<PAGE>
 
                                                                    EXHIBIT 10.8


 
                    [LETTERHEAD OF GMS DENTAL GROUP, INC.]


November 7, 1996


Mr. Norm Huffaker



Dear Norm:

This letter sets forth the basic terms and conditions of your offer of 
employment as the Vice President of Finance and Chief Financial Officer of GMS 
Dental Group, Inc., (the "Company").

     1.   Base Compensation.  During the term of your employment, the Company 
          -----------------
will pay you as compensation for your services as base salary at the annual rate
of $140,000 or at such higher rate as the Company may determine from time to 
time ("Base Salary"). Your Base Salary will be payable in accordance with the 
Company's standard payroll procedures.

     2.   Duties.  You shall perform such executive duties as may be delegated 
          ------
to you by the Board of Directors or Chief Executive Officer of the Company. You 
shall be employed on a full-time basis and shall devote all of your working 
time, attention and energies to the Company during the term of your employment. 
Notwithstanding the preceding, you will not be precluded from engaging in 
appropriate professional, educational, civic, charitable or religious activities
or from devoting a reasonable amount of time to private investments that do not 
interfere or conflict with your responsibilities to the Company. You shall 
principally perform your duties hereunder at the principal executive offices of 
the Company in Yorba Linda, California or such other location within the county 
of Orange, California as may be designated in a notice by the Company to you.

     3.   Terms of Employment.  Your employment with the Company is "at-will". 
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In other words, either you or the Company can terminate your employment at any 
time for any reason, with or without cause.
<PAGE>
 
Mr. Norm Huffaker
November 7, 1996
Page 2 of 6


     4.   Employee Benefits.  During the term of your employment you will be 
          -----------------
eligible for the employee benefit plans and executive compensation programs 
maintained from time to time for other senior executive employees of the Company
to the extent that senior executive employees are eligible to participate in 
such programs and if you qualify for participation in any such program. These 
benefits may change from time to time.

     5.   Additional Benefits.  You will be provided with the following 
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additional benefits:

          (a)  Incentive Bonus.  Prior to each fiscal year-end of the Company 
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during the term of your employment with the Company, the Chief Executive Officer
shall consult with you to develop annual financial performance objectives for 
the Company for the next subsequent fiscal year of the Company. Commencing with 
the Company's 1997 fiscal year and for each fiscal year of the Company 
thereafter during your employment with the Company, the Company shall pay you, 
in addition to your Base Salary, an annual bonus ("Bonus") determined as 
provided below. The Bonus shall be paid within sixty (60) days after the end of 
each fiscal year during the term of your employment with the Company.

          Bonus                                   Performance Goal
          -----                                   ----------------

     40% of Base Salary                      Company exceeds financial 
                                             performance objectives by 10%

     30% of Base Salary; with a linear       Company achieves 100% of financial
     reduction to 0% as the percentage       performance objectives
     of financial performance objectives
     achieved decreases from 100% to 
     75%

     0% of Base Salary                       Company achieves less than 75% of
                                             financial performance objectives



<PAGE>
 
Mr. Norm Huffaker
November 7, 1996
Page 3 of 6


          (b)  Stock Options.  You will receive a grant of options to purchase 
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100,000 shares of the Company's Common Stock which shall be exercisable during 
your term of employment, at an exercise price equal to the fair market value of 
the date of grant as determined in good faith by the Board of Directors of the 
Company. The options will be granted in two separate grants:

               (i)    a grant of options to purchase 50,000 shares of 
          the Company's Common Stock under the Company's 1996 Stock 
          Option Plan which shall vest at the rate of 25% per year
          over four years; and

               (ii)   a grant of options to purchase 50,000 shares of 
          the Company's Common Stock under the Company's 1996
          Performance Stock Option Plan.

You should note the following legend that applies to both the offer contained in
this letter and to the Company's shares that will be issued pursuant to the 
terms of the stock option plans described above:

     THESE SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933.
     THEY MAY NOT BE SOLD, OFFER FOR SALE, PLEDGED, OR HYPOTHECATED IN THE
     ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT RELATED THERETO OR AN
     OPINION OF COUNSEL (WHICH MAY BE COMPANY COUNSEL) REASONABLY SATISFACTORY
     TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED UNDER THE SECURITIES
     ACT OF 1933.

You and the Company will enter into a stock option agreement dated as of the
date of this letter agreement as required under the provisions of the applicable
stock option plan.

     6.   Business Expenses.  During the term of your employment, the Company 
          ------------------
shall reimburse you for necessary and reasonable travel, entertainment and other
business expenses appropriately incurred by you in connection with performing 
your duties. The Company will reimburse you for such expenses upon presentation 
of an itemized account and appropriate supporting documentation, all in 
accordance with the Company's generally applicable policies.
<PAGE>
 
Mr. Norm Huffaker
November 7, 1996
Page 4 of 6


     7.   Proprietary Information Agreement.  You will be required to sign and 
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abide by the terms of the accompanying proprietary information agreement.

     8.   Vacation and Holidays.  You shall be entitled to fully-paid vacation 
          ----------------------
time and holidays consistent with Company policy as may be in place from time to
time.

     9.   Severance Compensation.
          -----------------------

          (a)  In the event that your employment with the Company is terminated 
by the Company for any reasons other than "cause" (as defined below) and 
provided that you comply with the provisions of Section 10 hereof, you shall be 
entitled to continue to receive from the Company your Base Salary then in effect
for a period of nine (9) complete months following the effective date of such 
termination. For purposes of this letter agreement, "cause" shall mean 
termination of your employment due to (i) your continuance inattention to your 
duties after at least one (1) written notice of same has been given to you and
you have been given an opportunity to cure the same within thirty (30) days
after such notice, (ii) any breach by you of Section 10 of this letter agreement
or (iii) any act committed by you which constitutes gross recklessness, willful
or gross misconduct, fraud or criminal conduct.

          (b)  During any period in which you receive severance compensation 
pursuant to subsection (a) of this Section 9, you shall further be entitled to 
medical, life insurance, disability insurance and any other similar benefits to 
the same extent as theretofore provided by the Company to you prior to the 
effective date of termination of your employment.

     10.  Restrictive Covenants and Confidentiality.
          ------------------------------------------

          (a)  Non-Solicitation.  You agree that during the term of your 
               ----------------
employment and for a period of one (1) year following any termination thereof 
(for any reason), you shall not (either directly or indirectly) solicit, entice,
encourage or induce any person who at any time within one (1) year prior to your
termination of employment shall have been an employee of the Company or any of 
its subsidiaries, or who is a dentist who is employed by or performing 
professional services for any dental practice managed by the Company or one of 
its subsidiaries, to become employed by or associated with any person, firm or 
corporation other than the Company, and you shall not approach any such employee
or dentist for such purpose or encourage the taking of such actions by any other
person, firm or corporation or assist any such person, firm or corporation in 
taking such action.

<PAGE>
 
Mr. Norm Huffaker
November 7, 1996
Page 5 of 6

     (b)  Non-Compete.  You agree that during the term of your employment and 
          -----------
during any period in which you are receiving severance compensation pursuant to 
Section 9 hereof, you shall not, directly or indirectly, within a 50 mile radius
of any location where the Company or any of its subsidiaries owns, manages, 
develops, or operates any dental practice or its assets during your employment, 
engage or participate or make any financial investments in, or become employed 
by, or act as an agent or principal of, or render advisory or other services to 
or for, any person, firm or corporation that is engaged, directly or indirectly,
in any line of business then engaged in, or planned to be engaged in, by the 
Company (a "Competing Enterprise"). Nothing herein contained, however, shall 
restrict you from holding investments in not more than three percent (3%) of the
voting securities or any Competing Enterprise whose stock is listed on a 
national securities exchange or is actively traded on the National Association 
of Securities Dealers Automated Quotation System, so long as in connection with 
such investments you do not render services to a Competing Enterprise.

     11.  Survival.  The provisions of this letter agreement shall survive the 
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termination of your employment with the Company, irrespective of the reason 
therefor.

     12.  Remedies.  You acknowledge that the services to be rendered by you are
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of a special, unique and extraordinary character and, in connection with such 
services, you will have access to confidential information vital to the 
Company's and its subsidiaries' businesses. By reason of this access, you 
consent and agree that if you violate any of the provisions of this letter 
agreement, the Company and its subsidiaries shall be entitled, without the need 
to show actual damages, to an injunction and a temporary restraining order from 
any court of competent jurisdiction restraining you from committing or 
continuing any such violation of this agreement. You acknowledge that damages at
law would not be an adequate remedy for violation of this letter agreement, and 
you therefore agree that the provisions of this letter agreement may be 
specifically enforced against you in any court of competent jurisdiction. The 
rights, powers and remedies of the Company under this letter agreement are 
cumulative and not exclusive of any other right, power or remedy which the 
Company may have under any other agreement or by law.

     13.  Miscellaneous.
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          (a)  Successors and Assigns.  This letter agreement shall be binding  
               ----------------------
or and inure to the benefit of the parties hereto and their heirs, executors,
legal representatives, successors and assigns. Neither party shall have the
right to assign its obligations, or all or any portion of their rights or
interests under this letter agreement without the prior written consent of the
other party hereto, and any attempt to do so will be null and void.
<PAGE>
 
Mr. Norm Huffaker
November 7, 1996
Page 6 of 6


          (b)  Governing Law.  This letter agreement is made and entered into 
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and is to be governed by the internal laws of the State of California applicable
to agreements made and to be performed entirely within such State, without 
regard to the conflicts of laws principles of such State.

          (c)  Severability.  If any provision of this letter agreement shall be
               ------------
adjudicated to be invalid, ineffective or unenforceable, the remaining provision
of this letter agreement shall not be affected thereby. The invalid, ineffective
and unenforceable provision shall without further action by the parties, be 
automatically amended to effect the original purpose and intent of the invalid, 
ineffective or unenforceable provision; provided, however, that such amendment 
shall apply only with respect to the operation of such provision in the 
particular jurisdiction with respect to which such adjudication is made.

In order to acknowledge your acceptance of these terms, please sign one copy of 
this letter and return it to me.

Very truly yours,

GMS Dental Group, Inc.



By /s/ Grant M. Sadler
   ---------------------------------

Title   PRESIDENT
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I accept your offer of employment and I acknowledge the foregoing accurately 
sets forth the terms of my employment.

November ____________, 1996                     /s/ Norm Huffaker
                                          --------------------------------------
                                                    Norm Huffaker