Method: Between 2005 and 2010, 12 Procera Alumina bridges were placed in 12 adult patients with good periodontal conditions. 7 supported by natural abutment and 5 by Zirconia abutment. Two restorations (a, 3-UB and a, 4-UB) were placed in the mandible and ten restorations (three, 4-UBs and seven, 3-UBs) were placed in the maxilla. The opposing dentition consisted of natural teeth or ceramic material. Panavia 21 TC (Kuraray) Unicem(3M/ESPE) and Multilink Automix (Ivoclar, Vivadent) were used for the cementation. The internal surfaces were air-abraded with 50 µm aluminum oxide particles or silica coated with the Rocatec system (3M/ESPE), and silanated (Ceramic Primer, 3M/ESPE) prior to cementation. All patients were evaluated 3, 6 and 12 months after the cementation. Additionally, patients were recalled in 2010 for a clinical assessment: color match, porcelain surface, marginal discoloration, and marginal integrity were clinically examined following modified CDA/Ryge criteria. The survival rate was calculated using Kaplan-Meier life table analysis, taking into account any complications that required a remake of the bridge.
Result: The survival rate was 100% at 1 year. The longest period of observation was 4 years and no complications were observed. During the observation period chipping occurred on 2 bridges after 6 months. These restorations were smoothed, finished and not considered failed.
Conclusion: Although limited by the number of patients treated and the short follow up these 1- year results encourage the use of Procera AllCeram bridges as a reliable solution for treatment of the anterior areas.