GENTLE DENTAL SERVICE CORP
DEF 14A, 1998-04-30
MISC HEALTH & ALLIED SERVICES, NEC
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                            SCHEDULE 14A INFORMATION

                    Proxy Statement Pursuant to Section 14(a)
                     of the Securities Exchange Act of 1934
                               (Amendment No. __)


Filed by the Registrant  [ X ]

Filed by a Party other than the Registrant  [   ]

Check the appropriate box:

[   ]  Preliminary Proxy Statement

[   ]  Confidential, for Use of the Commission Only (as permitted by 
       Rule 14a-6(e)(2))

[ X ]  Definitive Proxy Statement

[   ]  Definitive Additional Materials

[   ]  Soliciting Material Pursuant to Section 240.14a-11(c) or 
       Section 240.14a-12

                        GENTLE DENTAL SERVICE CORPORATION
- --------------------------------------------------------------------------------
                (Name of Registrant as Specified in its Charter)


- --------------------------------------------------------------------------------
     (Name of Person(s) Filing Proxy Statement if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

[ X ]  No fee required

[   ]  Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11

       1)  Title of each class of securities to which transaction applies:
       
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           pursuant to Exchange Act Rule 0-11:  Set forth the amount on which
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[   ]  Fee paid previously with preliminary materials

[   ]  Check box if any part of the fee is offset as provided by Exchange 
       Act Rule 0-11(a)(2) and identify the filing for which the offsetting 
       fee was paid previously.  Identify the previous filing by registration
       statement number, or the Form or Schedule and the date of its filing.

       1)  Amount Previously Paid:
       
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<PAGE>
April 30, 1998




Dear Gentle Dental Shareholders:

   
     We are pleased to invite you to our 1998 Annual Meeting which will be held
at 222 North Sepulveda Boulevard, El Segundo, California 90245, on Thursday,
June 4, 1998, at 8:00 a.m., Pacific Daylight Savings Time.

     The Annual Meeting will begin with a report on the Company's progress,
followed by a discussion and shareholder questions. Voting on the election of
certain directors and other matters is also scheduled. The items to be voted on
are addressed in the enclosed Notice of Annual Meeting of Shareholders and Proxy
Statement.
    

     Your vote is important. Whether or not you plan to attend the meeting,
please promptly complete and return the enclosed proxy card to ensure that your
shares will be represented. A postage pre-paid envelope has been provided for
your convenience. Even if you have given your proxy, you may still vote in
person if you attend the Annual Meeting. It is not necessary to retain your
proxy in order to gain admission to or vote at the Annual Meeting.

     We look forward to seeing you at the Annual Meeting.


                                       Sincerely,

   
                                       /s/ MICHAEL T. FIORE
    

                                       Michael T. Fiore
                                       Co-Chairman of the Board, Chief Executive
                                       Officer and President
<PAGE>
                        GENTLE DENTAL SERVICE CORPORATION

                    NOTICE OF ANNUAL MEETING OF SHAREHOLDERS

                                  JUNE 4, 1998


To the Shareholders of Gentle Dental Service Corporation:

   
     The annual meeting of the shareholders (the "Annual Meeting") of Gentle
Dental Service Corporation, a Washington corporation (the "Company"), will be
held at 8:00 a.m., Pacific Daylight Savings Time, on Thursday, June 4, 1998, at
222 North Sepulveda Boulevard, El Segundo, California 90245, for the following
purposes:
    

1. To elect three directors to serve for a term of three years and until their
successors are elected and qualified and to elect three individuals appointed to
the Board of Directors in 1997 in order to allow such individuals to serve as
directors for the remainder of their respective terms and until their successors
are elected and qualified.

2. To approve a series of amendments to the Company's 1993 Stock Incentive Plan
(the "Plan") to effect the following changes: (i) increase the number of shares
of common stock (the "Common Stock") of the Company authorized for issuance
under the Plan by 1,000,000 shares from 1,000,000 to 2,000,000 shares; (ii)
clarify that the eligibility provisions of the Plan include dentists and other
professionals who are employed by corporations, partnerships, sole
proprietorships or other business organizations which have entered into
agreements with the Company under which the Company manages the non-professional
aspects of such businesses; (iii) provide that, unless otherwise determined by
the Board of Directors, options granted to employees under the Plan will
continue to vest after termination or cessation of employment so long as such
former employee is continuously retained by the Company on an independent
contractor basis and for so long as such independent contractor relationship
continues; and (iv) increase the aggregate number of shares of Common Stock
underlying stock options and stock appreciation rights that any employee may
receive under the Plan in any calendar year by 75,000 shares from 75,000 to
150,000 shares.

   
3. To ratify the selection of KPMG Peat Marwick LLP as the Company's independent
auditor for fiscal year 1998.

4. To transact any other business that may properly come before the Annual
Meeting or any adjournment or postponement thereof.
    

     The foregoing items of business are more fully described in the Proxy
Statement that accompanies this Notice.

     The close of business on Friday, April 10, 1988 has been fixed as the
record date for the determination of shareholders entitled to notice of and to
vote at the Annual Meeting and any adjournment or postponement thereof. Only
shareholders of record at such time will be entitled to notice of and to vote at
the Annual Meeting. A majority of the outstanding shares of Common Stock must be
represented at the Annual Meeting in order to constitute a quorum. Please return
your Proxy Card in order to ensure that a quorum is obtained.

                             YOUR VOTE IS IMPORTANT

                                       By Order of the Board of Directors
                                       L. THEODORE VAN EERDEN
                                       Executive Vice President and Secretary
                                       Yorba Linda, California
                                       April 30, 1998
<PAGE>
                        GENTLE DENTAL SERVICE CORPORATION


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

                                 PROXY STATEMENT

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


   
     This Proxy Statement and the enclosed Proxy Card are furnished in
connection with the 1998 annual meeting of shareholders (the "Annual Meeting")
of Gentle Dental Service Corporation, a Washington corporation (the "Company"),
which will be held at 222 North Sepulveda Boulevard, El Segundo, California
90245, on Thursday, June 4, 1998, at 8:00 a.m., Pacific Daylight Savings Time.
Shareholders of record at the close of business on April 10, 1998 are entitled
to notice of and to vote at the annual meeting and any adjournment or
postponement thereof.
    

     On April 10, 1998, there were 7,802,660 outstanding shares of the Company's
common stock (the "Common Stock"). Each share of Common Stock is entitled to one
vote on all matters properly brought before the Annual Meeting. The only
outstanding authorized voting security of the Company is Common Stock. There are
no cumulative voting rights associated with the Common Stock.

     A majority of the outstanding shares of Common Stock entitled to vote at
the Annual Meeting will constitute a quorum. The Company's inspector of
elections for the Annual Meeting will count abstentions and so-called "broker
votes" (i.e., shares held by a broker or other nominee having discretionary
power to vote on some matters but not others) for purposes of determining
whether a quorum exists for the transaction of business at the Annual Meeting.
Broker non-votes are not counted for purposes of determining either the number
of votes cast on any matter voted on by the shareholders or whether such matter
has been approved. Abstentions are counted in tabulating the total number of
votes cast on matters voted on by the shareholders at the Annual Meeting.

   
     Properly executed proxies will be voted in the manner directed by the
shareholders. If no direction is given, proxies will be voted as follows: FOR
the election of all nominees named under the caption "Election of Directors" as
directors of the Company to serve for their respective terms as described in
this Proxy Statement; FOR the amendments to the Company's 1993 Stock Incentive
Plan (the "Plan") as described more fully in this Proxy Statement under Proposal
2; and FOR the ratification of the selection of KPMG Peat Marwick LLP as
independent auditor of the Company for fiscal year 1998.
    

     The enclosed proxy is being solicited by the Company's Board of Directors
and is revocable at any time prior to its exercise. A proxy may be revoked by
delivery of a written revocation to the Secretary of the Company, by
presentation of a properly executed subsequent proxy or by a vote in person at
the Annual Meeting.

   
     This Proxy Statement, the enclosed Proxy Card and the Company's Annual
Report for the year ended December 31, 1997 are scheduled to be mailed
commencing on or about April 30, 1998 to shareholders of record on April 10,
1998.
    

     On November 4, 1997, GMS Dental Group, Inc., a Delaware corporation ("GMS")
was merged (the "GMS Merger") with and into the Company. Since the GMS Merger,
the principal executive offices of the Company have been located at 22800 Savi
Ranch Parkway, Suite 206, Yorba Linda, California 92887, and on or about June 1,
1998 the Company's principal executive offices will be located at 222 North
Sepulveda Boulevard, Suite 740, El Segundo, California 90245. The Company's
phone number is (714) 998-0587.
<PAGE>
                                   PROPOSAL 1

                              ELECTION OF DIRECTORS

     The shareholders are being asked to elect three individuals to serve on the
Company's Board of Directors for a term of three years and until their
successors are elected and qualified and to elect three individuals appointed to
the Board of Directors in 1997 in order to allow such individuals to serve as
directors for the remainder of their respective terms and until their successors
are elected and qualified.

Classified Board

     The Company's Restated Articles of Incorporation provide that the Company's
Board of Directors shall be divided into three classes, as nearly equal in
number as is reasonably possible, with the members of the Board of Directors
serving staggered terms. At each annual meeting of shareholders, the successors
to the class of directors whose terms expire at the time are elected to hold
office for terms of three years, such that the term of one class of directors
expires at each annual meeting. The preceding notwithstanding, directors serve
until their successors have been duly elected and qualified or until they
resign, become disqualified or disabled, or are otherwise removed.

     The Company has 11 present directors divided into three classes as follows:
Michael T. Fiore, Robert Finzi and H. Wayne Posey, who were appointed to Class
II in November 1997; Grant M. Sadler and L. Theodore Van Eerden, who were
appointed to Class III in November 1997, joining Dany Y. Tse, D.M.D. and Gerald
R. Aaron, D.D.S.; and Kathleen D. La Porte who was appointed to Class I in
November 1997, joining Kenneth D. Hooten, Paul H. Keckley and Craig W. Wong,
D.M.D. The Class I, Class II and Class III directorships expire in 2000, 1998
and 1999, respectively.

     Director Steven R. Bull, D.D.S. who was appointed to Class II in November
1997, resigned from the Board of Directors, effective as of April 1, 1998, and
the number of director positions has been reduced by resolution of the Board to
eleven. Director Hooten has indicated his intention to resign from the Board of
Directors following the sale of 100,000 shares of Common Stock by The
ServiceMaster Company in connection with the Company's proposed public offering
of Common Stock pursuant to its Registration Statement, Registration No.
333-44037, filed with the Securities and Exchange Commission on January 9, 1998.
The Company has agreed that Arthur G. Kaiser, D.D.S., will be made a director of
the Company effective as of the closing of the Company's affiliation with
Dedicated Dental Systems, Inc.

     While directors Sadler and Van Eerden have been appointed to serve until
the annual meeting of shareholders in 1999 and director La Porte has been
appointed to serve until the annual meeting of shareholders in 2000, these
appointments are required to be voted upon by the Company's shareholders in
order for such directors to continue to serve until their terms expire or their
successors have been duly elected and qualified, or until they resign, become
disqualified or disabled, or are otherwise removed.

     The enclosed proxy will be voted, unless authority is withheld or the proxy
is revoked, only for the election of each of the full-term nominees named below
each to serve until the 2001 annual meeting of shareholders and for the election
of the partial-term nominees named below who were originally appointed to the
Board of Directors in 1997, each to serve until the date of the Company's 1999
or 2000 annual meeting of shareholders, as the case may be, or until such
director's successor has been duly elected and qualified or in each case until
such director resigns, becomes disqualified or disabled or is otherwise removed.
In the unanticipated event that any nominee becomes unable to or declines to
serve at the time of the Annual Meeting, the proxies will be voted for a
substitute person nominated by the Board of Directors. The six individuals who
receive the highest number of affirmative votes of shares entitled to vote at
the Annual Meeting will be elected directors of the Company.


                                       2
<PAGE>
Nominees

     Full-Term Nominees. The names and certain information about the full-term
Class II nominees for director as of April 30, 1998 are set forth below:

Name                           Age       Position
- ----                           ---       --------

Michael T. Fiore                44       Co-Chairman of the Board, Chief
                                         Executive Officer and President

Robert Finzi                    44       Director

H. Wayne Posey                  59       Director


     Michael T. Fiore. Mr. Fiore has served as Co-Chairman of the Board, Chief
Executive Officer and President of the Company since joining the Company in
November 1997, the effective date of the GMS Merger. Before joining the Company,
Mr. Fiore was the Chief Executive Officer, President and a director of GMS from
April 1997 to November 1997. From 1986 to March 1997, Mr. Fiore served in
various management positions at Salick Health Care, Inc., a provider of
diagnostic and therapeutic services to patients with catastrophic illness,
principally in the areas of cancer and kidney failure, including serving as a
director, Executive Vice President and Chief Operating Officer, and as President
of its principal subsidiary, Comprehensive Cancer Centers, Inc.

     Robert Finzi. Mr. Finzi has been a director of the Company since November
1997 and served as a director of GMS from October 1996 until the GMS Merger.
Since May 1991, Mr. Finzi has been a Vice President of the Sprout Group, a
division of DLJ Capital Corporation, which is the Managing General Partner of
Sprout Capital VII, L.P. and Sprout Growth II, L.P., and an affiliate of
Donaldson, Lufkin & Jenrette Securities Corporation. Mr. Finzi is also a general
partner of the general partner of a series of investment funds managed by the
Sprout Group and a limited partner of the general partner of ML Venture Partners
II, L.P. From 1984 to 1991, Mr. Finzi was a Vice President of Merrill Lynch
Venture Capital. Mr. Finzi serves on the board of directors of The Cerplex
Group, Inc. ("Cerplex") and, if the merger of Cerplex with and into an
acquisition subsidiary of Aurora Electronics, Inc. ("Aurora") is effected, Mr.
Finzi will become a member of the board of directors of Aurora. In addition, Mr.
Finzi serves on the board of directors of six privately held companies.

     H. Wayne Posey. Mr. Posey has been a director of the Company since November
1997 and served as a director of GMS from December 1996 until the GMS Merger.
Since its inception in 1994, Mr. Posey has served as President, Chief Executive
Officer, director, and a member of the executive committee of ProMedCo. Mr.
Posey was a healthcare consultant from 1975 until 1994, most recently as the
principal in charge of the healthcare services division of McCaslin & Company,
P.C., a public accounting and consulting company in Fort Worth, Texas.

     Partial-Term Nominees. The names and certain information, as of April 30,
1998, about certain individuals appointed in 1997 to the Board of Directors
whose appointments are required to be voted upon by the shareholders of the
Company in order for such individuals to serve for the remainder of their
respective terms are set forth below:

<TABLE>
<CAPTION>
Name                                Age     Position                              Term Ending
- ----                                ---     --------                              -----------
<S>                                 <C>     <C>                                   <C> 
Grant M. Sadler                     51      Vice Chairman of the Board            1999

L. Theodore Van Eerden              42      Executive Vice President, Chief       1999
                                            Development Officer and Director

Kathleen D. La Porte                36      Director                              2000
</TABLE>

     Grant M. Sadler. Mr. Sadler has been Vice Chairman of the Board since the
GMS Merger in November 1997. Prior to joining the Company, Mr. Sadler founded
and served as the Chief Executive Officer, President and 

                                       3
<PAGE>
Secretary of GMS from its inception in October 1996 to April 1997, at which time
he vacated those positions and assumed the position of Chairman of the Board and
served in that capacity until the GMS Merger. Prior to GMS, Mr. Sadler served as
President of Group Management Services, Inc., a dental group consulting practice
formed by Mr. Sadler in 1991.

     L. Theodore Van Eerden. Mr. Van Eerden has served as Executive Vice
President, Chief Development Officer and as a director since November 1997. He
served as Chief Financial Officer of the Company from March 1996 until November
1997. Before joining the Company, Mr. Van Eerden was Vice
President-Administration for HOSTS Corporation, a Vancouver, Washington company
that provides proprietary educational software products and instructional
delivery systems to schools throughout the United States. From April 1993 to
April 1994, Mr. Van Eerden was Director of Development for The ServiceMaster
Company where he focused on mergers and acquisitions and new business
development. Before that, Mr. Van Eerden was Vice President and Chief Financial
Officer of Medical SafeTec, Inc., a manufacturer of medical waste destruction
equipment. Prior to Medical SafeTec, Inc., Mr. Van Eerden served in various
positions with The ServiceMaster Company focusing on mergers and acquisitions.

     Kathleen D. La Porte. Ms. La Porte has been a director of the Company since
November 1997 and served as a director of GMS from October 1996 until the GMS
Merger. From January 1993 to the present, Ms. La Porte has been affiliated with
the Sprout Group, a division of DLJ Capital Corporation, which is the Managing
General Partner of Sprout Capital VII, L.P. and Sprout Growth II, L.P. and an
affiliate of Donaldson, Lufkin & Jenrette Securities Corporation. Ms. La Porte
has served as a general partner of the Sprout Group since December 1993. From
August 1987 to January 1993, Ms. La Porte was a principal at Asset Management
Company, a venture capital firm focused on early stage health care and
technology investments. Ms. La Porte currently serves on the board of directors
of FemRx, Hall Kinion, Onyx Pharmaceuticals and Lynx Therapeutics and three
privately held companies.

     Continuing Directors. The names and certain information, as of April 30,
1998, about certain individuals who are presently serving on the Board of
Directors until 1999 or 2000 and who may continue their service without a vote
of the shareholders at the Annual Meeting are set forth below:

<TABLE>
<CAPTION>
Name                              Age       Position                              Term Ending
- ----                              ---       --------                              -----------
<S>                               <C>       <C>                                   <C> 
Dany Y. Tse, D.M.D.               48        Co-Chairman of the Board and          1999
                                            President of Clinical Services
                                            Council

Gerald R. Aaron, D.D.S.           52        Director                              1999

Kenneth D. Hooten                 35        Director                              2000

Paul H. Keckley                   48        Director                              2000

Craig W. Wong, D.M.D.             42        Director                              2000
</TABLE>

     Dany Y. Tse, D.M.D. Dr. Tse has served as Co-Chairman of the Board and
President of Clinical Services Council since November 1997. Dr. Tse served as
Chairman of the Board since December 1996 and, as President and Chief Executive
Officer of the Company from March 1996 until November 1997. He previously served
as Chairman of the Board from inception in December 1992 to March 1996. Dr. Tse
is a licensed dentist in Oregon and Washington.

   
     Gerald R. Aaron, D.D.S. Dr. Aaron has been a director of the Company since
December 1996 and has served as Vice President and Executive Dental Director
since January 1998. He has been certified as a pediatric dentist since 1976 and
has been employed since 1991 by a professional corporation in the State of
Washington which is affiliated with the Company. See "Certain Relationships and
Related Transactions."
    


                                       4
<PAGE>
     Kenneth D. Hooten. Mr. Hooten has been a director of the Company since June
1996. Since 1995, Mr. Hooten has been Vice President of The ServiceMaster
Company ("ServiceMaster") responsible for managing the ServiceMaster Ventures
Group, an internal venture capital firm. From 1990 to 1995, Mr. Hooten served as
Vice President of Lasalle Partners Ltd., a real estate company.

     Paul H. Keckley. Mr. Keckley has been a director of the Company since
December 1996. Since 1994, he has been Vice President Strategic Development at
PhyCor, Inc. Mr. Keckley previously served as a director of PhyCor, Inc., and
from 1985 to 1994 he was President of The Keckley Group, a market research and
strategic planning firm for hospitals, health systems, medical practices, and
health maintenance organizations.

     Craig W. Wong, D.M.D. Dr. Wong has been a director of the Company since
March 1995. Dr. Wong has been an oral and maxillofacial surgeon licensed to
practice in the states of Washington and Oregon since 1986. Dr. Wong serves as
the Chief of the Department of Oral and Maxillofacial Surgery for certain dental
practices affiliated with the Company located in the States of Oregon and
Washington. Dr. Wong also serves as Section Chief of Oral and Maxillofacial
Surgery for the Veterans Administration Medical Center in Portland, Oregon.

Board Committees and Meetings

     The standing committees of the Board of Directors are the Executive
Committee, the Audit Committee and the Compensation Committee. The Company does
not have a Nominating Committee. The Executive Committee, consisting of
directors Finzi, Fiore, La Porte, Van Eerden and Tse, has all of the authority
of the Board of Directors, except as limited by applicable law. The Audit
Committee, consisting of directors Bull, La Porte and Posey, oversees actions
taken by the Company's independent auditor and reviews the Company's internal
audit controls. The Compensation Committee, consisting of directors Finzi,
Keckley and Posey, reviews the compensation levels of the Company's employees
and makes recommendations to the Board of Directors regarding compensation.

     In 1997, the Board of Directors met eight times, the Compensation Committee
met seven times and the Executive Committee did not meet. No current director
attended fewer than 75 percent of the aggregate of all meetings held while such
individual was a member of the Board of Directors, and no current director
attended fewer than 75 percent of the meetings of the committees in 1997 of
which such individual was a member.

     The Board of Directors recommends a vote FOR each of the nominees named
above.

                                       5
<PAGE>
                                   PROPOSAL 2

                     AMENDMENTS TO 1993 STOCK INCENTIVE PLAN

     The shareholders are being asked to approve a series of amendments to the
Company's 1993 Stock Incentive Plan (the "Plan") to effect the following
changes: (i) increase the maximum number of shares of Common Stock authorized
for issuance over the term of the Plan by 1,000,000 from 1,000,000 shares to
2,000,000 shares; (ii) clarify that the eligibility provisions of the Plan
include dentists and other professionals who are employed by corporations,
partnerships, sole proprietorships or other business organizations
(collectively, the "Affiliated Dental Practices"), which have entered into
agreements with the Company under which the Company manages the non-professional
aspects of the Affiliated Dental Practices; (iii) provide that, unless otherwise
determined by the Board of Directors, options granted to employees under the
Plan will continue to vest after termination or cessation of employment so long
as such former employee is continuously retained by the Company on an
independent contractor basis and for so long as such independent contractor
relationship continues; and (iv) increase the aggregate number of shares of
Common Stock underlying stock options and stock appreciation rights that any
employee may receive under the Plan in any calendar year by 75,000 shares from
75,000 to 150,000 shares. The Board of Directors believes that it is necessary
to increase the number of shares available for issuance under the Plan and the
number of shares underlying grants in any calendar year to enable the Company to
continue using equity incentives to attract and retain the services of key
individuals essential to the Company's long-term success.

     The Plan was adopted by the Board of Directors of the Company on January
25, 1993 and approved by the Company's shareholders on March 3, 1993. It was
subsequently amended on several occasions. The amendments to the Plan for which
shareholder approval is sought under this Proposal 2 were adopted by the Board
of Directors on December 11, 1997 and April 8, 1998, in each case subject to
shareholder approval.

     The amendments to the Plan are intended to reserve a sufficient number of
shares of Common Stock to enable the Company to provide a broad equity incentive
program for the Company's directors, officers, employees and other key
contributors, including key employees of the Affiliated Dental Practices, that
will encourage such persons to continue their service to the Company or the
Affiliated Dental Practices and align such persons' interest with those of the
Company's shareholders. The remaining amendments in this Proposal 2 are intended
to allow the Company to retain the services of qualified individuals by
continuing to recognize their service to the Company.

     The following is a summary of the principal features of the Plan. This
summary does not purport to be a complete description of all the provisions of
the Plan. Any shareholder of the Company who wishes to obtain a copy of the
actual Plan may do so upon written request to the Secretary of the Company at
the Company's principal executive offices.

Structure of the Plan

     Under the Plan, the Company's Board of Directors may grant incentive stock
options ("ISOs"), as defined under Section 422 of the Internal Revenue Code of
1986, as amended (the "Code"), grant options other than ISOs ("Non-Statutory
Stock Options"), grant stock appreciation rights ("SARs") or bonus rights, award
bonuses of Common Stock and sell Common Stock subject to restrictions. Common
Stock issued under the Plan may be subject to such restrictions on transfer,
repurchase rights or other restrictions as the Board of Directors may determine.

     The Board of Directors may delegate to a committee of the Board of
Directors or a senior executive officer, or both, any or all authority for
administration of the Plan. Notwithstanding such authority, only the Board of
Directors may amend or terminate the Plan. The Board of Directors has granted to
the Compensation Committee the broadest non-exclusive authority to administer
the Plan permitted under the Plan.

                                       6
<PAGE>
Eligibility

     Grants and awards may be made under the Plan to directors, officers and key
employees of the Company or any parent or subsidiary of the Company, and any
other key individuals, such as consultants to the Company, who the Board of
Directors or Compensation Committee believes have made or will make an essential
contribution to the Company. However, only employees of the Company may receive
ISOs under the Plan. Although dentists and other professionals employed by any
of the Company's Affiliated Dental Practices may also receive grants and awards
under the Plan, this Proposal 2 clarifies such persons' eligibility under the
Plan.

Price and Exercisablity

     The exercise price per share of an option granted under the Plan is
determined by the Compensation Committee or Board of Directors, but may not be
less than 85 percent of the fair market value of the shares underlying the
option on the date of grant. The option price per share for any grant to an
optionee possessing more than ten percent of the total combined voting power of
all classes of stock of the Company or any parent or subsidiary of the Company
may not be less than 110 percent of the fair market value on the date of such
grant. In addition, the option price with respect to an ISO may not be less than
100 percent of the fair market value of the shares covered by the ISO on the
date of grant. On March 31, 1998, the closing bid price for a share of the
Company's Common Stock on the Nasdaq Small Cap Market was $8.75.

     Except as otherwise provided in the Plan for situations involving
termination of employment or service of the optionee, the Compensation Committee
may determine the time of exercisability of an option grant, provided that (i)
no option may become exercisable at a rate of less than 20 percent per year over
the first five years of the option, and (ii) options may not be exercisable for
fractional shares of Common Stock. The maximum term of any stock option is 10
years, or five years in the case of 10 percent shareholders.

Shares Subject to Plan

     A total of 2,000,000 shares of Common Stock (including the 1,000,000 share
increase subject to shareholder approval under this Proposal 2) have been
reserved for issuance over the ten-year term of the Plan. In no event may any
one participant in the Plan be granted options or SARs under the Plan for more
than an aggregate of 150,000 shares in any calendar year (including the 75,000
share increase subject to shareholder approval under Proposal 2). In addition,
no employee may be granted an ISO under the Plan such that the aggregate fair
market value, on the date of the grant, of the Common Stock with respect to
which ISOs are exercisable for the first time by that employee during any
calendar year, under the Plan and any other incentive stock plan (within the
meaning of Section 422 of the Code) of the Company or any parent or subsidiary
of the Company, exceeds $100,000.

     At March 31, 1998, options for 863,350 shares were outstanding under the
Plan (none of which are subject to shareholder approval under this Proposal 2),
90,112 shares of Common Stock had been issued under the Plan and 46,538 shares
remained available for future grants under the Plan. In addition, at March 31,
1998, options granted under GMS stock option plans assumed by the Company in the
GMS Merger covering 93,353 shares of the Company's Common Stock were also
outstanding, but not subject to the Plan.

     If any option or SAR granted without a related option expires or is
cancelled or terminated and is unexercised in whole or in part, the shares
allocable to the unexercised portion shall again become available for awards
under the Plan, except that shares that are issued on exercise of a SAR that
were allocable to an option, or portion thereof, surrendered in connection with
the exercise of the SAR shall not again become available for awards under the
Plan. If Common Stock sold or awarded as a bonus under the Plan is forfeited to
the Company or repurchased by the Company pursuant to applicable restrictions,
the number of shares forfeited or repurchased will be available again under the
Plan.

                                       7
<PAGE>
Termination of Employment

     Unless otherwise determined by the Compensation Committee or Board of
Directors, if an employee's employment by the Company is terminated by
retirement or for any reason other than such employee's death or disability, any
option, SAR or cash bonus right held by such employee may be exercised at any
time prior to the earlier of its expiration date or the expiration of three
months after the date of the termination, but only if and to the extent the
employee was entitled to exercise the option, SAR or cash bonus right on the
date of expiration. Notwithstanding the foregoing and subject to shareholder
approval of this Proposal 2, unless otherwise determined by the Board of
Directors, any option granted to an employee under the Plan shall continue to
vest in accordance with its terms after termination of employment, so long as
such former employee is continuously retained by the Company on an independent
contractor basis and for so long as such independent contractor relationship
continues uninterrupted. Transfer of the employee to any parent or subsidiary of
the Company is not considered termination for purposes of the Plan. With respect
to grants and awards made to persons who are not employees of the Company, under
the Plan the Board of Directors may establish provisions relating to the
termination of such persons' status with the Company.

     Unless otherwise determined by the Compensation Committee or Board of
Directors, if an employee's employment by the Company or any parent or
subsidiary of the Company is terminated because of such employee's death or
physical disability (within the meaning of Section 22(e)(3) of the Code), any
award or grant held by such employee may be exercised at the earlier of one year
after the date of termination or the expiration date, for the greater of the
number of remaining shares for which the employee (i) was entitled to exercise
under the award or grant on the date of termination, or (ii) would have been
entitled to exercise under the award or grant if such option had been
exercisable as to 50 percent of such award or grant on the date of termination.
If an employee's employment is terminated by death, any award or grant held by
the employee shall be exercisable only by the person or persons to whom the
employee's rights under the award or grant pass by the employee's will or by the
laws of descent and distribution of the state or country of the employee's
domicile at the time of death.

Changes in Capital Structures

     In the event any change is made to the outstanding shares of Common Stock
by reason of any recapitalization, stock dividend, stock split or combination of
shares, appropriate adjustment by the Board of Directors shall be made in the
number and kind of shares for the purchase of which options or SARs may be
granted and for which Common Stock may be awarded as bonuses or sold subject to
restrictions under the Plan.

Payment for Shares and Financial Assistance

     Shares of Common Stock acquired by an optionee under the Plan upon the
exercise of an option may be paid for in cash, including cash that may be the
proceeds of a loan from the Company, in shares of Common Stock previously
acquired by the optionee valued at fair market value, or in any combination of
cash and shares of Common Stock.

Payment by Company to Holder of SARs

     Payment by the Company upon exercise of a SAR may be made in shares of
Common Stock valued at fair market value, or in cash, or partly in Common Stock
and partly in cash, as determined by the Board of Directors. Instead of issuing
fractional shares that may result from the exercise of a SAR, the Company may
pay to the holder thereof cash in an amount equal to the value of the fraction
or, in the discretion of the Board of Directors, the number of shares may be
rounded to the next whole share.

                                       8
<PAGE>
Transferability

     Options, SARs and cash bonus rights granted under the Plan are generally
not assignable or transferable by the optionee and, unless otherwise determined
by the Board of Directors, must be exercised by the optionee during the period
of the optionee's employment or service with the Company or within a specified
period following termination of employment or service.

Amendment and Termination

     The Board of Directors may at any time and from time to time modify or
amend the Plan in such respects as it deems advisable for any reason. However,
no change in an option or SAR already granted to any person shall be made
without the written consent of such person. Furthermore, unless approved by the
shareholders of the Company entitled to vote thereon, no amendment or change
shall be made in the Plan (i) increasing the total number of shares that may be
issued under the Plan, or (ii) changing the class of persons eligible to receive
options under the Plan.

Federal Income Tax Considerations

     Option Grants. Options granted under the Plan may be either ISOs which
satisfy the requirements of Section 422 of the Internal Revenue Code or
Non-Statutory Stock Options which are not intended to meet such requirements.
The federal income tax treatment for the two types of options differs as
follows:

     Incentive Stock Options. No taxable income is recognized by the optionee at
the time of the ISO grant, and no taxable income is generally recognized at the
time the ISO is exercised. The optionee will, however, recognize taxable income
in the year in which the purchased shares are sold or otherwise disposed. For
federal tax purposes, dispositions are divided into two categories: (i)
qualifying and (ii) disqualifying. A qualifying disposition occurs if the sale
or other disposition is made after the optionee has held the shares for more
than two years after the option grant date and more than one year after the
exercise date. If either of these two holding periods is not satisfied, then a
disqualifying disposition will result.

     If the optionee makes a disqualifying disposition of the purchased shares,
then the Company will be entitled to an income tax deduction, for the taxable
year in which such disposition occurs, equal to the excess of (i) the fair
market value of such shares on the option exercise date over (ii) the exercise
price paid for the shares. In no other instance will the Company be allowed a
deduction with respect to the optionee's disposition of the purchased shares.

     Non-Statutory Stock Options. No taxable income is recognized by an optionee
upon the grant of a Non-Statutory Stock Option. The optionee will in general
recognize ordinary income, in the year in which the option is exercised, equal
to the excess of the fair market value of the purchased shares on the exercise
date over the exercise price paid for the shares, and the optionee will be
required to satisfy the tax withholding requirements applicable to such income.

     If the shares acquired upon exercise of the Non-Statutory Stock Option are
unvested and subject to repurchase by the Company in the event of the optionee's
termination of service prior to vesting in those shares, then the optionee will
not recognize any taxable income at the time of exercise but will have to report
as ordinary income, as and when the Company's repurchase right lapses, an amount
equal to the excess of (i) the fair market value of the shares on the date the
repurchase right lapses over (ii) the exercise price paid for the shares. The
optionee may, however, elect under Section 83(b) of the Code to include as
ordinary income in the year of exercise of the option an amount equal to the
excess of (i) the fair market value of the purchased shares on the exercise date
over (ii) the exercise price paid for such shares. If the Section 83(b) election
is made, the optionee will not recognize any additional income as and when the
repurchase right lapses.

                                       9
<PAGE>
     The Company will be entitled to an income tax deduction equal to the amount
of ordinary income recognized by the optionee with respect to the exercised
Non-Statutory Stock Option. The deduction will in general be allowed for the
taxable year of the Company in which such ordinary income is recognized by the
optionee.

     Stock Appreciation Rights. An optionee who is granted a SAR will recognize
ordinary income in the year of exercise equal to the amount of the appreciation
distribution. The Company will be entitled to an income tax deduction equal to
the appreciation distribution for the taxable year in which such ordinary income
is recognized by the optionee.

Deductibility of Executive Compensation

     The Company anticipates that any compensation deemed paid by it in
connection with disqualifying dispositions of ISO shares or exercises of
Non-Statutory Stock Options or SARs granted with an exercise price equal to the
fair market value of the option shares will qualify as performance-based
compensation for purposes of Section 162(m) of the Code and will not have to be
taken into account for purposes of the $1 million limitation on the
deductibility of the compensation paid to certain executive officers of the
Company.

Accounting Treatment

     Option grants with exercise prices less than the fair market value of the
shares on the grant date will result in a compensation expense to the Company's
earnings equal to the difference between the exercise price and the fair market
value of the shares on the grant date. Such expense will be accruable by the
Company over the period that the option shares are to vest. Option grants at 100
percent of fair market value will not result in any charge to the Company's
earnings, but the Company must disclose, in pro-forma statements to its
financial statements, the impact those options would have upon the Company's
reported earnings were the value of those options at the time of grant treated
as compensation expense. Whether or not granted at a discount, the number of
outstanding options may be a factor in determining the Company's earnings per
share on a fully-diluted basis. The grant of SARs will result in a compensation
expense to the Company's earnings measured by the appreciation in the fair
market value of the SAR shares from time to time.

                                       10
<PAGE>
Recent Option Awards Under the Plan

     The table below shows, as to each of the Company's Named Executive
Officers, each nominee for director and the various indicated groups, the number
of shares of Common Stock subject to options granted between January 1, 1997 and
March 31, 1998 under the Plan with the weighted average exercise price payable
per share.

<TABLE>
<CAPTION>
                                                                  Number of Option      Weighted Average
                             Name                                      Shares             Option Prices
- --------------------------------------------------------------    ----------------      ----------------
<S>                                                                    <C>                    <C>  
   
Michael T. Fiore..............................................         50,000                 $8.25
    

Dany Y. Tse, DMD..............................................        106,000                 $5.73

Grant M. Sadler...............................................             --                    --

L. Theodore Van Eerden........................................         63,500                 $5.00

Norman R. Huffaker............................................         53,000                 $8.25

   
All current executive officers as a group (5 persons).........        272,500                 $6.51
    

All current directors who are not executive officers as a
group (7 persons).............................................         12,000                 $7.61

All employees, including current officers who are not
executive officers, as a group (34 persons)...................        382,700                 $6.71
</TABLE>


New Plan Benefits

     As of March 31, 1998, no options have been granted under the Plan on the
basis of the 1,000,000-share increase to the Plan which forms a part of this
Proposal 2.

Shareholder Approval

     The affirmative vote of the holders of a majority of shares of Common Stock
present or represented at the Annual Meeting is required for approval of the
amendments to the Plan. If the required shareholder approval is not obtained,
then the number of shares available for issuance under the Plan will remain at
1,000,000 shares. The Plan will, however, continue to remain in effect and
option grants or stock issuances may continue under the Plan pursuant to the
provisions in effect prior to the amendments summarized in this Proposal 2,
until the available shares of Common Stock have been issued pursuant to grants
and awards under the Plan.

     The Board of Directors recommends a vote FOR the approval of the amendments
to the Plan set forth in Proposal 2.

   
    

                                       11
<PAGE>
   
                                   PROPOSAL 3
    
                RATIFICATION OF SELECTION OF INDEPENDENT AUDITOR

     The accounting firm of KPMG Peat Marwick LLP served as the independent
auditor of the Company for the fiscal year ended December 31, 1997. The Board of
Directors has selected KPMG Peat Marwick LLP as the Company's independent
auditor for the fiscal year ending December 31, 1998 and has further directed
that the selection of the auditor be submitted for ratification by the
shareholders at the Annual Meeting. Neither KPMG Peat Marwick LLP nor any of its
members has any relationship with the Company or any of its affiliates except in
the firm's capacity as the Company's auditor. Representatives of KPMG Peat
Marwick LLP are not expected to be present at the Annual Meeting.

     Shareholder ratification of the selection of KPMG Peat Marwick LLP as the
Company's independent auditor is not required by the Company's Bylaws or
otherwise. However, the Board of Directors is submitting the selection of KPMG
Peat Marwick LLP to the shareholders for ratification as a matter of good
corporate practice. If the shareholders fail to ratify the selection by an
affirmative vote of the holders of majority of the Common Stock present or
represented at the meeting and entitled to vote thereat, the Audit Committee of
the Board of Directors will reconsider whether to retain that firm. Even if the
selection is ratified, the Audit Committee and the Board of Directors in their
discretion may direct the appointment of a different independent accounting firm
at any time during the year if they determine that such a change would be in the
best interests of the Company and its shareholders.

     The Board of Directors recommends a vote FOR the ratification of the
selection of KPMG Peat Marwick LLP as the Company's independent auditor.

                                       12
<PAGE>
                              VOTING SECURITIES AND
                             PRINCIPAL SHAREHOLDERS

     On April 10, 1998, there were 7,802,660 outstanding shares of the Company's
common stock (the "Common Stock"). Each share of Common Stock is entitled to one
vote on all matters properly brought before the Annual Meeting. The only
outstanding authorized voting security of the Company is Common Stock. There are
no cumulative voting rights associated with the Common Stock.

     The following table sets forth certain information regarding the beneficial
ownership of the Company's Common Stock as of March 31, 1998 by (i) each person
known by the Company to own beneficially more than five percent of the Common
Stock, (ii) each director of the Company, and (iii) the Chief Executive Officer
and each other Named Executive Officer (as such term is defined below under the
caption "Executive Officers of the Company." Except as otherwise noted, the
Company believes the persons listed below have sole investment and voting power
with respect to the Common Stock owned by them.

<TABLE>
<CAPTION>
                                                                                   Shares          Percentage of
                                                                             Beneficially           Common Stock
Name and Address of Beneficial Owner(1)                                             Owned     Beneficially Owned
- ---------------------------------------------------------------------------  ------------     ------------------
<S>                                                                             <C>                       <C>   
Sprout Capital VII L.P. and certain related entities (2)...................     1,649,562                 21.14%
   3000 Sand Hill Road
   Bldg. 3, Suite 170
   Menlo Park, CA 94025
Accel V L.P. and certain related entities (3)..............................       524,708                  6.72%
   c/o Accel Partners
   428 University Avenue
   Palo Alto, CA 94301
Bessemer Venture Partners GMS..............................................       393,530                  5.04%
   83 Walnut Street
   Wellesley Hills, MA 02181
ServiceMaster Venture Fund L.L.C. (4)......................................       200,000                  2.53%
   One ServiceMaster Way
   Downers Grove, IL 60515
Michael T. Fiore (5).......................................................       356,772                  4.57%
Dany Y. Tse, DMD (6).......................................................       629,411                  8.04%
Grant M. Sadler (7)........................................................       395,541                  5.07%
L. Theodore Van Eerden (8).................................................        28,175                  *
Norman R. Huffaker (9).....................................................         5,564                  *
Gerald R. Aaron, DDS (10)..................................................        11,250                  *
Kenneth D. Hooten (11).....................................................       200,000                  2.53%
Paul H. Keckley (12).......................................................           400                  *
Craig W. Wong, DMD (13)....................................................        89,500                  1.15%
Steven R. Bull, DDS (14)...................................................         2,782                  *
Wayne Posey (15)...........................................................        29,017                  *
Robert Finzi (16)..........................................................     1,649,562                 21.14%
Kathleen D. La Porte (16)..................................................     1,649,562                 21.14%
All directors and officers as a group (13 persons) (17)....................     3,397,974                 42.04%

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

*    Less than one percent.

                                       13
<PAGE>
(1)  Unless otherwise indicated the address of each named person listed in the
     table is 22800 Savi Ranch Parkway, Suite 206, Yorba Linda, California 92887
     until the first week of June, 1998, after which time the address is 222
     North Sepulveda Boulevard, Suite 740, El Segundo, California 90245.
(2)  Consists of the following shares: 793,600 shares held by Sprout Capital VII
     L.P. ("Sprout"); 164,956 held by DLJ First ESC L.L.C. ("DLJ First");
     648,797 shares held by Sprout Growth II, L.P. ("Sprout Growth"), 9,218
     shares held by the Sprout CEO Fund, L.P. ("Sprout CEO"); and 32,991 shares
     held by DLJ Capital Corporation ("DLJ Capital"). DLJ Capital is the
     Managing General Partner of each of Sprout CEO, Sprout Growth and Sprout
     Capital VII and has voting and investment control over the shares held by
     each of these three shareholders. DLJ LBO Plans Management Corporation is
     the manager of DLJ First and has voting and investment control over the
     shares held by DLJ First.
(3)  Consists of the following shares: 422,914 shares held by Accel V L.P.
     ("A5"); 56,669 shares held by Accel Internet/Strategic Technology Fund L.P.
     ("AISTF"); 25,186 shares held by Accel Investors `96 L.P. ("AI96"); 11,544
     shares held by Ellmore C. Patterson Partners ("ECPP"); and 8,395 shares
     held by Accel Keiretsu V L.P. ("AK5") (A5, AISTF, AI96, ECPP, AK5 and A5A
     collectively, the "Accel Entities"). Arthur C. Patterson, ACP Family
     Partnership L.P., James R. Swartz, James W. Breyer, The Breyer 1995 Trust
     dated 10/4/95, Eugene D. Hill, Swartz Family Partnership L.P., Luke B.
     Evnin, and G. Carter Sednaoui share control of the Accel Entities and
     disclaim beneficial ownership of the shares held by the Accel Entities
     except to the extent of their respective pecuniary interests.
(4)  Includes 100,000 shares subject to an exercisable warrant. ServiceMaster
     Venture Fund L.L.C. is a subsidiary of the ServiceMaster Company Limited
     Partnership, which in turn is a subsidiary of ServiceMaster Limited
     Partnership, a NYSE-listed limited partnership.
   
(5)  Includes 16,691 shares currently subject to repurchase by the Company and
     16,691 shares subject to repurchase by the Company in January 1999 if
     certain performance targets are not met, all at $0.45 per share. See
     "Certain Relationships and Related Transactions."
    
(6)  Includes 89,800 shares subject to exercisable options, 34,500 shares
     subject to an exercisable warrant and 3,500 shares held by Dr. Tse's wife.
   
(7)  Includes 110,255 shares currently subject to repurchase by the Company and
     110,255 shares subject to repurchase by the Company in January 1999 if
     certain performance targets are not met, all at $0.225 per share. Also
     includes 170,169 shares subject to repurchase by the Company at a price of
     $0.225 per share, which rights lapse at a rate of 2,431 shares per month
     until October 31, 2000, at which time the Company's rights will have lapsed
     as to all such 170,169 shares. See "Certain Relationships and Related
     Transactions."
    
(8)  Includes 25,200 shares subject to options exercisable within 60 days after
     March 31, 1998 and 2,875 shares subject to an exercisable warrant.
(9)  Includes 5,564 shares subject to an option exercisable within 60 days after
     March 31, 1998
(10) Includes 9,000 shares subject to options exercisable within 60 days after
     March 31, 1998.
(11) Includes 200,000 shares beneficially owned by ServiceMaster Venture Fund
     L.L.C. Mr. Hooten, as a Vice President of The ServiceMaster Company, which
     manages ServiceMaster Venture Fund L.L.C., may be deemed to share voting
     and dispositive power with respect to such shares. Mr. Hooten disclaims
     beneficial ownership of these shares.
(12) Includes 400 shares subject to an option exercisable within 60 days after
     March 31, 1998.
(13) Includes 1,600 shares subject to an exercisable option and 6,900 shares
     subject to an exercisable warrant.
(14) Includes 2,782 shares subject to options exercisable within 60 days after
     March 31, 1998. Dr. Bull has resigned from the Company's Board of
     Directors, effective as of April 1, 1998.
(15) Includes 2,782 shares subject to options exercisable within 60 days after
     March 31, 1998.
(16) Includes 1,649,562 shares beneficially owned by Sprout Capital VII, L.P.
     and certain related entities. Mr. Finzi and Ms. La Porte, as general
     partners of a general partner of entities within this group, may be deemed
     to share voting and dispositive power with respect to such shares. Mr.
     Finzi and Ms. La Porte each disclaims beneficial ownership of these shares.
(17) Includes 135,462 shares subject to options exercisable within 60 days after
     March 31, 1998, 144,275 shares subject to exercisable warrants, 147,976
     shares currently subject to repurchase by the Company and 105,916 shares
     subject to repurchase by the Company if certain performance targets are not
     met.
</TABLE>

                                       14
<PAGE>
                        EXECUTIVE OFFICERS OF THE COMPANY

Executive Officers

     The following table sets forth certain information for each person who
served as chief executive officer of the Company in 1997 and all other current
executive officers of the Company whose annual income in 1997 exceeded $100,000
(collectively, the "Named Executive Officers").

<TABLE>
<CAPTION>
            Name                Age                                   Position
- -----------------------------   ---       -------------------------------------------------------------------
<S>                              <C>      <C>
Michael T. Fiore.............    44       Co-Chairman of the Board, Chief Executive Officer and President

Dany Y. Tse, DMD.............    47       Co-Chairman of the Board and President of Clinical Services Council

Grant M. Sadler..............    51       Vice Chairman of the Board

L. Theodore Van Eerden.......    42       Executive Vice President, Chief Development Officer and Director

Norman R. Huffaker...........    51       Chief Financial Officer
</TABLE>

   
     For a description of the backgrounds of Michael T. Fiore, Dany Y. Tse, DMD,
Grant M. Sadler, and L. Theodore Van Eerden, see "Proposal 1 -- Nominees, and --
Continuing Directors."
    

     Norman R. Huffaker. Mr. Huffaker has served as Chief Financial Officer of
the Company since November 1997. Prior to joining the Company in November 1997,
Mr. Huffaker served as Chief Financial Officer of GMS from December 1996 to
November 1997. Mr. Huffaker previously served as Vice President of Finance for
Community Dental Services, Inc. (SmileCare Dental Group), an Irvine, California
based dental HMO and staff model practice company. Prior to SmileCare Dental
Group, Mr. Huffaker served as Senior Vice President of Finance for Abbey/Foster,
a multi-location home health care company.

                                       15
<PAGE>
                             EXECUTIVE COMPENSATION

Summary Compensation Table

     The following table sets forth compensation information about the Named
Executive Officers.

<TABLE>
<CAPTION>
                                                                                         Long-Term
                                                                       Annual           Compensation
                                                                    Compensation        ------------
                                                                --------------------         Options         All Other
Name and Principal Position                            Year         Salary     Bonus         Granted      Compensation
- -----------------------------------------------------  ----     ----------   -------    ------------      ------------
<S>                                                    <C>      <C>          <C>          <C>                <C>      
Michael T. Fiore.....................................  1997     $   35,000   $50,000         --              $2,000(1)
   Co-Chairman of the Board, Chief Executive           1996     $   --       $  --           --                 --
   Officer and President (2)(3)

Dany Y. Tse, DMD.....................................  1997     $  212,887   $83,000      125,000(5)            --
   Co-Chairman of the Board, President of Clinical     1996     $  187,313   $  --           --              $3,339(6)
   Services Council(4)

Grant M. Sadler......................................  1997     $   29,166   $15,000         --                 --
   Vice Chairman of the Board(2)(7)                    1996     $   --       $  --           --                 --

L. Theodore Van Eerden...............................  1997     $  122,994   $60,000      101,000(8)            --
   Executive Vice President Chief Development          1996     $   77,500   $  --         37,500               --
   Officer

Norman R. Huffaker...................................  1997     $   23,334   $25,000       44,508(10)           --
   Chief Financial Officer (2)(9)                      1996     $   --       $  --           --                 --

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

(1)  Consists of auto allowances from November 4, 1997 (the effective date of
     the GMS Merger).
(2)  Amounts shown reflect compensation earned from November 4, 1997 (the
     effective date of the GMS Merger) through December 31, 1997.
   
(3)  Mr. Fiore's annual base compensation was $225,000 in 1997 and has been
     increased to $250,000 on and as of April 1, 1998. At December 31, 1997, Mr.
     Fiore held 333,816 shares of Common Stock as unvested restricted stock. At
     December 31, 1997, the value of these shares, net of the amount paid for
     the shares, was $2,770,908. See "Certain Relationships and Related 
     Transactions."
    
(4)  Dr. Tse served as President and Chief Executive Officer of the Company
     until November 4, 1997.
(5)  Includes options for 50,000 shares repriced at the time of the Company's
     initial public offering in February 1997.
(6)  Consists of matching contributions made by the Company to the Company's
     401(k) Plan.
   
(7)  Mr. Sadler's annual base compensation is currently $175,000. At December
     31, 1997, Mr. Sadler held 303,162 shares of unvested restricted stock. At
     December 31, 1997, the value of these shares, net of the amount paid for
     the shares, was $2,622,630. See "Certain Relationships and Related
     Transactions."
    
(8)  Includes options for 37,500 shares originally granted in 1996 and repriced
     at the time of the initial public offering.
(9)  Mr. Huffaker's annual base compensation is currently $140,000.

(10) Consists of options to purchase 100,000 shares of GMS Common Stock granted
     to Mr. Huffaker by GMS on December 4, 1996, which options were converted
     into options to purchase 44,508 shares of Common Stock in connection with
     the GMS Merger on November 4, 1997.
</TABLE>

                                       16
<PAGE>
Employment Agreements

     The Company has entered into certain employment agreements with its
executive officers under which the annual base salaries of Mr. Fiore, Dr. Tse,
Mr. Sadler, Mr. Van Eerden, and Mr. Huffaker are $250,000, $243,000, $175,000,
$140,000, and $140,000, respectively. The executive officers are also entitled
to participate in bonus plans maintained or established by the Company. The
employment agreements for Dr. Tse and Mr. Van Eerden provide for terms through
April 30, 2002, and the employment agreement for Mr. Fiore provides for a term
through July 31, 1999, during which they may not be terminated without cause.
Mr. Fiore, Dr. Tse, Mr. Sadler, Mr. Van Eerden and Mr. Huffaker are entitled to
continuation of their base salaries (for Mr. Fiore and Dr. Tse in part under
consulting arrangements) for 18 months, three years, nine months, 12 months and
nine months, respectively, if their employment is terminated by the Company
without cause or if they voluntarily terminate their employment for good reason.
In addition, if Mr. Fiore's employment is terminated by the Company without
cause before April 1, 2001, he is entitled to be retained by the Company as a
consultant for a number of months equal to one-half of the number of months
between the termination date and April 1, 2001.

Stock Options Granted in Fiscal 1997

     The following table sets forth information concerning stock options granted
to the Named Executive Officers during 1997:

<TABLE>
<CAPTION>
                                                                Percentage of
                                                    Number of         Options
                                                       Shares      Granted to
                                                   Underlying       Employees
                                                      Options          During      Exercise Price    Expiration
                     Name                             Granted     Fiscal Year           per Share          Date
- ----------------------------------------------   ------------   -------------      --------------    ----------
<S>                                              <C>                 <C>               <C>            <C>
Michael T. Fiore(1)...........................        --               --                --              --

Dany Y. Tse, DMD..............................   31,000(2)            6.1%             $5.50          01/29/02
                                                 50,000(2)(3)         9.8%             $5.50          07/26/05
                                                 44,000(4)            8.6%             $4.125         04/09/02

Grant M. Sadler...............................        --               --                --              --

L. Theodore Van Eerden........................   63,500(5)           12.5%             $5.00          01/29/07
                                                 25,000(3)(6)         4.9%             $5.00          03/19/06
                                                 12,500(3)(7)         2.5%             $5.00          05/31/06

Norman R. Huffaker............................   22,254(8)            4.4%             $0.45          12/04/06
                                                 22,254(9)            4.4%             $0.45          12/04/06

- --------------
   
(1)  Does not include options for 333,816 shares of Common Stock (on a post-GMS
     Merger basis) granted to Mr. Fiore by GMS and exercised on April 1, 1997,
     prior to the GMS Merger. See "Certain Relationships and Related 
     Transactions."
    
(2)  This option was fully exercisable at the time of grant.
(3)  Although this option was originally granted prior to 1997, it was repriced
     at the time of the Company's Initial Public Offering in February 1997.
(4)  This option becomes exercisable for 20 percent of the shares on each of the
     first five anniversaries of the April 9, 1997 grant date.
(5)  This option becomes exercisable for 20 percent of the shares on each of the
     first five anniversaries of the January 29, 1997 grant date.
(6)  This option becomes exercisable for 20 percent of the shares on each of the
     first five anniversaries of the March 19, 1996 grant date.

                                       17
<PAGE>
(7)  This option becomes exercisable for 20 percent of the shares on each of the
     first five anniversaries of the May 31, 1996 grant date.
(8)  This option becomes exercisable for 25 percent of the shares on each of the
     first four anniversaries of December 4, 1996 original date of grant by GMS.
(9)  This option will become exercisable for one-half of the shares if, among
     other things, the Company's earnings before interest, taxes, depreciation
     and amortization ("EBITDA") (excluding CEO salary and related expense)
     for 1997 exceeds $6,298,000, and will become exercisable for only a portion
     of that one-half of the shares if such EBITDA exceeds $4,723,500 but does
     not exceed $6,298,000. This option will become exercisable for the entire
     second half of the shares if, among other things, the Company's EBITDA
     (excluding CEO salary and related expense) for 1998 exceeds $16,911,000,
     and will become exercisable for a portion of that half of the shares if
     such EBITDA exceeds $12,683,250 but does not exceed $16,911,000. To the
     extent the performance targets are not met, this option will be forfeited.
</TABLE>

Aggregated Option Exercises and Fiscal Year-End Option Values

     No options were exercised by the Named Executive Officers during 1997. The
following table sets forth certain information concerning the number of shares
covered by both exercisable and unexercisable stock options as of December 31,
1997. Also reported are values of "in-the-money" options that represent the
positive spread between the respective exercise prices of outstanding stock
options and the fair market value of the Company's Common Stock as of December
31, 1997.

<TABLE>
<CAPTION>
                          Fiscal Year-End Option Value

                                                                  Number of Shares                  Value of
                                                               Subject to Unexercised         In-the-Money Options
                                                              Options at Fiscal Year-End       Fiscal Year-End(1)
                                                             ---------------------------   ---------------------------
                         Name                                Exercisable   Unexercisable   Exercisable   Unexercisable
- ----------------------------------------------------------   -----------   -------------   -----------   -------------
<S>                                                            <C>            <C>            <C>            <C>
Michael T. Fiore..........................................       --             --              --             --
Dany Y. Tse, DMD..........................................     81,000         44,000         $708,750       $385,000
Grant M. Sadler...........................................       --             --              --             --
L. Theodore Van Eerden....................................      7,500         93,500         $ 65,625       $818,125
Norman R. Huffaker........................................      5,563         38,945            --          $340,769

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

(1)  Based on the Closing price of $8.75 per share on December 31, 1997.
   
(2)  Does not include options for 333,816 shares of Common Stock (on a post-GMS
     Merger basis) granted to Mr. Fiore by GMS and exercised on April 1, 1997,
     prior to the GMS Merger. See "Certain Relationships and Related 
     Transactions."
    
</TABLE>

Committee Interlocks and Insider Participation

     The Compensation Committee, and its members are named above in Proposal 1
under the heading "Board Meetings and Committees." No member of the Compensation
Committee was at any time during the 1997 fiscal year or at any other time an
officer or employee of the Company. No executive officer of the Company serves
as a member of the board of directors or compensation committee of any entity
which has one or more executive officers serving as a member of the Company's
Board of Directors or Compensation Committee.

                 CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

     The outstanding capital stock of certain professional corporations located
in the Oregon and Washington (the "Oregon and Washington Professional
Corporations") is owned in whole or in part by Dany Y. Tse and Gerald R. Aaron.
The Company is a party to certain management agreements (the "Management
Agreements") with each of the Oregon and Washington Professional Corporations
pursuant to which the Company earns a significant portion of its revenues.
Effective January 1, 1998, the Company entered into agreements to amend these
Management 

                                       18
<PAGE>
Agreements to conform them to the existing management agreements of Affiliated
Dental Practices historically affiliated with GMS and to increase the Company's
control over the Oregon and Washington Professional Corporations. As
consideration for entering into the amended Management Agreements, the Company
has agreed to pay to the Oregon and one of the Washington Professional
Corporations or certain of their respective designated dental practitioners, in
the aggregate, the following: (i) approximately $1.8 million in cash offset by
approximately $1.8 million of Company receivables due from such Oregon and
Washington Professional Corporations; (ii) the right to receive an aggregate of
either $575,000 in cash in 18 equal monthly installments or options to acquire
230,000 shares of Common Stock at an exercise price of $8.375 per share, subject
to five year vesting, plus options to acquire an aggregate of 110,000 shares of
Common Stock exercisable at $8.375 per share, subject to five year vesting; and
(iii) future cash or options subject to five year vesting in amounts to be
determined according to a formula based upon the operating revenues of such
Oregon and Washington Professional Corporations for fiscal years ending December
31, 1998 and 1999.

     On May 31, 1996, the Company executed a modification of its former loan and
security agreement with Silicon Valley Bank (the "Modification"). In connection
with the Modification, 14 officers, directors, and shareholders of the Company
including Dr. Tse, Dr. Wong and Mr. Van Eerden, provided continuing personal
guarantees on $1,000,000 of the Company's indebtedness to Silicon Valley Bank in
connection with a $1,000,000 increase in availability under such credit
facility. In consideration for the personal guarantees, the Company issued
warrants to purchase an aggregate total of 115,000 shares of the Company's
Common Stock at $7.50 per share. Each guarantor received warrants to purchase
1,150 shares for each $10,000 of indebtedness guaranteed. All of these
guarantees terminated in February 1997 upon the repayment of the loan.

     The above-described transactions with related parties were on terms the
Company's Board of Directors believed to be fair to the Company and no less
favorable to the Company than terms that could have been obtained from an
unrelated party. Future transactions between the Company and Affiliated Dental
Practices controlled by officers, directors, and principal shareholders of the
Company will be carried out pursuant to a related party transaction policy
adopted by the Company's Board of Directors. The policy provides that any
transaction between the Company and (i) an officer, director, or principal
shareholder of the Company or (ii) any entity that is controlled by officers,
directors, or principal shareholders of the Company must be approved by at least
a majority of the Company's directors who do not have an interest in the
transaction. The terms of such transactions must be no less favorable to the
Company than those that are generally available from unaffiliated third parties.

     On April 1, 1997, Mr. Fiore was granted stock options by GMS exercisable
for 750,000 shares of GMS Common Stock at an aggregate exercise price of
$150,000. On the same date, Mr. Fiore exercised the options for all such shares.
The exercise price was paid in the form of a secured promissory note in the
principal amount of $150,000 which bears annual interest at the rate of 6.84%
compounded annually. All unpaid principal and accrued interest becomes due and
payable to the Company on March 31, 2001. In the GMS Merger, the shares
purchased on exercise of Mr. Fiore's options were converted into 333,816 shares
of Common Stock. Of these shares, 300,434 shares are subject to a four year
vesting schedule under which 25% of the shares vested on April 1, 1998 and the
remaining shares vest in equal amounts over the next 36 months. All unvested
shares are subject to repurchase by the Company at $0.45 per share upon
termination of Mr. Fiore's service to the Company for any reason. Of the
remaining 33,382 shares of Common Stock held by Mr. Fiore, one half are
currently subject to repurchase by the Company at $0.45 per share because the
Company's EBITDA (excluding CEO salary and related expense) for 1997 did not
exceed $4,723,500. The second half of the remaining shares are subject to
repurchase by the Company at the same price if, among other things, the
Company's EBITDA (excluding CEO salary and related expense) for 1998 does not
exceed $12,683,250, and a portion of the second half will be subject to
repurchase if such EBITDA does not exceed $16,911,000.

     In 1996, Mr. Sadler purchased from GMS 888,681 shares of GMS Common Stock
for $88,868. The purchase price was paid in part in the form of secured
promissory note in the principal amount of $87,911, which bears interest at the
rate of 6.84%, compounded annually. All unpaid principal and accrued interest on
such promissory note becomes due and payable on August 31, 2000. In the GMS
Merger, the foregoing shares were converted into 395,541 shares of Common Stock.
Of these shares, 175,031 shares are subject to a four year vesting schedule
under 

                                       19
<PAGE>
which one fourth of the shares vested immediately upon issuance, another one
fourth vested on October 11, 1997 and the remaining shares vest in equal amounts
over the next 36 months thereafter. All unvested shares are subject to
repurchase by the Company at $0.225 per share upon termination of Mr. Sadler's
service to the Company for any reason. In addition, 110,255 shares of Common
Stock held by Mr. Sadler are currently subject to repurchase by the Company at
$0.225 per share because the Company's EBITDA (excluding CEO salary and related
expense) for 1997 did not exceed $4,723,500. Another 110,255 shares are subject
to repurchase by the Company at the same price if, among other things, the
Company's EBITDA (excluding CEO salary and related expense) for 1998 does not
exceed $12,683,250, and a portion of those shares will be subject to repurchase
if such EBITDA does not exceed $16,911,000.

     An additional 340,255 shares of Common Stock held by certain other former
GMS shareholders (including 42,060 shares held by Sprout Capital VII and certain
related entities are also subject to repurchase by the Company at an average
price of $0.37 per share ($.45 per share for Sprout Capital VII and certain
related entities). One half of the shares are currently subject to repurchase
because the Company's EBITDA (excluding CEO salary and related expense) for 1997
did not exceed $4,723,500. The second half of the shares are subject to
repurchase if, among other things, the Company's EBITDA (excluding CEO salary
and related expense) for 1998 does not exceed $12,683,250, and a portion of the
second half will be subject to repurchase if such EBITDA does not exceed
$16,911,000.

             SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

     Section 16(a) of the Securities Exchange Act of 1934 requires the Company's
executive officers, directors and persons who own more than 10 percent of the
Common Stock to file reports of ownership and changes in ownership with the
Securities and Exchange Commission ("SEC"). Executive officers, directors and
beneficial owners of more than ten percent of the Common Stock are required by
SEC regulation to furnish the Company with copies of all Section 16(a) forms
they file. These requirements have been applicable to such persons only since
January 28, 1998. Accordingly, no executive officers or directors of the Company
were delinquent in their filings under Section 16(a) during 1997.

                SHAREHOLDER PROPOSALS FOR THE 1999 ANNUAL MEETING

     A shareholder who intends to present a proposal at the Company's 1999
annual meeting of shareholders must submit such proposal to the Company for
inclusion in the Company's 1999 Proxy Statement and Proxy Card not later than
December 31, 1998. Shareholder proposals must be mailed to the attention of the
Company's Secretary at the Company's headquarters located at 222 North Sepulveda
Boulevard, Suite 740, El Segundo, California 90245.

                                  OTHER MATTERS

     Management does not know of any other matters to be brought before the
Annual Meeting. If any other matter is properly presented for consideration at
the Annual Meeting, it is intended that the proxies will be voted by the persons
named therein in accordance with their judgment on such matters.

                                       20
<PAGE>
                 COSTS OF SOLICITATION AND REVOCABILITY OF PROXY

         The Company will bear the cost of preparing and mailing the Proxy
Statement, Proxy Card and any other material furnished to shareholders by the
Company in connection with the Annual Meeting. Proxies will be solicited by use
of the mails, and officers and employees of the Company may also solicit proxies
by telephone or personal contact. Copies of solicitation materials will be
furnished to fiduciaries, custodians, banks, brokerage houses and other
institutions for forwarding to beneficial owners of the stock held in their
names.

         Any person giving a proxy in the form accompanying this Proxy Statement
has the power to revoke it at any time before its exercise. The proxy may be
revoked by filing an instrument of revocation or a duly executed proxy bearing a
later date with the Company to the attention of the Secretary of the Company.
The proxy may also be revoked by voting in person at the meeting. A shareholder
who attends the meeting, however, is not required to revoke the proxy by voting
in person. All valid, unrevoked proxies will be voted at the annual meeting in
accordance with the instructions given.


                                       By Order of the Board of Directors
                                       L. Theodore Van Eerden
                                       Executive Vice President and Secretary
                                       Yorba Linda, California
                                       April 30, 1998

                                       21
<PAGE>
   
    
<PAGE>
                                                                      APPENDIX I


                        (Subject to shareholder approval)

                        GENTLE DENTAL SERVICE CORPORATION

                            1993 STOCK INCENTIVE PLAN


     1. Purpose. The purpose of this 1993 Stock Incentive Plan (the "Plan"), as
amended herein, is to enable Gentle Dental Service Corporation (the "Company")
to attract and retain experienced and able directors, officers, employees and
other key contributors and to provide an additional incentive to these
individuals to exert their best efforts for the Company and its shareholders.

     2. Administration.

          2.1 Board of Directors. The Plan shall be administered by the board of
directors of the Company (the "Board of Directors"), which shall determine and
designate from time to time the persons to whom grants and awards shall be made
and the amounts, terms and conditions of those grants and awards. Subject to the
provisions of the Plan, the Board of Directors may from time to time adopt or
amend rules and regulations relating to administration of the Plan, and the
interpretation and construction of the provisions of the Plan by the Board of
Directors shall be final and conclusive. Whenever the operation of the Plan
requires that the fair market value of the Company's Common Stock be determined,
the fair market value shall be determined by, or in a manner approved by, the
Board of Directors.

          2.2 Committee. The Board of Directors may delegate to a committee of
the Board of Directors or a senior executive officer of the Company, or both
(the "Committee") any or all authority for administration of the Plan. If
authority is delegated to a Committee, all references to the Board of Directors
in the Plan shall mean and relate to the Committee except (i) as otherwise
provided by the Board of Directors, and (ii) that only the Board of Directors
may amend or terminate the Plan as provided in paragraphs 5 and 11.

   
     3. Eligibility. Grants and awards may be made under the Plan to directors,
officers, and key employees of the Company or any parent or subsidiary of the
Company, dentists and other professionals employed by corporations,
partnerships, sole proprietorships or other business organizations
(collectively, the "Affiliated Dental Practices") which have entered into
agreements with the Company under which the Company manages the non-professional
aspects of the Affiliated Dental Practices, and other key individuals such as
consultants to the Company who the Board of Directors believes have made or will
make an essential contribution to the Company; provided, however, that only
employees of the Company shall be eligible to receive Incentive Stock Options
under the Plan.
    

     4. Shares Subject to the Plan. Subject to paragraph 9, an aggregate of
2,000,000 shares of Common Stock of the Company may be issued under the Plan (i)
upon exercise of options and stock appreciation rights granted under the Plan,
(ii) as bonuses under the Plan and (iii) pursuant to sales under the Plan. If
any option under the Plan or stock appreciation right granted without a related
option expires or is cancelled or terminated and is unexercised in whole or in
part, the shares allocable to the unexercised portion shall again become
available for awards under the Plan, except that shares that are issued on
exercise of a stock appreciation right that were allocable to an option, or
portion thereof, surrendered in connection with the exercise of the stock
appreciation right shall not again become available for awards under the Plan.
If Common Stock sold or awarded as a bonus under the Plan is forfeited to the
Company or repurchased by the Company pursuant to applicable restrictions, the
number of shares forfeited or repurchased shall again be available under the
Plan. Common Stock issued under the Plan may be subject to such restrictions on
transfer, repurchase rights or other restrictions as are determined by the Board
of Directors. The certificates representing such Common Stock shall bear such
legends as are determined by the Board of Directors.

                                        1
<PAGE>
     5. Effective Date and Duration of Plan.

          5.1 Effective Date. The Plan shall become effective when adopted by
the Board of Directors (the "Effective Date"), but no option shall become
exercisable until the Plan is approved by a vote of the shareholders of the
Company entitled to vote thereon. Subject to this limitation, options and stock
appreciation rights may be granted and Common Stock may be awarded as bonuses or
sold under the Plan at any time after the Effective Date and before termination
of the Plan.

          5.2 Duration of the Plan. The Plan shall continue until, in the
aggregate, options and stock appreciation rights have been granted and exercised
and Common Stock has been awarded as bonuses or sold and the restrictions on any
such Common Stock have lapsed with respect to all shares subject to the Plan
under paragraph 4 (subject to any adjustments under paragraph 9), provided,
however, that unless sooner terminated by the Board of Directors, the Plan shall
terminate on, and no option or stock appreciation right or bonus right shall be
granted and no Common Stock shall be awarded as a bonus or sold under the Plan
on or after, the tenth anniversary of the Effective Date. The Board of Directors
may suspend or terminate the Plan at any time except with respect to options,
stock appreciation rights and bonus rights, and Common Stock subject to
restrictions then outstanding under the Plan. Termination shall not affect any
right of the Company to repurchase shares or the forfeitability of shares issued
under the Plan.

     6. Grants, Awards and Sales.

          6.1 Type of Security. The Board of Directors may, from time to time,
take the following actions, separately or in combination, under the Plan: (i)
grant Incentive Stock Options, as defined in Section 422 of the Internal Revenue
Code of 1986, as amended (the "Code"); (ii) grant options other than Incentive
Stock Options (hereinafter "Non-Statutory Stock Options"); (iii) grant stock
appreciation rights or bonus rights; (iv) award bonuses of Common Stock; and (v)
sell Common Stock subject to restrictions. The Board of Directors shall specify
the action taken with respect to each person granted, awarded or sold any option
or Common Stock under the Plan and shall specifically designate each option
granted under the Plan as an Incentive Stock Option or a Non-Statutory Stock
Option. At the discretion of the Board of Directors, an individual may be given
an election to surrender an award in exchange for the grant of a new award. No
employee may be granted options or stock appreciation rights under the Plan for
more than an aggregate of 150,000 shares of Common Stock in any calendar year.

          6.2 General Rules Relating to Options.

               6.2.1 Time of Exercise. Except as provided in paragraph 8,
options granted under the Plan may be exercised over the period stated in each
option in amounts and at times prescribed by the Board of Directors and stated
in the option, provided that (i) no option granted under the Plan may become
exercisable at a rate of less than 20 percent per year over the first five years
of the option, and (ii) options shall not be exercised for fractional shares. If
the optionee does not exercise an option in any period with respect to the full
number of shares to which the optionee is entitled in that period, the
optionee's rights shall be cumulative and the optionee may purchase those shares
in any subsequent period during the term of the option. 6.2.2 Option Price. The
option price per share of each option granted under the Plan shall be determined
by the Board of Directors, but shall not be less than 85 percent of the fair
market value of the shares covered by the option on the date the option is
granted. With respect to options granted to optionees possessing more than ten
percent (10%) of the total combined voting power of all classes of stock of the
Company or of any parent or subsidiary of the Company (a "Ten Percent Owner"),
the option price per share shall not be less than one hundred ten percent (110%)
of the fair market value on the date the option is granted.

               6.2.3 Duration of Options. Subject to paragraph 8, each option
granted under the Plan shall continue in effect for the period fixed by the
Board of Directors, except that no option granted under the Plan shall be
exercisable after the expiration of 10 years from the date it is granted. No
option granted to a Ten Percent Owner shall be exercisable after the expiration
of five (5) years from the date such option is granted.

               6.2.4 Purchase of Shares. Shares may be purchased or acquired
pursuant to an option granted under the Plan only on receipt by the Company of
notice in writing from the optionee of the optionee's intention to exercise,
specifying the number of shares the optionee desires to purchase and the date on
which the 

                                       2
<PAGE>
optionee desires to complete the transaction, which may not be more than 30 days
after receipt of the notice, and, unless in the opinion of counsel for the
Company such a representation is not required to comply with the Securities Act
of 1933, as amended, containing a representation that it is the optionee's
intention to acquire the shares for investment and not with a view to
distribution. Unless otherwise determined by the Board of Directors, on or
before the date specified for completion of the purchase, the optionee must have
paid the Company the full purchase price in cash, including cash that may be the
proceeds of a loan from the Company, in shares of Common Stock previously
acquired by the optionee valued at fair market value, or in any combination of
cash and shares of Common Stock. No shares shall be issued until full payment
therefor has been made. Each optionee who has exercised an option shall, on
notification of the amount due, if any, and prior to or concurrently with
delivery of the certificates representing the shares for which the option was
exercised, pay to the Company amounts necessary to satisfy any applicable
federal, state and local withholding tax requirements. If additional withholding
becomes required beyond any amount deposited before delivery of the
certificates, the optionee shall pay such amount to the Company on demand. If
the employee fails to pay the amount demanded, the Company shall have the right
to withhold that amount from other amounts payable by the Company to the
optionee, including salary, subject to applicable law.

          6.3 Incentive Stock Options. Incentive Stock Options shall be subject
to the following additional terms and conditions:

               6.3.1 Limitation on Amount of Grants. No employee may be granted
Incentive Stock Options under the Plan such that the aggregate fair market
value, on the date of grant, of the Common Stock with respect to which Incentive
Stock Options are exercisable for the first time by that employee during any
calendar year, under the Plan and under any other incentive stock option plan
(within the meaning of section 422 of the Code) of the Company or any parent or
subsidiary of the Company, exceeds $100,000.

               6.3.2 Option Price. The option price per share under each option
granted under the Plan shall be determined by the Board of Directors in
accordance with paragraph 6.2.2, but the option price with respect to an
Incentive Stock Option shall be not less than 100 percent of the fair market
value of the shares covered by the option on the date the option is granted.

          6.4 Stock Bonuses. Common Stock awarded as a bonus shall be subject to
the terms, conditions and restrictions determined by the Board of Directors at
the time the Common Stock is awarded as a bonus. The Board of Directors may
require the recipient to sign an agreement as a condition of the award, but may
not require the recipient to pay any money consideration except as provided in
the last sentence of this paragraph. The agreement may contain such terms,
conditions, representations and warranties as the Board of Directors may
require. The Company may require any recipient of a Common Stock bonus to pay to
the Company amounts necessary to satisfy any applicable federal, state or local
tax withholding requirements prior to delivery of certificates. If the recipient
fails to pay the amount demanded, the Company may withhold that amount from
other amounts payable by the Company to the recipient, including salary or fees
for services, subject to applicable law. With the consent of the Board of
Directors, a recipient may deliver Common Stock to the Company to satisfy this
withholding obligation.

          6.5 Restricted Stock. The Board of Directors may issue shares of
Common Stock under the Plan for such consideration (including promissory notes
and services) as determined by the Board of Directors in accordance with the law
and with such restrictions concerning transferability, repurchase by the
Company, or forfeiture as determined by the Board of Directors. If shares of
Common Stock are subject to repurchase by the Company at the original purchase
price upon termination of employment of the recipient, such right of repurchase
shall lapse at a rate of no less than twenty percent (20%) per year over five
years from the date the shares are granted. All shares of Common Stock issued
pursuant to this paragraph 6.5 shall be subject to a purchase agreement, which
shall be executed by the Company and the prospective recipient of the Common
Stock prior to the delivery of certificates representing such shares to the
recipient. Subject to the terms of the Plan, the purchase agreement shall
contain such terms and conditions and representations and warranties as the
Board of Directors shall require. The Company may require any purchaser of
restricted stock to pay to the Company in cash upon demand amounts necessary to
satisfy any applicable federal, state or local tax withholding requirements. If
the purchaser fails to pay the amount demanded, the Company may withhold that
amount from other amounts payable by the 

                                       3
<PAGE>
Company to the purchaser, including salary, subject to applicable law. With the
consent of the Board of Directors, a purchaser may deliver Common Stock to the
Company to satisfy this withholding obligation.

          6.6 Stock Appreciation Rights.

               6.6.1 Description. Each stock appreciation right shall entitle
the holder, on exercise, to receive from the Company in exchange therefor an
amount equal in value to the excess of the fair market value on the date of
exercise of one share of Common Stock over its fair market value on the date of
grant (or, in the case of a stock appreciation right granted in connection with
an option, the option price per share under the option to which the stock
appreciation right relates), multiplied by the number of shares covered by the
stock appreciation right or the option, or portion thereof, that is surrendered.

               6.6.2 Exercise. A stock appreciation right shall be exercisable
only at the time or times established by the Board of Directors. If a stock
appreciation right is granted in connection with an option, then it shall be
exercisable only to the extent and on the same conditions that the related
option is exercisable. Upon exercise of a stock appreciation right, any option
or portion thereof to which the stock appreciation right relates must be
surrendered unexercised.

               6.6.3 Payment. Payment by the Company upon exercise of a stock
appreciation right may be made in shares of Common Stock valued at fair market
value, or in cash, or partly in Common Stock and partly in cash, as determined
by the Board of Directors. No fractional shares shall be issued upon exercise of
a stock appreciation right. In lieu thereof, cash may be paid in an amount equal
to the value of the fraction or, in the discretion of the Board of Directors,
the number of shares may be rounded to the next whole share.

               6.6.4 Adjustment. In the event of any adjustment pursuant to
paragraph 9 in the number of shares of Common Stock subject to an option granted
under the Plan, any stock appreciation right granted hereunder in connection
with such option shall be proportionately adjusted.

               6.6.5 Withholding. Each participant who has exercised a stock
appreciation right shall, upon notification of the amount due, pay to the
Company in cash amounts necessary to satisfy any applicable federal, state and
local tax withholding requirements. If the participant fails to pay the amount
demanded, the Company may withhold that amount from other amounts payable by the
Company to the participant including salary, subject to applicable law. With the
consent of the Board of Directors a participant may satisfy this obligation, in
whole or in part, by having the Company withhold from any shares to be issued
upon the exercise that number of shares that would satisfy the withholding
amount due or by delivering Common Stock to the Company to satisfy the
withholding amount.

          6.7 Cash Bonus Rights.

               6.7.1 Grant. The Board of Directors may grant bonus rights under
the Plan in connection with (i) an option or stock appreciation right granted or
previously granted, (ii) Common Stock awarded, or previously awarded, as a bonus
and (iii) Common Stock sold, or previously sold, under the Plan. Bonus rights
will be subject to rules, terms and conditions as the Board of Directors may
prescribe.

               6.7.2 Bonus Rights in Connection with Options and Stock
Appreciation Rights. A bonus right granted in connection with an option will
entitle an optionee to a cash bonus when the related option is exercised (or is
surrendered in connection with the exercise of a stock appreciation right
related to the option) in whole or in part. A bonus right granted in connection
with a stock appreciation right will entitle the holder to a cash bonus when the
stock appreciation right is exercised. Upon exercise of an option, the amount of
the bonus shall be determined by multiplying the excess of the total fair market
value of the shares to be acquired upon the exercise over the total option price
for the shares by the applicable bonus percentage. Upon exercise of a stock
appreciation right, the bonus shall be determined by multiplying the total fair
market value of the shares or cash received pursuant to the exercise of the
stock appreciation right by the applicable bonus percentage. The bonus
percentage applicable to a bonus right shall be determined from time to time by
the Board of Directors but shall in no event exceed 100 percent.

                                       4
<PAGE>
               6.7.3 Bonus Rights in Connection with Stock Bonus. A bonus right
granted in connection with Common Stock awarded as a bonus will entitle the
person awarded such Common Stock to a cash bonus either at the time the Common
Stock is awarded or at such time as restrictions, if any, to which the Common
Stock is subject lapse. If Common Stock awarded is subject to restrictions and
is repurchased by the Company or forfeited by the holder, the bonus right
granted in connection with such Common Stock shall terminate and may not be
exercised. The amount of cash bonus to be awarded and the time such cash bonus
is to be paid shall be determined from time to time by the Board of Directors.

               6.7.4 Bonus Rights in Connection with Stock Purchase. A bonus
right granted in connection with Common Stock purchased hereunder (excluding
Common Stock purchased pursuant to an option) shall terminate and may not be
exercised in the event the Common Stock is repurchased by the Company or
forfeited by the holder pursuant to restrictions applicable to the Common Stock.
The amount of cash bonus to be awarded and the time such cash bonus is to be
paid shall be determined from time to time by the Board of Directors.

     7. Nontransferability. Each option, stock appreciation right, or cash bonus
right granted under the Plan by its terms shall be nonassignable and
nontransferable by the holder except by will or by the laws of descent and
distribution of the state or country of the holder's domicile at the time of
death, and each option, stock appreciation right or cash bonus right by its
terms shall be exercisable during the holder's lifetime only by the holder.

     8. Termination of Employment.

          8.1 Retirement or General Termination. Unless otherwise determined by
the Board of Directors, if an employee's employment by the Company or any parent
or subsidiary of the Company is terminated by retirement or for any reason other
than in the circumstances specified in 8.2 below, any option, stock appreciation
right or cash bonus right held by the employee may be exercised at any time
prior to its expiration date or the expiration of three months after the date of
the termination, whichever is the shorter period, but only if and to the extent
the employee was entitled to exercise the option, stock appreciation right or
cash bonus right on the date of termination. Notwithstanding the foregoing
provisions of this subparagraph 8.1, unless otherwise determined by the Board of
Directors, any option granted to an employee under the Plan shall continue to
vest in accordance with its terms after termination of employment, so long as
such former employee is continuously retained by the Company on an independent
contractor basis and for so long as such independent contractor relationship
continues uninterrupted. Transfer of an employee by the Company or any parent or
subsidiary of the Company to the Company or any parent or subsidiary of the
Company shall not be considered a termination for purposes of the Plan.

          8.2 Death or Disability. Unless otherwise determined by the Board of
Directors, if an employee's employment by the Company or any parent or
subsidiary of the Company is terminated because of death or physical disability
(within the meaning of section 22(e)(3) of the Code), any option, stock
appreciation right or cash bonus right held by the employee may be exercised at
any time prior to its expiration date or the expiration of one year after the
date of termination, whichever is the shorter period, for the greater of (a) the
number of remaining shares for which the employee was entitled to exercise the
option, stock appreciation right or cash bonus right on the date of termination
or (b) the number of remaining shares for which the employee would have been
entitled to exercise the option, stock appreciation right or cash bonus right if
such option or right had been 50 percent exercisable on the date of termination.
If an employee's employment is terminated by death, any option, stock
appreciation right or cash bonus right held by the employee shall be exercisable
only by the person or persons to whom the employee's rights under the option,
stock appreciation right or cash bonus right pass by the employee's will or by
the laws of descent and distribution of the state or country of the employee's
domicile at the time of death.

          8.3 Termination of Unexercised Rights. To the extent an option, stock
appreciation right or cash bonus right held by any deceased employee or by any
employee whose employment is terminated is not exercised within the limited
periods provided above or otherwise provided by the Board of Directors, all
further rights to exercise the option, stock appreciation right or cash bonus
right shall terminate at the expiration of such periods.

                                       5
<PAGE>
          8.4 Termination of Non-Employees. With respect to options, stock
appreciation rights and cash bonus rights granted to persons who are not
employees of the Company, the Board of Directors may establish provisions
relating to the termination of those persons' status with the Company.

     9. Changes in Capital Structure. If the outstanding shares of Common Stock
are increased or decreased or changed into or exchanged for a different number
or kind of shares or other securities of the Company or of another corporation,
by reason of any reorganization, merger, consolidation, plan of exchange,
recapitalization, reclassification, stock split-up, combination of shares, or
dividend payable in shares, appropriate adjustment shall be made by the Board of
Directors in the number and kind of shares for the purchase of which options or
stock appreciation rights may be granted and for which Common Stock may be
awarded as bonuses or sold subject to restrictions under the Plan. In addition,
the Board of Directors shall make appropriate adjustments in the number and kind
of shares as to which outstanding options, or portions thereof then unexercised,
shall be exercisable, and the number and kind of shares covered by outstanding
stock appreciation rights to the end that each optionee's proportionate interest
shall be maintained as before the occurrence of such event. Adjustments in
outstanding options shall be made without change in the total price applicable
to the unexercised portion of any option and with a corresponding adjustment in
the option price per share. Adjustments in outstanding stock appreciation rights
shall be made without change in their total value. Any such adjustment made by
the Board of Directors shall be conclusive. In the event of dissolution or
liquidation of the Company or a merger, consolidation, or plan of exchange
affecting the Company, in lieu of making adjustments as provided for above in
this paragraph 9, the Board of Directors may, in its sole discretion, provide a
30-day period immediately preceding the event during which optionees shall have
the right to exercise options or stock appreciation rights to the extent options
are exercisable at such time. Upon the expiration of such 30-day period all
unexercised options shall be terminated and optionees shall have no further
rights to acquire shares.

     10. Corporate Mergers, Acquisitions, Etc. The Board of Directors may also
grant options and stock appreciation rights having terms and provisions which
vary from those specified in this Plan, provided that any options and stock
appreciation rights granted pursuant to this section are granted in substitution
for, or in connection with the assumption of, existing options and stock
appreciation rights granted by another corporation and assumed or otherwise
agreed to be provided for by the Company pursuant to or by reason of a
transaction involving a corporate merger, consolidation, acquisition of property
or stock, separation, reorganization or liquidation to which the Company or a
subsidiary is a party.

     11. Amendment of Plan. The Board of Directors may at any time and from time
to time modify or amend the Plan in such respects as it deems advisable because
of changes in the law while the Plan is in effect or for any other reason. After
the Plan has been approved by the shareholders and except as provided in
paragraph 9, however, no change in an option or stock appreciation right already
granted to any person shall be made without the written consent of such person.
Furthermore, unless approved by the shareholders of the Company entitled to vote
thereon, no amendment or change shall be made in the Plan (a) increasing the
total number of shares that may be issued under the Plan, or (b) changing the
class of persons eligible to receive options under the Plan.

     12. Approvals. The obligations of the Company under the Plan are subject to
the approval of state and federal authorities or agencies with jurisdiction in
the matter. The Company will use its best efforts to take steps required by
state or federal law or applicable regulations, including rules and regulations
of the Securities and Exchange Commission in connection with the granting of any
option or the issuance or sale of any shares under the Plan. The foregoing
notwithstanding, the Company shall not be obligated to issue or deliver shares
of Common Stock under the Plan if the Company is advised by its legal counsel
that such issuance or delivery would violate applicable state or federal laws.

     13. Employment Rights. Nothing in the Plan or any grant pursuant to the
Plan shall confer on any employee any right to be continued in the employment of
the Company or any parent or subsidiary of the Company or shall interfere in any
way with the right of the Company or any parent or subsidiary of the Company by
whom such employee is employed to terminate such employee's employment at any
time, with or without cause.

     14. Rights as a Shareholder. A holder of an option or a stock appreciation
right, a recipient of Common Stock awarded as a bonus, or a purchaser of Common
Stock shall have no rights as a shareholder with respect to any shares covered
by any option, stock appreciation right, bonus award, or stock purchase
agreement 

                                       6
<PAGE>
until the date of issue of a stock certificate to him or her for such shares.
Except as otherwise provided in the Plan, no adjustment shall be made for
dividends or other rights for which the record date is prior to the date such
stock certificate is issued.

         15. Information. The Company will provide all recipients of grants or
awards under Plan with financial statements of the Company on at least an annual
basis.

                                       7
<PAGE>
                                      PROXY

                        GENTLE DENTAL SERVICE CORPORATION
                          Annual Meeting, June 4, 1998

                      PROXY SOLICITED BY BOARD OF DIRECTORS

PLEASE SIGN AND RETURN THIS PROXY

   
The undersigned revokes all previous proxies, acknowledges receipt of the Notice
of Annual Meeting of Shareholders to be held on Thursday, June 4, 1998 and the
accompanying Proxy Statement, and appoints Michael T. Fiore and Norman R.
Huffaker, and each of them, the proxy of the undersigned, with full power of
substitution, to vote all shares of the common stock (the "Common Stock") of
Gentle Dental Service Corporation, a Washington corporation (the "Company"),
which the undersigned is entitled to vote, either on the undersigned's own
behalf or on behalf of any entity or entities, at the annual meeting (the
"Annual Meeting") of shareholders of the Company to be held at 222 North
Sepulveda Boulevard, El Segundo, California 90245, on Thursday, June 4, 1998 at
8:00 a.m. Pacific Daylight Savings Time, and at any adjournment or postponement
thereof, with the same force and effect as the undersigned might or could do if
personally present thereat. The shares represented by this proxy shall be voted
in the following manner:
    

<TABLE>
<CAPTION>
<S>                           <C>                               <C>
1.   To elect the following   [  ] FOR all nominees except as   [  ] WITHHOLD AUTHORITY to vote
     directors:                    marked to the contrary            for all nominees listed
                                   below.                            below.
</TABLE>

          (Instructions: To withhold authority to vote for any nominee,
                strike a line through the nominee's name below.)
        Michael T. Fiore, Robert Finzi, H. Wayne Posey, Grant M. Sadler,
                  L. Theodore Van Eerden, Kathleen D. La Porte

2.   To amend the Company's 1993 Stock Incentive Plan (the "Plan") to effect the
     following changes (i) increase the number of shares of Common Stock
     authorized for issuance under the Plan by 1,000,000 shares from 1,000,000
     to 2,000,000 shares; (ii) clarify that the eligibility provisions of the
     Plan include dentists and other professionals who are employed by
     corporations and other businesses which have entered into management
     agreements with the Company under which the Company manages the
     non-professional aspects of such businesses; (iii) provide that, unless
     otherwise determined by the Board of Directors, options granted to
     employees under the Plan will continue to vest after termination or
     cessation of employment so long as such former employee is continuously
     retained by the Company on an independent contractor basis and for so long
     as such independent contractor relationship continues; and (iv) increase
     the aggregate number of shares of Common Stock underlying stock options and
     stock appreciation rights that any employee may receive under the Plan in
     any calendar year by 75,000 shares from 75,000 to 150,000 shares.

         [  ]   For               [  ]   Against           [  ]    Abstain

   
3.   To ratify the selection of KPMG Peat Marwick LLP as the Company's
     independent auditor for fiscal year 1998.
    

         [  ]   For               [  ]   Against           [  ]    Abstain

   
    

     A majority of the proxies or substitutes at the meeting may exercise all
     the powers granted hereby.

   
    
<PAGE>
     The shares represented by this proxy will be voted as specified on the
     reverse hereof, but if no specification is made, this proxy will be voted
     for the election of directors and for each of the other proposals. The
     proxies may vote in their discretion as to other matters that may come
     before the Annual Meeting.

                                       Shares:

                                       Date: _____________________________, 1998
P
R
O                                      _________________________________________
X                                      Signature or Signatures
Y                                      
                                       Please date and sign as name is imprinted
                                       hereon, including designation as
                                       executor, trustee, etc., if applicable. A
                                       corporation must sign its name by the
                                       president or other authorized officer.

   
                                       The Annual Meeting of Gentle Dental
                                       Service Corporation will be held on June
                                       4, 1998 at 8:00 a.m., Pacific Daylight
                                       Savings Time, at 222 North Sepulveda
                                       Boulevard, El Segundo, California 90245.
    


Please Note: Any shares of stock of the Company held in the name of fiduciaries,
custodians or brokerage houses for the benefit of their clients may only be
voted by the fiduciary, custodian or brokerage house itself--the beneficial
owner may not directly vote or appoint a proxy to vote the shares and must
instruct the person or entity in whose name the shares are held how to vote the
shares held for the beneficial owner. Therefore, if any shares of stock of the
Company are held in "street name" by a brokerage house, only the brokerage
house, at the instructions of its client, may vote or appoint a proxy to vote
the shares.


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