Processed acrylic resin provisional restoration with lingual cast metal framework.

Fixed provisional prostheses are fabricated to maintain, improve, and/or change oral function and esthetics for varying periods. It is important to know when to provide a provisional prostheses and how to make one so that it will meet the needs of the patient. This article describes a modification of the design of a cast metal reinforced processed acrylic resin provisional restoration for extensive, long-term reconstruction with implants, because some of the treatments rendered to patients require temporization for up to 2 years. This design has been used by the authors since 1991, and has resulted in fewer problems of fracture of the provisional restorations. In addition, removable partial dentures are rarely needed, even when large spans exist between remaining abutments in serial extractions. This procedure also permits performing guided bone regeneration for deficient ridges without the problem of transmucosal loading, while still maintaining the patient's esthetics and function after surgery.