Quantcast

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

Research paper by Céleste C M CC van Heumen, Johanna J Tanner, Jan W V JW van Dijken, Ronald R Pikaar, Lippo V J LV Lassila, Nico H J NH Creugers, Pekka K PK Vallittu, Cees M CM Kreulen

Indexed on: 20 Jul '10Published on: 20 Jul '10Published in: Dental Materials



Abstract

The purpose of this clinical study was to evaluate the long-term outcome of three-unit posterior fixed partial dentures (FPDs) made of fiber-reinforced resin composite (FRC), and to identify design factors influencing the survival rate.77 patients (52 females, 25 males) received 96 indirectly made FRC FPDs, using pre-impregnated unidirectional glass-fibers, requiring manual wetting, as framework material. FPDs were surface (n=31) inlay (n=45) or hybrid (n=20) retained and mainly located in the upper jaw. Hybrid FPDs consisted of a wing retainer at canine and an inlay retainer at distal abutment tooth. Surface FPDs consisted of uplay and wing combinations. Follow-up period was at minimum 4.5 years, with checkups at every 1-2 years. The study was carried out by six operators in three centers in the Netherlands, Finland and Sweden. Survival rates, including reparable defects of FPDs, and success rates were determined.Kaplan-Meier survival rate at 5 years was 71.2% (SE 4.8%) for success and 77.5% (SE 4.4%) for survival. Differences were not significantly different. Main failure modes were delamination and fracture of the FPD. Only FPDs with surface retainers showed debonding.A success rate of 71% and a survival rate of 78% after 5 years was found. Survival rates of inlay, hybrid and surface retained FPDs did not significantly differ.