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Volume 25 , Issue 6
November/December 2012

Pages 585589

Zirconia Posterior Fixed Partial Dentures: 5-Year Clinical Results of a Prospective Clinical Trial

Johannes Schmitt, DMD/Matthias Goellner, DMD/Ulrich Lohbauer, PhD/Manfred Wichmann, PhD, DMD/Sven Reich, DMD

PMID: 23101038

This study aimed to evaluate three- and four-unit posterior fixed partial dentures (FPDs) with zirconia frameworks after 5 years of function. Of the initial 30 subjects, 25 patients with 25 FPDs were examined after a mean follow-up period of 62.1 months. Five patients were not available for recall visits. Two FPDs failed before the 60-month evaluation because of framework fracture or delamination of the veneering ceramic after endodontic treatment. The 5-year survival rate was 92%. Based on these results, it can be suggested that zirconia frameworks have sufficient mechanical requirements for use in the stress-bearing posterior region. Major fracture of the ceramic veneer could be related to inadequate framework design or bruxism. Int J Prosthodont 2012;25:585589.

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