Effect of Acid Neutralization and Mechanical Cycling on the Microtensile Bond Strength of Glass-ceramic Inlays

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dc.contributor.authorSaavedra, G.
dc.contributor.authorAriki, E. K.
dc.contributor.authorFederico, C. D.
dc.contributor.authorGalhano, G.
dc.contributor.authorZamboni, S.
dc.contributor.authorBaldissara, P.
dc.contributor.authorBottino, M. A. [UNESP]
dc.contributor.authorValandro, L. F.
dc.contributor.institutionUniv Bologna
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Santa Maria (UFSM)
dc.date.accessioned2014-05-20T14:05:04Z
dc.date.available2014-05-20T14:05:04Z
dc.date.issued2009-03-01
dc.description.abstractObjectives: To evaluate the hypothesis that a process of hydrofluoric acid precipitate neutralization and fatigue load cycling performed on human premolars restored with ceramic inlays had an influence on microtensile bond strength results (MTBS). Methods: MOD inlay preparations were performed in 40 premolars (with their roots embedded in acrylic resin). Forty ceramic restorations were prepared using glass-ceramic (IPS Empress). The inner surfaces of all the restorations were etched with 10% hydrofluoric acid for 60 seconds, rinsed with water and dried. The specimens were divided into two groups (N=20): 1-without neutralization; 2-with neutralization. All the restorations were silanized and adhesively cemented (self-curing and self-etching luting composite system, Multilink). Ten premolars from each group were submitted to mechanical cycling (1,400,000 cycles, 50N, 37 degrees C). After cycling, the samples were sectioned to produce non-trimmed beam specimens (vestibular dentin-restoration-lingual dentin set), which were submitted to microtensile testing. Results: Bond strength was significantly affected by the surface treatment (p<0.0001) (no neutralization > neutralization) and mechanical cycling (p<0.0001) (control > cycling) (2-way ANOVA and Tukey test, alpha=.05). Conclusion: Hydrofluoric acid precipitate neutralization appears to significantly damage the resin bond to glass-ceramic and should not be recommended. The clinical simulation of the specimens, by using mechanical cycling, is important when evaluating the ceramic-dentin bond.en
dc.description.affiliationUniv Bologna, Div Prosthodont, Dept Oral Sci Alma Mater Studiorum, Bologna, Italy
dc.description.affiliationSão Paulo State Univ UNESP, Sao Jose Campos Dent Sch, Dept Dent Mat & Prosthodont, Sao Jose Dos Campos, Brazil
dc.description.affiliationUniversidade Federal de Santa Maria (UFSM), Div Prosthodont, Dept Restorat Dent, BR-97119900 Santa Maria, RS, Brazil
dc.description.affiliationUnespSão Paulo State Univ UNESP, Sao Jose Campos Dent Sch, Dept Dent Mat & Prosthodont, Sao Jose Dos Campos, Brazil
dc.format.extent211-216
dc.identifierhttp://dx.doi.org/10.2341/08-68
dc.identifier.citationOperative Dentistry. Indianapolis: Operative Dentistry Inc, v. 34, n. 2, p. 211-216, 2009.
dc.identifier.doi10.2341/08-68
dc.identifier.issn0361-7734
dc.identifier.lattes9234456003563666
dc.identifier.urihttp://hdl.handle.net/11449/22819
dc.identifier.wosWOS:000264014900012
dc.language.isoeng
dc.publisherOperative Dentistry Inc
dc.relation.ispartofOperative Dentistry
dc.relation.ispartofjcr2.130
dc.relation.ispartofsjr1,180
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleEffect of Acid Neutralization and Mechanical Cycling on the Microtensile Bond Strength of Glass-ceramic Inlaysen
dc.typeArtigo
dcterms.rightsHolderOperative Dentistry Inc
unesp.author.lattes9234456003563666
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt

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