Überlebens- und Erfolgsrate von Keramik-Veneers nach 3 Jahren Tragezeit

Abstract

Aim: Retrospective evaluation of jaw position and type of resin cement on the survival and success rate of heat-pressed anterior ceramic veneers in a private practice after 36 months.Material and Method: 37 patients (21 female/16 male, age 20 73) were restored with adhesively luted ceramic veneers in the upper and lower jaw (13-23, 33-43). The teeth to be veneered were unfilled or had only minor composite restorations (maximum two surfaces). One dentist restored a total of 130 teeth (maxilla n=76, mandible n=54). Adhesive cementation was performed with an etch & rinse adhesive (Optibond FL, Kerr Hawe), and two different dual-curing composite cements (Variolink (n=59) Ivoclar VivaDent, Schaan/Liechtenstein, and Calibra (n=71) Dentsply DeTrey, Konstanz/Germany).Results: After 36 months, the survival rate (in-situ criteria) according to Kaplan-Meier was 97.3 %. Reasons for failure were four fractures of the veneering ceramics and one biological failure. 95% of the restorations were in service without any clinical intervention and rated as successful after 36 months. Interventions were necessary in five cases (three recementations, two endodontic treatments). No statistically significant differences in the survival and success rates of maxillary and mandibular veneers (p= 0.3) could be determined. Furthermore, the survival and success rates of the veneers was not influenced by the type of cement used for luting (p=0.2).Conclusion: After 36 months of clinical service, anterior veneer restorations made of a pressable ceramic showed a high survival rate and a low technical and biological complication rate. The clinical performance was independent from the jaw position and the luting agent.