ARTICLE V
         REPRESENTATIONS AND WARRANTIES OF THE COMPANY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17

         Section 5.1      Organization  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
         Section 5.2      Capitalization  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
         Section 5.3      Company Subsidiaries  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
         Section 5.4      Authority Relative to this Agreement  . . . . . . . . . . . . . . . . . . . . . . . . . . .  19
         Section 5.5      Consents and Approvals: No Violations . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
         Section 5.6      Company SEC Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
         Section 5.7      Statutory Financial Statements  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
         Section 5.8      Absence of Certain Changes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
         Section 5.9      Litigation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
         Section 5.10     Absence of Undisclosed Liabilities  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
         Section 5.11     No Default  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
         Section 5.12     Taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23
         Section 5.13     Title to Property . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
         Section 5.14     Compliance with Laws; Certificates of Authority; Permits and Licenses . . . . . . . . . . .  24
         Section 5.15     Regulatory Filings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  26
         Section 5.16     Investments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  26
         Section 5.17     Reserves  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  26
         Section 5.18     Information in Proxy Statement/Prospectus and Registration Statement  . . . . . . . . . . .  26
         Section 5.19     Brokers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
         Section 5.20     Employee Benefit Plans; ERISA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
         Section 5.21     Labor and Employee Relations  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  29
         Section 5.22     Environmental Matters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  29
         Section 5.23     Opinion of Financial Advisor  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  30
         Section 5.24     Contracts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  30
         Section 5.25     Intellectual Property.    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  31
         Section 5.26     Voting Requirements; Takeover Statute . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
         Section 5.27     Disclosure  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
</TABLE>





                                       ii
<PAGE>   4
<TABLE>
<S>                                                                                                                    <C>
ARTICLE VI
         CONDUCT OF BUSINESS PENDING THE MERGER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32

         Section 6.1      Conduct of Business by the Company Pending the Merger . . . . . . . . . . . . . . . . . . .  32
         Section 6.2      Conduct of Business by Purchaser Pending the Merger . . . . . . . . . . . . . . . . . . . .  35
         Section 6.3      Investment Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36

ARTICLE VII
         ADDITIONAL AGREEMENTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36

         Section 7.1      Access and Information  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
         Section 7.2      No Solicitation.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         Section 7.3      Filings; Other Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         Section 7.4      Public Announcements  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
         Section 7.5      Stock Exchange Listing  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
         Section 7.6      Company Indemnification Provision . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
         Section 7.7      Comfort Letters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
         Section 7.8      Employee Benefits.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
         Section 7.9      Tax Matters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
         Section 7.10   Affiliates  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
         Section 7.11     Additional Matters  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  42

ARTICLE VIII
         CONDITIONS TO CONSUMMATION OF THE MERGER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  42

         Section 8.1      Conditions to Each Party's Obligation to Effect the Merger  . . . . . . . . . . . . . . . .  42
         Section 8.2      Conditions to Obligation of the Company to Effect the Merger  . . . . . . . . . . . . . . .  43
         Section 8.3      Conditions to Obligations of Purchaser and Sub to Effect the Merger . . . . . . . . . . . .  43

ARTICLE IX
         TERMINATION, AMENDMENT AND WAIVER  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45

         Section 9.1      Termination by Mutual Consent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
         Section 9.2      Termination by Either Purchaser or the Company  . . . . . . . . . . . . . . . . . . . . . .  45
         Section 9.3      Termination by the Company  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
         Section 9.4      Termination by Purchaser  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         Section 9.5      Effect of Termination and Abandonment . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
</TABLE>





                                      iii
<PAGE>   5


<TABLE>
<S>                                                                                                                    <C>
ARTICLE X
         GENERAL PROVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48

         Section 10.1     Survival of Representations, Warranties and Agreements  . . . . . . . . . . . . . . . . . .  48
         Section 10.2     Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49
         Section 10.3     Descriptive Headings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
         Section 10.4     Entire Agreement; Assignment  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
         Section 10.5     Governing Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
         Section 10.6     Expenses  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
         Section 10.7     Amendment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
         Section 10.8     Waiver  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
         Section 10.9     Counterparts; Effectiveness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
         Section 10.10    Severability; Validity; Parties in Interest . . . . . . . . . . . . . . . . . . . . . . . .  51
         Section 10.11    Enforcement of Agreement  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
         Section 10.12    Knowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
</TABLE>





                                       iv
<PAGE>   6
                             TABLE OF DEFINED TERMS

<TABLE>
<S>                                                                                                          <C>
Affiliate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.3
Affiliate Agreements  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section 7.10
Alternate Transaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 9.5
Annual Statutory Statements of the Purchaser  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.7
Annual Statutory Statements of the Company  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 5.7
Benefits  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 7.8
Cash Consideration  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.1
Certificates  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.1
Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 1.2
Closing Date  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 1.2
Code  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Recitals
Common Stock Consideration  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.1
Company . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Recitals
Company Benefit Plan  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section 5.20
Company Common Stock  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.1
Company Contracts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section 5.24
Company Disclosure Letter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Article V
Company Insurance Subsidiaries  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 5.3
Company Intellectual Property Rights  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section 5.25
Company Investments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section 5.16
Company Material Adverse Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 5.1
Company Plans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 7.5
Company SEC Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 5.6
Company Special Meeting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 2.1
Company State Statutory Accounting Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 5.7
Company Stock Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 5.2
Company Stockholder Approval  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section 5.26
Company Subsidiaries  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 5.3
Company Warrants  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 5.2
Confidentiality Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 7.1
Contracts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section 5.24
Costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 7.6
DGCL  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 1.1
Dissenting Share  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.4
Effective Time  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 1.3
Effective Time Price  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.2
Encumbrances  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.3
Environmental Laws  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section 5.22
ERISA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section 5.20
ERISA Affiliate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section 5.20
Exchange Act  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 2.3
</TABLE>





                                       v
<PAGE>   7

<TABLE>
<S>                                                                                                         <C>
Exchange Agent  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.3
Exchange Ratio  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.1
Expenses  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 9.5
GAAP  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.6
Governmental Entity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.5
Governmental Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.5
HMO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section 5.14
HSR Act . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.5
Indemnified Parties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 7.6
IRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section 5.20
Knowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 10.12
Merger  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Recitals
Merger Consideration  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.1
Moody's . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.3
NYSE  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.2
Oracare Business  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section 5.14
Oracare Entities  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section 5.14
Permitted Investments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 6.3
Person  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section  3.3
Proxy Statement/Prospectus  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 2.2
Purchaser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Recitals
Purchaser Common Stock  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.1
Purchaser Disclosure Letter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Article IV
Purchaser Insurance Subsidiaries  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.3
Purchaser Junior Preferred Stock  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.2
Purchaser Material Adverse Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.1
Purchaser Performance Shares  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.2
Purchaser Preferred Stock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.2
Purchaser Rights Agreement  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.1
Purchaser SARs  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.2
Purchaser SEC Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.6
Purchaser Significant Subsidiaries  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.3
Purchaser Subsidiaries  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.3
Purchaser Top Up Event  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 9.3
Purchaser Top Up Right  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 9.3
Quarterly Statutory Statements of Purchaser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.7
Quarterly Statutory Statements of the Company . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 5.7
Registration Statement  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 2.2
S&P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.3
SEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 2.2
Securities Act  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 2.2
Shares  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   Section 3.1
Spread Amount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.1
</TABLE>





                                       vi
<PAGE>   8

<TABLE>
<S>                                                                                                          <C>
State Statutory Accounting Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.7
Statutory Financial Statements of Purchaser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.7
Statutory Financial Statements of the Company . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 5.7
Stock Dividend  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.1
Stockholder Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Recitals
Sub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Recitals
Subsidiary  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4.3
Superior Proposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 7.2
Surviving Corporation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 1.1
Takeover Proposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 7.2
Taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section 5.12
Tax Returns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Section 5.12
Termination Payment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 9.5
Trading Average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 9.3
Trading Day . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 3.2
Warrants  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 5.2
</TABLE>





                                      vii
<PAGE>   9

                                    EXHIBITS


Exhibit A:  Form of Affiliate Letter  Agreement





                                      viii
<PAGE>   10





                          AGREEMENT AND PLAN OF MERGER

                 AGREEMENT AND PLAN OF MERGER, dated as of March 10, 1998, and
amended as of March 17, 1998, by and among PROTECTIVE LIFE CORPORATION, a
Delaware corporation ("Purchaser"), PLC MERGER SUBSIDIARY CORPORATION, a
Delaware corporation and a wholly-owned subsidiary of Purchaser ("Sub"), and
UNITED DENTAL CARE, INC., a Delaware corporation (the "Company").

                 WHEREAS, the respective Boards of Directors of Purchaser, Sub
and the Company have approved the merger of the Company with and into Sub upon
the terms and subject to the conditions set forth herein (the "Merger");

                 WHEREAS as a condition of the willingness of Purchaser to
enter into this Agreement, a principal stockholder of the Company has entered
into a Stockholder Agreement, dated as of the date hereof (the "Stockholder
Agreement"), with Purchaser, which provides, among other things, that, subject
to the terms and conditions thereof, such stockholder will vote such
stockholder's shares of Company Common Stock in favor of the Merger and the
approval and adoption of this Agreement; and

                 WHEREAS, Purchaser, Sub and the Company intend that the Merger
qualify as a reorganization within the meaning of Section 368(a) of the
Internal Revenue Code of 1986, as amended (the "Code").

                 NOW, THEREFORE, in consideration of the foregoing and the
respective representations, warranties, covenants and agreements set forth
herein, the parties hereto agree as follows:


                                   ARTICLE I
                                   THE MERGER

                 Section 1.1      The Merger.  Upon the terms and subject to
the conditions hereof, at the Effective Time (as defined in Section 1.3), the
Company shall be merged with and into Sub and the separate corporate existence
of the Company shall thereupon cease, and Sub shall be the surviving
corporation in the Merger (the "Surviving Corporation").  The Merger shall have
the effects set forth in the General Corporation Law of the State of Delaware
(the "DGCL").  Pursuant to the Merger, (a) the Articles of Incorporation of Sub
as in effect immediately prior to the Effective Time shall be the  Certificate
of Incorporation of the Surviving Corporation, until thereafter amended as
provided by law and such  Certificate of Incorporation and (b) the Bylaws
<PAGE>   11
of Sub as in effect immediately prior to the Effective Time shall be the Bylaws
of the Surviving Corporation, until thereafter amended as provided by law, such
Bylaws and the  Certificate of Incorporation of the Surviving Corporation.

                 Section 1.2      Closing.  The Company shall as promptly as
practicable notify Purchaser, and Purchaser and Sub shall as promptly as
practicable notify the Company, when the conditions to such party's or parties'
obligation to effect the Merger contained in Article VIII have been satisfied.
The closing of the Merger (the "Closing") shall take place at the offices of
Debevoise & Plimpton, 875 Third Avenue, New York, New York 10022, at 10:00
a.m., New York time, on the  second business day after the later of these
notices has been given (the "Closing Date"), unless another date or place is
agreed to in writing by the parties hereto; provided, however, that the parties
hereto agree to use all reasonable efforts to consummate the Closing on June
30, 1998, or as soon as practicable thereafter.

                 Section 1.3      Effective Time of the Merger.  The Merger
shall become effective when a properly executed Certificate of Merger meeting
the requirements of Section 251 of the DGCL is duly filed with the Secretary of
State of the State of Delaware  (the "Effective Time"), which filing shall be
made as soon as practicable after the closing of the transactions contemplated
by this Agreement in accordance with Section 1.2.

                 Section 1.4      Directors and Officers of the Surviving
Corporation.  The directors and officers of Sub immediately prior to the
Effective Time shall be the directors and officers of the Surviving Corporation
at the Effective Time.  The directors and officers of the Surviving Corporation
shall hold office until their respective successors shall have been duly
elected or appointed and qualified or until their earlier death, resignation or
removal in accordance with the Articles of Incorporation and Bylaws of the
Surviving Corporation.


                                   ARTICLE II
                              SHAREHOLDER APPROVAL

                 Section 2.1      Shareholder Meeting.  In order to consummate
the Merger, the Company, acting through its Board of Directors, shall, in
accordance with applicable law, duly call, give notice of, convene and hold a
special meeting of its shareholders (the "Company Special Meeting"), as soon as
practicable after the Registration Statement (as hereinafter defined) is
declared effective, for the purpose of voting upon the adoption of this
Agreement.   Subject to the provisions of Section 7.2(b), the Company shall
include in the Proxy Statement/Prospectus (as hereinafter defined) the
unanimous recommendation of the Board of Directors of the Company that





                                       2
<PAGE>   12
shareholders of the Company vote in favor of the approval of the Merger and the
adoption of this Agreement.

                 Section 2.2      Proxy Statement/Prospectus; Registration
Statement.  In connection with the solicitation of approval of the principal
terms of this Agreement and the Merger by the Company's shareholders, the
Company and Purchaser shall as promptly as practicable prepare and file with
the Securities and Exchange Commission (the "SEC") a preliminary proxy
statement relating to the Merger and this Agreement and use all reasonable
efforts to obtain and furnish the information required to be included by the
SEC in the Proxy Statement/Prospectus.  The Company, after consultation with
Purchaser, shall respond as promptly as practicable to any comments made by the
SEC with respect to the preliminary proxy statement and shall cause a
definitive proxy statement to be mailed to its shareholders at the earliest
practicable date.  Such definitive proxy statement shall also constitute a
prospectus of Purchaser with respect to the Purchaser Common Stock (as
hereinafter defined) to be issued in the Merger (such proxy statement and
prospectus are referred to herein as the "Proxy Statement/Prospectus"), which
prospectus is to be filed with the SEC as part of a registration statement on
Form S-4 (the "Registration Statement") for the purpose of registering such
shares of Purchaser Common Stock under the Securities Act of 1933, as amended
(the "Securities Act").  Purchaser shall prepare and as promptly as practicable
file with the SEC the Registration Statement.  Purchaser, after consultation
with the Company, shall respond as promptly as practicable to any comments made
by the SEC with respect to the Registration Statement, and shall use all
reasonable efforts to have the Registration Statement declared effective by the
SEC.  Purchaser shall also take any action required to be taken under
applicable state securities laws in connection with the issuance of Purchaser
Common Stock in the Merger, and the Company shall furnish all information
concerning the Company and the holders of Company Common Stock (as hereinafter
defined) as may be reasonably requested by Purchaser in connection with such
action.

                 Section 2.3      No False or Misleading Statements.  The
information provided and to be provided by each of Purchaser and the Company
specifically for use in the Registration Statement and the Proxy
Statement/Prospectus shall not, with respect to the information supplied by
such party, in the case of the Registration Statement, on the date the
Registration Statement becomes effective and, in the case of the Proxy
Statement/Prospectus, on the date upon which the Proxy Statement/Prospectus is
mailed to the shareholders of the Company or on the date upon which approval of
the Merger by the shareholders of the Company is obtained, contain any untrue
statement of a material fact or omit to state any material fact required to be
stated therein or necessary in order to make the statements therein, in light
of the circumstances under which they were made, not misleading.  Each of
Purchaser and the Company agrees to correct as promptly as practicable any such
information provided by it that shall have become false or misleading in any
material respect and to take all





                                       3
<PAGE>   13
steps necessary to file with the SEC and have declared effective or cleared by
the SEC any amendment or supplement to the Registration Statement or the Proxy
Statement/Prospectus so as to correct the same and to cause the Proxy
Statement/Prospectus as so corrected to be disseminated to the Company's
shareholders to the extent required by applicable law.  The Registration
Statement and the Proxy Statement/Prospectus shall comply as to form in all
material respects with the provisions of the Securities Act, the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and other applicable
law.


                                  ARTICLE III
                     CONVERSION AND EXCHANGE OF SECURITIES

                 Section 3.1      Conversion of Shares.  At the Effective Time,
by virtue of the Merger and without any action on the part of any of the
parties hereto or any holder of any of the following securities:

                 (a)      Subject to Sections 3.1(g), 3.5 and 9.3(c), each
share of common stock, par value $0.10 per share, of the Company (the "Company
Common Stock," and the shares of such Company Common Stock, the "Shares")
issued and outstanding immediately prior to the Effective Time (other than
Shares to be cancelled pursuant to Section 3.1(c) hereof and shares with
respect to which dissenter's rights have been asserted) shall, at the Effective
Time, by virtue of the Merger and without any action on the part of the holder
thereof, be converted into the right to receive:

                 (i)      0.2893 (as such ratio may be adjusted pursuant to
Sections 3.1(g), 3.5 and 9.3(c), the "Exchange Ratio") duly authorized, validly
issued, fully paid and nonassesable shares of common stock, par value $.50 per
share, of the Purchaser (together with the attached Series A Junior
Participating Preferred Stock Purchase Rights, issued in accordance with the
Rights Agreement, dated as of August 7, 1995 (the "Purchaser Rights
Agreement"), between Purchaser and AmSouth Bank (as successor by merger to
AmSouth Bank of Alabama, successor by conversion of charter to AmSouth Bank
N.A.), as Rights Agent, the "Purchaser Common Stock"); it being understood that
the Exchange Ratio gives effect to the two-for-one stock split in the form of a
stock dividend announced by the Purchaser on March 2, 1998 (the "Stock
Dividend") payable on April 1, 1998, to holders of record of Purchaser Common
Stock as of the close of business on March 13, 1998 (the "Common Stock
Consideration"); and

                 (ii)     $9.31 in cash (as such amount may be adjusted
pursuant to Sections 3.1(g) and 9.3(c), the "Cash Consideration," together with
the Common Stock Consideration, the "Merger Consideration").





                                       4
<PAGE>   14
                 (b)      All Shares of Company Common Stock converted  into
Merger Consideration at the Effective Time shall no longer be outstanding and
shall automatically be canceled and retired and shall cease to exist, and each
certificate previously evidencing any such Shares of Company Common Stock shall
thereafter represent the right to receive, upon the surrender of such
certificate in accordance with the provisions of Section 3.3, only the Merger
Consideration.  The holders of such certificates previously evidencing such
Shares of Company Common Stock outstanding immediately prior to the Effective
Time shall cease to have any rights with respect to such Shares of Company
Common Stock except as otherwise provided herein or by law.

                 (c)      Each share of Common Stock of Sub, par value $.01 per
share, issued and outstanding immediately prior to the Effective Time, shall
remain outstanding and shall be unchanged after the Merger and shall thereafter
constitute all of the issued and outstanding capital stock of the Surviving
Corporation.

                 (d)      All Shares of Company Common Stock that are owned by
the Company as treasury stock and any Shares of Company Common Stock owned by
Purchaser or Sub or any other direct or indirect wholly owned Purchaser
Subsidiary shall, at the Effective Time, be canceled and retired and shall
cease to exist and no Purchaser Common Stock or other consideration shall be
delivered in exchange therefor except for any shares held in a Purchaser
Subsidiary separate account or mutual fund.

                 (e)      On and after the Effective Time, holders of
certificates which immediately prior to the Effective Time represented
outstanding Shares (the "Certificates") shall cease to have any rights as
stockholders of the Company, except the right to receive the Merger
Consideration for each Share held by them.

                 (f)      Each Company Stock Option and Company Warrant (each
as defined in Section 5.2) which is not exercisable immediately prior to the
Effective Time shall become exercisable and each Company Stock Option and
Company Warrant (other than Company Stock Options and Company Warrants for
which exercise notices have been delivered and with respect to which the
exercise price has been paid) shall be canceled, and each holder of such a
Company Stock Option or Company Warrant will be entitled to receive, for each
share of Company Common Stock subject to such Company Stock Option or Company
Warrant, an amount of Purchaser Common Stock and cash equal in the aggregate to
the excess, if any, of the Merger Consideration (calculated using the Effective
Time Price (as hereinafter defined)) over the per share exercise price of such
Company Stock Option or Company Warrant, without interest (the "Spread
Amount").  The portion of such Spread Amount equal to the product of (i) such
Spread Amount  multiplied by (ii) the percentage of the Merger Consideration
payable in Purchaser Common Stock shall be paid in Purchaser Common Stock, and
the remainder  of the Spread Amount shall be paid in cash.  The amount payable





                                       5
<PAGE>   15
pursuant to this Section 3.l(f) shall be subject to all applicable tax
withholding, which shall be deducted from the portion of the  Spread Amount
payable in cash.

                 (g)  If required by special counsel to the Company or special
counsel to Purchaser in order for such counsel to provide the opinions required
by Section 8.2(b) or Section 8.3(b), respectively, the Exchange Ratio (and the
number of shares of Purchaser Common Stock to be issued as Common Stock
Consideration with respect to each share of Company Common Stock pursuant to
Section 3.1) shall be increased (and the Cash Consideration correspondingly
decreased) so that, after taking into account the Effective Time Price, any
cash paid in lieu of fractional shares pursuant to Section 3.2, and any cash
paid with respect to Dissenting Shares pursuant to Section 3.4, the Common
Stock Consideration shall constitute not less than 45% by value of the total
consideration paid with respect to the Company Common Stock.

                 Section 3.2      Fractional Interests.  No certificates or
scrip representing fractional shares of Purchaser Common Stock shall be issued
in connection with the Merger, and such fractional interests will not entitle
the owner thereof to any rights as a shareholder of Purchaser.  In lieu of a
fractional interest in a share of Purchaser Common Stock, each holder of a
Share or Shares of Company Common Stock exchanged pursuant to Section 3.1(a)
and each holder of any Company Stock Options cancelled pursuant to Section
3.1(f) who would otherwise have been entitled to receive a fraction of a share
of Purchaser Common Stock shall receive cash (without interest) in an amount
equal to the product of such fractional interest multiplied by the closing
sales price, regular way, per share rounded to four decimal points, of the
Purchaser Common Stock as reported in The Wall Street Journal,  for the New
York Stock Exchange ("NYSE") trading  day ("Trading Day")  which is the Trading
Day  of the Effective Time (the "Effective Time Price").

                 Section 3.3      Exchange of Certificates.  (a) As soon as
practicable after the execution and delivery of this Agreement and, in any
event, not less than five Trading Days prior to the mailing of the Proxy
Statement/Prospectus to holders of Company Common Stock, Purchaser shall
designate a bank or trust company (or such other person or persons as shall be
reasonably acceptable to Purchaser and Company) to act as exchange agent (the
"Exchange Agent") in effecting the exchange of Certificates of Company Common
Stock for Merger Consideration pursuant to Section 3.1(a) hereof (and cash in
lieu of fractional interests in accordance with Section 3.2).  Upon the
surrender to the Exchange Agent of Certificates representing Shares of Company
Common Stock and a duly completed and executed letter of transmittal (referred
to in Section 3.3(d)) with respect to all of the Shares owned by a holder of
Shares, Purchaser shall use its best efforts to cause the Exchange Agent to,
within three business days of receipt of such Certificates and transmittal
letter, pay the holder of such Certificates the Merger Consideration (and cash
in lieu of fractional interests in accordance with Section 3.2), and such
Certificate shall forthwith be cancelled.  Until so surrendered





                                       6
<PAGE>   16
and exchanged, each such Certificate that prior to the Effective Time
represented Shares of Company Common Stock (other than Certificates
representing Dissenting Shares or Shares of Company Common Stock to be
cancelled in accordance with Section 3.1(d)) shall represent solely the right
to receive Merger Consideration (and cash in lieu of fractional interests in
accordance with Section 3.2).  No interest shall be paid or accrued on Merger
Consideration.

                 (b)      As of  the Effective Time, Purchaser shall deposit or
cause to be deposited in trust with the Exchange Agent, for the benefit of the
holders of Shares of Company Common Stock, for exchange in accordance with this
Article III, the aggregate Merger Consideration.

                 (c)      The cash portion of the aggregate Merger
Consideration shall be invested by the Exchange Agent, as directed by and for
the benefit of the Surviving Corporation, provided that such investments shall
be limited to direct obligations of the United States of America, obligations
for which the full faith and credit of the United States of America is pledged
to provide for the payment of principal and interest, commercial paper rated of
the highest quality by Moody's Investor Services, Inc. ("Moody's") or Standard
& Poor's Ratings Group, a division of McGraw-Hill, Inc. ("S&P"), and
certificates of deposit issued by a commercial bank whose long-term debt
obligations are rated at least A2 by Moody's or at least A by S&P, in each case
having a maturity not in excess of one year and provided further that no such
investment shall result in a delay in the payment of Merger Consideration to
holders of Company Common Stock.

                 (d)      Promptly after the Effective Date, Purchaser shall
send, or shall cause the Exchange Agent to send, to each holder of Shares of
Company Common Stock at the Effective Date a letter of transmittal for use in
such exchange (which shall specify that delivery of the Merger Consideration
shall be effected, and risk of loss and title shall pass, only upon proper
delivery of the Certificates representing shares of Company Common Stock to the
Exchange Agent).

                 (e)      If any portion of the Merger Consideration is to be
paid to a person other than the registered holder of the shares of Company
Common Stock represented by the  Certificate or Certificates surrendered in
exchange therefor, it shall be a condition to such payment that the Certificate
or Certificates so surrendered shall be properly endorsed or otherwise be in
proper form for transfer and that the person requesting such payment shall pay
to the Exchange Agent any transfer or other taxes required as a result of such
payment to a Person other than the registered holder of such shares of Company
Common Stock or establish to the satisfaction of the Exchange Agent that such
tax has been  paid or is not payable.  For purposes of this Agreement, "person"
means an individual, a corporation, a limited liability company, a partnership,





                                       7
<PAGE>   17
an association, a trust or any other entity or organization, including, without
limitation, a government or political subdivision or any agency or
instrumentality thereof.

                 (f)      Any portion of the Merger Consideration made
available to the Exchange Agent pursuant to Section 3.3(b) to pay for shares of
Company Common Stock in respect of which dissenters' rights have been perfected
shall be returned to Purchaser, upon demand.

                 (g)      As promptly as practicable following the date which
is six months after the Effective Time, the Exchange Agent shall deliver to the
Surviving Corporation all cash, shares of Purchaser Common Stock, Certificates
and other documents in its possession relating to the transactions described in
this Agreement and the Exchange Agent's duties shall terminate.  Thereafter,
each holder of a Certificate may surrender such Certificate to the Surviving
Corporation and (subject to applicable abandoned property, escheat and similar
laws and, in the case of Dissenting Shares, subject to applicable law) receive
in exchange therefor the applicable Merger Consideration (and cash in lieu of
fractional interests in accordance with Section 3.2), without any interest
thereon.

                 (h)      After the Effective Time, there shall be no transfers
on the stock transfer books of the Surviving Corporation of any Shares of
Company Common Stock.  If, after the Effective Time, Certificates formerly
representing Shares of Company Common Stock are presented to the Surviving
Corporation or the Exchange Agent, they shall be cancelled and (subject to
applicable abandoned property, escheat and similar laws and, in the case of
Dissenting Shares, subject to applicable law) exchanged for Merger
Consideration (and cash in lieu of fractional interests in accordance with
Section 3.2), as provided in this Article III.

                 (i)      No dividends or other distributions declared or made
after the Effective Time with respect to shares of Purchaser Common Stock shall
be paid to the holder of any unsurrendered Certificate with respect to the
shares of Purchaser Common Stock such holder is entitled to receive, and no
cash payment in lieu of fractional interests shall be paid pursuant to Section
3.2, in each case, until the holder of such Certificate shall surrender such
Certificate, in accordance with the provisions of this Agreement.

                 (j)      The Exchange Agent or Purchaser shall be entitled to
deduct and withhold from the consideration otherwise payable pursuant to this
Agreement to any holder of Company Common Stock such amounts as the Exchange
Agent, Purchaser or the Surviving Corporation, as the case may be, is required
to deduct and withhold with respect to such payment under the Code or any
provision of state, local or foreign tax law.  Any amounts so withheld shall be
treated for all purposes of this Agreement as





                                       8
<PAGE>   18
having been paid to the holder of the Company Common Stock in respect of which
such deduction and withholding was made.

                 Section 3.4      Dissenting Shares.  (a)  Notwithstanding
anything in this agreement to the contrary, shares of Company Common Stock
which are held by any recordholder who has not voted in favor of the Merger or
consented thereto in writing and who has demanded appraisal rights in
accordance with Section 262 of the DGCL (the "Dissenting Shares") shall not be
converted into the right to receive the Merger Consideration hereunder but
shall become the right to receive such consideration as may be determined due
in respect of such Dissenting Shares pursuant to the DGCL; provided, however,
that any holder of Dissenting Shares who shall have failed to perfect, or shall
have withdrawn or lost his rights to appraisal of such Dissenting Shares, in
each case under the DGCL, shall forfeit the right to appraisal of such
Dissenting Shares, and such Dissenting Shares shall be deemed to have been
converted into the right to receive, as of the Effective Time, the Merger
Consideration in accordance with Section 3.2, without interest.
Notwithstanding anything contained in this Section 3.5, if (i) the Merger is
rescinded or abandoned or (ii) if the stockholders of the Company revoke the
authority to effect the Merger, then the right of any stockholder to be paid
the fair value of such stockholder's Dissenting Shares shall cease.  The
Surviving Corporation shall comply with all of its obligations under the DGCL
with respect to holders of Dissenting Shares.

                 (b)      The Company shall give Purchaser (i) prompt notice of
any demands for appraisal (any withdrawals of such demands) received by the
Company and any other related instruments served pursuant to the DGCL and
received by the Company, and (ii) the opportunity to direct all negotiations
and proceedings with respect to demands for appraisal under the DGCL.  The
Company shall not, except with the prior written consent of Purchaser, make any
payment with respect to any demands for appraisal or offer to settle any such
demands.

                 Section 3.5      Certain Adjustments.  If after the date
hereof and on or prior to the Effective Date the outstanding shares of
Purchaser Common Stock shall be changed into a different number of shares by
reason of any reclassification, recapitalization, split-up, combination or
exchange of shares, or any dividend payable in stock or other securities shall
be declared thereon with a record date within such period, or any similar event
shall occur (any such action, an "Adjustment Event"), the Exchange Ratio shall
be adjusted accordingly to provide to the holders of Company Common Stock the
same economic result as contemplated by this Agreement prior to such Adjustment
Event, it being agreed that no adjustment shall be made pursuant to this
Section 3.5 for the Stock Dividend.

                 Section 3.6      No Liability.  Neither Purchaser, the Company
nor the Surviving Corporation shall be liable to any holder of shares of
Company Common





                                       9
<PAGE>   19
Stock for any Merger Consideration in respect of such shares (or dividends or
distributions with respect thereto) delivered to a public official pursuant to
any applicable abandoned property, escheat or similar law.  In the event any
Certificate shall have been lost, stolen or destroyed, upon the making of an
affidavit of that fact by the person claiming such Certificate to be lost,
stolen or destroyed and, if required by Purchaser, the posting by such person
of a bond in customary form and amount as indemnity against any claim that may
be made against it with respect to such Certificate, the Exchange Agent will
issue in exchange for such lost, stolen or destroyed Certificate the Merger
Consideration (and cash in lieu of fractional interests in accordance with
Section 3.4), without any interest or other payments thereon, upon due
surrender and delivery of such Certificate pursuant to this Agreement.


                                   ARTICLE IV
              REPRESENTATIONS AND WARRANTIES OF PURCHASER AND SUB

                 Except as otherwise disclosed to the Company in a letter
delivered to it prior to the execution hereof (which letter contains
appropriate references to identify the representations and warranties to which
the information in such letter relates) (the "Purchaser Disclosure Letter"),
Purchaser represents and warrants to the Company as follows:

                 Section 4.1      Organization.  Each of Purchaser and Sub is a
corporation duly organized, validly existing and in good standing under the
laws of the State of Delaware, with the corporate power and authority and all
necessary governmental approvals to own, lease and operate its properties and
to carry on its business as it is now being conducted or presently proposed to
be conducted.  Each of Purchaser and Sub is duly qualified as a foreign
corporation to do business, and is in good standing, in each jurisdiction where
the character of its properties owned or held under lease or the nature of its
activities makes such qualification necessary, except where the failure to be
so qualified would not individually or in the aggregate have a Purchaser
Material Adverse Effect.  As used herein "Purchaser Material Adverse Effect"
shall mean any material adverse effect on the business, assets, liabilities,
results of operations or financial condition of Purchaser, Sub and the
Purchaser Subsidiaries (as hereinafter defined), taken as a whole, whether
resulting from individual or aggregate events, occurrences or circumstances.

                 Section 4.2      Capitalization.  As of February 26, 1998: (i)
the authorized capital stock of Purchaser consists of 80,000,000 shares of
Purchaser Common Stock, 4,000,000 shares of Preferred Stock, par value $1.00
per share, of Purchaser ("Purchaser Preferred Stock")  of which 400,000 shares
have been designated as Series A Junior Participating Cumulative Preferred
Stock, par value $1.00 per share, of Purchaser ("Purchaser Junior Preferred
Stock") and reserved for





                                       10
<PAGE>   20
issuance pursuant to the Purchaser Rights Agreement, (ii) 30,879,132 shares of
Purchaser Common Stock, and no shares of Purchaser Preferred Stock or Purchaser
Junior Preferred Stock, were issued and outstanding, (iii) 337,500 stock
appreciation rights ("Purchaser SARs") were issued and outstanding, which when
exercised will be payable in an indeterminate number of shares of Purchaser
Common Stock and (iv) 222,360 performance share awards (the "Purchaser
Performance Shares") were issued and outstanding, which are settleable upon the
occurrence of certain events, or the satisfaction of certain conditions, in up
to 353,385 shares of Purchaser Common Stock.  All of the issued and outstanding
shares of capital stock of Purchaser are validly issued, fully paid and
nonassessable and free of preemptive rights.  All of the shares of Purchaser
Common Stock reserved for issuance in exchange for shares of Company Common
Stock or upon cancellation of Company Stock Options and Company Warrants at the
Effective Time in accordance with this Agreement will be, when so issued, duly
authorized, validly issued, fully paid and nonassessable and free of preemptive
rights.  Since  February 26, 1998 to the date hereof, no shares of Purchaser's
capital stock have been issued, except Purchaser Common Stock issued pursuant
to Purchaser SARs or other employee benefit plans.  Except for (i) outstanding
Purchaser SARs and Purchaser Performance Shares, (ii) 2,000,000 FELINE
(Flexible Equity-Linked Exchangeable) PRIDES (Preferred Redeemable Increased
Dividend Securities) of Purchaser and (iii) the Series A Junior Participating
Preferred Stock Purchase Rights attached to the Purchaser Common Stock, as of
the date of this Agreement, there are no options, warrants, subscriptions,
calls, rights, convertible securities or other agreements or commitments
obligating Purchaser to issue, transfer, sell, redeem, repurchase or otherwise
acquire any shares of its capital stock.

                 Section 4.3      Sub and Purchaser Subsidiaries.  (a)  The
authorized capital stock of Sub consists of 1000 shares of Common Stock, par
value $1.00 per share.  As of the date hereof, 1000 shares of Common Stock of
Sub are issued and outstanding and are owned by Purchaser.

                 (b)      Each subsidiary of Purchaser, other than Sub
(collectively, the "Purchaser Subsidiaries"), is a corporation duly organized,
validly existing and in good standing under the laws of the jurisdiction of its
incorporation and has the corporate power and authority and all necessary
government approvals to own, lease and operate its properties and to carry on
its business as now being conducted, except where the failure to be so
organized, existing and in good standing or to have such power and authority or
necessary governmental approvals would not individually or in the aggregate
have a Purchaser Material Adverse Effect.  Each Purchaser Subsidiary is duly
qualified or licensed and in good standing to do business in each jurisdiction
in which the property owned, leased or operated by it or the nature of the
business conducted by it makes such qualification or licensing necessary,
except in such jurisdictions where the failure to be so duly qualified or
licensed and in good standing





                                       11
<PAGE>   21
would not individually or in the aggregate have a Purchaser Material Adverse
Effect. For purposes of this Agreement: (i) an "affiliate" of any person means
another person that directly or indirectly, through one or more intermediaries,
controls, is controlled by, or is under common control with, such first person;
and (ii) a "subsidiary" of any person means another person, an amount of the
voting securities of which or of other voting ownership or voting partnership
interests of which is sufficient to elect at least a majority of its board of
directors or other governing body (or, if there are no such voting interests,
50% or more of the equity interests of which) is owned directly or indirectly
by such first person.

                 (c)      Each of the Purchaser Subsidiaries that is as of the
date hereof a significant subsidiary as such term is defined in Rule 1-02 of
Regulation S-X under the Exchange Act (collectively, the "Purchaser Significant
Subsidiaries") and is an insurance company, a health maintenance organization
or a prepaid dental plan, a limited health service organization or a hospital,
medical, dental services or indemnity corporation (collectively, the "Purchaser
Insurance Subsidiaries") is (i) duly licensed or authorized as an insurance
company, a health maintenance organization or a prepaid dental plan, a limited
health service organization or a hospital, medical, dental services or
indemnity corporation in its jurisdiction of incorporation and (ii) duly
licensed or authorized as an insurance company, a health maintenance
organization or a prepaid dental plan, a limited health service organization or
a hospital, medical, dental services or indemnity corporation in each other
jurisdiction where it is required to be so licensed or authorized, except where
the failure to be so licensed or authorized would not individually or in the
aggregate have a Purchaser Material Adverse Effect.

                 (d)      Purchaser is, directly or indirectly, the record and
beneficial owner of all of the outstanding shares of capital stock of Sub and
of each of the Purchaser Insurance Subsidiaries, there are no proxies with
respect to any such shares, and no equity securities of Sub or of any Purchaser
Subsidiary are or may become required to be issued by reason of any options,
warrants, rights to subscribe to, calls or commitments of any character
whatsoever relating to, or securities or rights convertible into or
exchangeable or exercisable for, shares of any capital stock of Sub or of any
Purchaser  Subsidiary, and there are no contracts, commitments, understandings
or arrangements by which Purchaser or any Purchaser  Subsidiary is or may be
bound to issue, redeem, purchase or sell additional shares of capital stock of
Sub or of any Purchaser  Subsidiary or securities convertible into or
exchangeable or exercisable for any such shares.  All of such shares so owned
by Purchaser are validly issued, fully paid and nonassessable and are owned by
it free and clear of all mortgages, pledges, liens, charges, encumbrances,
defects, security interests, claims, options and restrictions of all kinds
("Encumbrances") securing obligations not reflected in the Purchaser SEC
Reports.





                                       12
<PAGE>   22
                 Section 4.4      Authority Relative to this Agreement.  Each
of Purchaser and Sub has the corporate power and authority to enter into this
Agreement and to carry out its obligations hereunder.  The execution, delivery
and performance of this Agreement by Purchaser and Sub and the consummation by
Purchaser and Sub of the transactions contemplated hereby have been duly
authorized by the Board of Directors of Purchaser and Sub, and by Purchaser as
the sole shareholder of Sub by written consent, and no other corporate
proceedings on the part of Purchaser or Sub are necessary to authorize this
Agreement or the transactions contemplated hereby.  This Agreement has been
duly and validly executed and delivered by each of Purchaser and Sub and
(assuming this Agreement constitutes a valid and binding obligation of the
Company) constitutes a valid and binding agreement of each of Purchaser and
Sub, enforceable against Purchaser and Sub in accordance with its terms,
subject to applicable bankruptcy, reorganization, insolvency, moratorium and
other laws affecting creditors' rights generally from time to time in effect
and to general equitable principles.

                 Section 4.5      Consents and Approvals; No Violations.
Except (a) for applicable requirements of the Hart-Scott-Rodino Antitrust
Improvements Act of 1976, as amended (the "HSR Act"), the Securities Act, the
Exchange Act, state or foreign laws relating to takeovers, state securities or
blue sky laws, state insurance laws and the regulations promulgated thereunder,
certain state and local regulatory filings relating to  insurance companies,
health maintenance organizations, prepaid dental plans or dental practice
management and similar matters and the filing of the Certificate of Merger as
required by the DGCL (collectively, the "Governmental Requirements"), or (b)
where the failure to make any filing with, or to obtain any permit,
authorization, consent or approval of, any court or tribunal or administrative,
governmental or regulatory body, agency, commission, division, department,
public body or other authority (a "Government Entity") would not prevent or
delay the consummation of the Merger, or otherwise prevent Purchaser or Sub
from performing their respective obligations under this Agreement, and would
not individually or in the aggregate have a Purchaser Material Adverse Effect,
no filing with, and no permit, authorization, consent or approval of, any
Governmental Entity is necessary for the execution, delivery and performance of
this Agreement by Purchaser and Sub and the consummation of the transactions
contemplated by this Agreement.  Neither the execution, delivery or performance
of this Agreement by Purchaser or Sub, nor the consummation by Purchaser or Sub
of the transactions contemplated hereby, nor compliance by Purchaser or Sub
with any of the provisions hereof, will (i) conflict with or result in any
breach of any provisions of the  Certificates of Incorporation or Bylaws of
Purchaser or Sub or the Articles or Certificate of Incorporation, as the case
may be, or Bylaws of any of the Purchaser Subsidiaries, (ii) result in a
violation or breach of, or constitute (with or without due notice or lapse of
time or both) a default (or give rise to any right of termination,
cancellation, acceleration, vesting, payment, exercise, suspension or
revocation) under, any of the terms, conditions, or provisions of any note,
bond,





                                       13
<PAGE>   23
mortgage, deed of trust, security interest, indenture, license, contract,
agreement, plan or other instrument or obligation to which Purchaser, Sub or
any of the Purchaser Subsidiaries is a party or by which any of them or any of
their properties or assets may be bound, (iii) violate any order, writ,
injunction, decree, statute, rule or regulation applicable to Purchaser, Sub,
any Purchaser Subsidiary or any of their properties or assets, (iv) result in
the creation or imposition of any Encumbrance on any asset of Purchaser, Sub or
any Purchaser Subsidiary, or (v) cause the suspension or revocation of any
permit, license, governmental authorization, consent or approval necessary for
Purchaser, Sub or any of the Purchaser Subsidiaries to conduct its business as
currently conducted, except in the case of clauses (ii), (iii), (iv) and (v)
for violations, breaches, defaults, terminations, cancellations, accelerations,
vestings, payments, exercises, creations, impositions, suspensions or
revocations which would not individually or in the aggregate have a Purchaser
Material Adverse Effect.

                 Section 4.6      Purchaser SEC Reports.  Purchaser has  filed
all required reports, schedules, forms, statements and other documents with the
SEC since January 1, 1995 (collectively, the "Purchaser SEC Reports").  As of
the respective dates such Purchaser SEC Reports were filed or, if any such
Purchaser SEC Reports were amended, as of the date such amendment was filed,
each of the Purchaser SEC Reports (i) complied in all material respects with
all applicable requirements of the Securities Act and the Exchange Act, and the
rules and regulations promulgated thereunder and (ii) did not contain any
untrue statement of a material fact or omit to state a material fact required
to be stated therein or necessary in order to make the statements therein, in
light of the circumstances under which they were made, not misleading.  Each of
(i) the audited  consolidated financial statements of Purchaser (including any
related notes and schedules) included (or incorporated by reference) in  the
Purchaser SEC Reports, and (ii) the unaudited consolidated interim financial
statements of Purchaser (including any related notes and schedules) included
(or incorporated by reference) in  the Purchaser SEC Reports, fairly present,
in conformity with generally accepted accounting principles ("GAAP") applied on
a consistent basis (except as may be indicated in the notes thereto), the
consolidated financial position of Purchaser and the Purchaser Subsidiaries as
of the dates thereof and the consolidated results of their operations and
changes in their financial position for the periods then ended (subject to
normal year- end adjustments in the case of any unaudited interim financial
statements).

                 Section 4.7      Statutory Financial Statements.  The Annual
Statements of the Purchaser Insurance Subsidiaries, as filed with the
departments of insurance for all applicable domiciliary states for the years
ended December 31, 1996 and December 31, 1997 (together with all exhibits and
schedules thereto, the "Statutory Financial Statements of Purchaser"), have
been prepared in accordance with the accounting practices prescribed or
permitted by the departments of insurance for all applicable domiciliary states
for purposes of financial reporting to the respective state's insurance
regulators ("State Statutory Accounting Principles"), and such accounting
practices





                                       14
<PAGE>   24
have been applied on a basis consistent with State Statutory Accounting
Principles throughout the periods involved, except as expressly set forth in
the notes, exhibits or schedules thereto, and the Statutory Financial
Statements of Purchaser present fairly in all material respects the financial
position and the results of operations for the Purchaser Insurance Subsidiaries
as of the dates and for the periods therein in accordance with State Statutory
Accounting Principles. Purchaser has delivered to the Company true and complete
copies of the  Statutory Financial Statements of Purchaser.

                 Section 4.8      Absence of Certain Changes.  Since September
30, 1997, there has been no event or condition which has had (or is reasonably
likely to result in) a Purchaser Material Adverse Effect, and Purchaser and the
Purchaser  Subsidiaries have in all material respects conducted their
businesses in the ordinary course consistent with past practices and have not
taken any action which, if taken after the date hereof, would violate Section
6.2 hereof.

                 Section 4.9      Regulatory Filings.  Purchaser and the
Purchaser Subsidiaries have filed all reports, statements, documents,
registrations, filings or submissions required to be filed by any of them with
any Governmental Entity, except where the failure to file, in the aggregate,
would not have a Purchaser Material Adverse Effect; and, to the  knowledge of
the senior executive officers of Purchaser, all such reports, statements,
documents, registrations, filings and submissions were in all material respects
true, complete and accurate when filed.

                 Section 4.10     Information in Proxy Statement/Prospectus and
Registration Statement.  The Registration Statement (or any amendment thereof
or supplement thereto), at the date it becomes effective and at the time of the
Company Special Meeting, will not contain any untrue statement of a material
fact or omit to state any material fact required to be stated therein or
necessary in order to make the statements therein, in light of the
circumstances under which they are made, not misleading, except that no
representation is made by Purchaser with respect to statements made therein
based on information supplied by the Company in writing for inclusion in the
Registration Statement.  None of the information supplied by Purchaser for
inclusion or incorporation by reference in the Proxy Statement/Prospectus will,
at the date mailed to shareholders and at the time of the Company Special
Meeting, contain any untrue statement of a material fact or omit to state any
material fact required to be stated therein or necessary in order to make the
statements therein, in light of the circumstances under which they are made,
not misleading.  The Registration Statement will comply in all material
respects with the provisions of the Securities Act and the rules and
regulations thereunder.

                 Section 4.11     Brokers.  Other than A.G. Edwards & Sons,
Inc., no person is entitled to any brokerage, financial advisory, finder's or
similar fee or





                                       15
<PAGE>   25
commission payable by Purchaser in connection with the transactions
contemplated by this Agreement based upon arrangements made by and on behalf of
Purchaser.

                 Section 4.12     Absence of Undisclosed Liabilities.  Except
for liabilities or obligations which are accrued or reserved against in the
Purchaser's financial statements (or reflected in the notes thereto) included
in the Purchaser SEC Reports filed as of the date hereof or disclosed in
Section 4.12 of the Purchaser Disclosure Letter or which were incurred after
September 30, 1997 in the ordinary course of business and consistent with past
practices or in connection with the transactions contemplated by this
Agreement, the Purchaser and the Purchaser Subsidiaries do not have any
liabilities or obligations (whether absolute, accrued, contingent or otherwise)
of a nature required by GAAP to be reflected in a consolidated balance sheet
(or reflected in the notes thereto) of the Purchaser.

                 Section 4.13     Compliance with Laws; Certificates of
Authority; Permits and Licenses.   (a)  The business of the Purchaser and each
of the Purchaser Significant Subsidiaries is being conducted in compliance in
all material respects with all applicable laws, including, without limitation,
all insurance, health maintenance organization ("HMO") and prepaid dental plan
codes, laws, ordinances, rules, regulations, decrees and orders of any
Governmental Entity, and any other codes, laws, ordinances, rules, regulations,
decrees and orders of any Governmental Entity relating to the offer and sale of
dental care products, plans or services (including the practice of dentistry),
the recruitment of dentists or dental offices in connection with the offer and
sale of such products, plans or services, the marketing of any such products,
plans or services to potential purchasers, patients or subscribers thereto, or
any joint venture, cooperative arrangement or business relationship with any
other party relating to the foregoing,  and all material notices, reports,
documents and other information required to be filed thereunder within the last
three years were properly filed in all material respects and were in compliance
in all material respects with such laws.

                 (b)      Purchaser, and each of the Purchaser Significant
Subsidiaries, has all certificates of authority, permits and licenses,
including, without limitation, insurance licenses, the use and exercise of
which are necessary for the conduct of its business as now conducted, other
than such certificates of authority, permits and licenses, including without
limitation, insurance licenses, the absence of which would not, individually or
in the aggregate, be reasonably expected to have a Purchaser Material Adverse
Effect.  The business of Purchaser and each of the Purchaser Subsidiaries has
been and is being conducted in compliance, in all material respects, with all
such certificates of authority, permits and licenses, including, without
limitation, insurance licenses.  To the knowledge of the senior executive
officers of Purchaser, all such certificates of authority, permits and
licenses, including, without limitation, insurance licenses, are in full force
and effect, and there is no proceeding or investigation pending or threatened
which would reasonably be expected to lead to the





                                       16
<PAGE>   26
revocation, amendment, failure to renew, limitation, suspension or restriction
of any such permit or insurance license.

                 Section 4.14     Disclosure.  No representation or warranty by
Purchaser or the Purchaser Subsidiaries in this Agreement, and no statement
contained in the Purchaser SEC Reports and the Statutory Financial Statements
of Purchaser, contains or will contain any untrue statement of a material fact
or omits or will omit to state any material fact necessary, in light of the
circumstances under which it was made, to make the statements herein or therein
not misleading.  There is no fact known to Purchaser which would reasonably be
expected to have a Purchaser Material Adverse Effect which has not been set
forth in the Purchaser SEC Reports, the Statutory Financial Statements of
Purchaser or in this Agreement, including the Purchaser Disclosure Letter.


                                   ARTICLE V
                 REPRESENTATIONS AND WARRANTIES OF THE COMPANY

                 Except as otherwise disclosed to Purchaser in a letter
delivered to it prior to the execution hereof (which letter contains
appropriate references to identify the representations and warranties herein to
which the information in such letter relates) (the "Company Disclosure
Letter"), the Company represents and warrants to Purchaser as follows:

                 Section 5.1      Organization.  The Company is a corporation
duly organized, validly existing and in good standing under the laws of the
State of Delaware and has the corporate power and authority and all necessary
governmental approvals to own, lease and operate its properties and to carry on
its business as it is now being conducted or presently proposed to be
conducted.  The Company is duly qualified as a foreign corporation to do
business, and is in good standing, in each jurisdiction where the character of
its properties owned or held under lease or the nature of its activities makes
such qualification necessary, except where the failure to be so qualified would
not individually or in the aggregate have a Company Material Adverse Effect.
As used herein "Company Material Adverse Effect" shall mean any material
adverse effect on the business, assets, liabilities, results of operations or
financial condition of the Company and the Company Subsidiaries, taken as a
whole, whether resulting from individual or aggregate events, occurrences or
circumstances.

                 Section 5.2      Capitalization.  As of  March 3, 1998: (i)
the authorized capital stock of the Company consisted of 15,000,000 shares of
Company Common Stock and 500,000 shares of Company Preferred Stock, (ii)
8,950,696 shares of Company Common Stock and no shares of Company Preferred
Stock were issued and outstanding and (iii) stock options to acquire 878,800
shares of Company Common





                                       17
<PAGE>   27
Stock were issued and outstanding under the stock option plans of the Company
(the "Company Stock Options") and Warrants (the "Company Warrants") to acquire
40,000 shares of Company Common Stock were issued and outstanding.  All of the
issued and outstanding shares of Company Common Stock are validly issued, fully
paid and nonassessable and free of preemptive rights.  Since March 3, 1998 to
the date hereof, no shares of the Company's capital stock have been issued,
except Company Common Stock pursuant to Company Stock Options or Company
Warrants.  Except as set forth above or as specified in Section 5.2 of the
Company Disclosure Letter, as of the date of this Agreement there are no shares
of capital stock of the Company issued or outstanding or any Company Stock
Options, warrants (any such warrants scheduled, the "Warrants"), subscriptions,
calls, rights, convertible securities or other agreements or commitments
obligating the Company to issue, transfer, sell, redeem, repurchase or
otherwise acquire any shares of its capital stock.  Since January 1, 1997 the
Company has not repurchased any shares of Company Common Stock.

                 Section 5.3      Company Subsidiaries.   (a) Section 5.3 (a)
of the Company Disclosure Letter sets forth the name of each subsidiary of the
Company (collectively, the "Company Subsidiaries") and the state or
jurisdiction of its incorporation.  Each Company Subsidiary is a corporation
duly organized, validly existing and in good standing under the laws of the
jurisdiction of its incorporation and has the corporate power and authority and
all necessary governmental approvals to own, lease and operate its properties
and to carry on its business as now being conducted, except where the failure
to be so organized, existing and in good standing or to have such power and
authority or necessary governmental approvals would not individually or in the
aggregate have a Company Material Adverse Effect.  Each Company Subsidiary is
duly qualified or licensed and in good standing to do business in each
jurisdiction in which the property owned, leased or operated by it or the
nature of the business conducted by it makes such qualification or licensing
necessary, except in such jurisdictions where the failure to be so duly
qualified or licensed and in good standing would not individually or in the
aggregate have a Company Material Adverse Effect.

                 (b)      Section 5.3(b) of the Company Disclosure Letter sets
forth the name of each of the Company Subsidiaries that is an insurance
company, a health maintenance organization or prepaid dental plan, a limited
health service organization or a hospital, medical, dental service or indemnity
corporation (collectively, the "Company Insurance Subsidiaries").  Except as
disclosed in Section 5.3(b) of the Company Disclosure Letter, each of the
Company Insurance Subsidiaries is (i) duly licensed or authorized as an
insurance company, a health maintenance organization or a prepaid dental plan,
a limited health service organization or a hospital, medical, dental services
or indemnity corporation in its jurisdiction of incorporation and (ii) duly
licensed or authorized as an insurance company, a health maintenance
organization or a prepaid dental plan, a limited health service organization or
a hospital, medical, dental





                                       18
<PAGE>   28
services or indemnity corporation in each other jurisdiction where it is
required to be so licensed or authorized.

                 (c)      Except as set forth in Section 5.3(c) of the Company
Disclosure Letter, the Company is, directly or indirectly, the record and
beneficial owner of all of the outstanding shares of capital stock of each of
the Company Subsidiaries, there are no proxies with respect to any such shares,
and no equity securities of any Company Subsidiary are or may become required
to be issued by reason of any options, warrants, rights to subscribe to, calls
or commitments of any character whatsoever relating to, or securities or rights
convertible into or exchangeable or exercisable for, shares of any capital
stock of any Company Subsidiary, and there are no contracts, commitments,
understandings or arrangements by which the Company or any Company Subsidiary
is or may be bound to issue, redeem, purchase or sell additional shares of
capital stock of any Company Subsidiary or securities convertible into or
exchangeable or exercisable for any such shares.  Except as set forth in
Section 5.3(c) of the Company Disclosure Letter, all of such shares so owned by
the Company are validly issued, fully paid and nonassessable and are owned by
it free and clear of any Encumbrances, restraints on alienation, or any other
restrictions with respect to the transferability or assignability thereof
(other than restrictions on transfer imposed by federal or state securities
laws).

                 (d)      Except for the Company Subsidiaries and as set forth
in the Statutory Financial Statements of the Company (as hereinafter defined)
or in Section 5.3(d) of the Company Disclosure Letter, the Company does not
directly or indirectly own any equity or similar interest in, or any interest
convertible into or exchangeable or exercisable for any equity or similar
interest in, any corporation, partnership, joint venture or other business
association or entity that directly or indirectly conducts any activity which
is material to the Company.

                 Section 5.4      Authority Relative to this Agreement.  The
Company has the corporate power and authority to enter into this Agreement and
to carry out its obligations hereunder.  The execution, delivery and
performance of this Agreement by the Company and the consummation by the
Company of the transactions contemplated hereby have been duly authorized by
the Company's Board of Directors, and no other corporate proceedings on the
part of the Company, other than obtaining shareholder approval pursuant to
Section 2.1, are necessary to authorize this Agreement or the transactions
contemplated hereby.  Subject to the foregoing, this Agreement has been duly
and validly executed and delivered by the Company and (assuming this Agreement
constitutes a valid and binding obligation of Purchaser and Sub) constitutes a
valid and binding agreement of the Company, enforceable against the Company in
accordance with its terms, subject to applicable bankruptcy, reorganization,
insolvency, moratorium and other laws affecting creditors' rights generally
from time to time in effect and to general equitable principles.





                                       19
<PAGE>   29
                 Section 5.5      Consents and Approvals: No Violations.
Except (a) for the Governmental Requirements, or (b) where the failure to make
any filing with, or to obtain any permit, authorization, consent or approval
of, any Governmental Entity would not prevent or delay the consummation of the
Merger, or otherwise prevent the Company from performing its obligations under
this Agreement, and would not individually or in the aggregate have a Company
Material Adverse Effect, no filing with, and no permit, authorization, consent
or approval of, any Governmental Entity is necessary for the execution,
delivery and performance of this Agreement by the Company and the consummation
of the transactions contemplated by this Agreement.  Except as set forth on
Section 5.5 of the Company Disclosure Letter, no consent or approval of any
other party (including, but not limited to, any party to any Company Contracts
(as defined below)) is required to be obtained by the Company or any Company
Subsidiary for the execution, delivery or performance of this Agreement or the
performance by the Company of the transactions contemplated hereby.  Except as
set forth in Section 5.5 of the Company Disclosure Letter, neither the
execution, delivery or performance of this Agreement by the Company, nor the
consummation by the Company of the transactions contemplated hereby, nor
compliance by the Company with any of the provisions hereof, will (i) conflict
with or result in any breach of any provisions of the  Certificate of
Incorporation or Bylaws of the Company or the Certificate or  Certificate of
Incorporation, as the case may be, or Bylaws of any of the Company
Subsidiaries, (ii) result in a violation or breach of, or constitute (with or
without due notice or lapse of time or both) a default (or give rise to any
right of termination, cancellation, vesting, payment, exercise, acceleration,
suspension or revocation) under, any of the terms, conditions or provisions of
any note, bond, mortgage, deed of trust, security interest, indenture, license,
contract, agreement, plan or other instrument or obligation to which the
Company or any of the Company Subsidiaries is a party or by which any of them
or any of their properties or assets may be bound or affected, (iii) violate
any order, writ, injunction, decree, statute, rule or regulation applicable to
the Company, of the Company Subsidiaries or any of their properties or assets,
(iv) result in the creation or imposition of any Encumbrance on any asset of
the Company or any Company Subsidiary or (v) cause the suspension or revocation
of any certificate of authority, permit, license, governmental authorization,
consent or approval necessary for the Company or any of the Company
Subsidiaries to conduct its business as currently conducted, except in the case
of clauses (ii), (iii), (iv) and (v) for violations, breaches, defaults,
terminations, cancellations, accelerations, vestings, payments, exercises,
creations, impositions, suspensions or revocations which would not individually
or in the aggregate have a Company Material Adverse Effect.

                 Section 5.6      Company SEC Reports.  The Company has  filed
all required reports, schedules, forms, statements and other documents with the
SEC since January 1, 1995 (collectively, the "Company SEC Reports").  As of the
respective dates the Company SEC Reports were filed or, if any such Company SEC
Reports were amended, as of the date such amendment was filed, each of the
Company SEC





                                       20
<PAGE>   30
Reports (i) complied in all material respects with all applicable requirements
of the Securities Act and Exchange Act, and the rules and regulations
promulgated thereunder and (ii) did not contain any untrue statement of a
material fact or omit to state a material fact required to be stated therein or
necessary in order to make the statements therein, in light of the
circumstances under which they were made, not misleading.  Each of (i) the
audited consolidated financial statements of the Company (including any related
notes and schedules) included (or incorporated by reference) in  the Company
SEC Reports and (ii) the unaudited consolidated interim financial statements
for the Company (including any related notes and schedules) included (or
incorporated by reference) in  the Company SEC Reports, fairly present, in
conformity with GAAP applied on a consistent basis (except as may be indicated
in the notes thereto), the consolidated financial position of the Company and
the Company Subsidiaries as of the dates thereof and the consolidated results
of their operations and changes in their financial position for the periods
then ended (subject to normal year-end adjustments, in the case of any
unaudited interim financial statements).

                 Section 5.7      Statutory Financial Statements.  The Annual
Statements of each of the Company Insurance Subsidiaries, as filed with the
departments of insurance for all applicable domiciliary states for the years
ended December 31, 1996 and December 31, 1997 (together with all exhibits and
schedules thereto, the "Statutory Financial Statements of the Company"), have
been prepared in accordance with the accounting practices prescribed or
permitted by the respective state's department of insurance for purposes of
financial reporting to the respective state's insurance regulators ("Company
State Statutory Accounting Principles"), and such accounting practices have
been applied on a basis consistent with Company State Statutory Accounting
Principles throughout the periods involved, except as expressly set forth in
the notes, exhibits or schedules thereto, and the Statutory Financial
Statements of the Company present fairly in all material respects the financial
position and the results of operations for the Company Insurance Subsidiaries
as of the dates and for the periods therein in accordance with Company State
Statutory Accounting Principles. The Company has delivered to Purchaser true
and complete copies of the  Statutory Financial Statements of the Company.

                 Section 5.8      Absence of Certain Changes.  Since September
30, 1997, there has been no event or condition which has had (or is reasonably
likely to result in) a Company Material Adverse Effect, and except as set forth
in Section 5.8 of the Company Disclosure Letter, the Company and the Company
Subsidiaries have in all material respects conducted their businesses in the
ordinary course consistent with past practices and have not taken any action
which, if taken after the date hereof, would violate Section 6.1 hereof.

                 Section 5.9      Litigation.  Except as set forth in Section
5.9 of the Company Disclosure Letter, there is no suit, action, proceeding or
investigation





                                       21
<PAGE>   31
(whether at law or equity, before or by any federal, state or foreign court,
tribunal, commission, board, agency or instrumentality, or before any
arbitrator) pending or, to the  knowledge of the Company, threatened against or
affecting the Company or any of the Company Subsidiaries, the outcome of which,
in the reasonable judgment of the Company, is likely individually or in the
aggregate to have a Company Material Adverse Effect, nor is there any judgment,
decree, injunction, rule or order of any court, governmental department,
commission, agency, instrumentality or arbitrator outstanding against the
Company or any of the Company Subsidiaries having, or which, insofar as can
reasonably be foreseen, in the future may have, a Company Material Adverse
Effect.

                 Section 5.10     Absence of Undisclosed Liabilities.  Except
for liabilities or obligations which are accrued or reserved against in the
Company's financial statements (or reflected in the notes thereto) included in
the Company's Quarterly Report on Form 10-Q for the nine months ended September
30, 1997 or disclosed in Section 5.10 of the Company Disclosure Letter or which
were incurred after September 30, 1997 in the ordinary course of business and
consistent with past practices or in connection with the transactions
contemplated by this Agreement, the Company and the Company Subsidiaries do not
have any liabilities or obligations (whether absolute, accrued, contingent or
otherwise) of a nature required by GAAP to be reflected in a consolidated
balance sheet (or reflected in the notes thereto) of the Company.

                 Section 5.11     No Default.  Except as set forth in Section
5.11 of the Company Disclosure Letter, neither the Company nor any of the
Company Subsidiaries is in violation or breach of, or default under (and no
event has occurred which with notice or the lapse of time or both would
constitute a violation or breach of, or a default under) any term, condition or
provision of (a) its Articles or Certificate of Incorporation, as the case may
be, or Bylaws, (b) any note, bond, mortgage, deed of trust, security interest,
indenture, license, agreement, plan, contract, lease, commitment or other
instrument or obligation to which the Company or any of the Company
Subsidiaries is a party or by which they or any of their properties or assets
may be bound or affected, (c) any order, writ, injunction, decree, statute,
rule or regulation applicable to the Company or any of the Company Subsidiaries
or any of their properties or assets, or (d) any permit, license, governmental
authorization, consent or approval necessary for the Company or any of the
Company Subsidiaries to conduct their respective businesses as currently
conducted, except in the case of clauses (b), (c) and (d) above for breaches,
defaults or violations which would not individually or in the aggregate have a
Company Material Adverse Effect.





                                       22
<PAGE>   32
                 Section 5.12     Taxes.    Except as set forth in the
Company's Annual Report on Form 10-K for the year ended December 31, 1996 or
Section 5.12 of the Company Disclosure Letter:

                 (a)      the Company and the Company Subsidiaries have (i)
duly filed (or there has been filed on their behalf) with the appropriate
governmental authorities all Tax Returns required to be filed by them on or
prior to the date hereof, and (ii) duly paid in full or made provision in
accordance with GAAP (or there has been paid or provision has been made on
their behalf) for the payment of all Taxes for all periods or portions thereof
ending through the date hereof;

                 (b)      no federal, state, local or foreign audits or other
administrative proceedings or court proceedings are presently pending with
regard to any Taxes or Tax Returns of the Company or any Company Subsidiary
wherein an adverse  determination or ruling in any one such proceeding or in
all such proceedings in the aggregate would have a Company Material Adverse
Effect;

                 (c)      none of the federal income Tax Returns of the Company
and each Company Subsidiary  has been examined by the Internal Revenue Service
for any period.  Neither the Company nor any of the Company Subsidiaries has
granted any requests, agreements, consent or waivers to extend the statutory
period of limitations applicable to the assessment of any Taxes with respect to
any Tax Returns of the Company or any of the Company Subsidiaries;

                 (d)      neither the Company nor any Company Subsidiary is a
party to any tax sharing, tax indemnity (including, without limitation, any tax
indemnification provision of any acquisition or disposition agreement) or other
agreement or arrangement with respect to Taxes;

                 (e)      none of Company or any of the Company Subsidiaries
has been a member of any affiliated group within the meaning of Section 1504(a)
of the Code, or any similar affiliated or consolidated group for tax purposes
under state, local or foreign law (other than a group the common parent of
which is the Company), or has any liability for the Taxes of any person (other
than Company and the Company Subsidiaries) under Treasury Regulations Section
1.1502- 6 or any similar provision of state, local or foreign law as a
transferee or successor, by contract or otherwise;

                 (f)      neither Company nor any of the Company Subsidiaries
has made any change in accounting methods, received a ruling from any taxing
authority or signed an agreement with any taxing authority which is reasonably
likely to have a Company Material Adverse Effect;





                                       23
<PAGE>   33
                 (g)      Company and each of the Company Subsidiaries have
complied in all respects with all applicable laws, rules and regulations
relating to the payment and withholding of Taxes and have, within the time and
the manner prescribed by law, withheld wages and paid over to the proper
governmental authorities all amounts required to be so withheld and paid over
under applicable laws;

                 (h)      neither Company nor any of the Company Subsidiaries
has, with regard to any assets or property held, acquired or to be acquired by
any of them, filed a consent to the application of Section 341(f) of the Code,
or agreed to have Section 341(f)(2) of the Code apply to any disposition of a
subsection (f) asset (as such term is defined in Section 341(f)(4) of the Code)
owned by Company or any of its Subsidiaries.

                 (i)      "Taxes" shall mean all income, gross income, gross
receipts, premium, sales, use, transfer, franchise, profits, withholding,
payroll, employment, excise, property and windfall profits taxes, and all other
taxes or similar governmental charges, together with any interest and any
penalties, additions to tax or additional amounts applicable thereto.  "Tax
Returns" shall mean all federal, state, local and foreign tax returns,
declarations, statements, reports, schedules, forms and information returns and
any amendments to any of the foregoing relating to Taxes.

                 Section 5.13     Title to Property.  (a)  Except as set forth
in Section 5.13(a) of the Company Disclosure Letter, each of the Company and
the Company Subsidiaries (i) has good and valid title to all of its properties,
assets and other rights that do not constitute real property, free and clear of
all Encumbrances, except for such Encumbrances that do not, individually or in
the aggregate, have a Company Material Adverse Effect, and (ii) owns, has valid
leasehold interests in or valid contractual rights to use, all of the assets,
tangible and intangible, used by, or necessary for the conduct of, its
business, except where the failure to have such valid leasehold interests or
such valid contractual rights do not, individually or in the aggregate, have a
Company Material Adverse Effect.

                 (b)      Neither the Company nor any of the Company
Subsidiaries owns any real property.   Section 5.13(b) of the Company
Disclosure Letter sets forth a list, which is accurate and complete in all
material respects, of each lease under which the Company or any of the Company
Subsidiaries is a tenant, and the Company has made a true and complete copy of
each such lease available to Purchaser.  The Company and each Company
Subsidiary is in peaceful and undisturbed possession of the space and/or estate
under each lease under which it is a tenant, and there are no material defaults
by it as tenant thereunder.

                 Section 5.14     Compliance with Laws; Certificates of
Authority; Permits and Licenses.   (a)  The business of the Company and each of
the Company





                                       24
<PAGE>   34
Subsidiaries is being conducted in compliance in all material respects with all
applicable laws, including, without limitation, all insurance, health
maintenance organization ("HMO") and prepaid dental plan codes, laws,
ordinances, rules, regulations, decrees and orders of any Governmental Entity,
and any other codes, laws, ordinances, rules, regulations, decrees and orders
of any Governmental Entity relating to the offer and sale of dental care
products, plans or services (including the practice of dentistry), the
recruitment of dentists or dental offices in connection with the offer and sale
of such products, plans or services, the marketing of any such products, plans
or services to potential purchasers, patients or subscribers thereto, or any
joint venture, cooperative arrangement or business relationship with any other
party relating to the foregoing,  and all material notices, reports, documents
and other information required to be filed thereunder within the last three
years were properly filed in all material respects and were in compliance in
all material respects with such laws.

                 (b)      The Company, and each of the Company  Subsidiaries,
has all certificates of authority, permits and licenses, including, without
limitation, insurance, HMO and dental care and practice licenses, the use and
exercise of which are necessary for the conduct of its business as now
conducted, other than such certificates of authority, permits and licenses,
including without limitation, insurance, HMO and dental care and practice
licenses, the absence of which would not, individually or in the aggregate, be
reasonably expected to have a Company Material Adverse Effect.  The business of
the Company and each of the Company  Subsidiaries has been and is being
conducted in compliance, in all material respects, with all such certificates
of authority, permits and licenses, including, without limitation, insurance,
HMO and dental care and practice licenses.  To the  knowledge of the Company,
all such certificates of authority, permits and licenses, including, without
limitation, insurance, HMO and dental care and practice licenses, are in full
force and effect, and there is no proceeding or investigation pending or
threatened which would reasonably be expected to lead to the revocation,
amendment, failure to renew, limitation, suspension or restriction of any such
permit or insurance license.  Section 5.14(b) of the Company Disclosure Letter
sets forth a list and description of each such certificate of authority, permit
or license.

                 (c)      The business of the Company that is conducted through
Oracare Consultants, Inc., OraCare DPO, Inc. and UDC Services, Inc.
(collectively, together with Oracare Dental Associates, P.A., the "Oracare
Entities") and the Company's arrangement with Oracare Dental Associates, P.A.
and its shareholder comply in all material respects with all applicable laws
(such business and arrangements, the Company's "Oracare Business").  The
operation of the Oracare Business by the Oracare Entities, individually and in
the aggregate, complies in all material respects with all applicable laws.





                                       25
<PAGE>   35
                 Section 5.15     Regulatory Filings.  The Company has made
available for inspection by Purchaser complete copies of all material
registrations, filings and submissions made since January 1, 1996 by the
Company or any of the Company Subsidiaries with any Governmental Entity and any
reports of examinations issued since January 1, 1996 by any such Governmental
Entity that relate to the Company or any of the Company Subsidiaries.  The
Company and the Company Subsidiaries have filed all reports, statements,
documents, registrations, filings or submissions required to be filed by any of
them with any Governmental Entity, except where the failure to file, in the
aggregate, would not have a Company Material Adverse Effect; and, to the
knowledge of the Company, all such reports, statements, documents,
registrations, filings or submissions were in all material respects true,
complete and accurate when filed.

                 Section 5.16     Investments.  All of the securities and other
investments  of the Company and the Company Subsidiaries are invested in (a)
corporate bonds rated no lower than Baa3 by Moody's or BBB- by S&P, (b)
commercial paper rated A1 or B1 by Moody's, (c) U.S. government bonds or (d)
money market funds issued by U.S.  commercial banks having net assets of at
least $5 billion.

                 Section 5.17     Reserves.  The aggregate reserves of the
Company Insurance Subsidiaries as recorded in the Statutory Financial
Statements of the Company and the reserves or similar obligations of the
Company and the Company's non-insurance subsidiaries have been determined in
accordance with generally accepted actuarial principles consistently applied
(except as set forth therein).  Except as disclosed in Section 5.17 of the
Company Disclosure Letter, the insurance reserving practices and polices of the
Company and the Company Subsidiaries have not changed, in any material respect,
since December 31, 1996 and the results of the application of such practices
and policies are reflected in the Statutory Financial Statements of the Company
and the other financial statements of the Company and the Company Subsidiaries.
All reserves of the Company Insurance Subsidiaries set forth in the Statutory
Financial Statements of the Company are, to the best knowledge of the Company,
fairly stated in accordance with sound actuarial principles and meet the
requirements of the insurance laws of the applicable insurance authority,
except where the failure to so state such reserves or meet such requirements
would not have a Company Material Adverse Effect.  All other reserves of
similar obligations of the Company and the Company's non-insurance subsidiaries
meet the requirements of all applicable laws.

                 Section 5.18     Information in Proxy Statement/Prospectus and
Registration Statement.  The Proxy Statement/Prospectus (or any amendment
thereof or supplement thereto), at the date mailed to Company shareholders and
at the time of the Company Special Meeting, will not contain any untrue
statement of a material fact or omit to state any material fact required to be
stated therein or necessary in order to make the statements therein, in light
of the circumstances under which they are made,





                                       26
<PAGE>   36
not misleading, except that no representation is made by the Company with
respect to statements made therein based on information supplied by Purchaser
in writing for  inclusion in the Proxy Statement/Prospectus.  None of the
information supplied by the Company for inclusion or incorporation by reference
in the Registration Statement will, at the date it becomes effective and at the
time of the Company Special Meeting, contain any untrue statement of a material
fact or omit to state any material fact required to be stated therein or
necessary in order to make the statements therein, in light of the
circumstances under which they are made, not misleading.  The Proxy
Statement/Prospectus will comply in all material respects with the provisions
of the Exchange Act and the rules and regulations thereunder.

                 Section 5.19     Brokers.  Except as set forth in Section 5.19
of the Company Disclosure Letter, no person is entitled to any brokerage,
financial advisory, finder's or similar fee or commission payable by the
Company in connection with the transactions contemplated by this Agreement
based upon arrangements made by and on behalf of the Company.  Any such
brokerage, financial advisory, finder's or similar fees or commissions are
reasonable in relation to the services actually performed by such person.

                 Section 5.20     Employee Benefit Plans; ERISA.  (a)  Section
5.20(a) of the Company Disclosure Letter sets forth a complete and accurate
list of:  (i) all severance, employment, consulting, change of control,
retention and all other similar agreements between the Company or any Company
Subsidiary and any current or former employee, agent, independent contractor,
officer or director, (ii) all severance programs, policies and practices of the
Company and each of the Company Subsidiaries, (iii) all plans or arrangements
of the Company and each of the Company Subsidiaries relating to its respective
current or former employees,  agents, independent contractors, officers or
directors that contain change in control provisions, including in all cases any
and all amendments thereto, and (iv) all Company Benefit Plans.  For purposes
of this Agreement, "Company Benefit Plan" shall mean any bonus, pension,
post-retirement benefit, profit sharing, deferred compensation, incentive
compensation, stock ownership, stock purchase, stock option, phantom stock,
equity-based award, retirement, vacation, severance or termination pay,
disability, death benefit, hospitalization or other medical, dental, accident,
disability, life or other insurance, supplemental unemployment benefits, fringe
and other welfare benefit plan, program, policy, agreement or arrangement,
whether written or unwritten, and each other employee benefit plan, program,
agreement, arrangement or understanding providing benefits to any current or
former employee, agent, independent contractor, officer or director of the
Company or any of the Company Subsidiaries.

                 (b)      With respect to each Company Benefit Plan, to the
extent applicable, the Company and the Company Subsidiaries have heretofore
made available or have caused to be made available to Purchaser true and
complete copies of the





                                       27
<PAGE>   37
following documents: (i) a copy of each written Company Benefit Plan and a
summary of the essential terms of each unwritten Company Benefit Plan, (ii) a
copy of the most recent annual report on Form 5500 and actuarial report, if
required under the Employee Retirement Income Security Act of 1974, as amended
("ERISA"), (iii) a copy of the most recent Summary Plan Description required
under ERISA with respect thereto, (iv) if the Company Benefit Plan is funded
through a trust or any third party funding vehicle, a copy of the trust or
other funding agreement and the latest financial statements thereof, and (v)
the most recent determination letter received from the Internal Revenue Service
(the "IRS") with respect to each Company Benefit Plan intended to qualify under
Section 401 of the Code.

                 (c)      Except as set forth in Section 5.20(c) of the Company
Disclosure Letter, (i) with respect to the Company Benefit Plans, no event has
occurred and there exists no condition or set of circumstances in connection
with which the Company or any of the Company Subsidiaries could be subject to
any liability under ERISA, the Code or any other applicable law that,
individually or in the aggregate, would result in a material liability to the
Company or any of the Company Subsidiaries, (ii)  each Company Benefit Plan has
been administered substantially in accordance with its terms, and all the
Company Benefit Plans have been operated and are in material compliance with
the applicable provisions of ERISA, the Code and all other applicable laws and
the terms of all applicable collective bargaining agreements, (iii) with
respect to each plan treated as a qualified plan, the IRS has issued a
favorable determination letter with respect to the qualification of each such
Company Benefit Plan and its related trust, if any, and the IRS has not taken
any action to revoke any such letter, and (iv)  there are no pending or, to the
knowledge of the Company, threatened or anticipated actions, suits, claims,
assessments, complaints, proceedings or investigations of any kind in any court
or governmental agency with respect to any Company Benefit Plan (other than
routine claims for benefits).

                 (d)      Except as set forth in Section 5.20(d) of the Company
Disclosure Letter, (i) no Company Benefit Plan provides for medical benefits
(whether or not insured) to be made available with respect to current or former
employees, agents, officers, directors or independent contractors (or any
dependent of any of them) after retirement or other termination of service
(other than (x) coverage mandated by applicable law or (y) benefits the full
cost of which is borne by the current or former employee, agent, officer,
director or independent contractor) and (ii) and the consummation of the
transactions contemplated by this Agreement will not (x) entitle any current or
former employee, agent, independent contractor, director or officer of the
Company or any of the Company Subsidiaries or any ERISA Affiliate to severance
pay, unemployment compensation, golden parachute payment, or any other payment,
(y) accelerate the time of payment or vesting, or increase the amount of
compensation due any such employee, agent, independent contractor, director or
officer, or (z) constitute a "change in control" under any Company Benefit
Plan.





                                       28
<PAGE>   38
                 (e)      Section 5.20(e) of the Company Disclosure Letter sets
forth a complete and accurate list of all Company Stock Options outstanding as
of the date of this Agreement and the exercise prices thereof.

                 Section 5.21     Labor and Employee Relations.  Except as
disclosed in Section 5.21 of the Company Disclosure Letter, none of the
employees of the Company or the Company Subsidiaries are represented by any
labor organization and, to the knowledge of the Company, no union claims to
represent these employees have been made.  Neither the Company nor any of the
Company Subsidiaries is a party to any collective bargaining or other labor
union contract applicable to persons employed by the Company or any of the
Company Subsidiaries, and no collective bargaining agreement is being
negotiated by the Company or Company Subsidiaries.  There is no labor dispute,
strike or work stoppage against the Company or Company Subsidiaries pending, or
to the knowledge of the Company, threatened that may interfere with the
respective business activities of the Company or any of the Company
Subsidiaries.  To the knowledge of the Company, the Company and Company
Subsidiaries are not, and have not been, engaged in any unfair labor practices
as defined in the National Labor Relations Act or similar applicable law,
ordinance or regulation, nor is there pending any unfair labor practice charge.

                 Section 5.22     Environmental Matters.  (a)       Except as
disclosed in Section 5.22 of the Company Disclosure Letter , to the knowledge
of the Company, (i) each of the Company and the Company Subsidiaries is and has
been in compliance in all respects with and, has no existing liabilities under,
and (ii)  neither the Company nor any of the Company Subsidiaries  has received
any written claims or notices from any person that the Company or any of the
Company Subsidiaries has not been in compliance in all respects with, or has
any existing liabilities under,  applicable laws, rules, regulations, common
law, ordinances, decrees, orders and other binding legal requirements relating
to pollution, the preservation of the environment, hazardous substance and
waste handling, storage or disposal, or exposure of persons to materials in the
environment or the work place (together "Environmental Laws") with respect to
property owned or operated by the Company or any of the Company Subsidiaries,
except for such non-compliance or liabilities that would not be reasonably
likely to have a Company Material Adverse Effect.  Except as disclosed in
Section 5.22 of the Company Disclosure Letter, neither the Company nor any of
the Company Subsidiaries is subject to any decrees, orders, decisions of
arbitrators or judgments that impose requirements under Environmental Laws,
restrictions under Environmental Laws, liabilities under Environmental Laws, or
penalties for violations of Environmental Laws or the aforementioned
requirements or restrictions, except where such requirements, restrictions,
liabilities, or penalties would not be reasonably likely to have a Company
Material Adverse Effect.





                                       29
<PAGE>   39
                 (b)      Except as disclosed in Section 5.22 of the Company
Disclosure Letter, with respect to currently owned property and all property
formerly owned, leased or operated by the Company or any of the Company
Subsidiaries, including foreclosure property, to the knowledge of the Company,
there are no past or present actions, conditions or occurrences that could form
the basis of any claim under Environmental Laws against, or liability under
such laws of, the Company or any of the Company Subsidiaries, except for such
claims or liabilities which in the aggregate would not reasonably be expected
to result in a Company Material Adverse Effect.

                 Section 5.23     Opinion of Financial Advisor.  The Board of
Directors of the Company has received an opinion from  BT Alex. Brown
Incorporated ("BT Alex. Brown") dated as of the date of this Agreement, to the
effect that the Merger Consideration to be received by the holders of the
Company Common Stock pursuant to the Merger is fair to such holders from a
financial point of view, and the Company has received the permission of BT
Alex. Brown to include such opinion in its entirety as an exhibit in the Proxy
Statement/Prospectus.

                 Section 5.24     Contracts.  (a) Section 5.24 of the Company
Disclosure Letter sets forth a list of contracts, arrangements or
understandings (written or oral) ("Contracts") to which the Company or any of
the Company Subsidiaries is a party or by which it or any of them is bound
which:

                 (i)      contain covenants limiting the freedom of the Company
or any of the Company Subsidiaries to engage in any line of business in any
geographic area or to compete with any person or entity or restricting the
ability of the Company Subsidiaries to acquire equity securities of any person
or entity;

                 (ii)     are employment, consulting or severance contracts
applicable to any employee, consultant or shareholder of the Company or the
Company Subsidiaries, including without limitation contracts to employ
executive officers and other contracts with officers or directors of the
Company or any of the Company Subsidiaries, other than any such contract which
by its terms is terminable by the Company or any of the Company Subsidiaries on
not more than 60 days' notice without liability;

                 (iii)    is a management, marketing (including marketing
contracts with HMO's), administrative services, data processing, software
licensing or third party administration Contract; or

                 (iv)     are other contracts (excluding dental provider
contracts) which were made in the ordinary course of business and either
involve an obligation on the part of the Company or a Company Subsidiary of
more than $50,000 per annum or could result, upon the breach thereof, in
damages or losses of more than $50,000 other than consequential damages or
damages resulting from liabilities sounding in tort (the





                                       30
<PAGE>   40
Contracts in clauses (i)-(iv), together with the Contracts filed as exhibits to
the Company SEC Reports, collectively, the "Company Contracts").  All contracts
entered into by the Company or any Company Subsidiary in connection with an
acquisition of another entity or block of business by the Company or any of the
Company Subsidiaries have been filed as exhibits to the Company SEC Reports.

                 (b)      With respect to each of the Company Contracts, to the
knowledge of the Company, except as disclosed in Section 5.24 of the Company
Disclosure Letter:  (i) such contract is (assuming due power and authority of,
and due execution and delivery by, the other party or parties thereto) valid
and binding upon each party thereto and is in full force and effect; (ii) there
is no material default or claim of material default thereunder and no event has
occurred which, with the passage of time or the giving of notice (or both),
would constitute a material default thereunder, or would permit material
modification, acceleration or termination thereof; and (iii) the consummation
of the transactions contemplated by this Agreement will not give rise to a
right of the other party or parties thereto to terminate such contract or
impose liability under the terms thereof on the Company or any of the Company
Subsidiaries; provided, that this representation shall not be deemed to give
assurances regarding rights of termination based on any decrease in insurance
industry ratings of the Company or the Company Subsidiaries resulting from the
declaration and/or payment of the extraordinary dividend.

                 (c)      The Company has delivered to Purchaser a true,
complete and accurate list of all special agreements or arrangements between
the Company or any Company Subsidiary and any dentist, dental practice or
dental association or company under which the Company or any Company Subsidiary
makes or is or will be required to make special payments to any such person.

                 Section 5.25     Intellectual Property.  The Company and/or
each of the Company Subsidiaries owns, or is licensed or otherwise possesses
legally enforceable rights to use all patents, trademarks, trade names, service
marks, copyrights, and any applications therefor, technology, know-how,
computer software programs or applications, and tangible or intangible
proprietary information or materials that are used in the business of the
Company and the Company Subsidiaries as currently conducted, except for any
such failures to own, be licensed or possess that are not, individually or in
the aggregate, reasonably likely to have a Company Material Adverse Effect, and
to the knowledge of the executive officers of the Company all patents,
trademarks, trade names, service marks and copyrights held by the Company
and/or its Subsidiaries are valid and subsisting.  The executive officers of
the Company do not know of any grounds for any claim against the use by the
Company or any of the Company Subsidiaries, of any trademarks, trade names,
trade secrets, copyrights, patents, technology, know-how or computer software
programs and applications used





                                       31
<PAGE>   41
in the business of the Company or any of the Company Subsidiaries as currently
conducted or as proposed to be conducted.

                 Section 5.26     Voting Requirements; Takeover Statutes.  (a)
The affirmative vote of the holders of a majority of the voting power of all
outstanding shares of the Company Common Stock, voting as a single class, at
the Company Stockholders Meeting (the "Company Stockholder Approval") is the
only vote of the holders of any class or series of the Company's capital stock
necessary to approve and adopt this Agreement and the transactions contemplated
by this Agreement.

                 (b)      The Board of Directors of the Company has unanimously
approved the terms of this Agreement and the Stockholder Agreement and the
consummation of the Merger and the other transactions contemplated by this
Agreement and the Stockholder Agreement, and such approval is sufficient to
render inapplicable to the Merger and the other transactions contemplated by
this Agreement and the Stockholder Agreement the provisions of Section 203 of
the DGCL.  To the best of the Company's knowledge, no other state takeover
statute or similar statute or regulation applies or purports to apply to the
Merger, this Agreement, the Stockholder Agreement or any of the transactions
contemplated by this Agreement or the Stockholder Agreement and no provision of
the certificate of incorporation, by-laws or other governing instruments of the
Company or any of the Company Subsidiaries would, directly or indirectly,
restrict or impair the ability of Purchaser to vote, or otherwise to exercise
the rights of a stockholder with respect to, shares of the Company and the
Company Subsidiaries that may be acquired or controlled by Purchaser.

                 Section 5.27     Disclosure.  No representation or warranty by
the Company or the Company Subsidiaries in this Agreement, including the
Company Disclosure Letter, and no statement contained in the Company SEC
Reports and the Statutory Financial Statements of the Company, contains or will
contain any untrue statement of a material fact or omits or will omit to state
any material fact necessary, in light of the circumstances under which it was
made, to make the statements herein or therein not misleading.  There is no
fact known to the Company which would reasonably be expected to have a Company
Material Adverse Effect which has not been set forth in the Company SEC
Reports, the Statutory Financial Statements of the Company or in this
Agreement, including the Company Disclosure Letter.


                                   ARTICLE VI
                     CONDUCT OF BUSINESS PENDING THE MERGER

                 Section 6.1      Conduct of Business by the Company Pending
the Merger.  From the date hereof until the Effective Time, unless Purchaser
shall otherwise agree in writing, or except as set forth in the Company
Disclosure Letter or





                                       32
<PAGE>   42
as otherwise contemplated by this Agreement, the Company and the Company
Subsidiaries shall conduct their respective businesses in the ordinary course
consistent with past practice and shall use all reasonable efforts to preserve
intact their business organizations and relationships with third parties
(including but not limited to their respective relationships with
policyholders, members of pre-paid dental plans, insureds, dentists and agents)
and to keep available the services of their present officers and key employees,
subject to the terms of this Agreement.  Except as set forth in the Company
Disclosure Letter or as otherwise provided in this Agreement, from the date
hereof until the Effective Time, without the prior written consent of
Purchaser:

                 (a)      the Company shall not adopt or propose any change in
its  Certificate of Incorporation or Bylaws;

                 (b)      the Company shall not declare, set aside or pay any
dividend or other distribution with respect to or acquire any shares of capital
stock of the Company, or split, combine or reclassify any of the Company's
capital stock, and the Company and the Company Subsidiaries shall not
repurchase, redeem or otherwise acquire any shares of capital stock or other
securities of, or other ownership interests in, the Company;

                 (c)      the Company shall not, and shall not permit any
Company Subsidiary to, merge or consolidate with any other person or (except in
the ordinary course of business) acquire a material amount of assets of any
other person;

                 (d)      the Company shall not, and shall not permit any
Company Subsidiary to, enter into, or terminate, any material contract,
agreement, commitment, or understanding other than agreements entered into with
unaffiliated third parties, on an arms-length basis and in the ordinary course
of business constituting either (1) employer group agreements at premium rates
and for terms comparable to its most recent employer group agreements, (2)
dental provider agreements on terms comparable with its existing agreements of
such nature and (3) marketing affiliation and sales agreements on terms
comparable with its existing agreements of such nature;

                 (e)      the Company shall not, and shall not permit any
Company Subsidiary to, sell, lease, license or otherwise surrender, relinquish
or dispose of (i) any material facility owned or leased by the Company or any
Company Subsidiary or (ii) any assets or property which are material to the
Company and the Company Subsidiaries, taken as a whole, except pursuant to
existing contracts or commitments (the terms of which have been disclosed to
Purchaser prior to the date hereof), or in the ordinary course of business
consistent with past practice;

                 (f)      the Company shall not, and shall not permit any
Company Subsidiary to, settle any material audit, make or change any material
Tax election or





                                       33
<PAGE>   43
file amended Tax Returns unless required by law and the Company notifies
Purchaser at least five days prior to the date any such action is taken or such
settlement results in a refund to the Company;

                 (g)      the Company and the Company Subsidiaries shall not
issue any capital stock other than pursuant to Company Stock Options or the
Company Warrants or other securities or enter into any amendment of any
material term of any outstanding security of the Company, and the Company and
the Company Subsidiaries shall not incur any material indebtedness except in
the ordinary course of business pursuant to existing credit facilities or
arrangements, amend or otherwise increase, accelerate the payment or vesting of
the amounts payable or to become payable under or fail to make any required
contribution to, any Company Benefit Plan (as hereinafter defined) or
materially increase any non-salary benefits payable to any employee or former
employee, except in the ordinary course of business consistent with past
practice or as otherwise permitted by this Agreement;

                 (h)      the Company shall not, and shall not permit any
Company Subsidiary to (i) grant Options; (ii) grant any increase in the
compensation, bonus, severance, termination pay or other benefits of any former
or current employee, agent, consultant, officer or director of the Company or
any Company Subsidiary; provided, however, that increases in the ordinary
course of business consistent with past practice in the compensation of
employees, consultants or agents, who are not officers or directors, shall be
permitted; (iii) enter into or amend any employment agreement, deferred
compensation, consulting, severance, termination, indemnification or any other
such agreement with any such former or current employee, agent, consultant,
officer or director of the Company or any Company Subsidiary; or (iv) amend,
adopt or terminate any Company Benefit Plan, except as may be required to
retain qualification of any such plan under Section 401(a) of the Code;

                 (i)      the Company shall not change any method of accounting
or accounting practice by the Company or any Company Subsidiary, except for any
such required change in GAAP or the State Statutory Accounting Principles;

                 (j)      the Company shall not, and shall not permit any
Company Subsidiary to, take any action that would reasonably be expected to
cause the Merger to fail to qualify as a reorganization within the meaning of
Section 368(a) of the Code;

                 (k)      except as contemplated by Section 6.3, the Company
shall not permit any Company Insurance Subsidiary to conduct transactions in
Company Investments except in compliance with the investment policies of such
Company Insurance Subsidiary as previously disclosed to Purchaser and in effect
on the date hereof and all applicable insurance laws and regulations;





                                       34
<PAGE>   44
                 (l)      the Company shall not, and shall not permit any
Company Subsidiary to, enter into any agreement to purchase, or to lease for a
term in excess of one year, any real property, provided that the Company, or
any Company Subsidiary,  may as a tenant, or a landlord, renew any existing
lease pursuant to an option granted prior to the date hereof;

                 (m)      the Company shall not, and shall not permit any
Company Subsidiary to, agree or commit to do any of the foregoing;

                 (n)      except to the extent necessary to comply with the
requirements of applicable laws and regulations, the Company shall not, and
shall not permit any Company Subsidiary to, (i) take, or agree or commit to
take, any action that would make any representation and warranty of the Company
hereunder inaccurate in any material respect at, or as of any time prior to, the
Effective Time, (ii) omit, or agree or commit to omit, to take any action
necessary to prevent any such representation or warranty from being inaccurate
in any material respect at any such time, provided however, that the Company
shall be permitted to take or omit to take such action which (without any
uncertainty) can be cured, and in fact is cured, at or prior to the Effective
Time or (iii) take, or agree or commit to take, any action that would result in,
or is reasonably likely to result in, any of the conditions of the Merger set
forth in Article VIII not being satisfied;

                 (o)      the Company shall not release any third party from
its obligations, or grant any consent, under any existing standstill provision
relating to any Takeover Proposal (as hereinafter defined) or otherwise under
any confidentiality or other agreement, or fail to fully enforce any such
agreement; and

                 (p)      none of the Company Insurance Subsidiaries shall make
any change in its underwriting, claims management or reserving practices.

                 Section 6.2      Conduct of Business by Purchaser Pending the
Merger.  From the date hereof until the Effective Time, unless the Company
shall otherwise agree in writing, or except as set forth in the Purchaser
Disclosure Letter or as otherwise contemplated by this Agreement, (a)
Purchaser, Sub and the Purchaser Subsidiaries shall conduct their respective
businesses in all material respects in the ordinary course consistent with past
practice and shall use all reasonable efforts to substantially preserve intact
their business organizations and relationships with third parties (including
but not limited to their respective relationships with policyholders, insureds,
agents, underwriters, brokers and investment customers) and to keep available
the services of their present officers and key employees, subject to the terms
of this Agreement; and (b) except to the extent necessary to comply with the
requirements of applicable laws and regulations, Purchaser shall not, and shall
not permit Sub or any Purchaser Subsidiary to, (i) take, or agree or commit to
take, any action that would 





                                       35
<PAGE>   45

make any representation and warranty of Purchaser hereunder inaccurate, in any
material respect, at, or as of any time prior to, the Effective Time, (ii) omit,
or agree or commit to omit, to take any action necessary to prevent any such
representation or warranty from being inaccurate, in any material respect, at
any such time, provided however that Purchaser shall be permitted to take or
omit to take such action which (without any uncertainty) can be cured, and in
fact is cured, at or prior to the Effective Time, (iii) take any action that
would reasonably be expected to cause the Merger to fail to qualify as a
reorganization within the meaning of Section 368(a) of the Code, (iv) take, or
agree or commit to take, any action that would result in, or is reasonably
likely to result in, any of the conditions of the Merger set forth in Article
VIII not being satisfied or (v) declare, set aside or pay any dividend or other
distribution with respect to any shares of capital stock of Purchaser, other
than regular quarterly dividends not in excess of $0.25 per share.

                 Section 6.3      Investment Restrictions.  From the date
hereof until the Effective Time, the Company and each Company Subsidiary shall
invest available cash only in (a) corporate bonds (other than bonds issued by
public utilities) rated no lower than Baa3 by Moody's or BBB - by S&P, (b)
commercial paper rated A1 or B1 by Moody's or (c) other securities or
investments agreed to in writing by Purchaser ("Permitted Investments");
provided, however, that nothing in this Section 6.3 shall require any Company
Insurance Subsidiary to make any investment other than in compliance with the
investment policies of such Company Insurance Subsidiary and all insurance laws
and regulations applicable thereto.


                                  ARTICLE VII
                             ADDITIONAL AGREEMENTS

                 Section 7.1      Access and Information.  The Company and
Purchaser shall each afford to the other and to the other's financial advisors,
legal counsel, accountants, consultants, financing sources, and other
authorized representatives access during normal business hours throughout the
period prior to the Effective Time to all of its books, records, properties,
plants and personnel and, during such period, each shall furnish as promptly as
practicable to the other (a) a copy of each report, schedule and other document
filed or received by it pursuant to the requirements of federal securities
laws, and (b) all other information as such other party reasonably may request,
provided that neither party shall disclose to the other any competitively
sensitive information and no investigation pursuant to this Section 7.1 shall
affect any representations or warranties made herein or the conditions to the
obligations of the respective parties to consummate the Merger.  Each party
shall continue to abide by the terms of the confidentiality agreement between
Protective Life Insurance Company ("PLIC") and the Company, dated January 6,
1998 and the Confidentiality Agreement





                                       36
<PAGE>   46
between Purchaser and the Company, dated March 5, 1998 (together, the
"Confidentiality Agreement").

                 Section 7.2      No Solicitation.  (a)  The Company shall not,
nor shall it permit any of the Company Subsidiaries to, nor shall it authorize
or permit any officer, director or employee of or any investment banker,
attorney or other advisor or representative of, the Company or any of the
Company Subsidiaries to, directly or indirectly, (i) solicit, initiate or
encourage the submission of any Takeover Proposal (as defined in Section
7.2(e)), (ii) enter into any agreement with respect to any Takeover Proposal or
give any approval of the type referred to in Section 5.26(b) with respect to
any Takeover Proposal or (iii) continue or participate in any discussions or
negotiations regarding, or furnish to any person any information with respect
to, or take any other action to facilitate any inquiries or the making of any
proposal that constitutes, or may reasonably be expected to lead to, any
Takeover Proposal; provided, however, that if  the Board of Directors of the
Company determines in good faith,  after consultation with outside counsel,
that it is necessary to do so in order to comply with its fiduciary duties to
the Company's stockholders under applicable law, the Company may, in response
to an unsolicited Takeover Proposal of the sort referred to in clause (x) of
Section 7.2(e) that involves consideration to the Company's stockholders that
the Company's Board of Directors reasonably believes, after receiving advice
from the Company's independent financial advisor, is superior to the
consideration provided for in the Merger, and subject to compliance with
Section 7.2(c), (x) furnish information with respect to the Company pursuant to
a customary confidentiality agreement to any person making such proposal and
(y) participate in negotiations regarding such proposal.  Without limiting the
foregoing, it is understood that any violation of the restrictions set forth in
the preceding sentence by any officer, director or employee of the Company or
any of the Company Subsidiaries or any investment banker, attorney or other
advisor or representative of the Company or any of the Company Subsidiaries,
whether or not such person is purporting to act on behalf of the Company or any
of the Company Subsidiaries or otherwise, shall be deemed to be a breach of
this Section 7.2(a) by the Company.

                 (b)      Neither the Board of Directors of the Company nor any
committee thereof shall (x) withdraw or modify, or propose to withdraw or
modify, in a manner adverse to Purchaser, the approval or recommendation by
such Board of Directors or such committee of this Agreement or the Merger or
(y) approve or recommend, or propose to approve or recommend, any takeover
proposal except in connection with a  Superior Proposal (as defined in Section
7.2(e)) and then only at or after the termination of this Agreement pursuant to
and in accordance with Section 9.3.

                 (c)      In addition to the obligations of the Company set
forth in paragraphs (a) and (b) of this Section 7.2, the Company promptly shall
advise Purchaser orally and in writing of any request for information or of any
Takeover





                                       37
<PAGE>   47
Proposal or any inquiry with respect to or which could reasonably be expected
to lead to any Takeover Proposal, the identity of the person making any such
request, Takeover Proposal or inquiry and all the terms and conditions thereof
and promptly shall provide Purchaser with a true and complete copy of such
request, Takeover Proposal or inquiry, if in writing.  The Company shall keep
Purchaser fully informed of the status and details (including amendments or
proposed amendments) of any such request, Takeover Proposal or inquiry and
shall give Purchaser three business days' advance notice of any information to
be supplied to the person making such request, proposal or inquiry.

                 (d)      Nothing contained in this Section 7.2 shall prohibit
the Company from taking and disclosing to its stockholders a position
contemplated by Rule 14e-2(a) promulgated under the Exchange Act; provided,
however, neither the Company nor its Board of Directors nor any committee
thereof shall, except as permitted by Section 7.2(b), withdraw or modify, or
propose to withdraw or modify, its position with respect to the Merger or
approve or recommend, or propose or approve or recommend, a Takeover Proposal.

                 (e)      As used in this Agreement:  "Superior Proposal" means
a bona fide written Takeover Proposal (x) to acquire, directly or indirectly,
for consideration consisting of cash and/or securities, more than 50% of the
shares and/or voting power of Company Common Stock then outstanding or all or
substantially all the assets of the Company, (y) otherwise on terms which the
Board of Directors of the Company decides in its good faith reasonable judgment
to be more favorable to the Company's stockholders than the Merger (after
receiving advice from the Company's independent financial advisor that the
consideration provided for in such proposal is superior to the consideration
provided for in the Merger), for which financing, to the extent required, is
then committed or which, in the good faith reasonable judgment of the Board of
Directors, after receiving advice from the Company's independent financial
advisor, is reasonably capable of being obtained by such third party and (z)
which the Board of Directors determines, in its good faith reasonable judgment,
is reasonably likely to be consummated without undue delay; and "Takeover
Proposal" means any written proposal for a merger, consolidation or other
business combination involving the Company or any proposal or offer to acquire
in any manner, directly or indirectly, an equity interest in, any more than 15%
of the voting power of, or a substantial portion of the assets of, the Company
and its subsidiaries, taken as a whole, other than the transactions
contemplated by this Agreement which proposal may contain customary conditions
and qualifications.

                 Section 7.3      Filings; Other Action.  Subject to the terms
and conditions herein provided, as promptly as practicable, the Company,
Purchaser and Sub shall: (i) promptly make all filings and submissions under
the HSR Act and all filings required by the insurance regulatory authorities in
Arizona and in Oklahoma,





                                       38
<PAGE>   48
and deliver notices and consents to jurisdiction to state insurance
departments, each as reasonably may be required to be made in connection with
this Agreement and the transactions contemplated hereby, (ii) use all
reasonable efforts to cooperate with each other in (A) determining which
filings are required to be made prior to the Effective Time with, and which
material consents, approvals, permits, notices or authorizations are required
to be obtained prior to the Effective Time from, governmental or regulatory
authorities of the United States, the several states or the District of
Columbia, the Commonwealth of Puerto Rico and foreign jurisdictions in
connection with the execution and delivery of this Agreement and the
consummation of the transactions contemplated hereby and (B) timely making all
such filings and timely seeking all such consents, approvals, permits, notices
or authorizations, and (iii) use all reasonable efforts to take, or cause to be
taken, all other action and do, or cause to be done, all other things necessary
or appropriate to consummate the transactions contemplated by this Agreement as
soon as practicable.  In connection with the foregoing, the Company will
provide Purchaser, and Purchaser will provide the Company, with copies of
correspondence, filings or communications (or memoranda setting forth the
substance thereof) between such party or any of its representatives, on the one
hand, and any governmental agency or authority or members of their respective
staffs, on the other hand, with respect to this Agreement and the transactions
contemplated hereby.  Each of Purchaser and the Company acknowledge that
certain actions may be necessary with respect to the foregoing in making
notifications and obtaining clearances, consents, approvals, waivers or similar
third party actions which are material to the consummation of the transactions
contemplated hereby, and each of Purchaser and the Company agree to take such
action as is necessary to complete such notifications and obtain such
clearances, approvals, waivers or third party actions, provided, however, that
nothing in this Section 7.3 or elsewhere in this Agreement shall require any
party hereto to incur expenses in connection with the transactions contemplated
hereby which are not reasonable under the circumstances in relation to the size
of the transaction contemplated hereby or to require Purchaser, any Purchaser
Subsidiary, the Surviving Corporation, the Company or any Company Subsidiary to
hold separate or make any divestiture of a significant asset (including any
part of the Company's Oracare Business) or otherwise agree to any material
restriction on their operations (including any part of the Company's Oracare
Business) in order to obtain any waiver, consent or approval required by this
Agreement.

                 Section 7.4      Public Announcements.  Purchaser, on the one
hand, and the Company, on the other hand, agree that they will not issue any
press release or otherwise make any public statement or respond to any press
inquiry with respect to this Agreement or the transactions contemplated hereby
without the prior approval of the other party (which approval will not be
unreasonably withheld), except as may be required by applicable law.





                                       39
<PAGE>   49
                 Section 7.5      Stock Exchange Listing.  Purchaser shall as
promptly as reasonably practicable prepare and submit to the New York Stock
Exchange a listing application covering the shares of Purchaser Common Stock to
be issued in connection with the Merger and this Agreement, and shall use  its
best efforts to obtain, prior to the Effective Time, approval for the listing
of such shares, subject to official notice of issuance.

                 Section 7.6      Company Indemnification Provision.  (a)
Purchaser agrees that all rights to indemnification (and rights to advancement
of expenses) existing in favor of the present or former directors, officers,
employees, fiduciaries and agents of the Company or any of the Company
Subsidiaries (collectively, the "Indemnified Parties") as provided in the
Company's Restated Certificate of Incorporation or Bylaws or the certificate or
articles of incorporation, Bylaws or similar organizational documents of any of
the Company Subsidiaries as in effect as of the date hereof or pursuant to the
terms of any indemnification agreements entered into between the Company and
any of the Indemnified Parties with respect to matters occurring on or prior to
the Effective Time including, without limitation, the transactions contemplated
by this Agreement shall survive the Merger and shall continue in full force and
effect (without modification or amendment, except as required by applicable law
or except to make changes permitted by law that would enlarge the Indemnified
Parties' right of indemnification), to the fullest extent and for the maximum
term permitted by law, and shall be enforceable by the Indemnified Parties
against the Surviving Corporation and Purchaser.

                 (b) To the extent that Section 7.6(a) shall not serve to
indemnify and hold harmless an Indemnified Party, for a period of six years
after the Effective Time, the Surviving Corporation shall, subject to the terms
set forth herein, indemnify and hold harmless, to the fullest extent permitted
under applicable law (and the Surviving Corporation shall also advance expenses
as incurred to the fullest extent permitted under applicable law provided the
person to whom expenses are advanced provides an undertaking to repay such
advances if it is ultimately determined that such person is not entitled to
indemnification), each Indemnified Party against any costs or expenses
(including reasonable attorneys' fees), judgments, fines, losses, claims,
damages or liabilities (collectively, "Costs") incurred in connection with any
claim, action, suit, proceeding or investigation, whether civil, criminal,
administrative or investigative, arising out of or pertaining to the
transactions contemplated by this Agreement.  In the event any claim or claims
are asserted or made within such six-year period, all rights to indemnification
in respect of any such claim or claims shall continue until final disposition
of any and all such claims.


                 Section 7.7      Comfort Letters.  (a) Purchaser shall use all
reasonable efforts to cause Coopers & Lybrand L.L.P., Purchaser's independent
accountants, to





                                       40
<PAGE>   50
deliver to the Company a letter dated as of the date of the Proxy
Statement/Prospectus and addressed to the Company, in form and substance
reasonably satisfactory to the Company, in connection with the procedures
undertaken by them with respect to the financial statements and other financial
information of Purchaser contained in the Registration Statement and the other
matters contemplated by AICPA Statement No. 72 and customarily included in
comfort letters relating to transactions similar to the Merger.

                 (b)      The Company shall use all reasonable efforts to cause
Price Waterhouse LLP, the Company's independent accountants, to deliver to
Purchaser a letter dated as of the date of the Proxy Statement/Prospectus and
addressed to Purchaser, in form and substance reasonably satisfactory to
Purchaser, in connection with the procedures undertaken by them with respect to
the financial statements and other financial information of the Company and the
Company Subsidiaries contained in the Registration Statement and the other
matters contemplated by AICPA Statement No.  72 and customarily included in
comfort letters relating to transactions similar to the Merger.

                 Section 7.8      Employee Benefits.  For a period of at least
one (1) year following the Effective Time,  Purchaser shall cause the
Surviving Corporation or any of the Company Subsidiaries to  provide each
employee of the Company and the Company Subsidiaries who becomes an employee of
Purchaser and the Purchaser Subsidiaries at or immediately following the
Effective Time with benefits that, in the aggregate, are substantially
comparable to those provided under the employee benefits plans, within the
meaning of Section 3(3) of ERISA, maintained by the Company or the Company
Subsidiaries as of the Effective Time.  As used herein, "benefits" means
non-cash employee benefits only, and does not include wages, salaries, bonuses,
stock option, stock award or similar compensation.

                 Section 7.9      Tax Matters.  The parties intend the Merger
to qualify as a reorganization under Sections 368(a)(1)(A) and 368(a)(2)(D) of
the Code; each party and its affiliates shall use all reasonable efforts to
cause the Merger to so qualify; neither party nor any affiliate shall take any
action that would reasonably be expected to cause the Merger not to so qualify;
and the parties will take the position for all purposes that the Merger so
qualifies. The Company and Purchaser shall each reasonably cooperate in
connection with obtaining the opinions of special counsel described in Sections
8.2(b) and 8.3(b) including, without limitation, providing to special counsel
such representations that are reasonably required by special counsel to enable
them to render such opinions.

                 Section 7.10  Affiliates.  The Company shall use all
reasonable efforts to obtain and deliver to Purchaser prior to the Closing
executed letter agreements ("Affiliate Agreements") in the form attached as
Exhibit A hereto from all persons





                                       41
<PAGE>   51
who, in the reasonable judgment of the Company, may be deemed to be affiliates
of the Company under Rule 145 of the Securities Act.  For a period of at least
two years following the Effective Time, Purchaser or any successor issuer
thereto shall make available adequate current public information with respect
to itself, within the meaning of Rule 144(c) under the Securities Act.

                 Section 7.11     Additional Matters.  Subject to the terms and
conditions herein provided, each of the parties hereto agrees to use all
reasonable efforts to take, or cause to be taken, all action and to do, or
cause to be done, all things necessary, proper or advisable under applicable
laws and regulations to consummate and make effective the transactions
contemplated by this Agreement, including using all reasonable efforts to
obtain all necessary waivers, consents and approvals in connection with the
Governmental Requirements and any other third party consents and to effect all
necessary registrations and filings.  In case at any time after the Effective
Time any further action is necessary or desirable to carry out the purposes of
this Agreement, the proper officers and/or directors of Purchaser, Sub and the
Company shall take all such necessary action.


                                  ARTICLE VIII
                    CONDITIONS TO CONSUMMATION OF THE MERGER

                 Section 8.1      Conditions to Each Party's Obligation to
Effect the Merger.  The respective obligations of each party to effect the
Merger shall be subject to the satisfaction at or prior to the Effective Time
of the following conditions:

                 (a)      any waiting period applicable to the consummation of
the Merger under the HSR Act shall have expired or been terminated, and no
action shall have been instituted by the Department of Justice or Federal Trade
Commission challenging or seeking to enjoin the consummation of this
transaction, which action shall have not been withdrawn or terminated;

                 (b)      no statute, rule, regulation, executive order,
decree, ruling or preliminary or permanent injunction shall have been enacted,
entered, promulgated or enforced by any federal or state court or governmental
authority having jurisdiction which prohibits, restrains, enjoins or restricts
consummation of the Merger;

                 (c)      each of the Company, the Company Subsidiaries and
Purchaser shall have made such filings, and obtained such permits,
authorizations, consents, or approvals, required by Governmental Requirements
to consummate the transactions contemplated hereby, and the appropriate forms
shall have been executed, filed and approved as required by the  Governmental
Requirements;





                                       42
<PAGE>   52
                 (d)      this Agreement and the Merger shall have been adopted
and approved by the requisite vote of the shareholders of the Company in
accordance with the applicable provisions of the DGCL;

                 (e)      the Registration Statement shall have become
effective under the Securities Act and shall not be the subject of any stop
order or proceedings seeking a stop order; and

                 (f)      the shares of Purchaser Common Stock issuable to the
Company's shareholders pursuant to this Agreement shall have been authorized
for listing on the New York Stock Exchange upon official notice thereof.


                 Section 8.2      Conditions to Obligation of the Company to
Effect the Merger.  The obligation of the Company to effect the Merger shall be
subject to the satisfaction at or prior to the Effective Time of the following
additional conditions:

                 (a)      each of Purchaser and Sub shall have performed in all
material respects its obligations under this Agreement required to be performed
by it at or prior to the Effective Time; the representations and warranties of
Purchaser and Sub contained in this Agreement which are qualified with respect
to materiality shall be true and correct in all respects, and such
representations and warranties that are not so qualified shall be true and
correct in all material respects, in each case as of the date of this Agreement
and at and as of the Effective Time as if made at and as of such time (except
to the extent such representations and warranties specifically relate to an
earlier date, in which case as of such earlier date) except as contemplated by
the Purchaser Disclosure Letter and this Agreement; and the Company shall have
received a certificate of the Chairman of the Board, the President, or the
Chief Financial Officer of Purchaser as to the satisfaction of this condition;
and

                 (b)      the Company shall have received an opinion from
Strasburger & Price, L.L.P., special counsel to the Company, dated the
Effective Time, to the effect that, on the basis of certain facts,
representations and assumptions set forth in such opinion which are consistent
with the stated facts existing at the Effective Time, the Merger will be
treated for Federal income tax purposes as a reorganization within the meaning
of Section 368(a) of the Code, and that Purchaser, Sub and the Company will
each be a party to that reorganization within the meaning of Section 368(b) of
the Code.  In rendering the opinion described in the preceding sentence, such
counsel may require and rely upon representations contained in certificates of
officers of Purchaser, Sub and the Company and their respective subsidiaries.

                 Section 8.3      Conditions to Obligations of Purchaser and
Sub to Effect the Merger.  The obligations of Purchaser and Sub to effect the
Merger shall be subject





                                       43
<PAGE>   53
to the satisfaction at or prior to the Effective Time of the following
additional conditions:

                 (a)      the Company shall have performed in all material
respects its obligations under this Agreement required to be performed by it at
or prior to the Effective Time; and the representations and warranties of the
Company contained in this Agreement which are qualified with respect to
materiality shall be true and correct in all respects, and such representations
and warranties that are not so qualified shall be true and correct in all
material respects, in each case as of the date of this Agreement and at and as
of the Effective Time as if made at and as of such time (except to the extent
such representations and warranties specifically relate to an earlier date, in
which case as of such earlier date), except as contemplated by the Company
Disclosure Letter or this Agreement; and Purchaser and Sub shall have received
a Certificate of the Chairman of the Board, the President, or the Chief
Financial Officer of the Company as to the satisfaction of this condition;

                 (b)      Purchaser shall have receive an opinion from
Debevoise & Plimpton, special counsel to Purchaser, dated the Effective Time,
to the effect that, on the basis of certain facts, representations and
assumptions set forth in such opinion which are consistent with the stated
facts existing at the Effective Time, the Merger will be treated for Federal
income tax purposes as a reorganization within the meaning of Section 368(a) of
the Code, and that Purchaser, Sub and the Company will each be a party to that
reorganization within the meaning of Section 368(b) of the Code.  In rendering
the opinion described in the preceding sentence, such counsel may require and
rely upon representations contained in certificates of officers of Purchaser,
Sub and the Company and their respective subsidiaries;

                 (c)      the third party consents and related amendments
listed on Section 8.3(c) of the Company Disclosure Letter shall have been
obtained and all other third party consents shall have been obtained other than
consents the failure of which to be obtained would not reasonably be expected
to have a Company Material Adverse Effect; and

                 (d)      Purchaser shall have received an Affiliate Agreement
from each Person identified as an Affiliate of the Company pursuant to Section
7.10.





                                       44
<PAGE>   54

                                   ARTICLE IX
                       TERMINATION, AMENDMENT AND WAIVER

                 Section 9.1      Termination by Mutual Consent.  This
Agreement may be terminated at any time prior to the Effective Time by mutual
written agreement of Purchaser and the Company.

                 Section 9.2      Termination by Either Purchaser or the
Company.  This Agreement may be terminated and the Merger may be abandoned by
action of the Board of Directors of either Purchaser or the Company if (a) this
Agreement and the Merger shall fail to receive the requisite vote for approval
and adoption by the shareholders of the Company at the Company Special Meeting,
(b) the Merger shall not have been consummated on or before September 30, 1998;
provided however that this Agreement may be extended by written notice of
either Purchaser or the Company to a date no later than December 31, 1998 if
the Merger shall not have been consummated as a direct result of the conditions
in Section 8.1(a) or 8.1(c) not having been satisfied by such date; and
provided further, however, that this Agreement may be extended by the mutual
written agreement of Purchaser and the Company, or (c) a United States federal
or state court of competent jurisdiction or United States federal or state
governmental, regulatory or administrative agency or commission shall have
issued an order, decree or ruling or taken any other action permanently
restraining, enjoining or otherwise prohibiting the transactions contemplated
by this Agreement and such order, decree, ruling or other action shall have
become final and non-appealable; provided, that the party seeking to terminate
this Agreement pursuant to clause (b) shall not be in material violation of any
of its representations, warranties or covenants set forth in this Agreement,
and the party seeking to terminate this Agreement pursuant to clause (c) shall
have used all reasonable efforts to remove such injunction, order or decree.

                 Section 9.3      Termination by the Company.  (a) This
Agreement may be terminated and the Merger may be abandoned at any time prior
to the Effective Time, before or after the approval of the Merger and the
adoption of this Agreement by the shareholders of the Company referred to in
Section 2.1, by action of the Board of Directors of the Company, if  the Board
of Directors of the Company has (i) withdrawn, or modified or changed in a
manner adverse to Purchaser or Sub its approval or recommendation of this
Agreement or the Merger in order to approve and permit the Company to execute a
definitive agreement relating to a Takeover Proposal, (ii) determined,  after
consultation with outside legal counsel to the Company, that the failure to
take such action as set forth in the preceding clause (i) would result in a
breach of the Board of Directors' fiduciary duties under applicable law,
notwithstanding all terms and conditions which may be offered by Purchaser in
negotiations entered into pursuant to the following proviso to this sentence,
provided, however, that  prior to any such termination, the Company shall, and
shall cause its respective financial and legal advisors to, negotiate in good
faith with Purchaser to





                                       45
<PAGE>   55
make such adjustments in the terms and conditions of this Agreement as would
enable the Company to proceed with the transactions contemplated herein on such
adjusted terms and (iii) paid, immediately prior to such termination, the
Termination Payment in accordance with Section 9.5(b).

                 (b)      This Agreement may be terminated and the Merger may
be abandoned at any time prior to the Effective Time by action of the Board of
Directors of the Company, if (i) there has been a breach by Purchaser of any
representation or warranty contained in this Agreement which would have or
would be likely to have a Purchaser Material Adverse Effect or (ii) there has
been a material breach of any of the covenants or agreements set forth in this
Agreement on the part of Purchaser, which breach is not curable or, if curable,
is not cured within thirty (30) days after written notice of such breach given
by the Company to Purchaser.


                 (c)  This Agreement may be terminated and the Merger may be
abandoned at any time prior to the Effective Time by action of the Board of
Directors of the Company, if (i) the Purchaser Top Up Event shall have occurred
and (ii) Purchaser shall have failed to provide written notice to the Company
no later than 5:00 p.m. (New York time) on the second Trading Day following the
Measurement Period of Purchaser's intent to exercise the Purchaser Top Up Right
on or prior to the Effective Time.

                 "Purchaser Top Up Event" shall mean that the average (the
"Trading Average") of the high and low sales prices, regular way, per share,
rounded to four decimal places, of Purchaser Common Stock as reported in The
Wall Street Journal, during 20 Trading Days selected by the Exchange Agent
randomly by lot from the 30 consecutive Trading Days ending on (and including)
the Trading Day which is 5 Trading Days prior to the Effective Time (such
period, the "Measurement Period") is less than $27.50 (or such other amount as
is required to adjust for an Adjustment Event).  The Exchange Agent shall
provide written notice of the calculation of the Trading Average to the Company
and Purchaser promptly on the first Trading Day following the Measurement
Period.

                 "Purchaser Top Up Right" shall mean the right (but not the
obligation) of Purchaser, subject to Section 3.1(g), following the occurrence
of the Purchaser Top Up Event, to (i) increase the Cash Consideration and/or
(ii) increase the Exchange Ratio such that the sum of (A) the Cash
Consideration (as adjusted) and (B) the product of the Exchange Ratio (as
adjusted) multiplied by the Trading Average is equal to or greater than $17.26.

                 It is hereby agreed that the prices of Purchaser Common Stock
expressed in this Section 9.3 and in Section 9.4 give effect to the Stock
Dividend.





                                       46
<PAGE>   56
                 Section 9.4      Termination by Purchaser.  This Agreement may
be terminated and the Merger may be abandoned at any time prior to the
Effective Time by action of the Board of Directors of Purchaser, if (a) there
has been a breach by the Company of any representation or warranty contained in
this Agreement which would have or would be likely to have a Company Material
Adverse Effect; (b) there has been a material breach of any of the covenants or
agreements set forth in this Agreement on the part of the Company, which breach
is not curable or, if curable, is not cured within thirty (30) days after
written notice of such breach given by Purchaser to the Company; (c) the Board
of Directors of the Company shall have withdrawn, or modified or changed in a
manner adverse to Purchaser or Sub its approval or recommendation of this
Agreement or the Merger or shall have recommended a  Takeover Proposal, or
shall have executed an agreement in principle (or similar agreement) or
definitive agreement providing for a Takeover Proposal or other business
combination with a person or entity other than Purchaser or its affiliates (or
the Board of Directors of the Company resolves to do any of the foregoing) or
(d) if the Trading Average is greater than $39.50 or less than $27.50 (or such 
other amount as is required to adjust for an Adjustment Event).

                 Section 9.5      Effect of Termination and Abandonment.  (a)
In the event of termination of the Agreement and the abandonment of the Merger
pursuant to this Article IX, written notice thereof shall as promptly as
practicable be given to the other parties to this Agreement and this Agreement
shall terminate and the transactions contemplated hereby shall be abandoned,
without further action by any of the parties hereto.  If this Agreement is
terminated as provided herein: (i) except as provided in Section 9.5(b), there
shall be no liability or obligation on the part of Purchaser, the Purchaser
Subsidiaries, the Company or the Company Subsidiaries or their respective
officers and directors, and all obligations of the parties shall terminate,
except for the obligations of the parties pursuant to this Section 9.5, except
for the provisions of Sections 4.11, 5.19, 7.4, 10.4, 10.5, 10.6 and 10.10,
except for the obligations of the parties set forth in the Confidentiality
Agreement referred to in Section 7.1 and except that a party who is in material
breach of its representations, warranties, covenants or agreements set forth in
this Agreement shall be liable for damages occasioned by such breach, including
without limitation any expenses incurred by the other party in connection with
this Agreement and the transactions contemplated hereby, and (ii) all filings,
applications and other submissions made pursuant to the transactions
contemplated by this Agreement shall, to the extent practicable, be withdrawn
from the agency or person to which made.

                 (b)      If (i) either the Company or Purchaser terminates
this Agreement  pursuant to Section 9.2(a) and a Takeover Proposal had been
made as of the Company Special Meeting and within one year after such a
termination, the person that made the Takeover Proposal (or an affiliate
thereof) completes a merger, consolidation or other business combination with
the Company or a Company Significant Subsidiary, or the purchase from the
Company or from a Company Significant Subsidiary of 20% or





                                       47
<PAGE>   57
more (in voting power) of the voting securities of the Company or of 20% or
more (in market value or book value) of the assets of the Company and the
Company Subsidiaries, on a consolidated basis (any such transaction, an
"Alternate Transaction") or (ii) Purchaser terminates this Agreement (A)
pursuant to Section 9.4(b) at any time after a Takeover Proposal has been made
and within one year after such termination, the person that made the Takeover
Proposal (or an affiliate thereof) completes an Alternative Transaction or (B)
pursuant to Section 9.4(c) or (iii) the Company terminates this Agreement
pursuant to Section 9.3(a), then the Company shall pay the Purchaser in cash
the sum (x) Purchaser's Expenses (as defined below) in an amount up to but not
to exceed $2,000,000 and (y) $4,600,000 (the "Termination Payment").  The
Company acknowledges that the agreements contained in this Section 9.5(b) are
an integral part of the transactions contemplated by this Agreement, and that,
without these agreements, Purchaser and Sub would not enter into this
Agreement; accordingly, if the Company fails to promptly pay the amount due
pursuant to this Section 9.5(b), and, in order to obtain such payment,
Purchaser or Sub commences a suit which results in a judgment against the
Company for the fee set forth in this paragraph (b), the Company shall pay to
Purchaser or Sub its costs and expenses (including attorneys' fees) in
connection with such suit, together with interest from the date of termination
of the Agreement on the amounts owed at the prime rate of The Chase Manhattan
Bank, in effect from time to time during such period plus two percent.
"Expenses" shall mean the out-of-pocket fees and expenses incurred or paid by
or on behalf of Purchaser in connection with the Merger or the consummation of
any of the transactions contemplated by this Agreement, including all fees and
expenses of counsel, commercial banks, investment banking firms, accountants,
experts and consultants to Purchaser.

                 (c)      Such Termination Payment and Expenses shall be made
by wire transfer of immediately available funds to an account designated by
Purchaser (i) prior to termination of this Agreement if such payment is made
pursuant to Section 9.5(b)(iii), or (ii) prior to the consummation an Alternate
Transaction if such payment is made pursuant to Section  9.5(b)(i) or
9.5(b)(ii).


                                   ARTICLE X
                               GENERAL PROVISIONS

                 Section 10.1     Survival of Representations, Warranties and
Agreements.  No representations , warranties, covenants or agreements in this
Agreement or in any instrument delivered pursuant to this Agreement, shall
survive beyond the Effective Time other than those covenants and agreements
which by their express terms apply in whole or in part after the Effective
Time.





                                       48
<PAGE>   58
                 Section 10.2     Notices.  All notices, claims, demands and
other communications hereunder shall be in writing and shall be deemed given
upon (a) confirmation of receipt of a facsimile transmission, (b) confirmed
delivery by a standard overnight carrier or when delivered by hand or (c) the
expiration of five business days after the day when mailed by registered or
certified mail (postage prepaid, return receipt requested), addressed to the
respective parties at the following addresses (or such other address for a
party as shall be specified by like notice):

                 (a)      If to Purchaser or Sub, to:

                          Protective Life Corporation
                          2801 Highway 280 South
                          Birmingham, Alabama 35223
                          Telecopy: (205) 868-3597
                          Attention: Deborah J. Long, Esq.

                          With copy to:

                          Debevoise & Plimpton
                          875 Third Avenue
                          New York, New York  10022
                          Telecopy: (212) 909-6836
                          Attention: Paul S. Bird, Esq.

                 (b)      If to the Company, to:

                          United Dental Care, Inc.
                          13601 Preston Road
                          Suite 500 East
                          Dallas, Texas 75240
                          Telecopy: (972) 702-0340
                          Attention: William H. Wilcox

                          With copy to:

                          Strasburger & Price, L.L.P.
                          901 Main Street
                          Suite 4300
                          Dallas, Texas 25202
                          Telecopy: (214) 651-4330
                          Attention: David K. Meyercord, Esq.





                                       49
<PAGE>   59
                 Section 10.3     Descriptive Headings.  The headings contained
in this Agreement are for reference purposes only and shall not affect in any
way the meaning or interpretation of this Agreement.

                 Section 10.4     Entire Agreement; Assignment.  This Agreement
(including the Exhibits, Company Disclosure Letter, Purchaser Disclosure Letter
and other documents and instruments referred to herein) constitutes the entire
agreement and supersedes all other prior agreements and understandings (other
than those contained in the Confidentiality Agreement, which are hereby
incorporated by reference herein), both written and oral, among the parties or
any of them, with respect to the subject matter hereof, including, without
limitation, any transaction between or among the parties hereto.  This
Agreement shall not be assigned by operation of law or otherwise, except that
Sub may assign all of its rights and obligations hereunder to any direct
wholly-owned subsidiary of Purchaser which shall then be substituted for Sub
for all purposes hereof.

                 Section 10.5     Governing Law.  This Agreement shall be
governed by and construed in accordance with the laws of the State of Delaware
without giving effect to the provisions thereof relating to conflicts of law.

                 Section 10.6     Expenses.  Except as provided in Section 9.5,
whether or not the Merger is consummated, all costs and expenses incurred in
connection with this Agreement and the transactions contemplated hereby and
thereby shall be paid by the party incurring such expenses, except that those
expenses incurred in connection with printing and mailing the Proxy
Statement/Prospectus, as well as the filing fees relating to the Registration
Statement and the HSR Act, will be shared equally by Purchaser and the Company.

                 Section 10.7     Amendment.  This Agreement may not be amended
except by an instrument in writing signed on behalf of each of the parties
hereto.

                 Section 10.8     Waiver.  At any time prior to the Effective
Time, the parties hereto may (a) extend the time for the performance of any of
the obligations or other acts of the other parties hereto, (b) waive any
inaccuracies in the representations and warranties contained herein or in any
document delivered pursuant hereto and (c) waive compliance with any of the
Agreements or conditions contained herein.  Any agreement on the part of a
party hereto to any such extension or waiver shall be valid only if set forth
in an instrument in writing signed on behalf of such party.

                 Section 10.9     Counterparts; Effectiveness.  This Agreement
may be executed in two or more counterparts, each of which shall be deemed to
be an original but all of which shall constitute one and the same agreement.
This Agreement shall





                                       50
<PAGE>   60
become effective when each party hereto shall have received counterparts
thereof signed by all of the other parties hereto.

                 Section 10.10    Severability; Validity; Parties in Interest.
If any provision of this Agreement, or the application thereof to any person or
circumstance is held invalid or unenforceable, the remainder of this Agreement,
and the application of such provision to other persons or circumstances, shall
not be affected thereby, and to such end, the provisions of this Agreement are
agreed to be severable.  Nothing in this Agreement, express or implied, is
intended to confer upon any person not a party to this Agreement any rights or
remedies of any nature whatsoever under or by reason of this Agreement except
that the provisions of Section 7.6 shall inure to the benefit of and be
enforceable by the Indemnified Parties (as defined in such Section).

                 Section 10.11    Enforcement of Agreement.  The parties hereto
agree that irreparable damage would occur in the event that any provision of
this Agreement was not performed in accordance with its specific terms or was
otherwise breached.  It is accordingly agreed that the parties shall be
entitled to an injunction or injunctions to prevent breaches of this Agreement
and to enforce specifically the terms and provisions hereof in any court of
competent jurisdiction, this being in addition to any other remedy to which
they are entitled at law or in equity.

                 Section 10.12    Knowledge.  As used in this Agreement, "to
the knowledge of the Company" means the knowledge of William H. Wilcox, Peter
R. Barnett, John McCarty, Tim Brown, Jeff P. Hollansworth, Robert Kukla, Jeff
Gullo and Phil Parker.





                                       51
<PAGE>   61
                 IN WITNESS WHEREOF, each of Purchaser, Sub and the Company has
caused this Agreement to be executed as of the date first above written.

                                     PROTECTIVE LIFE CORPORATION


                                     By:         /s/ John D. Johns
                                        -----------------------------------
                                          Name:  John D. Johns
                                          Title: President and Chief
                                                 Operating Officer


                                     PLC MERGER SUBSIDIARY
                                        CORPORATION


                                     By:         /s/ Jerry W. DeFoor      
                                        -----------------------------------
                                          Name:  Jerry W. DeFoor
                                          Title: Vice President


                                     UNITED DENTAL CARE, INC.


                                     By:         /s/ William H. Wilcox     
                                        -----------------------------------
                                          Name:  William H. Wilcox
                                          Title: President and Chief
                                                 Executive Officer






                                       52
<PAGE>   62





EXHIBIT A

                      FORM OF COMPANY AFFILIATE AGREEMENT



                                                                __________, 1998


Protective Life Corporation
2801 Highway 280 South
Birmingham, Alabama 35223

Ladies and Gentlemen:

          I have been advised that as of the date of this letter I may be
deemed to be an "affiliate" of United Dental Care, Inc., a Delaware corporation
(the "Company"), as the term "affiliate" is defined for purposes of paragraphs
(c) and (d) of Rule 145 of the rules and regulations (the "Rules and
Regulations") of the Securities and Exchange Commission (the "Commission")
under the Securities Act of 1933, as amended (the "Act").  Pursuant to the
terms of the Agreement and Plan of Merger, dated as of March 10, 1998 (the
"Agreement"), by and among the Company, Protective Life Corporation, a Delaware
corporation ("Purchaser"), and PLC Merger Subsidiary Corporation, a Delaware
corporation and a wholly-owned subsidiary of Purchaser ("Sub"), the Company
will be merged with and into Sub (the "Merger").

          As a result of the Merger, I will receive a combination of cash and
shares of common stock, par value $.50 per share, of Purchaser (together with
the attached Series A Junior Participating Preferred Stock Purchase Rights,
issued in accordance with the Rights Agreement, dated as of August 7, 1995,
between Purchaser and AmSouth Bank (as successor by merger to AmSouth Bank of
Alabama, successor by conversion of charter to AmSouth Bank N.A.), as Rights
Agent, as such agreement may be amended from time to time, the "Purchaser
Common Stock"), in exchange for shares owned by me of common stock, par value
$.10 per share of the Company (the "Company Common Stock").

          I represent, warrant, and covenant to Purchaser that in the event I
receive any Purchaser Common Stock as a result of the Merger:


                                     A-1
<PAGE>   63
          1.   I have carefully read this letter and the Agreement and
     discussed the requirements of such documents and other applicable
     limitations upon my ability to sell, transfer, or otherwise dispose of the
     Purchaser Common Stock to the extent I considered necessary, with my
     counsel or counsel for the Company.

          2.   I have been advised that the issuance of the Purchaser Common
     Stock to me pursuant to the Merger has been registered with the Commission
     under the Act on a Registration Statement on Form S-4.  However, I have
     also been advised that, since at the time the Merger was submitted for a
     vote of the stockholders of the Company, I may be deemed to have been an
     affiliate of the Company and the distribution by me of the Purchaser
     Common Stock has not been registered under the Act, I may not sell,
     transfer or otherwise dispose of the Purchaser Common Stock issued to me
     in the Merger unless (i) such sale, transfer, or other disposition has
     been registered under the Act, (ii) such sale, transfer, or other
     disposition is made in conformity with Rule 145 promulgated by the
     Commission under the Act, or (iii) in the opinion of counsel reasonably
     acceptable to Purchaser or a "no action" letter obtained by the
     undersigned from the staff of the Commission, such sale, transfer, or
     other disposition is otherwise exempt from registration under the Act.

          3.   I understand that Purchaser is under no obligation to register
     the sale, transfer, or other disposition of the Purchaser Common Stock by
     me or on my behalf under the Act.

          4.   I also understand that stop transfer instructions will be given
     to Purchaser's transfer agent with respect to the Purchaser Common Stock
     and that there will be placed on the certificates for the Purchaser Common
     Stock issued to me, or any substitutions therefor, a legend stating in
     substance:

     "THE SHARES REPRESENTED BY THIS CERTIFICATE WERE ISSUED IN A TRANSACTION
     TO WHICH RULE 145 PROMULGATED UNDER THE SECURITIES ACT OF 1933 APPLIES.
     THE SHARES REPRESENTED BY THIS CERTIFICATE MAY ONLY BE TRANSFERRED IN
     ACCORDANCE WITH THE TERMS OF AN AGREEMENT DATED [           ] BETWEEN THE
     REGISTERED HOLDER HEREOF AND PURCHASER A COPY OF WHICH AGREEMENT IS ON
     FILE AT THE PRINCIPAL OFFICES OF PURCHASER."

          5.   I also understand that unless the transfer by me of my Purchaser
     Common Stock has been registered under the Act or is a sale made in
     conformity with the


                                     A-2
<PAGE>   64
     provisions of Rule 145, Purchaser reserves the right to put the following
     legend on the certificates issued to my transferee:

     "THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER
     THE SECURITIES ACT OF 1933 AND WERE ACQUIRED FROM A PERSON WHO RECEIVED
     SUCH SHARES IN A TRANSACTION TO WHICH RULE 145 PROMULGATED UNDER THE
     SECURITIES ACT OF 1933 APPLIES.  THE SHARES HAVE BEEN ACQUIRED BY THE
     HOLDER NOT WITH A VIEW TO, OR FOR RESALE IN CONNECTION WITH, ANY
     DISTRIBUTION THEREOF WITHIN THE MEANING OF THE SECURITIES ACT OF 1933 AND
     MAY NOT BE SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT IN ACCORDANCE
     WITH AN EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT
     OF 1933."

          It is understood and agreed that the legends set forth in paragraphs
4 and 5 above shall be removed by delivery of substitute certificates without
such legend if such legend is not required for purposes of the Act or the
Agreement, including sales under Rule 145(d).  It is also understood and agreed
that such legends and the stop orders referred to above will be removed if (i)
one year shall have elapsed from the date the undersigned acquired the
Purchaser Common Stock received in the Merger and the provisions of Rule
145(d)(2) are then available to the undersigned, (ii) two years shall have
elapsed from the date the undersigned acquired the Purchaser Common Stock
received in the Merger and the provisions of Rule 145(d)(3) are then available
to the undersigned, or (iii) Purchaser has received either an opinion of
counsel, which opinion and counsel shall be reasonably satisfactory to
Purchaser, or a "no action" letter obtained by the undersigned from the staff
of the Commission, to the effect that the restrictions imposed by Rule 145
under the Act no longer apply to the undersigned.

          This Letter Agreement will terminate and will be of no further force
or effect upon any termination of the Agreement before the Effective Time.


                                     A-3
<PAGE>   65
          Execution of this letter should not be considered an admission on my
part that I am an "affiliate" of the Company as described in the first
paragraph of this letter or as a waiver of any rights I may have to object to
any claim that I am such an affiliate on or after the date of this letter.

                                                   Very truly yours,



Accepted this     day of
         , 1998
- ---------      

PROTECTIVE LIFE CORPORATION


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




                                     A-4

<PAGE>   1
                                                                 EXHIBIT 2.2

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


                             STOCKHOLDER AGREEMENT


                                    between


                          PROTECTIVE LIFE CORPORATION

                                      and

                                JACK R. ANDERSON




                           Dated as of March 10, 1998


================================================================================
<PAGE>   2

                 STOCKHOLDER AGREEMENT dated as of March 10, 1998, between
PROTECTIVE LIFE CORPORATION, a Delaware corporation ("Purchaser"), and JACK R.
ANDERSON, the "Stockholder").

                 WHEREAS Purchaser, a Delaware corporation and a wholly owned
subsidiary of Purchaser ("Sub"), and United Dental Care, Inc., a Delaware
corporation (the "Company"), propose to enter into an Agreement and Plan of
Merger dated as of the date hereof (as the same may be amended or supplemented,
the "Merger Agreement"; capitalized terms used but not defined herein shall
have the meanings set forth in the Merger Agreement) providing for the merger
of the Company with and into Sub (the "Merger"), upon the terms and subject to
the conditions set forth in the Merger Agreement; and

                 WHEREAS the Stockholder is the beneficial owner (as defined in
Rule 13d-3 under the Securities Exchange Act of 1934, as amended (the "Exchange
Act")) of such number of shares of Common Stock, par value $0.10 per share, of
the Company (the "Company Common Stock") set forth opposite his name on
Schedule A attached hereto (such shares of Company Common Stock, together with
any other shares of capital stock of the Company acquired by such Stockholder
after the date hereof and during the term of this Agreement and the shares
listed on Schedule A hereto as to which beneficial ownership is disclaimed and
voting and investment control is exercised by others ("Others"), being
collectively referred to herein as the "Subject Shares"); and

                 WHEREAS, as a condition to its willingness to enter into the
Merger Agreement, Purchaser has requested that the Stockholder enter into this
Agreement;

                 NOW, THEREFORE, to induce Purchaser to enter into, and in
consideration of its entering into, the Merger Agreement, and in consideration
of the premises and the representations, warranties and agreements contained
herein, the parties agree as follows:

                 1.       Representations and Warranties of the Stockholder.
The Stockholder hereby represents and warrants to Purchaser as of the date
hereof as follows:

                 (a)      Authority.  The Stockholder has all requisite power
and authority to enter into this Agreement and to consummate the transactions
contemplated hereby.  This Agreement has been duly authorized, executed and
delivered by the Stockholder and constitutes a valid and binding obligation of
the Stockholder enforceable in accordance with its terms. The execution and
delivery of this Agreement do not, and the consummation of the transactions
contemplated hereby and compliance with the terms
<PAGE>   3
hereof will not, conflict with, or result in any violation of, or default (with
or without notice or lapse of time or both) under any provision of, any trust
agreement, loan or credit agreement, note, bond, mortgage, indenture, lease or
other agreement, instrument, permit, concession, franchise, license, judgment,
order, notice, decree, statute, law, ordinance, rule or regulation applicable
to the Stockholder or to the Stockholder's property or assets.  If the
Stockholder is married and the Stockholder's Subject Shares constitute
community property or otherwise need spousal or other approval for this
Agreement to be legal, valid and binding, this Agreement has been duly
authorized, executed and delivered by, and constitutes a valid and binding
agreement of, the Stockholder's spouse, enforceable against such spouse in
accordance with its terms.  The Stockholder agrees to deliver to Purchaser upon
request a proxy substantially in the form attached hereto as Exhibit A, which
proxy shall be coupled with an interest and irrevocable to the extent permitted
under Delaware law, with the total number of such Stockholder's Subject Shares
correctly indicated thereon.

                 (b)      The Subject Shares.  The Stockholder is the record
and beneficial owner of, and has good and marketable title to, the Subject
Shares set forth opposite his name on Schedule A attached hereto, free and
clear of any claims, liens, encumbrances and security interests whatsoever.
The Stockholder does not own, of record or beneficially, any shares of capital
stock of the Company other than the Subject Shares set forth opposite his or
its name on Schedule A attached hereto.  The Stockholder has the sole right to
vote such Subject Shares, and none of such Subject Shares is subject to any
voting trust or other agreement, arrangement or restriction with respect to the
voting of such Subject Shares, except as contemplated by this Agreement (other
than the Stockholders Agreement dated September 16, 1994 among Stockholder,
Robert J. Nettinga and certain other stockholders of the Company).  The
Stockholder does not own any options or warrants to acquire any shares of
Company Common Stock or any other securities convertible into or exchangeable
for Company Common Stock other than options to acquire 12,000 shares of Company
Common Stock.

                 2.       Representations and Warranties of Purchaser.
Purchaser hereby represents and warrants to the Stockholder that Purchaser has
all requisite corporate power and authority to enter into this Agreement and to
consummate the transactions contemplated hereby.  The execution and delivery of
this Agreement by Purchaser, and the consummation of the transactions
contemplated hereby, have been duly authorized by all necessary corporate
action on the part of Purchaser.  This Agreement has been duly executed and
delivered by Purchaser and constitutes a valid and binding obligation of
Purchaser enforceable in accordance with its terms. The execution and delivery
of this Agreement do not, and the consummation of the transactions contemplated
hereby and compliance with the terms hereof will not, conflict with, or result
in any violation of, or default (with or without notice or lapse of time or
both) under any provision of, the





                                       2
<PAGE>   4
certificate of incorporation or by-laws of Purchaser, any trust agreement, loan
or credit agreement, note, bond, mortgage, indenture, lease or other agreement,
instrument, permit, concession, franchise, license, judgment, order, notice,
decree, statute, law, ordinance, rule or regulation applicable to Purchaser or
to Purchaser's property or assets.

                 3.       Covenants of the Stockholder.  Until the termination
of this Agreement in accordance with Section 7, the Stockholder agrees as
follows:

                 (a)      At any meeting of stockholders of the Company called
to vote upon the Merger and the Merger Agreement or at any adjournment thereof
or in any other circumstances upon which a vote, consent or other approval
(including by written consent) with respect to the Merger and the Merger
Agreement is sought, the Stockholder shall vote (or cause to be voted) (and
shall use his best efforts to cause Others to vote) the Subject Shares in favor
of the Merger, the adoption of the Merger Agreement and the approval of the
terms thereof and each of the other transactions contemplated by the Merger
Agreement.

                 (b)      At any meeting of stockholders of the Company or at
any adjournment thereof or in any other circumstances upon which the
Stockholder's vote, consent or other approval is sought, the Stockholder shall
vote (or cause to be voted) (and shall use his best efforts to cause Others to
vote) the Subject Shares against (i) any merger agreement or merger (other than
the Merger Agreement and the Merger), consolidation, combination, sale of
substantial assets, reorganization, recapitalization, dissolution, liquidation
or winding up of or by the Company or any other takeover proposal, as such term
is defined in Section 7.2(e) of the Merger Agreement (a "Takeover Proposal") or
(ii) any amendment of the Company's certificate of incorporation or by-laws or
other proposal (including with respect to the election of directors) or
transaction involving the Company or any of its subsidiaries, which amendment
or other proposal or transaction would in any manner impede, frustrate, prevent
or nullify the Merger, the Merger Agreement or any of the other transactions
contemplated by the Merger Agreement.  Subject to Section 9, the Stockholder
further agrees not to commit or agree to take any action inconsistent with the
foregoing.

                 (c)      Except as provided in the immediately succeeding
sentence of this Section 3(c), the Stockholder agrees not to (and to use his
best efforts to cause Others not to) (i) sell, transfer, pledge, assign or
otherwise dispose of (including by gift) (collectively, "Transfer"), or enter
into any contract, option or other arrangement (including any profit sharing
arrangement) with respect to the Transfer of, the Subject Shares to any person
other than pursuant to the terms of the Merger, (ii) enter into any voting
arrangement, whether by proxy, voting agreement or otherwise, in connection
with, directly or indirectly, any Takeover Proposal.  Notwithstanding the
foregoing, the





                                       3
<PAGE>   5
Stockholder shall have the right, for estate planning purposes, to Transfer
Subject Shares to a transferee following the due execution and delivery to
Purchaser by each transferee of a counterpart to this Agreement.

                 (d)      Subject to the terms of Section 9, during the term of
this Agreement, the Stockholder shall not, nor shall it permit any investment
banker, attorney or other adviser or representative of the Stockholder to, (i)
directly or indirectly solicit, initiate or encourage the submission of, any
Takeover Proposal or (ii) directly or indirectly participate in any discussions
or negotiations regarding, or furnish to any person any information with
respect to, or take any other action to facilitate any inquiries or the making
of any proposal that constitutes, or may reasonably be expected to lead to, any
Takeover Proposal.

                 (e)      Until after the Merger is consummated or the Merger
Agreement is terminated, the Stockholder shall use all reasonable efforts (and
shall use his best efforts to cause Others) to take, or cause to be taken, all
actions, and to do, or cause to be done, and to assist and cooperate with the
Company and Purchaser in doing, all things necessary, proper or advisable to
consummate and make effective, in the most expeditious manner practicable, the
Merger and the other transactions contemplated by the Merger Agreement.

                 4.       Further Assurances.  Stockholder will (and will use
his best efforts to cause Others to), from time to time, execute and deliver,
or cause to be executed and delivered, such additional or further consents,
documents and other instruments as Purchaser may reasonably request for the
purpose of effectively carrying out the transactions contemplated by this
Agreement.

                 5.       Assignment.  Neither this Agreement nor any of the
rights, interests or obligations hereunder shall be assigned by any of the
parties without the prior written consent of the other parties, except that
Purchaser may assign, in its sole discretion, any or all of its rights,
interests and obligations hereunder to any direct or indirect wholly owned
subsidiary of Purchaser.  Subject to the preceding sentence, this Agreement
will be binding upon, inure to the benefit of and be enforceable by the parties
and their respective successors and assigns.

                 6.       Termination.  This Agreement shall terminate upon the
earlier of (a) the termination of the Merger Agreement in accordance with the
terms thereof and (b) the Effective Time of the Merger.





                                       4
<PAGE>   6
                 7.       General Provisions.

                 (a)      Amendments.  This Agreement may not be amended
altered or supplemented except by an instrument in writing signed by each of
the parties hereto.

                 (b)      Notice.  All notices and other communications
hereunder shall be in writing and shall be deemed given if delivered personally
or sent by overnight courier (providing proof of delivery) to Purchaser in
accordance with Section 10.2 of the Merger Agreement and to the Stockholder at
his address set forth on Schedule A attached hereto (or at such other address
for a party as shall be specified by like notice).

                 (c)      Interpretation.  When a reference is made in this
Agreement to Sections, such reference shall be to a Section to this Agreement
unless otherwise indicated.  The headings contained in this Agreement are for
reference purposes only and shall not affect in any way the meaning or
interpretation of this Agreement.  Wherever the words "include", "includes" or
"including" are used in this Agreement, they shall be deemed to be followed by
the words "without limitation".

                 (d)      Counterparts.  This Agreement may be executed in one
or more counterparts, all of which shall be considered one and the same
agreement, and shall become effective when one or more of the counterparts have
been signed by each of the parties and delivered to the other party, it being
understood that each party need not sign the same counterpart.

                 (e)      Entire Agreement; No Third-Party Beneficiaries.  This
Agreement (including the documents and instruments referred to herein) (i)
constitutes the entire agreement and supersedes all prior agreements and
understandings, both written and oral, among the parties with respect to the
subject matter hereof and (ii) is not intended to confer upon any person other
than the parties hereto any rights or remedies hereunder.

                 (f)      Governing Law.  This Agreement shall be governed by,
and construed in accordance with, the laws of the State of Delaware regardless
of the laws that might otherwise govern under applicable principles of
conflicts of law thereof.

                 8.       Stockholder Capacity.  No person executing this
Agreement who is or becomes during the term hereof a director or officer of the
Company makes any agreement or understanding herein in his capacity as such
director or officer.  Stockholder signs solely in his capacity as the record
holder and beneficial owner of such Stockholder's Subject Shares and nothing
herein shall limit or affect any actions taken by a Stockholder in his capacity
as an officer or director of the Company to the extent specifically permitted
by the Merger Agreement.





                                       5
<PAGE>   7
                 9.       Enforcement.  The parties agree that irreparable
damage would occur in the event that any of the provisions of this Agreement
were not performed in accordance with their specific terms or were otherwise
breached.  It is accordingly agreed that the parties shall be entitled to an
injunction or injunctions to prevent breaches of this Agreement and to enforce
specifically the terms and provisions of this Agreement in any court of the
United States located in the State of Delaware or in a Delaware state court,
this being in addition to any other remedy to which they are entitled at law or
in equity.  In addition, each of the parties hereto (i) consents to submit such
party to the personal jurisdiction of any Federal court located in the State of
Delaware or any Delaware state court in the event any dispute arises out of
this Agreement or any of the transactions contemplated hereby, (ii) agrees that
such party will not attempt to deny or defeat such personal jurisdiction by
motion or other request for leave from any such court, (iii) agrees that such
party will not bring any action relating to this Agreement or the transactions
contemplated hereby in any court other than a Federal court sitting in the
state of Delaware or a Delaware state court and (iv) waives any right to trial
by jury with respect to any claim or proceeding related to or arising out of
this Agreement or any of the transactions contemplated hereby.





                                       6
<PAGE>   8
                 IN WITNESS WHEREOF, Purchaser has caused this Agreement to be
signed by its officer thereunto duly authorized and the Stockholder has signed
this Agreement, all as of the date first written above.

                          PROTECTIVE LIFE CORPORATION,

                          By: /s/ John D. Johns                                 
                              --------------------------------------------------
                             Name: John D. Johns
                             Title: President and Chief Operating Officer



                          /s/ Jack R. Anderson
                          ------------------------------------------------------
                          JACK R. ANDERSON


                          Acknowledged and agreed as of the date first above
                          written:



                          /s/ Rose Marie Anderson
                          ------------------------------------------------------
                          ROSE MARIE ANDERSON





                                       7
<PAGE>   9
                                   SCHEDULE A



<TABLE>
<CAPTION>
                                                                Shares of Common
                 Name                                                Stock  
                 ----                                              ---------
 <S>                                                             <C>
 Jack R. Anderson                                                458,500 shares
 1645 Dallas Parkway
 Suite 735
 Dallas, TX 75248

 Others                                                          778,500 shares
</TABLE>





                                       8

<PAGE>   1

                                                                    EXHIBIT 99.1



FOR IMMEDIATE RELEASE:

Contact:     United Dental Care, Inc.
Mr. John W. McCarty
Senior Vice President and Chief Financial Officer
(972) 855-5892

Protective Life Corporation
Mr. Jerry W. DeFoor
Vice President and Controller
(205) 868-3515


                       UNITED DENTAL CARE TO BE ACQUIRED
                         BY PROTECTIVE LIFE CORPORATION


DALLAS, TEXAS AND BIRMINGHAM, ALABAMA (March 11, 1998) -- United Dental Care,
Inc. (NASDAQ/NM:UDCI) and Protective Life Corporation (NYSE:PL) today jointly
announced a definitive agreement in which Protective Life Corporation will
acquire United Dental Care.  The purchase price per share of United Dental Care
common stock is payable in a combination of $9.31 in cash and 0.14465 shares of
Protective's common stock (before taking into account Protective's recently
announced 2-for-1 stock split payable April 1).  The definitive agreement also
establishes collars at $55 and $79 per Protective common share before
adjustment for the stock split.  The transaction, which values the outstanding
common stock of United Dental Care at approximately $175 million, is subject to
approval by United Dental Care stockholders, regulators and other customary
closing conditions.

William H. Wilcox, president and chief executive officer of United Dental Care,
said, "We believe that our joining forces with Protective is in the best
interests of our customers, our stockholders, and our employees.  The combining
of these two companies will result in a larger, stronger organization that is
better positioned to achieve its goals and succeed in a dynamic marketplace. 
This transaction substantially increases Protective's dental membership, and
the combined management strength and operational excellence of the two
organizations will further enhance the superior service available to the
customers of both companies."


                                     -MORE-
<PAGE>   2
UDCI to be Acquired by
    Protective Life
Page 2
March 11, 1998

Drayton Nabers, Jr., chairman and chief executive officer of Protective,
stated, "This is a strategic acquisition for Protective.  United Dental Care
has one of the best franchises in the dental managed care industry. It has a
good brand name, a solid customer base and an excellent network of dental
providers.  The transaction will give us additional economies in the dental
managed care industry.  We will become the nation's third largest dental
managed care company. By combining our DentiCare operations with United Dental
Care's operations, we will have a coast-to-coast network providing even better
service and geographic scope to our customers.  We are delighted to have this
opportunity to expand in this growth market."

Protective, with annual revenues of approximately $1.1 billion and assets of
$10.5 billion, provides financial services through the production, distribution
and administration of insurance and investment products throughout the United
States and Hong Kong.  Protective has over 500,000 members in its dental
managed care network and provides dental indemnity insurance to an additional
600,000 customers.  Protective's dental managed care products are licensed in
13 states with its primary marketing territories being Florida, Georgia,
Tennessee and Oklahoma.

United Dental Care provides dental coverage to approximately 1.8 million
members and is a leading provider of managed dental benefit plans, providing a
broad range of dental benefit programs to employers and third parties across
the U.S. from offices in 32 major markets.  The Company has over 100,000
members in each of Arizona, Texas, New Jersey, New Mexico, Missouri and
Colorado.

This release includes "forward-looking statements" within the meaning of the
Securities Act of 1933 and the Securities Exchange Act of 1934.  All statements
based on future expectations rather than on historical facts are
forward-looking statements that involve a number of risks and uncertainties.
Neither company can give assurance that such statements will prove to be
correct.  With respect to United Dental Care, important factors that could
affect actual results include, but are not limited to, the actual loss ratio on
the Company's dental indemnity business, the future cost of dental services
performed under the Company's point-of-service dental plans, the effectiveness
of certain administrative changes to the Company's operations and the actual
sales of the Company's products.  With respect to Protective, please refer to
Exhibit 99 of Protective's most recent Form 10-Q or the Management's Discussion
and Analysis section of Protective's most recent Annual Report to Stockholders
for more information about factors which could affect future results.

                                     -###-


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