Exhibit 32.1

Certification Pursuant to 18 U.S.C. Section 1350

As Adopted 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, 2004 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

May 24, 2005