Five-year survival of 3-unit fiber-reinforced composite fixed partial dentures in the anterior area

Autor: Heumen, C.C.M. van, Dijken, J.W.V. van, Tanner, J., Pikaar, R., Lassila, L.V., Creugers, N.H.J., Vallittu, P.K., Kreulen, C.M.
Rok vydání: 2009
Předmět:
Zdroj: Dental Materials, 25, 6, pp. 820-7
Dental Materials, 25, 820-7
ISSN: 0109-5641
Popis: Contains fulltext : 80693.pdf (Publisher’s version ) (Closed access) OBJECTIVES: The purpose of this clinical study was to evaluate the long-term outcome of 3-unit anterior fixed partial dentures (FPDs) made of fiber-reinforced resin composite (FRC), and to identify design factors influencing the survival rate. METHODS: 52 patients (26 females, 26 males) received 60 indirectly made FRC FPDs, using pre-impregnated unidirectional glass fibers, requiring manual wetting, as framework material. FPDs were surface (n=48) or hybrid (n=12) retained and mainly located in the upper jaw. Hybrid FPDs had a combination of retainers; i.e. crown at one and surface retention at the other abutment tooth. Surface FPDs were either purely adhesively retained (n=29) or with additional mechanical retention (n=19). Follow-up period was at minimum 5 years, with check-ups every 1-2 years. Six operators were involved, in three centers in the Netherlands, Finland and Sweden. Survival rates, including repairable defects of FPDs, and success rates were determined. RESULTS: Kaplan-Meier survival rate at 5 years was 64% (SE 7%). For the level of success, values were 45% (SE 7%) and the estimated median survival time 58 (SE 10.1) months. For surface FPDs, additional mechanical retention did not improve survival significantly. There was a trend towards better survival of surface FPDs over hybrid FPDs, but differences were not significant. Main failure modes were fracture of the FPD and delamination of veneering composite. SIGNIFICANCE: A success rate of 45% and a survival rate of 64% after 5 years was found. Fracture of the framework and delamination are the most prevalent failure modes, especially for surface FPDs.
Databáze: OpenAIRE
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