Exhibit 99.1

National Dentex Corporation Announces Acquisition of Wornson - Polzin Dental
Laboratory

    WAYLAND, Mass.--(BUSINESS WIRE)--Feb. 8, 2005--National Dentex
Corporation (NASDAQ: NADX), one of the largest owner/operators of
dental laboratories in the United States, today announced the
acquisition of Wornson - Polzin Dental Laboratory of Mankato,
Minnesota effective February 1, 2005. Wornson - Polzin had sales in
excess of $3,000,000 in its last fiscal year ended July 31, 2004.
Terms of the transaction were not disclosed.
    Mr. David Brown, President & CEO, commented: "We are delighted to
welcome into the National Dentex family of labs, Wornson - Polzin
Dental Laboratory. From its Mankato location, approximately eighty
miles southwest of Minneapolis, Wornson - Polzin has built a solid
reputation by providing quality products and services to its accounts
throughout central and southern Minnesota. Founded over sixty-five
years ago, Wornson - Polzin today is led by Fred Polzin and Bob
Menzel, both who have been with the laboratory since 1975. Fred and
Bob, together with their talented staff have carried on and built upon
the rich tradition of excellence of both the Wornson and Polzin
families. This reputation, along with their commitment and focus on
customer service, fits well with National Dentex's operational
approach of establishing lasting professional relationships with its
accounts. We look forward to supporting and helping the Wornson -
Polzin team continue their success.
    Mr. Brown further stated: "We continue to have discussions with a
number of potential acquisition candidates. We remain firmly committed
to our acquisition program and its potential to create value for
shareholders."
    National Dentex Corporation serves an active customer base of over
20,000 dentists through dental laboratories located in 29 states.
National Dentex's dental laboratories provide a full range of
custom-made dental prosthetic appliances, including dentures, crowns
and fixed bridges, and other dental specialties.

    This press release contains forward-looking statements within the
meaning of the federal securities laws. The Company's actual results
could be materially different as a result of a number of factors,
including general economic conditions, the Company's ability to
acquire and successfully operate additional laboratories, and other
risks indicated from time to time in the Company's filings with the
Securities and Exchange Commission.

    CONTACT: National Dentex Corporation
             Richard F. Becker, 508-358-4422