Exhibit 99.1




                    CHIEF EXECUTIVE CERTIFICATION PURSUANT TO

                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

                  In connection with the Annual Report of National Dentex
Corporation (the "Company") on Form 10-K for the year ending December 31, 2002
as filed with the Securities and Exchange Commission on the date hereof (the
"Report"), I, David L. Brown, President, Chief Executive Officer, and Director
of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant
to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

      (1) The Report fully complies with the requirements of section 13(a) or
15(d) of the Securities Exchange Act of 1934; and

      (2) The information contained in the Report fairly presents, in all
material respects, the financial condition and result of operations of the
Company.

By:/s/ David L. Brown
   ---------------------
David L. Brown
President, Chief Executive Officer and Director
March 10, 2003