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dc.contributor.authorMelo, Renata M.-
dc.contributor.authorRahbar, Nima-
dc.contributor.authorSoboyejo, Wole-
dc.identifier.citationMaterials Science & Engineering C-materials For Biological Applications. Amsterdam: Elsevier B.V., v. 31, n. 4, p. 770-774, 2011.-
dc.description.abstractThe paper presents the results of an experimental study of interfacial failure in a multilayered structure consisting of a dentin/resin cement/quartz-fiber reinforced composite (FRC). Slices of dentin close to the pulp chamber were sandwiched by two half-circle discs made of a quartz-fiber reinforced composite, bonded with bonding agent (All-bond 2, BISCO, Schaumburg) and resin cement (Duo-link. BISCO, Schaumburg) to make Brazil-nut sandwich specimens for interfacial toughness testing. Interfacial fracture toughness (strain energy release rate, G) was measured as a function of mode mixity by changing loading angles from 0 degrees to 15 degrees. The interfacial fracture surfaces were then examined using Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDX) to determine the failure modes when loading angles changed. A computational model was also developed to calculate the driving forces, stress intensity factors and mode mixities. Interfacial toughness increased from approximate to 1.5 to 3.2 J/m(2) when the loading angle increases from approximate to 0, 0 to 15 degrees. The hybridized dentin/cement interface appeared to be tougher than the resin cement/quartz-fiber reinforced epoxy. The Brazil-nut sandwich specimen was a suitable method to investigate the mechanical integrity of dentin/cement/FRC interfaces. (C) 2011 Elsevier B.V. All rights reserved.en
dc.publisherElsevier B.V.-
dc.sourceWeb of Science-
dc.subjectInterfacial fracture toughnessen
dc.subjectResin cementsen
dc.subjectDentin bonding agentsen
dc.subjectFiber reinforced compositeen
dc.titleInterfacial fracture of dentin adhesively bonded to quartz-fiber reinforced compositeen
dc.contributor.institutionUniv Massachusetts Dartmouth-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionPrinceton University-
dc.description.affiliationUniv Massachusetts Dartmouth, Dept Civil & Environm Engn, N Dartmouth, MA 02720 USA-
dc.description.affiliationSão Paulo State Univ UNESP, Dept Dent Mat & Pronsthodont Sao Jose dos Campos, BR-12245820 São Paulo, Brazil-
dc.description.affiliationPrinceton Univ, Dept Mech & Aerosp Engn, Princeton Inst Sci & Technol Mat PRISM, Princeton, NJ 08544 USA-
dc.description.affiliationUnespSão Paulo State Univ UNESP, Dept Dent Mat & Pronsthodont Sao Jose dos Campos, BR-12245820 São Paulo, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofMaterials Science & Engineering C-materials For Biological Applications-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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