A1 Journal article – refereed
Load-bearing capacity of fiber reinforced fixed composite bridges

List of Authors: Basaran EG, Ayna E, Li SU, Vallittu PK, Lassila LVJ
Publication year: 2013
Journal: Acta Odontologica Scandinavica
Journal acronym: ACTA ODONTOL SCAND
Number in series: 1
Volume number: 71
Issue number: 1
Number of pages: 7
ISSN: 0001-6357

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.

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Last updated on 2019-20-07 at 04:43