Precision Attachment Definition — NDEB AFK MCQ
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Correct answer: E — A prefabricated, interlocking mechanical device with a male (patrix) component on the removable prosthesis and a female (matrix) component on the abutment crown, providing retention without visible clasps
A precision attachment (semi-precision or precision) is a prefabricated interlocking device consisting of a male (patrix) component attached to the RPD framework and a female (matrix) component incorporated into a surveyed crown on the abutment tooth. The male slides into the female, providing retention through friction fit or mechanical engagement. Advantages include improved aesthetics (no visible clasps), predictable retention (can be adjusted or replaced), and stress distribution. Disadvantages include higher cost, more complex fabrication, and need for crowning the abutment.
Reference: Carr – McCracken's Removable Partial Prosthodontics, 13th ed., 2015