DOI: 10.11607/ijp.4234, PubMed-ID: 26340008Seiten: 487-489, Sprache: EnglischMikeli, Aikaterini / Boening, Klaus W. / Lißke, BenjaminPurpose: Ceramic defects in porcelain-fused-to-metal (PFM) restorations may depend on framework alloy type. This study assessed ceramic defects on cobalt-chromium- (Co-Cr-) and gold-platinum- (Au-Pt-) based PFM restorations.
Materials and Methods: In this study, 147 Co-Cr-based and 168 Au-Pt-based PFM restorations inserted between 1998 and 2010 (139 patients) were examined for ceramic defects. Detected defects were assigned to three groups according to clinical defect relevance.
Results: Ceramic defect rates (Co-Cr-based: 12.9%; Au-Pt-based: 7.2%) revealed no significant difference but a strong statistical trend (U test, P = .082). Most defects were of little clinical relevance.
Conclusions: Co-Cr PFM restorations may be at higher risk for ceramic defects compared to Au-Pt-based restorations.