J Korean Acad Prosthodont.  2024 Oct;62(4):349-356. 10.4047/jkap.2024.62.4.349.

Mounting and utilization of provisional prostheses on master cast for the fabrication of fixed implant-supported prostheses: a case report

• Yu SJ
• Ryu JJ

• KMID: 2560764
• DOI: http://doi.org/10.4047/jkap.2024.62.4.349

Abstract

The restoration process for patients with collapsed occlusion or those requiring extensive rehabilitation often involves various trials and errors. Accurately transferring the patient’s oral information to the articulator is key to producing esthetically pleasing and stable prostheses. This necessitates precise master model fabrication and accurate jaw relation records. For patients undergoing extensive implant-supported fixed prostheses, several techniques for recording the jaw relationship are available, including the use of record bases with wax rims, bite blocks with temporary abutments and pattern resin, or provisional prostheses. Among these, using provisional prostheses directly for mounting on the master model can help minimize errors during the jaw relation recording phase. The patient in this case was a 55-year-old female patient, who presented for implant-supported fixed prosthetic rehabilitation. She exhibited multiple tooth loss due to periodontal disease, necessitating comprehensive mouth rehabilitation involving extractions and implant placements. After evaluating esthetics and occlusion with provisional prostheses, the same provisional prostheses were used for mounting on the master model, which enabled the fabrication of customized implant abutments and zirconia prostheses. The final result was a successful restoration, both esthetically and functionally.

Keyword

Implant-supported prosthesis; Mouth rehabilitation; Provisional prosthesis