Effect of Glass Fiber Incorporation on Flexural Properties of Experimental Composites

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.