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                                                                   EXHIBIT 10.01

                  FIRST AMENDMENT TO REVOLVING CREDIT AGREEMENT

     THIS FIRST AMENDMENT TO REVOLVING CREDIT AGREEMENT (this "AMENDMENT") is
entered into as of June 29, 1997 between UNITED DENTAL CARE, INC., a Delaware
corporation ("BORROWER"), each lender which is a signatory to this Amendment
(collectively, the "LENDERS"), and NATIONSBANK OF TEXAS, N.A., a national
banking association, as agent for Lenders ("AGENT").

     Borrower, Agent, and Lenders are parties to the Revolving Credit Agreement
(as modified, amended, renewed, and extended from time-to-time, the "CREDIT
AGREEMENT") dated as of November 14, 1996, providing for a $35,000,000.00
revolving credit facility (a) to support Borrower's and its Subsidiaries'
capital expenditures and working capital needs (not to exceed $5,000,000.00 in
the aggregate at any one time outstanding), (b) to finance Permitted
Acquisitions, and (c) for the issuance of letters of credit. Borrower and
Lenders have agreed, upon the following terms and conditions, to amend the
Credit Agreement to, among other things, modify Borrower's minimum Liquidity
Coverage Ratio and allow Borrower to repurchase outstanding shares of its
capital stock. Accordingly, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, Borrower and Lenders agree as
follows:

     1. TERMS AND REFERENCES. Unless otherwise stated in this Amendment (a)
terms defined in the Credit Agreement have the same meanings when used in this
Amendment, and (b) references to "Sections" are to the Credit Agreement's
sections.

     2. OPINION OF COUNSEL. Notwithstanding anything contained in the Credit
Agreement, Borrower shall provide Agent, on or before September 15, 1997, with
an opinion of counsel, reasonably satisfactory to Agent, setting forth an
analysis of the Acquisition by Peter Barnett of OraCare Dental Associates, P.A.,
and stating that such Acquisition complies in all respects with applicable
Governmental Requirements, including N.J. REV. STAT. SECTION 45:6-12 (1996).
Failure by Borrower to deliver such opinion of counsel to Agent shall constitute
an Event of Default.

     3. AMENDMENTS TO THE CREDIT AGREEMENT.

     (a) The first recital is hereby deleted in its entirety and replaced with
the following:

         1. Borrower has requested that Lenders provide to Borrower a revolving
     credit facility of up to $35,000,000.00 (a) to support Borrower's and its
     Subsidiaries's capital expenditures and working capital needs (but not to
     exceed $5,000,000.00 in the aggregate at any one time outstanding), (b) to
     finance Permitted Acquisitions (defined below), (c) for the issuance of
     letters of credit required in connection with such working capital needs
     (subject to the limitations described in (a) above), the OraCare
     Acquisition (defined below), or Permitted Acquisitions, and (d) to allow
     Borrower to redeem shares of its issued and outstanding stock (provided
     that Advances for such purposes may not exceed $10,000,000.00 in the
     aggregate).


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                                                                   EXHIBIT 10.01


     (b) SECTION 7.4 is hereby amended to delete the first sentence therein and
replace such sentence with the following:

         Borrower shall not directly or indirectly declare or make, or incur any
     liability to make, any Distribution, except for redemptions of Borrower's
     common stock, so long as the aggregate amount of any such redemptions does
     not exceed $10,000,000.00.

     (c) Lenders hereby waive Borrower's non-compliance with SECTION 7.18 as of
June 30, 1997. SECTION 7.18 is hereby deleted in its entirety and replaced with
the following:

         7.18 LIQUIDITY COVERAGE RATIO. Borrower shall not permit the ratio of
     (a) Liquid Assets to (b) the sum of (i) accounts payable, (ii) accrued
     expenses, and (iii) Reserves to be (x) as of any date between July 1, 1997
     and December 30, 1997, less than 1.25 to 1.00, and (y) as of any date after
     December 30, 1997, less than 1.50 to 1.00.

     (d) SECTION 7.19 is hereby deleted in its entirety and replaced with the
following:

         7.19 CAPITAL EXPENDITURES. Borrower shall not permit the aggregate
     amount of all Capital Expenditures made by the Companies to exceed (a) from
     January 1, 1997 through December 31, 1997, $8,000,000, and (b) during any
     calendar year ending after December 31, 1997, $5,000,000.

     4. RATIFICATIONS. Borrower (a) ratifies and confirms all provisions of the
Loan Documents as amended by this Amendment, (b) ratifies and confirms that all
guaranties, assurances, and Liens granted, conveyed, or assigned to Agent and
Lenders under the Loan Documents are not released, reduced, or otherwise
adversely affected by this Amendment and continue to guarantee, assure, and
secure full payment and performance of the present and future Obligation, and
(c) agrees to perform such acts and duly authorize, execute, acknowledge,
deliver, file, and record such additional documents, and certificates as Agent
may request in order to create, perfect, preserve, and protect those guaranties,
assurances, and Liens.

     5. REPRESENTATIONS. Borrower represents and warrants to Agent and Lenders
that as of the date of this Amendment: (a) this Amendment and the other Loan
Documents to be delivered under this Amendment have been duly authorized,
executed, and delivered by Borrower; (b) no action of, or filing with, any
Governmental Authority is required to authorize, or is otherwise required in
connection with, the execution, delivery, and performance by Borrower of this
Amendment; (c) the Loan Documents, as amended by this Amendment, are valid and
binding upon Borrower and are enforceable against Borrower in accordance with
their respective terms, except as limited by Debtor Laws; (d) the execution,
delivery, and performance by Borrower of this Amendment do not require the
consent of any other Person and do not and will not constitute a violation of
any laws, agreements, or understandings to which Borrower is a party or by which
Borrower is bound; (e) all representations and warranties in the Loan Documents
are true and correct in all material respects except to the extent that (i) any
of them speak to a different specific date or (ii) the facts on which any of
them were based have been changed by transactions contemplated or

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                                                                   EXHIBIT 10.01

permitted by the Credit Agreement; and (f) after giving effect to this
Amendment, no Event of Default or Potential Default exists.

     6. CONDITIONS PRECEDENT. This Amendment shall not be effective unless and
until: (a) Agent receives counterparts of this Amendment executed by each party
listed below; (b) the representations and warranties in the Credit Agreement, as
amended by this Amendment, and each other Loan Document are true and correct in
all material respects on and as of the date of this Amendment as though made as
of the date of this Amendment; and (c) Agent receives an officer's certificate
executed by an authorized officer of Borrower, certifying to (i) the resolutions
adopted by its board of directors authorizing the transactions contemplated by
this Amendment, (ii) incumbency of officers of Borrower, and (iii) changes in
its articles of incorporation and bylaws, if any, since November 14, 1996.

     7. CONTINUED EFFECT. Except to the extent amended hereby, all terms,
provisions, and conditions of the Credit Agreement and the other Loan Documents,
and all documents executed in connection therewith, shall continue in full force
and effect and shall remain enforceable and binding in accordance with their
respective terms.

     8. MISCELLANEOUS. Unless stated otherwise (a) the singular number includes
the plural and vice versa and words of any gender include each other gender, in
each case, as appropriate, (b) headings and captions may not be construed in
interpreting provisions, (c) this Amendment must be construed -- and its
performance enforced -- under Texas law, (d) if any part of this Amendment is
for any reason found to be unenforceable, all other portions of it nevertheless
remain enforceable, and (e) this Amendment may be executed in any number of
counterparts with the same effect as if all signatories had signed the same
document, and all of those counterparts must be construed together to constitute
the same document.

     9. ENTIRETIES. THE CREDIT AGREEMENT AS AMENDED BY THIS AMENDMENT REPRESENTS
THE FINAL AGREEMENT BETWEEN THE PARTIES ABOUT THE SUBJECT MATTER OF THE CREDIT
AGREEMENT AS AMENDED BY THIS AMENDMENT AND MAY NOT BE CONTRADICTED BY EVIDENCE
OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE
ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

     10. PARTIES. This Amendment binds and inures to Borrower, Agent, Lenders,
and their respective successors and permitted assigns.


                     REMAINDER OF PAGE INTENTIONALLY BLANK.
                            SIGNATURE PAGE TO FOLLOW.

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                                                                   EXHIBIT 10.01

     EXECUTED as of the date first stated above.


                                                                BORROWER:

                                          UNITED DENTAL CARE, INC.,
                                          a Delaware corporation

                                          By: /s/   Mark Pape
                                             -------------------------------
                                              Mark Pape
                                              Senior Vice President


                                          AGENT:

                                          NATIONSBANK OF TEXAS, N.A.,
                                          a national banking association


                                          By: /s/   Sueanna Miranda
                                             -------------------------------
                                             Sueanna Miranda
                                             Vice President


                                          LENDERS:

                                          NATIONSBANK OF TEXAS, N.A.,
                                          a national banking association


                                          By: /s/   Sueanna Miranda
                                             -------------------------------
                                             Sueanna Miranda
                                             Vice President



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