UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549


                                    FORM 8-K

                                 CURRENT REPORT
                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934

                                  May 18, 2005
                Date of Report (date of earliest event reported)


                           NATIONAL DENTEX CORPORATION
             (Exact name of registrant as specified in its charter)

                        Commission file number 000-23092


                    MASSACHUSETTS                          04-2762050
                  (State or Other                       (I.R.S. Employer
                  Jurisdiction of                        Identification No.)
                  Incorporation or
                   Organization)


                  526 Boston Post                            01778
                Road, Wayland, MA
              (Address of Principal                       (Zip Code)
                Executive Offices)

                                 (508) 358-4422
                (Registrant's Telephone No., including Area Code)



Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

|_|  Written  communications  pursuant to Rule 425 under the  Securities Act (17
     CFR 230.425)

|_|  Soliciting  material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
     240.14a-12)

|_|  Pre-commencement   communications  pursuant  to  Rule  14d-2(b)  under  the
     Exchange Act (17 CFR 240.14d-2(b))

|_|  Pre-commencement   communications  pursuant  to  Rule  13e-4(c)  under  the
     Exchange Act (17 CFR 240.13e-4(c))





Item 3.01. Notice of Delisting or Failure to Satisfy a Continued Listing Rule or
Standard; Transfer of Listing.

As previously  reported on National  Dentex's  Current  Report on Form 8-K filed
with the SEC on April 11, 2005,  National Dentex was notified by Nasdaq on April
5, 2005 that its  securities  are subject to  delisting  owing to its failure to
timely file its Annual Report on Form 10-K for the year ended  December 31, 2004
by the  extended due date of March 31, 2005.  National  Dentex has  responded to
Nasdaq and attended a Nasdaq delisting panel hearing on May 5, 2005 with respect
to this matter.

By way of  background,  National  Dentex notes that it issued a press release on
March 31,  2005 and filed a Current  Report on Form 8-K with the SEC on April 1,
2005  that set forth the  reasons  that it has not been able to timely  file its
Annual  Report on Form 10-K for the fiscal year ended  December  31, 2004 by the
extended due date of March 31, 2005.

National  Dentex is filing this Current Report on Form 8-K pursuant to Item 3.01
to report that on May 18, 2005 it had received an additional  delinquency notice
from Nasdaq because of its inability to timely file its Quarterly Report on Form
10-Q for the  quarter  ended  March  31,  2005 by the due date of May 10,  2005.
National  Dentex and the Nasdaq  hearing  panel had discussed  this  anticipated
additional  delinquency  notice  at the May 5  panel  hearing  discussed  above.
Nasdaq's  additional  delinquency  notice  indicated that it would consider this
additional delinquency within the context of the first delinquency  notification
and the proceedings initiated thereby.

On May 24, 2005,  National  Dentex filed its Annual  Report on Form 10-K for the
year ended December 31, 2004 with the SEC and believes that it has thus regained
compliance with Nasdaq's  continued  listing standards with respect to the first
delinquency notice it received from Nasdaq on April 5, 2005.

National  Dentex  is  currently  preparing  to file as  promptly  as  reasonably
practicable its Quarterly Report on Form 10-Q in respect of its first quarter of
2005, which it currently expects to file within approximately the next week, and
anticipates, but cannot provide any assurance at this time, that when it does so
that it will have regained compliance with Nasdaq's continued listing standards.
In the meantime,  and pending any further notification from or action by Nasdaq,
the fifth  character "E" will continue to be appended to its trading  symbol and
its trading symbol will continue to be "NADXE".

On May 24,  2005,  National  Dentex  issued a press  release with respect to the
above-mentioned  matters and certain related matters  discussed below under Item
8.01.  The press  release is attached  hereto as Exhibit  99.1 and  incorporated
herein by reference.


Item 8.01 Other Events.

As previously  reported on National  Dentex's  Current  Report on Form 8-K filed
with the SEC on May 12, 2005,  the audit  committee of the board of directors of
National Dentex  concluded that the previously  issued  financial  statements in
respect of the first three fiscal  quarters of fiscal 2004,  as included  within
Quarterly  Reports  on Form 10-Q filed  with the  Commission  on each of May 10,
2004,  August 9, 2004 (as previously  amended on August 17, 2004),  and November
11, 2004,  should no longer be relied upon because of an error in such financial
statements which required their restatement.

Further to that  announcement,  National Dentex is filing this Current Report on
Form 8-K  pursuant  to Item  8.01 to  report  that on May 24,  2005 it had filed
amended  Quarterly  Reports on Form 10-Q/A in respect of each of the first three
fiscal quarters of 2004 which contain the  restatements and that National Dentex
had also filed its Annual  Report on Form 10-K for the year ended  December  31,
2004.

On May 24,  2005,  National  Dentex  issued a press  release with respect to the
above-mentioned  matters and certain related matters  discussed above under Item
3.01.  The press  release is attached  hereto as Exhibit  99.1 and  incorporated
herein by reference.


                                       2





Item 9.01 Financial Statements and Exhibits

          (c)  Exhibits

99.1 Press release of National Dentex Corporation dated May 24, 2005.


                                       3





                                   SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned, thereunto duly authorized.

                                       NATIONAL DENTEX CORPORATION
                                       (Registrant)




May 24, 2005
                                       By: /s/  Richard F. Becker, Jr.
                                          ---------------------------------
                                       Richard F. Becker,
                                       Jr. Vice President,
                                       Treasurer and Chief Financial Officer


                                       4





                                  Exhibit Index


99.1 Press release of National Dentex Corporation dated May 24, 2005.



                                       5