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 6, 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.
                Jurisdiction of                           Employer
                Incorporation or                       Identification
                 Organization)                              No.)


                 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 2.02. Results of Operations and Financial Condition.

On May 9, 2005,  National Dentex  Corporation  issued a press release  (attached
hereto as Exhibit 99.1)  announcing  its revised  results of operations  for the
fourth  fiscal  quarter and full fiscal year for 2004. As explained in the press
release,  the figures included therein for net income for the fourth quarter and
full year amend and restate  results  previously  announced  in a press  release
issued by  National  Dentex on February  25, 2005 and  attached as an exhibit to
National  Dentex's  Current  Report on Form 8-K  filed  with the  Commission  on
February 25, 2005.

The  information  under Item 2.02 in this Form 8-K,  including  the  information
contained  in Exhibit 99.1 hereof that  concerns  National  Dentex's  results of
operations  for its  fourth  fiscal  quarter  and full year for  2004,  is being
furnished to the  Commission  and such  information  shall not be deemed "filed"
under Item 2.02 hereof or for purposes of Section 18 of the Securities  Exchange
Act of 1934,  as  amended,  or  otherwise  subject  to the  liabilities  of that
section,  nor shall such information be deemed  incorporated by reference in any
filing under the Securities Act of 1933, as amended.

Item 4.02.  Non-Reliance on Previously Issued Financial  Statements or a Related
            Audit Report or Completed Interim Review.

On May 6, 2005, the audit committee of the board of directors of National Dentex
concluded  that its  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
will require their restatement.

The brief  description of the facts underlying this  conclusion,  as required by
Item 4.02(a) of Form 8-K, is contained in National  Dentex's press release dated
May 9, 2005,  which is  attached  hereto as  Exhibit  99.1 and  incorporated  by
reference under Item 4.02 of this Current Report on Form 8-K.

As described in the press  release,  and as  previously  disclosed in its recent
filings with the Commission,  National Dentex has been unable to file its Annual
Report on Form 10-K for its fiscal year ended  December 31, 2004 by the extended
due date of March 31, 2005 as it is in the process of reviewing,  in conjunction
with its independent auditors  PricewaterhouseCoopers LLP ("PwC"), the valuation
and  accounting  for  intangible  assets  recorded in  connection  with  certain
acquisitions.  In connection with its completion of this review,  the closing of
its accounting records and preparing its Annual Report on Form 10-K,  management
and the audit committee have concluded that National Dentex needs to restate the
financial statements contained in its previously filed Quarterly Reports on Form
10-Q  for  each of the  first  three  fiscal  quarters  of 2004  to  adjust  the
accounting  for   intangible   assets   recorded  in  connection   with  certain
acquisitions.  During this process,  National  Dentex,  in consultation  with an
independent  third party valuation firm,  analyzed all the subject  acquisitions
and identified two intangible assets it had not previously recognized apart from
goodwill:  customer  relationships and trade names. The accounting treatment for
these  intangible  assets  requires  amortization  expense  over  the  estimated
economic  useful life for  customer  relationships  and  impairment  testing and
associated expense,  if any, for trade names. In addition,  National Dentex will
revise the classification of these intangible assets in the consolidated balance
sheets of the financial statements previously issued.

National Dentex has concluded that the adjustments  required by this restatement
are not material to any of its previously filed Quarterly  Reports on Form 10-Q.
However,  the  significance  of  the  cumulative   adjustment  of  approximately
$292,000, or $.06 per share on a diluted basis, precludes it from being recorded
in the fourth quarter of 2004, thereby  necessitating  amendments to its filings
on Form 10-Q made with respect to the first three  quarters of 2004. In light of
this conclusion,  National Dentex has determined (as more fully discussed below)
that this  accounting  adjustment  is not,  in itself,  a material  weakness  in
internal control over financial  reporting.  Management is currently  finalizing
its Report on Internal Control over Financial Reporting. This report is expected
to be included in National  Dentex's  Annual  Report on Form 10-K for the fiscal
year ended December 31, 2004 when ready for submission to the Commission.

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In determining  that this  accounting  adjustment is not, in itself,  a material
weakness  in  internal   control  over  financial   reporting   National  Dentex
considered, among other things, the control deficiency related to the accounting
for business combinations,  which resulted in the need to restate its previously
issued financial  statements for the first three fiscal quarters of fiscal 2004.
After reviewing and analyzing the Commission's Staff Accounting Bulletin ("SAB")
No. 99,  "Materiality,"  Accounting  Principles  Board Opinion No. 28,  "Interim
Financial  Reporting,"  paragraph 29 and SAB Topic 5 F, "Accounting  Changes Not
Retroactively  Applied Due to Immateriality,"  and taking into consideration (i)
that the restatement adjustments did not have a material impact on the financial
statements  of prior interim or annual  periods taken as a whole;  (ii) that the
cumulative impact of the restatement adjustments on stockholders' equity was not
material on the financial  statements of prior  interim or annual  periods;  and
(iii) that National  Dentex decided to restate its previously  issued  financial
statements solely because the cumulative impact of the error, if recorded in the
current period,  would have been material to the current quarter's  reported net
income,  management,  at this time,  concluded that the control  deficiency that
resulted in the  restatement  of the  financial  statements  for the first three
fiscal quarters of fiscal 2004, was not in itself a material weakness.

National Dentex intends to prepare amendments to each of the three affected Form
10-Q filings to restate the financial  statements  included  therein and to file
the amended  Quarterly  Reports with the  Commission  as promptly as  reasonably
possible.

Per the  requirements  of Item  4.02(a)(3) of Form 8-K,  National  Dentex hereby
states that its audit committee has discussed with National Dentex's independent
accountant the matters disclosed in this filing pursuant to Item 4.02(a).

Item 8.01 Other Events.

For the reasons  described under Items 2.02 and 4.02 hereof,  and explained more
fully in the press release attached hereto as Exhibit 99.1,  National Dentex has
further  determined that it will not be able to timely file its Quarterly Report
on Form 10-Q in respect of its first fiscal quarter of 2005 ended March 31, 2005
by the due date of May 10, 2005. National Dentex is not filing a Notification of
Inability  to Timely  File this  Quarterly  Report on Form 10-Q  insofar as Rule
12b-25(b)(2)(ii)  would require  National  Dentex to represent  that the subject
Quarterly Report on Form 10-Q will be filed no later than the fifth calendar day
following the prescribed due date.  National Dentex does not believe it can make
such a representation at this time.  National Dentex currently  believes that it
will be able to complete its  preparation of this Quarterly  Report on Form 10-Q
and file it with the  Commission  after it has amended its Quarterly  Reports on
Form 10-Q for the first three fiscal  quarters of 2004 and  completed  and filed
its Annual  Report on Form 10-K for fiscal 2004 and  currently  expects  that it
will be able to file the  respective  three  amendments  on Form 10-Q,  its Form
10-K,  and its Form 10-Q for the first  quarter of fiscal  2005  within the next
several weeks and in any event no later than the week of June 13, 2005.


Item 9.01 Financial Statements and Exhibits

     (c)  Exhibits

     99.1 Press release of National Dentex Corporation dated May 9, 2005.


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                                   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 12, 2005
         -------------                    By:  /s/  Richard F. Becker, Jr.
                                          ------------------------------------
                                                 Richard F. Becker, Jr.
                                               Vice President, Treasurer
                                               and Chief Financial Officer
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                                  Exhibit Index


     99.1      Press release of National Dentex Corporation dated May 9, 2005.



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