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  • Title: Prospective clinical 5-year study of ceramic-veneered titanium restorations with the Procera system.
    Author: Lövgren R, Andersson B, Carlsson GE, Odman P.
    Journal: J Prosthet Dent; 2000 Nov; 84(5):514-21. PubMed ID: 11105007.
    Abstract:
    STATEMENT OF PROBLEM: The biocompatibility of titanium has been well documented, but clinical outcomes of ceramic-veneered titanium restorations were not conclusive. PURPOSE: The study presents the results of a 5-year clinical study of individual crowns and fixed partial dentures (FPDs) veneered with a low-fusing ceramic of the Procera system. MATERIAL AND METHODS: All patients at one clinic who required crowns or FPDs during a 2-year period were invited to participate. A total of 260 patients received 333 ceramic-veneered Procera restorations (242 single crowns and 91 FPDs). Clinical registrations were performed annually, and the restorations were evaluated according to the California Dental Association rating system. At the 5-year follow-up, 198 (76%) patients were examined. Most of the loss of patients could be explained. RESULTS: Practically all Procera restorations were judged as satisfactory both at baseline and follow-up examinations. One artificial crown and 1 FPD were remade because of extensive fractures of ceramic veneers. Two FPDs had fractures of a soldered joint, but only 1 FPD was replaced. Some minor complications occurred, such as small porcelain fractures that could be polished (6% of single crowns, 13% of FPDs) and or loosened restorations that were recemented. Other recorded complications were not related to the Procera system but to dental caries, loosened posts and cores, and root fractures. CONCLUSION: Clinical outcomes over a 5-year period for ceramic-veneered titanium restorations with the Procera system were favorable.
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