Exhibit 99.1

        National Dentex Corporation Announces Acquisition of Green Dental
                               Laboratories, Inc.

    WAYLAND, Mass.--(BUSINESS WIRE)--March 2, 2005--National Dentex Corporation
(NASDAQ: NADX), one of the largest owner/operators of dental laboratories in the
United States, today announced the acquisition of Green Dental Laboratories,
Inc. ("Green") of Heber Springs, Arkansas effective March 1, 2005. Green, the
largest laboratory ever acquired by the Company, as well as the largest
laboratory now in our family of dental laboratories, had sales in excess of
$16,000,000 in its fiscal year ended December 31, 2004. This acquisition, along
with the acquisitions of D. H. Baker Dental Laboratory and Wornson - Polzin
Dental Laboratory within the last seven months, brings over $23,000,000 of
annualized sales to the Company, all of which the Company anticipates will be
immediately accretive to earnings. Terms of the transaction were not disclosed.
    David Brown, President & CEO, commented: "We are extremely pleased to
announce the acquisition of Green Dental Laboratories. Founded in 1980 by Josh
Green, the lab is widely recognized within the dental community as one of the
best managed, progressive and innovative laboratories in the country. Through
the work ethic, talents and dedication of its caring staff it has proven to be
highly qualified in providing outstanding restorations to dentists all over the
country. Green offers a full array of products including fixed prosthetics,
removable restorations and implant reconstructions, and supports each with a
team of highly trained technicians and on-staff dentists. While Mr. Green over
the last few years has continued to oversee and direct the laboratory, the day
to day operations have been and will continue to be led by Scott Thompson,
Laboratory President. Mr. Green will continue to consult with Green Dental
Laboratory, as well as the other forty laboratories that are part of National
Dentex. In addition to its product offerings, Green's Alliance Dental Institute
provides convenient and clinically relevant professional courses to its accounts
utilizing some of the nation's top clinicians. This service is conducted from
its state of the art learning center headed up by Richard Nordskog, Vice
President Doctor Relations.
    Mr. Brown further stated: "This acquisition adds one of the most respected
laboratories in the country to National Dentex's family of dental laboratories.
We welcome the entire Green team to National Dentex and look forward to working
with them in continuing their success and in benefiting from the sharing of
"best practices" throughout our network of laboratories."

    National Dentex Corporation serves an active customer base of over 22,000
dentists through dental laboratories located in 30 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