Nonrigid semi-precision connectors for FPD

Abstract

In the practice of fixed prosthodontics, certain situations like pier abutments, tilted abutments pose problems with rigid connectors. If rigid connectors are used in this situation, the pier abutment will act as a fulcrum because of physiologic tooth movement, arch position of the abutment, and the retentive capacity of the retainers. A nonrigid connector may be preferred in fabrication of fixed partial denture (FPD) with pier abutment. In this prosthesis, the movement of the nonrigid connector is enough to prevent the pier abutment from serving as a fulcrum. This clinical report describes rehabilitation of a patient with FPD with pier abutment using semi-precision attachment. The technique used is simple, economical, and feasible in an ordinary laboratory set up.

Keywords

• Matrix patrix
• pier abutment
• semi-precision attachment
• tenon mortise