dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.contributor | Post-graduation Program in Dentistry, Dental School, University of Passo Fundo | |
dc.contributor | Prosthodontics Unit, Faculty of Odontology, Federal University of Santa Maria | |
dc.date.accessioned | 2018-12-11T16:58:19Z | |
dc.date.available | 2018-12-11T16:58:19Z | |
dc.date.created | 2018-12-11T16:58:19Z | |
dc.date.issued | 2015-08-10 | |
dc.identifier | International Journal of Adhesion and Adhesives, v. 63, p. 96-101. | |
dc.identifier | 0143-7496 | |
dc.identifier | http://hdl.handle.net/11449/172056 | |
dc.identifier | 10.1016/j.ijadhadh.2015.08.010 | |
dc.identifier | 2-s2.0-84941130284 | |
dc.identifier | 2-s2.0-84941130284.pdf | |
dc.identifier | 5130377144315365 | |
dc.identifier | 0000-0002-1074-5319 | |
dc.description.abstract | Purpose 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.language | eng | |
dc.relation | International Journal of Adhesion and Adhesives | |
dc.relation | 0,926 | |
dc.rights | Acesso aberto | |
dc.source | Scopus | |
dc.subject | Feldspathic ceramics | |
dc.subject | Heat treatment | |
dc.subject | Microtensile test | |
dc.subject | Silane | |
dc.subject | Thermocycling | |
dc.title | Heat treatment of silanized feldspathic ceramic: Effect on the bond strength to resin after thermocycling | |
dc.type | Artículos de revistas | |