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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleImpact and Fracture Resistance of an Experimental Acrylic Polymer with Elastomer in Different Proportionspt_BR
dc.contributor.authorPires-de-Souza, FDPpt_BR
dc.contributor.authorPanzeri, Hpt_BR
dc.contributor.authorVieira, MApt_BR
dc.contributor.authorGarcia, LDRpt_BR
dc.contributor.authorConsani, Spt_BR
unicamp.authorPanzeri Pires-de-Souza, Fernanda de Carvalho Panzeri, Heitor Vieira, Marcelo Aparecido Univ Sao Paulo, Dept Dent Mat & Prosthodont, Ribeirao Preto Sch Dent, BR-14040904 Ribeirao Preto, SP, Brazilpt_BR
unicamp.authorRoberti Garcia, Lucas da Fonseca Consani, Simonides State Univ Campinas UNICAMP, Dept Restorat Dent, Dent Mat Area, Piracicaba Sch Dent, Piracicaba, SP, Brazilpt_BR
dc.subjectimpact testingpt_BR
dc.subjectfracture toughnesspt_BR
dc.subjectpoly (methyl methacrylate)pt_BR
dc.subject.wosDenture-base Materialspt_BR
dc.subject.wosPoly(methyl Methacrylate)pt_BR
dc.description.abstractThe purpose of this study was to evaluate the impact and fracture resistance of acrylic resins: a heat-polymerized resin, a high-impact resin and an experimental polymethyl methacrylate with elastomer in different proportions (10, 20, 40 and 60%). 120 specimens were fabricated and submitted to conventional heat-polymerization. For impact test, a Charpy-type impact tester was used. Fracture resistance was assessed with a 3-point bending test by using a mechanical testing machine. Ten specimens were used for each test. Fracture (MPa) and impact resistance values (J.m(-1)) were submitted to ANOVA - Bonferroni's test - 5% significance level. Materials with higher amount of elastomer had statistically significant differences regarding to impact resistance (p < 0.05). Fracture resistance was superior (p < 0.01) for high-resistance acrylic resin. The increase in elastomer concentration added to polymethyl methacrylate raised the impact resistance and decreased the fracture resistance. Processing the material by injection decreased its resistance to impact and
dc.relation.ispartofMaterials Research-ibero-american Journal Of Materialspt_BR
dc.relation.ispartofabbreviationMater. Res.-Ibero-am. J. Mater.pt_BR
dc.publisher.citySao Carlospt_BR
dc.publisherUniv Fed Sao Carlos, Dept Engenharia Materialspt_BR
dc.identifier.citationMaterials Research-ibero-american Journal Of Materials. Univ Fed Sao Carlos, Dept Engenharia Materials, v. 12, n. 4, n. 415, n. 418, 2009.pt_BR
dc.sourceWeb of Sciencept_BR
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