Effect of glass fiber incorporation on flexural properties of experimental composites

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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 (N = 10) 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 t -test (α = 0.05). Results for flexural strength (MPa) were FR-groups: 0% (442.7 ± 140.6) C, 10% (772.8 ± 446.3) ABC, 15% (854.7 ± 297.3) AB, 20% (863.4 ± 418.0) A, 30% (459.5 ± 140.5) BC; UR-groups: 0% (187.7 ± 120.3) B, 10% (795.4 ± 688.1) B, 15% (1999.9 ± 1258.6) A, 20% (1911.5 ± 596.8) A, and 30% (2090.6 ± 656.7) A, and for flexural modulus (GPa) FR-groups: 0% (2065.63 ± 882.15) B, 10% (4479.06 ± 3019.82) AB, 15% (5694.89 ± 2790.3) A, 20% (6042.11 ± 3392.13) A, and 30% (2495.67 ± 1345.86) B; UR-groups: 0% (1090.08 ± 708.81) C, 10% (7032.13 ± 7864.53) BC, 15% (19331.57 ± 16759.12) AB, 20% (15726.03 ± 8035.09) AB, and 30% (29364.37 ± 13928.96) A. 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.

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Fonseca, R. B., Marques, A. S., Bernades, K. D. O., Carlo, H. L., & Naves, L. Z. (2014). Effect of glass fiber incorporation on flexural properties of experimental composites. BioMed Research International, 2014. https://doi.org/10.1155/2014/542678

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