Fabrication of an alloplastic implant for the cranial defect.

This article describes the presurgical fabrication of an inlay/onlay alloplastic cranial implant prosthesis. The technique eliminates the need to modify an artificial stone master cast, thus simplifying the technique and decreasing the laboratory time involved. The final prosthesis replaces lost cranial contours and has a positive seat on the unaltered cranium adjacent to the defect.