ISSN:
1365-2842
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Medicine
Notes:
In a randomized clinical study 47 titanium and gold-alloy fixed partial dentures (FPDs) were placed during a 1-year period. In the titanium group (n=22) all metal substructures were made of unalloyed titanium. The titanium substructures were fabricated by copy milling, spark erosion and laser welding (Procera®, Nobelpharma). Ceramic veneering was carried out with Duceratin® titanium ceramics (Ducera, Germany). In the control group (n=25) the high-gold alloy Degudent U® (Degussa, Germany) and Vita VMK 68® ceramics (Vita, Germany) were used. The longest observation time was 6 years. Only one FPD had to be removed due to metal–ceramic failure (titanium group). The clinical performance of all 125 porcelain-fused-to-metal (PFM) veneers with respect to the longevity of the metal–ceramic compound was described by Kaplan–Meyer survivor analyses. Relating survival to a completely intact ceramic veneer, the 5-year survivor rate was 84% for titanium and 98% for the high-gold alloy. PFM titanium restorations exhibited a significantly increased risk of metal–ceramic failure. However, concerning defects requiring removal, no significant differences in titanium versus high-gold alloy occurred. There were no significant differences in the survival distributions between crowns and pontics within the two groups.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1046/j.1365-2842.1999.00373.x
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