Effect of ceramic etching protocols on resin bond strength to a feldspar ceramic

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dc.contributor.authorBottino, M. A. [UNESP]
dc.contributor.authorSnellaert, A.
dc.contributor.authorBergoli, C. D.
dc.contributor.authorOezcan, M.
dc.contributor.authorBottino, M. C.
dc.contributor.authorValandro, L. F.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Fed Pelotas
dc.contributor.institutionUniv Zurich
dc.contributor.institutionIndiana Univ
dc.contributor.institutionUniversidade Federal de Sergipe (UFS)
dc.date.accessioned2015-10-21T13:15:18Z
dc.date.available2015-10-21T13:15:18Z
dc.date.issued2015-03-01
dc.description.abstractThis study sought to evaluate the resin micro-tensile bond strength (MTBS) stability of a leucite-reinforced ceramic after different ceramic etching protocols. The microtensile test had 40 ceramic blocks (5x5x6 mm) assigned to five groups (n=8), in accordance with the following surface etching protocols: NE nonetched (control); 9HF: hydrofluoric (HF) acid etching (9% HF)+wash/dry; 4HF: 4%HF+wash/dry; 5HF: 5%HF+wash/dry; and 5HF+N: 5%HF+neutralizer+wash/dry+ultrasonic-cleaning. Etched ceramic surfaces were treated with a silane agent. Next, resin cement blocks were built on the prepared ceramic surface and stored for 24 hours in distilled water at 37 degrees C. The specimens were then sectioned to obtain microtensile beams (32/block), which were randomly assigned to the following conditions, nonaged (immediate test) and aged (water storage for 150 days plus 12,000 thermal cycles), before the microtensile test. Bond strength data were submitted to one-way analysis of variance and Tukey test (alpha=0.05). Additional ceramic samples were subjected to the different ceramic etching protocols and evaluated using a scanning electron microscope (n=2) and atomic force microscopy (n=2). Aging led to a statistically significant decrease in the MTBS for all groups, except the untreated one (NE). Among the groups submitted to the same aging conditions, the untreated (NE) revealed inferior MTBS values compared to the 9HF and 4HF groups. The 5HF and 5HF+N groups had intermediate mean values, being statistically similar to the higher values presented by the 9HF and 4HF groups and to the lower value associated with the NE group. The neutralization procedure did not enhance the ceramic/resin cement bond strength. HF acid etching is a crucial step in resin/ceramic bonding.en
dc.description.affiliationSao Paulo State Univ UNESP, Dent Mat &Prosthodont, Sao Jose Dos Campos, Brazil
dc.description.affiliationUniv Fed Pelotas, Restorat Dent Prosthodont, Pelotas, Brazil
dc.description.affiliationUniv Zurich, Dent Mat Unit, Ctr Dent &Oral Med, Clin Fixed &Removable Prosthodont &Dent Mat, Zurich, Switzerland
dc.description.affiliationIndiana Univ, Sch Dent, Div Dent Biomat, Restorat Dent, Indianapolis, IN USA
dc.description.affiliationUniv Fed Santa Maria, Restorat Dent Prosthodont, BR-97119900 Santa Maria, RS, Brazil
dc.description.affiliationUnespSao Paulo State Univ UNESP, Dent Mat &Prosthodont, Sao Jose Dos Campos, Brazil
dc.format.extentE40-E46
dc.identifierhttp://www.jopdentonline.org/doi/abs/10.2341/13-344-L
dc.identifier.citationOperative Dentistry, v. 40, n. 2, p. E40-E46, 2015.
dc.identifier.doi10.2341/13-344-L
dc.identifier.issn0361-7734
dc.identifier.lattes9234456003563666
dc.identifier.urihttp://hdl.handle.net/11449/128900
dc.identifier.wosWOS:000352490000015
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 ceramic etching protocols on resin bond strength to a feldspar ceramicen
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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