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BioMed Research International
Volume 2014, Article ID 542678, 6 pages
http://dx.doi.org/10.1155/2014/542678
Research Article

Effect of Glass Fiber Incorporation on Flexural Properties of Experimental Composites

1Dental School, Federal University of Goiás, Praça Universitária, s/n, Setor Universitário, 74605-220 Goiânia, GO, Brazil
2Department of Restorative Dentistry, Health Sciences Center, Federal University of Paraíba, 58051-900 João Pessoa, PB, Brazil
3Piracicaba Dental School, State University of Campinas, 13414-903 Piracicaba, SP, Brazil

Received 17 February 2014; Revised 22 June 2014; Accepted 26 June 2014; Published 17 July 2014

Academic Editor: Evandro Piva

Copyright © 2014 Rodrigo Borges Fonseca et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This study evaluated the effect of fiber addiction in flexural properties of 30 wt% silica filled BisGMA resin (FR) or unfilled Bis-GMA (UR). Ten groups were created ( ) varying the resin (FR or UR) and quantity of glass fibers (wt%: 0, 10, 15, 20, and 30). Samples (10 × 2 × 1 mm) were submitted to flexural strength test following SEM examination. Data were analyzed by two-way ANOVA, Tukey, and Student -test ( ). Results for flexural strength (MPa) were FR-groups: 0% , 10% , 15% , 20% , 30% ; UR-groups: 0% , 10% , 15% , 20% , and 30% , and for flexural modulus (GPa) FR-groups: 0% , 10% , 15% , 20% , and 30% ; UR-groups: 0% , 10% , 15% , 20% , and 30% . Fiber addiction in BisGMA resin increases flexural properties, and the interaction between resin and fibers seems better in the absence of inorganic fillers increasing flexural properties.