content: <PAGE>   1
  
  
  
                                                              File No. 333________
  
        As filed with the Securities and Exchange Commission on June 9, 2000
  ================================================================================
  
                         SECURITIES AND EXCHANGE COMMISSION
                               WASHINGTON, D.C. 20549
                               -----------------------
  
                                      FORM S-8
                               REGISTRATION STATEMENT
                                        Under
                             THE SECURITIES ACT OF 1933
                           ------------------------------
  
                             NATIONAL DENTEX CORPORATION
               (Exact name of registrant as specified in its charter)
  
              MASSACHUSETTS                               04-2762050
    (State or other jurisdiction of                    (I.R.S. Employer
     incorporation or organization)                   Identification No.)
  
                 526 BOSTON POST ROAD, WAYLAND, MASSACHUSETTS 01778
                      (Address of Principal Executive Offices)
  
                         1992 EMPLOYEES' STOCK PURCHASE PLAN
                              (Full title of the Plan)
  
                               RICHARD F. BECKER, JR.
                Vice President - Finance and Chief Financial Officer
                             National Dentex Corporation
                                526 Boston Post Road
                            Wayland, Massachusetts 01778
                      (Name and address of agent for services)
                                   (508) 358-4422
                       (Telephone number, including area code,
                                of agent for service)
                                      copy to:
  
                             MICHAEL L. ANDRESINO, ESQ.
                        Posternak, Blankstein & Lund, L.L.P.
                               100 Charles River Plaza
                                Boston, MA 02114-2723
                                   (617) 973-6100
                                --------------------
  
  
  
  
  
  <PAGE>   2
  
  
  ================================================================================
  
  
                           Calculation of Registration Fee
  
  <TABLE>
  <CAPTION>
  ----------------------------------------------------------------------------------------------------------
                                                 Proposed           Proposed
                                                 Maximum            Maximum
  Title of                                       Offering           Aggregate           Amount of
  Securities to            Amount to be          Price              Offering            Registration
  be Registered            Registered (1)        Per Share (2)      Price (2)           Fee
  -------------            --------------        -------------      ---------           ------------
  <S>                      <C>                     <C>               <C>                 <C>
  Common Stock
  $0.01 par value          100,000 shares          $13.75            $1,375,000          $275
  
  ----------------------------------------------------------------------------------------------------------
  </TABLE>
  
  (1)  Plus such additional number of shares as may be required pursuant to the
       1992 Employees' Stock Purchase Plan in the event of a stock dividend, stock
       split, split-up, recapitalization or other similar event.
  
  (2)  This estimate is made pursuant to Rule 457(c) and (h) under the Securities
       Act of 1933, as amended (the "Securities Act"), solely for purposes of
       determining the registration fee and is based upon 85% of the market value
       of outstanding shares of the Company's common stock on June 6, 2000,
       utilizing the average of the high and low sale prices reported on the
       NASDAQ National Market System for that date.
  
  ================================================================================
  
  
                                         2
  
  
  
  <PAGE>   3
  
  
                                       PART II
  
                 INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
  
  Item 3.   INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE.
  
  
       National Dentex Corporation (the "Company") hereby incorporates by
  reference the following documents which have previously been filed with the
  Securities and Exchange Commission:
  
       a)   The Company's Annual Report on Form 10-K for the fiscal year ended
            December 31, 1999;
  
       b)   The Company's Quarterly Report on Form 10-Q for the quarter ending
            March 31, 2000; and
  
       c)   The description of the Company's Common Stock, $0.01 par value,
            contained in the Company's registration statement on Form 8-A (File
            No. 000-23092) under the Securities Exchange Act of 1934, as amended
            (the "Exchange Act").
  
       In addition, all documents subsequently filed with the Securities and
  Exchange Commission by the Company pursuant to Sections 13(a) and 13(c),
  Section 14 and Section 15(d) of the Exchange Act prior to the filing of a
  post-effective amendment which indicates that all securities offered hereunder
  have been sold or which deregisters all securities then remaining unsold, shall
  be deemed to be incorporated by reference in this registration statement and to
  be a part hereof from the date of filing of such documents.
  
  Item 4.   DESCRIPTION OF SECURITIES.
  
       Not Applicable.
  
  Item 5.  INTERESTS OF NAMED EXPERTS AND COUNSEL.
  
       The validity of the shares to be offered hereby will be passed upon for the
  Company by Posternak, Blankstein & Lund, L.L.P., Boston, Massachusetts.
  
       The consolidated financial statements of the Company incorporated by
  reference herein from the Company's Annual Report on Form 10-K for the fiscal
  year ended December 31, 1999 have been incorporated by reference in reliance on
  the report of Arthur Andersen LLP, independent public accountants, given on the
  authority of such firm as experts in accounting and auditing in giving said
  reports.
  
                                         3
  
  
  
  
  <PAGE>   4
  
  
  Item 6.   INDEMNIFICATION OF DIRECTORS AND OFFICERS.
  
       Section 67 of the Massachusetts Business Corporation Law provides that a
  corporation may indemnify its directors, officers, employees or other agents.
  Section 13(b)(1-1/2) of the Massachusetts Business Corporation Law provides that
  the Articles of Organization may contain a provision eliminating or limiting the
  personal liability of directors to the corporation or its stockholders for
  monetary damages for breach of fiduciary duty as a director, provided that such
  provision shall not eliminate or limit the liability of a director (i) for any
  breach of the director's duty of loyalty to the corporation or its stockholders,
  (ii) for acts or omissions not in good faith or which involve intentional
  misconduct or a knowing violation of law, (iii) under Sections 61 or 62 of the
  Massachusetts Business Corporation Law, or (iv) for any transaction from which
  the director derived an improper personal benefit.
  
       Article Six of the Company's Articles of Organization, as amended,
  eliminates the personal liability of each member of the Company's Board of
  Directors to the Company or its stockholders for monetary damages for breach of
  fiduciary duty as a director. However, the liability of a director is not
  eliminated (i) for any breach of such director's duty of loyalty to the Company
  or its stockholders, (ii) for acts or omissions not in good faith or which
  involve intentional misconduct or a knowing violation of law, (iii) under
  Sections 61 or 62 of the Massachusetts Business Corporation Law, or any
  amendatory or successor provision thereto, or (iv) for any transaction from
  which such director derived an improper personal benefit. This provision is
  intended to afford directors additional protection, and limit their potential
  liability, from suits alleging a breach of duty of care by a director. The
  Company believes that this provision will assist it in maintaining and securing
  the services of directors who are not employees of the Company. As a result of
  the inclusion of such a provision, stockholders may be unable to recover
  monetary damages against directors for actions taken by them that constitute
  fiduciary duties, although it may be possible to obtain injunctive or other
  equitable relief with respect to such actions. If equitable remedies are found
  not to be available to stockholders for any particular case, stockholders may
  not have any effective remedy against the challenged conduct.
  
       The Company's By-Laws also provide that directors and officers shall be
  indemnified against liabilities arising from their service as directors or
  officers to the fullest extent permitted by Massachusetts law, which generally
  requires that the individual act in good faith and in a manner he reasonably
  believes to be in or not opposed to the Company's best interests.
  
       The Company has an insurance policy that insures the Company's directors
  and officers against certain liabilities which may be incurred in connection
  with the performance of their duties.
  
  Item 7.   EXEMPTION FROM REGISTRATION CLAIMED.
  
       Not applicable.
  
  
                                         4
  
  
  
  
  <PAGE>   5
  
  
  Item 8.   EXHIBITS.
  
       The following is a complete list of exhibits filed or incorporated by
  reference as part of this registration statement.
  
  EXHIBIT
  
   4.1      Amendment to National Dentex Corporation 1992 Employees' Stock
            Purchase Plan.*
  
   5.1      Opinion of Posternak, Blankstein & Lund, L.L.P. as to the legality of
            the securities being registered.
  
  23.1      Consent of Arthur Andersen LLP.
  
  23.2      Consent of Counsel, contained in its opinion filed as Exhibit 5.1.
  
  24.1      Power of Attorney, included on the signature pages hereto.
  
  *  Balance of Plan incorporated by reference to the Exhibits to the Company's
     Registration Statement on Form S-1 filed on December 20, 1993 (File No.
     33-70440).
  
  Item 9.   UNDERTAKINGS.
  
            a)   The undersigned registrant hereby undertakes:
  
                 (1) To file, during any period in which offers or sales are being
            made, a post-effective amendment to this registration statement:
  
                      (i) To include any prospectus required by Section 10(a)(3)
                 of the Securities Act;
  
                      (ii) To reflect in the prospectus any facts or events
                 arising after the effective date of the registration statement
                 (or the most recent post-effective amendment thereof) which,
                 individually or in the aggregate, represent a fundamental change
                 in the information set forth in the registration statement; and
  
                      (iii) To include any material information with respect to
                 the distribution not previously disclosed in the registration
                 statement or any material change to such information in the
                 registration statement;
  
                 PROVIDED, HOWEVER, that paragraphs (a)(l)(i) and (a)(1)(ii)
                 above do not apply if the information required to be included in
                 a post-effective amendment by those paragraphs is contained in
                 periodic reports filed with or furnish to the Commission by the
                 undersigned registrant pursuant to Section 13 or Section 15(d)
  
  
                                         5
  
  
  
  <PAGE>   6
  
  
                 of the Exchange Act that are incorporated by reference in the
                 registration statement;
  
                 (2) That, for the purpose of determining any liability under the
            Securities Act, each such post-effective amendment shall be deemed to
            be a new registration statement relating to the securities offered
            therein, and the offering of such securities at that time shall be
            deemed to be the initial bona fide offering thereof; and
  
                 (3) To remove from registration by means of a post-effective
            amendment any of the securities being registered which remain unsold
            at the termination of the offering.
  
            b)   The undersigned registrant hereby undertakes that, for purposes
  of determining any liability under the Securities Act, each filing of the
  registrant's annual report pursuant to Section 13(a) or 15(d) of the Exchange
  Act that is incorporated by reference in the registration statement shall be
  deemed to be a new registration statement relating to the securities offered
  therein, and the offering of such securities at that time shall be deemed to be
  the initial bona fide offering thereof.
  
            c)   Insofar as indemnification for liabilities arising under the
  Securities Act may be permitted to directors, officers and controlling persons
  of the registrant pursuant to the foregoing provisions, or otherwise, the
  registrant has been advised that in the opinion of the Securities and Exchange
  Commission such indemnification is against public policy as expressed in the
  Securities Act, and is, therefore, unenforceable. In the event that a claim for
  indemnification against such liabilities (other than the payment by the
  registrant of expenses incurred or paid by a director, officer or controlling
  person of the registrant in the successful defense of any action, suit or
  proceeding) is asserted by such director, officer or controlling person in
  connection with the securities being registered, the registrant will, unless in
  the opinion of its counsel the matter has been settled by controlling precedent,
  submit to a court of appropriate jurisdiction the question whether such
  indemnification by it is against public policy as expressed in the Securities
  Act and will be governed by the final adjudication of such issue.
  
  
                                         6
  
  
  
  <PAGE>   7
  
  
                                     SIGNATURES
  
       Pursuant to the requirements of the Securities Act of 1933, the registrant
  certifies that it has reasonable grounds to believe that it meets all of the
  requirements for filing on Form S-8 and has duly caused this registration
  statement to be signed on its behalf by the undersigned, thereunto duly
  authorized, in the Town of Wayland, Commonwealth of Massachusetts, on this 9th
  day of June, 2000.
  
                                          NATIONAL DENTEX CORPORATION
  
  
                                          By:  /s/ DAVID L. BROWN
                                             -------------------------------------
                                               David L. Brown, President
  
       Pursuant to the requirements of the Securities Act of 1933, this
  registration statement has been signed below by the following persons in the
  capacities and on the date indicated.
  
       Each person whose signature appears below constitutes and appoints David L.
  Brown, as his true and lawful attorney-in-fact and agent, with full power of
  substitution, for him and in his name, place and stead, in any and all
  capacities to sign any or all amendments or post-effective amendments to this
  registration statement, and to file the same, with all exhibits thereto and
  other documents in connection therewith, with the Securities and Exchange
  Commission, granting unto said attorney-in-fact and agent full power and
  authority to do and perform each and every act and thing requisite and necessary
  to be done in and about the premises, as fully to all intents and purposes as he
  might or could do in person, hereby ratifying and confirming all that said
  attorney-in-fact and agent or his substitute, may lawfully do or cause to be
  done by virtue hereof.
  
  
  
                                          By: /s/ DAVID V. HARKINS
                                             -------------------------------------
                                              David V. Harkins, Chairman of the
                                              Board and Director
                                              June 9, 2000
  
  
  
                                          By: /s/ JACK R. CROSBY
                                             -------------------------------------
                                              Jack R. Crosby, Director
                                              June 9, 2000
  
  
  
                                          By: /s/ WILLIAM H. MCCLURG
                                             -------------------------------------
                                              William H. McClurg, Director
                                              June 9, 2000
  
  
                                          7
  
  
  
  <PAGE>   8
                                        By: /s/ NORMAN F. STRATE
                                           ---------------------------------------
                                            Norman F. Strate, Director
                                            June 9, 2000
  
  
  
                                        By: /s/ DAVID L. BROWN
                                           ---------------------------------------
                                            David L. Brown, President, Treasurer,
                                            and Director (Principal Executive
                                            Officer)
                                            June 9, 2000
  
  
  
                                        By: /s/ RICHARD F. BECKER, JR.
                                           ---------------------------------------
                                            Richard F. Becker, Jr., Vice
                                            President, Finance, Chief Financial
                                            Officer and Assistant Treasurer
                                            (Principal Financial and Accounting
                                            Officer)
                                            June 9, 2000
  
  
  
                                         8
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metadata_filer: {"company-data": {"conformed-name": "NATIONAL DENTEX CORP /MA/", "cik": "0000913616", "assigned-sic": "8000", "irs-number": "042762050", "state-of-incorporation": "MA", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-38998", "film-number": "652711"}, "business-address": {"street1": "526 BOSTON POST ROAD", "city": "WAYLAND", "state": "MA", "zip": "01778", "phone": "5083584422"}, "mail-address": {"street1": "526 BOSTON POST ROAD", "city": "WAYLAND", "state": "MA", "zip": "01778"}}
text: 1
  
                                                              File No. 333________
  
        As filed with the Securities and Exchange Commission on June 9, 2000
  ================================================================================
  
                         SECURITIES AND EXCHANGE COMMISSION
                               WASHINGTON, D.C. 20549
                               -----------------------
  
                                      FORM S-8
                               REGISTRATION STATEMENT
                                        Under
                             THE SECURITIES ACT OF 1933
                           ------------------------------
  
                             NATIONAL DENTEX CORPORATION
               (Exact name of registrant as specified in its charter)
  
              MASSACHUSETTS                               04-2762050
    (State or other jurisdiction of                    (I.R.S. Employer
     incorporation or organization)                   Identification No.)
  
                 526 BOSTON POST ROAD, WAYLAND, MASSACHUSETTS 01778
                      (Address of Principal Executive Offices)
  
                         1992 EMPLOYEES' STOCK PURCHASE PLAN
                              (Full title of the Plan)
  
                               RICHARD F. BECKER, JR.
                Vice President - Finance and Chief Financial Officer
                             National Dentex Corporation
                                526 Boston Post Road
                            Wayland, Massachusetts 01778
                      (Name and address of agent for services)
                                   (508) 358-4422
                       (Telephone number, including area code,
                                of agent for service)
                                      copy to:
  
                             MICHAEL L. ANDRESINO, ESQ.
                        Posternak, Blankstein & Lund, L.L.P.
                               100 Charles River Plaza
                                Boston, MA 02114-2723
                                   (617) 973-6100
                                --------------------
  2
  
  ================================================================================
  
                           Calculation of Registration Fee
  ----------------------------------------------------------------------------------------------------------
                                                 Proposed           Proposed
                                                 Maximum            Maximum
  Title of                                       Offering           Aggregate           Amount of
  Securities to            Amount to be          Price              Offering            Registration
  be Registered            Registered (1)        Per Share (2)      Price (2)           Fee
  -------------            --------------        -------------      ---------           ------------
  Common Stock
  $0.01 par value          100,000 shares          $13.75            $1,375,000          $275
  
  ----------------------------------------------------------------------------------------------------------
  (1)  Plus such additional number of shares as may be required pursuant to the
       1992 Employees' Stock Purchase Plan in the event of a stock dividend, stock
       split, split-up, recapitalization or other similar event.
  
  (2)  This estimate is made pursuant to Rule 457(c) and (h) under the Securities
       Act of 1933, as amended (the "Securities Act"), solely for purposes of
       determining the registration fee and is based upon 85% of the market value
       of outstanding shares of the Company's common stock on June 6, 2000,
       utilizing the average of the high and low sale prices reported on the
       NASDAQ National Market System for that date.
  
  ================================================================================
  
                                         2
  3
  
                                       PART II
  
                 INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
  
  Item 3.   INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE.
  
       National Dentex Corporation (the "Company") hereby incorporates by
  reference the following documents which have previously been filed with the
  Securities and Exchange Commission:
  
       a)   The Company's Annual Report on Form 10-K for the fiscal year ended
            December 31, 1999;
  
       b)   The Company's Quarterly Report on Form 10-Q for the quarter ending
            March 31, 2000; and
  
       c)   The description of the Company's Common Stock, $0.01 par value,
            contained in the Company's registration statement on Form 8-A (File
            No. 000-23092) under the Securities Exchange Act of 1934, as amended
            (the "Exchange Act").
  
       In addition, all documents subsequently filed with the Securities and
  Exchange Commission by the Company pursuant to Sections 13(a) and 13(c),
  Section 14 and Section 15(d) of the Exchange Act prior to the filing of a
  post-effective amendment which indicates that all securities offered hereunder
  have been sold or which deregisters all securities then remaining unsold, shall
  be deemed to be incorporated by reference in this registration statement and to
  be a part hereof from the date of filing of such documents.
  
  Item 4.   DESCRIPTION OF SECURITIES.
  
       Not Applicable.
  
  Item 5.  INTERESTS OF NAMED EXPERTS AND COUNSEL.
  
       The validity of the shares to be offered hereby will be passed upon for the
  Company by Posternak, Blankstein & Lund, L.L.P., Boston, Massachusetts.
  
       The consolidated financial statements of the Company incorporated by
  reference herein from the Company's Annual Report on Form 10-K for the fiscal
  year ended December 31, 1999 have been incorporated by reference in reliance on
  the report of Arthur Andersen LLP, independent public accountants, given on the
  authority of such firm as experts in accounting and auditing in giving said
  reports.
  
                                         3
  4
  
  Item 6.   INDEMNIFICATION OF DIRECTORS AND OFFICERS.
  
       Section 67 of the Massachusetts Business Corporation Law provides that a
  corporation may indemnify its directors, officers, employees or other agents.
  Section 13(b)(1-1/2) of the Massachusetts Business Corporation Law provides that
  the Articles of Organization may contain a provision eliminating or limiting the
  personal liability of directors to the corporation or its stockholders for
  monetary damages for breach of fiduciary duty as a director, provided that such
  provision shall not eliminate or limit the liability of a director (i) for any
  breach of the director's duty of loyalty to the corporation or its stockholders,
  (ii) for acts or omissions not in good faith or which involve intentional
  misconduct or a knowing violation of law, (iii) under Sections 61 or 62 of the
  Massachusetts Business Corporation Law, or (iv) for any transaction from which
  the director derived an improper personal benefit.
  
       Article Six of the Company's Articles of Organization, as amended,
  eliminates the personal liability of each member of the Company's Board of
  Directors to the Company or its stockholders for monetary damages for breach of
  fiduciary duty as a director. However, the liability of a director is not
  eliminated (i) for any breach of such director's duty of loyalty to the Company
  or its stockholders, (ii) for acts or omissions not in good faith or which
  involve intentional misconduct or a knowing violation of law, (iii) under
  Sections 61 or 62 of the Massachusetts Business Corporation Law, or any
  amendatory or successor provision thereto, or (iv) for any transaction from
  which such director derived an improper personal benefit. This provision is
  intended to afford directors additional protection, and limit their potential
  liability, from suits alleging a breach of duty of care by a director. The
  Company believes that this provision will assist it in maintaining and securing
  the services of directors who are not employees of the Company. As a result of
  the inclusion of such a provision, stockholders may be unable to recover
  monetary damages against directors for actions taken by them that constitute
  fiduciary duties, although it may be possible to obtain injunctive or other
  equitable relief with respect to such actions. If equitable remedies are found
  not to be available to stockholders for any particular case, stockholders may
  not have any effective remedy against the challenged conduct.
  
       The Company's By-Laws also provide that directors and officers shall be
  indemnified against liabilities arising from their service as directors or
  officers to the fullest extent permitted by Massachusetts law, which generally
  requires that the individual act in good faith and in a manner he reasonably
  believes to be in or not opposed to the Company's best interests.
  
       The Company has an insurance policy that insures the Company's directors
  and officers against certain liabilities which may be incurred in connection
  with the performance of their duties.
  
  Item 7.   EXEMPTION FROM REGISTRATION CLAIMED.
  
       Not applicable.
  
                                         4
  5
  
  Item 8.   EXHIBITS.
  
       The following is a complete list of exhibits filed or incorporated by
  reference as part of this registration statement.
  
  EXHIBIT
  
   4.1      Amendment to National Dentex Corporation 1992 Employees' Stock
            Purchase Plan.*
  
   5.1      Opinion of Posternak, Blankstein & Lund, L.L.P. as to the legality of
            the securities being registered.
  
  23.1      Consent of Arthur Andersen LLP.
  
  23.2      Consent of Counsel, contained in its opinion filed as Exhibit 5.1.
  
  24.1      Power of Attorney, included on the signature pages hereto.
  
  *  Balance of Plan incorporated by reference to the Exhibits to the Company's
     Registration Statement on Form S-1 filed on December 20, 1993 (File No.
     33-70440).
  
  Item 9.   UNDERTAKINGS.
  
            a)   The undersigned registrant hereby undertakes:
  
                 (1) To file, during any period in which offers or sales are being
            made, a post-effective amendment to this registration statement:
  
                      (i) To include any prospectus required by Section 10(a)(3)
                 of the Securities Act;
  
                      (ii) To reflect in the prospectus any facts or events
                 arising after the effective date of the registration statement
                 (or the most recent post-effective amendment thereof) which,
                 individually or in the aggregate, represent a fundamental change
                 in the information set forth in the registration statement; and
  
                      (iii) To include any material information with respect to
                 the distribution not previously disclosed in the registration
                 statement or any material change to such information in the
                 registration statement;
  
                 PROVIDED, HOWEVER, that paragraphs (a)(l)(i) and (a)(1)(ii)
                 above do not apply if the information required to be included in
                 a post-effective amendment by those paragraphs is contained in
                 periodic reports filed with or furnish to the Commission by the
                 undersigned registrant pursuant to Section 13 or Section 15(d)
  
                                         5
  6
  
                 of the Exchange Act that are incorporated by reference in the
                 registration statement;
  
                 (2) That, for the purpose of determining any liability under the
            Securities Act, each such post-effective amendment shall be deemed to
            be a new registration statement relating to the securities offered
            therein, and the offering of such securities at that time shall be
            deemed to be the initial bona fide offering thereof; and
  
                 (3) To remove from registration by means of a post-effective
            amendment any of the securities being registered which remain unsold
            at the termination of the offering.
  
            b)   The undersigned registrant hereby undertakes that, for purposes
  of determining any liability under the Securities Act, each filing of the
  registrant's annual report pursuant to Section 13(a) or 15(d) of the Exchange
  Act that is incorporated by reference in the registration statement shall be
  deemed to be a new registration statement relating to the securities offered
  therein, and the offering of such securities at that time shall be deemed to be
  the initial bona fide offering thereof.
  
            c)   Insofar as indemnification for liabilities arising under the
  Securities Act may be permitted to directors, officers and controlling persons
  of the registrant pursuant to the foregoing provisions, or otherwise, the
  registrant has been advised that in the opinion of the Securities and Exchange
  Commission such indemnification is against public policy as expressed in the
  Securities Act, and is, therefore, unenforceable. In the event that a claim for
  indemnification against such liabilities (other than the payment by the
  registrant of expenses incurred or paid by a director, officer or controlling
  person of the registrant in the successful defense of any action, suit or
  proceeding) is asserted by such director, officer or controlling person in
  connection with the securities being registered, the registrant will, unless in
  the opinion of its counsel the matter has been settled by controlling precedent,
  submit to a court of appropriate jurisdiction the question whether such
  indemnification by it is against public policy as expressed in the Securities
  Act and will be governed by the final adjudication of such issue.
  
                                         6
  7
  
                                     SIGNATURES
  
       Pursuant to the requirements of the Securities Act of 1933, the registrant
  certifies that it has reasonable grounds to believe that it meets all of the
  requirements for filing on Form S-8 and has duly caused this registration
  statement to be signed on its behalf by the undersigned, thereunto duly
  authorized, in the Town of Wayland, Commonwealth of Massachusetts, on this 9th
  day of June, 2000.
  
                                          NATIONAL DENTEX CORPORATION
  
                                          By:  /s/ DAVID L. BROWN
                                             -------------------------------------
                                               David L. Brown, President
  
       Pursuant to the requirements of the Securities Act of 1933, this
  registration statement has been signed below by the following persons in the
  capacities and on the date indicated.
  
       Each person whose signature appears below constitutes and appoints David L.
  Brown, as his true and lawful attorney-in-fact and agent, with full power of
  substitution, for him and in his name, place and stead, in any and all
  capacities to sign any or all amendments or post-effective amendments to this
  registration statement, and to file the same, with all exhibits thereto and
  other documents in connection therewith, with the Securities and Exchange
  Commission, granting unto said attorney-in-fact and agent full power and
  authority to do and perform each and every act and thing requisite and necessary
  to be done in and about the premises, as fully to all intents and purposes as he
  might or could do in person, hereby ratifying and confirming all that said
  attorney-in-fact and agent or his substitute, may lawfully do or cause to be
  done by virtue hereof.
  
                                          By: /s/ DAVID V. HARKINS
                                             -------------------------------------
                                              David V. Harkins, Chairman of the
                                              Board and Director
                                              June 9, 2000
  
                                          By: /s/ JACK R. CROSBY
                                             -------------------------------------
                                              Jack R. Crosby, Director
                                              June 9, 2000
  
                                          By: /s/ WILLIAM H. MCCLURG
                                             -------------------------------------
                                              William H. McClurg, Director
                                              June 9, 2000
  
                                          7
  8
                                        By: /s/ NORMAN F. STRATE
                                           ---------------------------------------
                                            Norman F. Strate, Director
                                            June 9, 2000
  
                                        By: /s/ DAVID L. BROWN
                                           ---------------------------------------
                                            David L. Brown, President, Treasurer,
                                            and Director (Principal Executive
                                            Officer)
                                            June 9, 2000
  
                                        By: /s/ RICHARD F. BECKER, JR.
                                           ---------------------------------------
                                            Richard F. Becker, Jr., Vice
                                            President, Finance, Chief Financial
                                            Officer and Assistant Treasurer
                                            (Principal Financial and Accounting
                                            Officer)
                                            June 9, 2000
  
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