Five-year survival of 3-unit fiber-reinforced composite fixed partial dentures in the anterior area
2009 (English)In: Dental Materials, ISSN 0109-5641, E-ISSN 1879-0097, Vol. 25, no 6, 820-827 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
Copenhagen: Munksgaard , 2009. Vol. 25, no 6, 820-827 p.
fiber-reinforced composite, cinical study, fixed partial denture, framework design
IdentifiersURN: urn:nbn:se:umu:diva-21683DOI: 10.1016/j.dental.2009.01.103PubMedID: 19339043OAI: oai:DiVA.org:umu-21683DiVA: diva2:211496