EXHIBIT 23

            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

      We hereby consent to the incorporation by reference in the Registration
Statements on Form S-8 (No. 333-28623, 333-50341, 333-38998, 333-66446, and
333-116541) of National Dentex Corporation of our report dated March 16, 2006
relating to the financial statements, management's assessment of the
effectiveness of internal control over financial reporting and the effectiveness
of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP
Boston, Massachusetts
March 16, 2006