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Effect of Ceramic Thickness and Shade on Mechanical Properties of a Resin Luting Agent

dc.contributor.authorPassos, Sheila Pestana
dc.contributor.authorKimpara, Estevao Tomomitsu [UNESP]
dc.contributor.authorBottino, Marco Antonio [UNESP]
dc.contributor.authorRizkalla, Amin S.
dc.contributor.authorSantos, Gildo Coelho
dc.contributor.institutionUniv Alberta
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Western Ontario
dc.date.accessioned2015-03-18T15:55:17Z
dc.date.available2015-03-18T15:55:17Z
dc.date.issued2014-08-01
dc.description.abstractPurpose: This study aimed to investigate the influence of ceramic thickness and shade on the Knoop hardness and dynamic elastic modulus of a dual-cured resin cement.Materials and Methods: Six ceramic shades (Bleaching, A1, A2, A3, A3.5, B3) and two ceramic thicknesses (1 mm, 3 mm) were evaluated. Disk specimens (diameter: 7 mm; thickness: 2 mm) of the resin cement were light cured under a ceramic block. Light-cured specimens without the ceramic block at distances of 1 and 3mm were also produced. The Knoop hardness number (KHN), density, and dynamic Young's moduli were determined. Statistical analysis was conducted using ANOVA and a Tukey B rank order test (p = 0.05).Results: The bleaching 1-mm-thick group exhibited significantly higher dynamic Young's modulus. Lower dynamic Young's moduli were observed for the 3-mm-thick ceramic groups compared to bleaching 3-mm-thick group, and no difference was found among the other 3-mm groups. For the KHN, when A3.5 3-mm-thick was used, the KHN was significantly lower than bleaching and A1 1-mm-thick ceramic; however, no difference was exhibited between the thicknesses of the same shade.Conclusions: The dual-cured resin cement studied irradiated through the 1-mm-thick ceramic with the lightest shade (bleaching ceramic) exhibited a better elastic modulus, and there was no effect in KHN of the resin cement when light cured under different ceramic shades and thicknesses (1 and 3 mm), except when the A3.5 3-mm-thick ceramic was used.Clinical Significance: Variolink II irradiated through ceramic with the lowest chroma exhibited the highest elastic modulus; therefore, the light activation method might not be the same for all clinical situations.en
dc.description.affiliationUniv Alberta, Sch Dent, Edmonton, AB, Canada
dc.description.affiliationSao Paulo State Univ, Dept Dent Mat & Prosthodont, Sao Jose Dos Campos, Brazil
dc.description.affiliationUniv Western Ontario, Schulich Sch Med & Dent, Dept Chem & Biochem Engn, London, ON N6A 5C1, Canada
dc.description.affiliationUniv Western Ontario, Schulich Sch Med & Dent, Dept Restorat Dent, London, ON N6A 5C1, Canada
dc.description.affiliationUnespSao Paulo State Univ, Dept Dent Mat & Prosthodont, Sao Jose Dos Campos, Brazil
dc.format.extent462-466
dc.identifierhttp://dx.doi.org/10.1111/jopr.12140
dc.identifier.citationJournal Of Prosthodontics-implant Esthetic And Reconstructive Dentistry. Hoboken: Wiley-blackwell, v. 23, n. 6, p. 462-466, 2014.
dc.identifier.doi10.1111/jopr.12140
dc.identifier.issn1059-941X
dc.identifier.lattes0967916388665754
dc.identifier.lattes9234456003563666
dc.identifier.urihttp://hdl.handle.net/11449/117137
dc.identifier.wosWOS:000340560800005
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofJournal Of Prosthodontics-implant Esthetic And Reconstructive Dentistry
dc.relation.ispartofjcr1.745
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectDual-cured resin luting agenten
dc.subjectdynamic elastic modulusen
dc.subjectmicrohardnessen
dc.titleEffect of Ceramic Thickness and Shade on Mechanical Properties of a Resin Luting Agenten
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-Blackwell
unesp.author.lattes0967916388665754
unesp.author.lattes9234456003563666
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt
unesp.departmentMateriais Odontológicos e Prótese - ICTpt

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