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dc.contributor.authorPisani-Proenca, Jatyr-
dc.contributor.authorGuilherme Erhardt, Maria Carolina-
dc.contributor.authorAmaral, Regina-
dc.contributor.authorValandro, Luiz Felipe-
dc.contributor.authorBottino, Marco Antonio-
dc.contributor.authorDel Castillo-Salmeron, Ramon-
dc.identifier.citationJournal of Prosthetic Dentistry. New York: Mosby-elsevier, v. 105, n. 4, p. 227-235, 2011.-
dc.description.abstractStatement of problem. According to manufacturers, bonding with self-adhesive resin cements can be achieved without any pretreatment steps such as etching, priming, or bonding. However, the benefit of saving time with these simplified luting systems may be realized at the expense of compromising the bonding capacity.Purpose. The purpose of this study was to assess whether different dentin conditioning protocols influence the bond performance of self-adhesive resin cements to dentin.Material and methods. Flat dentin surfaces from 48 human molars were divided into 4 groups (n=12): 1) control, no conditioning; 2) H(3)PO(4), etching with 37% H(3)PO(4) for 15 seconds; 3) SEBond, bonding with self-etching primer adhesive (Clearfil SE Bond); and 4) EDTA, etching with 0.1M EDTA for 60 seconds. The specimens from each dentin pre-treatment were bonded using the self-adhesive cements RelyX Unicem, Maxcem or Multilink Sprint (n=4). The resin-cement-dentin specimens were stored in water at 37 degrees C for 7 days, and serially sectioned to produce beam specimens of 1.0 mm(2) cross-sectional area. Microtensile bond strength (mu TBS) testing was performed at 1.0 mm/min. Data (MPa) were analyzed by 2-way ANOVA and Tukey multiple comparisons test (alpha=.05). Fractured specimens were examined with a stereomicroscope (x40) and classified as adhesive, mixed, or cohesive. Additional bonded interfaces were evaluated under a scanning electron microscope (SEM).Results. Cement-dentin mu TBS was affected by the dentin conditioning approach (P <.001). RelyX Unicem attained statistically similar bond strengths to all pre-treated dentin surfaces. H(3)PO(4)-etching prior to the application of Maxcem resulted in bond strength values that were significantly higher than the other groups. The lowest mu TBS were attained when luting Multilink Sprint per manufacturers' recommendations, while H(3)PO(4)-etching produced the highest values followed by Clearfil SE bonding and EDTA. SEM observations disclosed an enhanced potential of the self-adhesive cements to form a hybrid layer when applied following manufacturer's instructions.Conclusions. When evaluated self-adhesive resin cements are used, selectively etching dentin with H(3)PO(4) prior to luting results in the most effective bonding. (J Prosthet Dent 2011;105:227-235)en
dc.sourceWeb of Science-
dc.contributor.institutionUniversidade Federal do Rio Grande do Sul (UFRGS)-
dc.contributor.institutionUniv Granada-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade Federal de Santa Maria (UFSM)-
dc.description.affiliationUniversidade Federal do Rio Grande do Sul (UFRGS), Sch Dent, Dept Conservat Dent, BR-90035003 Porto Alegre, RS, Brazil-
dc.description.affiliationUniv Granada, Dept Stomatol, Sch Dent, Granada, Spain-
dc.description.affiliationSão Paulo State Univ Sao Jose dos Campos, Sch Dent, Dept Dent Mat & Prosthodont, Sao Jose Dos Campos, Brazil-
dc.description.affiliationUniversidade Federal de Santa Maria (UFSM), Sch Dent, Dept Restorat Dent, Rio Grande do Sul, Brazil-
dc.description.affiliationUniv Granada, Sch Dent, Dept Prosthodont, Granada, Spain-
dc.description.affiliationUnespSão Paulo State Univ Sao Jose dos Campos, Sch Dent, Dept Dent Mat & Prosthodont, Sao Jose Dos Campos, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of Prosthetic Dentistry-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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