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  • Title: Metal-ceramic failure in noble metal crowns: 7-year results of a prospective clinical trial in private practices.
    Author: Reitemeier B, Hänsel K, Kastner C, Walter MH.
    Journal: Int J Prosthodont; 2006; 19(4):397-9. PubMed ID: 16900825.
    Abstract:
    PURPOSE: The aim of this study was to evaluate the clinical performance of metal-ceramic crowns placed in 10 private practices. MATERIALS AND METHODS: In this prospective clinical trial, 95 patients were provided with 190 noble-metal metal-ceramic single crowns. RESULTS: The 7-year survival rates of the crowns were 95.5% (target event: any removal), 99.5% (target event: removal because of defective veneer), and 92.4% (target event: metal-ceramic complication of any kind). No significant explanatory variables for metal-ceramic complications could be detected by bivariate and multivariate testing. The consequences resulting from metal-ceramic defects were of minor clinical significance in most cases. CONCLUSION: The findings support previous claims that metal-ceramic restorations perform very well clinically, including in practices outside academic environments.
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