Cross-pin fixation for fixed partial dentures

A technique is described in which a standardized post system is used as a cross pin. The pin is partially embedded in the mesial or distal aspect of the abutment tooth and the remainder of the pin diameter is incorporated in the metallic substructure of the fixed partial denture. The cemented pin will add retention and resistance to the fixed partial denture. The differences between threaded and smooth cross pins are discussed.