A comparison of the film thickness of two adhesive luting agents and the effect of thermocycling on their microTBs to feldspathic ceramic.

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dc.contributor.authorPereira, Priscilla C
dc.contributor.authorCastilho, Anderson A
dc.contributor.authorSouza, Rodrigo O A
dc.contributor.authorPassos, Sheila P
dc.contributor.authorTakahashi, Fernando E
dc.contributor.authorBottino, Marco A
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:24:33Z
dc.date.available2014-05-27T11:24:33Z
dc.date.issued2009-12-01
dc.description.abstractThe aim of the present study was to evaluate the effect of thermocycling (TC) on the microtensile bond strength (microTBS) of two luting agents to feldspathic ceramic and to measure their film thickness (FT). For the microTBS test, sixteen blocks (6.4 x 6.4 x 4.8 mm) were fabricated using a feldspathic ceramic, etched with 10% hydrofluoric acid, rinsed and treated with the silane agent. The ceramic blocks were divided into two groups (n= 8): Gr1: dual-cured resin cement and Gr2: flowable resin. The luting agents were applied on the treated surfaces. Microsticks (1 +/-0. 1mm2) were prepared and stored under two conditions: dry, specimens immediately submitted to the microTBS test, and TC (6,000 cycles; 5 degrees C-55 degrees C). The microTBS was evaluated using a universal testing machine (1 mm/min). The microTBS data (MPa) were submitted to two-way ANOVA and Tukey' test (5%). For the FT test (ISO 4049), 0.05 ml of each luting agent (n=8) was pressed between two Mylar-covered glass plates (150 N) for 180 seconds and light polymerized. FT was measured using a digital paquimeter (Model 727-2001). The data (mm) were submitted to one-way ANOVA. The luting cement did not influence the microTBS results (p= 0.4467). Higher microtensile bond values were found after TC (20.5 +/- 8.6 MPa) compared to the dry condition (13.9 +/- 4. 7MPa), for both luting agents. The luting agents presented similar film thicknesses: Gr1- 0.052 +/- 0.016 mm; Gr2-0.041 +/- 0.003 mm. The luting agents presented similar film thickness and microTBS values, in dry and TC conditions and TC increased the bond strength regardless of the luting agent.en
dc.format.extent191-200
dc.identifierhttp://www.actaodontologicalat.com/archivo/v22n3/fulltext/articulo6.pdf
dc.identifier.citationActa odontológica latinoamericana : AOL, v. 22, n. 3, p. 191-200, 2009.
dc.identifier.issn0326-4815
dc.identifier.lattes4831502268574281
dc.identifier.lattes9234456003563666
dc.identifier.scopus2-s2.0-77953066507
dc.identifier.urihttp://hdl.handle.net/11449/71422
dc.language.isoeng
dc.relation.ispartofActa Odontológica Latinoamericana (AOL)
dc.relation.ispartofsjr0,264
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjecttooth cement
dc.subjectceramics
dc.subjectcomparative study
dc.subjectdental bonding
dc.subjectmaterials testing
dc.subjecttemperature
dc.subjectCeramics
dc.subjectDental Bonding
dc.subjectDental Cements
dc.subjectMaterials Testing
dc.subjectTemperature
dc.titleA comparison of the film thickness of two adhesive luting agents and the effect of thermocycling on their microTBs to feldspathic ceramic.en
dc.typeArtigo
dcterms.licensehttp://www.actaodontologicalat.com/peditorial.html
unesp.author.lattes4831502268574281
unesp.author.lattes9234456003563666
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt

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