Load-bearing capacity of fiber reinforced fixed composite bridges



: Basaran EG, Ayna E, Li SU, Vallittu PK, Lassila LVJ

Publisher: INFORMA HEALTHCARE

: 2013

: Acta Odontologica Scandinavica

: ACTA ODONTOLOGICA SCANDINAVICA

: ACTA ODONTOL SCAND

: 1

: 71

: 1

: 65

: 71

: 7

: 0001-6357

DOI: https://doi.org/10.3109/00016357.2011.654240


Objective. The aim of this study was to evaluate the reinforcing effect of differently oriented fibers on the load-bearing capacity of three-unit fixed dental prostheses (FDPs). Materials and methods. Forty-eight composite FDPs were fabricated. Specimens were divided into eight groups (n = 6/group; codes 1-8). Groups 1 and 5 were plain restorative composites (Grandio and Z100) without fiber reinforcement, groups 2 and 6 were reinforced with a continuous unidirectional fiber substructure, groups 3 and 7 were reinforced with a continuous bidirectional fiber and groups 4 and 8 were reinforced with a continuous bidirectional fiber substructure and continuous unidirectional fiber. FDPs were polymerized incrementally with a handheld light curing unit for 40 s and statically loaded until final fracture. Results. Kruskal-Wallis analysis revealed that all groups had significantly different load-bearing capacities. Group 4 showed the highest mean load-bearing capacity and Group 7 the lowest. Conclusion. The results of this study suggest that continuous unidirectional fiber increased the mechanical properties of composite FDPs and bidirectional reinforcement slowed crack propagation on abutments.



Last updated on 2024-26-11 at 21:05