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Volume 6 , Issue 4
Winter 1991

Pages 475-480

Cobalt-Chromium as a Framework Material in Implant-Supported Fixed Prostheses: A Preliminary Report

Matti Hulterström, DDS/Ulf Nilsson, DDS

PMID: 1687920

Sixty-six consecutive patients treated at the Prosthodontic Clinic in Uppsala, Sweden, received implant-supported fixed prostheses of the Brånemark type. The prosthesis frameworks were made of cobalt-chromium alloys. Different techniques for attaching the gold cylinders to the frameworks were used. Mechanical attachment with self-curing polymethyl methacrylate (PMMA), partial soldering combined with PMMA attachment, and soldering only were used. No abnormal tissue reactions were seen. Radiographic examination of the fixtures was performed at the time of prosthesis placement and at the 1- and 3-year follow-ups. A few cases of minor bone loss were detected but not related to the materials used in the superstructures. (INT J ORAL MAXILLOFAC IMPLANTS 1991;6:475-480.)

Key words: alloys, Brånemark implants, design, framework, osseointegration, prosthodontics, soldering

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