A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Load-bearing capacity of fiber reinforced fixed composite bridges
Tekijät: Basaran EG, Ayna E, Li SU, Vallittu PK, Lassila LVJ
Kustantaja: INFORMA HEALTHCARE
Julkaisuvuosi: 2013
Lehti: Acta Odontologica Scandinavica
Tietokannassa oleva lehden nimi: ACTA ODONTOLOGICA SCANDINAVICA
Lehden akronyymi: ACTA ODONTOL SCAND
Numero sarjassa: 1
Vuosikerta: 71
Numero: 1
Aloitussivu: 65
Lopetussivu: 71
Sivujen määrä: 7
ISSN: 0001-6357
DOI: https://doi.org/10.3109/00016357.2011.654240
Tiivistelmä
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.
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.
Avainsanat:
fiber-reinforced composite, fixed dental prosthesis, load-bearing capacity
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