title: Effect of glass fiber incorporation on flexural properties of experimental composites.
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.
authors.affiliation: Dental School, Federal University of Goiás, Praça Universitária, s/n, Setor Universitário, 74605-220 Goiânia, GO, Brazil.
authors.forename: Rodrigo Borges
authors.initials: RB
authors.lastname: Fonseca
authors.affiliation: Dental School, Federal University of Goiás, Praça Universitária, s/n, Setor Universitário, 74605-220 Goiânia, GO, Brazil.
authors.forename: Aline Silva
authors.initials: AS
authors.lastname: Marques
authors.affiliation: Dental School, Federal University of Goiás, Praça Universitária, s/n, Setor Universitário, 74605-220 Goiânia, GO, Brazil.
authors.forename: Karina de Oliveira
authors.initials: Kde O
authors.lastname: Bernades
authors.affiliation: Department of Restorative Dentistry, Health Sciences Center, Federal University of Paraíba, 58051-900 João Pessoa, PB, Brazil.
authors.forename: Hugo Lemes
authors.initials: HL
authors.lastname: Carlo
authors.affiliation: Piracicaba Dental School, State University of Campinas, 13414-903 Piracicaba, SP, Brazil.
authors.forename: Lucas Zago
authors.initials: LZ
authors.lastname: Naves
mesh_terms: D003188:Composite Resins / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D008422:Materials Testing
chemical_list: D003188:Composite Resins; C009753:fiberglass