dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorPost-graduation Program in Dentistry, Dental School, University of Passo Fundo
dc.contributorProsthodontics Unit, Faculty of Odontology, Federal University of Santa Maria
dc.date.accessioned2018-12-11T16:58:19Z
dc.date.available2018-12-11T16:58:19Z
dc.date.created2018-12-11T16:58:19Z
dc.date.issued2015-08-10
dc.identifierInternational Journal of Adhesion and Adhesives, v. 63, p. 96-101.
dc.identifier0143-7496
dc.identifierhttp://hdl.handle.net/11449/172056
dc.identifier10.1016/j.ijadhadh.2015.08.010
dc.identifier2-s2.0-84941130284
dc.identifier2-s2.0-84941130284.pdf
dc.identifier5130377144315365
dc.identifier0000-0002-1074-5319
dc.description.abstractPurpose This study aimed to evaluate the effect of heat treatment (at 77 °C) of a silanized feldspathic ceramic on microtensile bond strength (μTBS) with a resin cement before and after being aged by thermocycling. Material and methods Twenty-four blocks (12×10×4 mm<sup>3</sup>) of a CAD/CAM feldspathic ceramic (Vitablocks Mark II, Vita) were obtained and randomly divided into three groups, according to the surface treatment prior to the cementation: Group AS - hydrofluoric acid 10%+silane; Group S77 - silane+heating at 77 °C for 60 s; and Group AS77 - hydrofluoric acid 10%+silane+heating at 77 °C for 60 s. Ceramic blocks were cemented to composite resin blocks with a resin cement. The sets were subsequently cross-sectioned into 1 mm<sup>2</sup> beams for μTBS testing. The beams of each group were randomly divided into two subgroups: aging (thermocycling, 12,000 cycles between 5 °C and 55 °C) and non-aging (tested immediately). One-way ANOVA and Tukey's test (α=0.05) and Weibull analysis (95% CI) were used to analyze the data. Results Group AS77 had the lowest pre-test failure number during the cutting among the groups. There was no significant difference (p=0.255) between the μTBS mean values of the non-aged groups. After aging, the mean value of S77 was significantly lower than those of AS77 and AS (p=0.005). There was no difference in the Weibull modulus (m) and characteristic strength (σ<inf>0</inf>) of the aged and non-aged groups for all comparisons. Before aging, heat treatment of silanized feldspathic ceramic (non acid-etched surface) demonstrated bond strength similar to that achieved with hydrofluoric-acid-etching treatment however, it had lower bond strength after aging. Conclusion The combination of hydrofluoric-acid-etching treatment with heat treatment silanized feldspathic ceramic did not improve the bond strength of the interface.
dc.languageeng
dc.relationInternational Journal of Adhesion and Adhesives
dc.relation0,926
dc.rightsAcesso aberto
dc.sourceScopus
dc.subjectFeldspathic ceramics
dc.subjectHeat treatment
dc.subjectMicrotensile test
dc.subjectSilane
dc.subjectThermocycling
dc.titleHeat treatment of silanized feldspathic ceramic: Effect on the bond strength to resin after thermocycling
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución