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.


fiber-reinforced composite, fixed dental prosthesis, load-bearing capacity



Last updated on 26/11/2024 09:05:28 PM