Exhibit 99.1

NATIONAL DENTEX CORPORATION                               FOR IMMEDIATE RELEASE:
526 Boston Post Road                                      October 6, 2006
Wayland, MA 01778
(508) 358 - 4422
Contact:
     Richard F. Becker, Executive Vice President, Treasurer & CFO

                      NATIONAL DENTEX CORPORATION ANNOUNCES
                    ACQUISITION OF KELLER GROUP, INCORPORATED

NATIONAL DENTEX CORPORATION, WAYLAND, MASSACHUSETTS, October 6, 2006 - National
Dentex Corporation (NASDAQ: NADX), one of the largest owner/operators of dental
laboratories in North America, today announced that it had acquired Keller
Group, Incorporated ("Keller"), a privately-held dental laboratory business with
production facilities in both St. Louis, Missouri and Louisville, Kentucky, and
sales offices in Kansas City, Missouri and Indianapolis, Indiana. Keller had
sales in excess of $17,000,000 in its last fiscal year ended December 31, 2005.
The transaction was effected on October 5, 2006 in the form of a stock purchase
agreement pursuant to which National Dentex purchased all the outstanding shares
of capital stock of Keller for total cash consideration at closing of
$19,125,000, and an additional deferred payment to be determined and payable in
accordance with the agreement's terms.

David Brown, President & CEO, commented: "We are extremely pleased to announce
our acquisition of Keller. Founded in 1948 by George Keller and today led by his
sons, Bill and Tom, we believe Keller is widely recognized within the dental
community as one of the best managed, progressive and innovative laboratory
businesses in the country. Keller has been able to achieve the success that it
is known for and to standout nationally among dental laboratories through a
combination of its various team members' talents, energy and commitment. The
Keller team's clear strategies and technical competencies have enabled Keller to
develop product leadership in a number of areas on a national level. These
strategies have helped focus Keller on growth opportunities that fit well with
its production capacities, thereby enabling them to deliver consistent and
sustainable growth. Keller's success has in turn built trust and strong
relationships with its clients, helping ensure future competitive advantages."

Mr. Brown continued: "This acquisition adds one of the most respected laboratory
businesses in the country to National Dentex. We welcome Bill and Tom Keller and
their entire Keller team to the National Dentex family of laboratories. Their
managerial and technical strengths helps to further enhance our position as a
leading operator of high quality dental laboratories in North America."

ABOUT NATIONAL DENTEX

     National Dentex Corporation serves an active customer base of over 24,000
dentists through 48 dental laboratories located in 31 U.S. states and one
Canadian province. 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.

SAFE HARBOR STATEMENT

     This press release contains forward-looking statements within the meaning
of the federal securities laws, including statements regarding our acquisition
activity, marketplace competitiveness, opportunities, and expected courses of
action, that are based on our current expectations, beliefs, assumptions,
estimates, forecasts and projections about the industry and markets in which
National Dentex operates. The statements contained in this release are not
guarantees of future performance and involve certain risks,



uncertainties and assumptions that are difficult to predict. Therefore, actual
outcomes and results may differ materially from what is expressed in such
forward-looking statements. Important factors that may affect future operating
results and acquisition activity include the timing, duration and effects of
adverse changes in overall economic conditions and other developments that
directly or indirectly affect consumer decisions as to whether and when to have
dental procedures performed; National Dentex's ability to acquire new
laboratories on terms and conditions acceptable to it and its capacity to
integrate and successfully operate previously acquired laboratories;
governmental regulation of health care; trends in the dental industry towards
managed care; increases in labor, benefits and material costs; product
development risks; technological innovations; competition from other dental
laboratories, including increased competition from dental laboratories located
in foreign countries with lower labor and benefit costs, such as China: National
Dentex's ability to attract, retain and motivate qualified personnel; changes in
the cost or availability of raw materials, particularly precious metals like
gold, platinum and palladium; any impairment in the carrying value of goodwill
or other acquired intangibles; compliance with evolving federal securities,
accounting, and marketplace rules and regulations applicable to publicly-traded
companies on the Nasdaq National Market; and other risks indicated from time to
time in National Dentex's filings with the Securities and Exchange Commission,
particularly under Item 1A, "Risk Factors" of National Dentex's most recently
filed Annual Report on Form 10-K and the most recently filed Quarterly Report on
Form 10-Q.