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dc.typeArtigo de periódicopt_BR
dc.titleThe Effect Of Hydrofluoric Acid Concentration On The Bond Strength And Morphology Of The Surface And Interface Of Glass Ceramics To A Resin Cementpt_BR
dc.contributor.authorSundfeld Netopt_BR
dc.contributor.authorD.; Navespt_BR
dc.contributor.authorL. Z.; Costapt_BR
dc.contributor.authorA. R.; Correrpt_BR
dc.contributor.authorA. B.; Consanipt_BR
dc.contributor.authorS.; Borgespt_BR
dc.contributor.authorG. A.; Correr-Sobrinhopt_BR
unicamp.authorCorrer-Sobrinho, L.] Univ Estadual Campinas, Piracicaba Dent Sch, Dept Restorat Dent, Dent Mat Div, BR-13414903 Piracicaba, SP, Brazilpt_BR[Sundfeld Neto,, L., A., A.,[Borges, G. A.] Univ Uberaba, Dent Mat & Restorat Dent, Uberaba, MG, Brazilpt
dc.subjectComposite Resinpt_BR
dc.subjectDental Ceramicspt_BR
dc.subjectAdhesive Resinpt_BR
dc.subjectLuting Agentspt_BR
dc.description.abstractThe purpose of this study was to evaluate the influence of various concentrations of hydrofluoric acid (HF) on the surface/interface morphology and mu-shear bond strength (mu SBS) between IPS Empress Esthetic (EST) (Ivoclar Vivadent) and IPS e.max Press (EMX) (Ivoclar Vivadent) ceramics and resin cement. Ceramic blocks were divided into 12 groups for each kind of ceramic. Six different HF concentrations were evaluated: 1%, 2.5%, 5%, 7.5%, 10%, and 15%. All groups were silanated after etching, and half of the specimens within each group received a thin layer of unfilled resin (UR). Three resin cement cylinders were prepared on each ceramic block for mu SBS testing. The specimens were stored in distilled water at 37 degrees C for 24 hours. The mu SBS test was carried out in a universal testing machine at a crosshead speed of 0.5 mm/min until fracture. The data were submitted to three-way analysis of variance andmultiple comparisons were performed using the Tukey post hoc test (p<0.05). The etched surfaces and bonded interfaces were evaluated using scanning electron microscopy. mu SBS means (MPa) for 1%, 2.5%, 5%, 7.5%, 10%, and 15% HF concentrations were, respectively, 25.2, 27.2, 30.1, 31.4, 33.3, and 31.8. mu SBS means with or without UR application measured 32.24 and 27.4, respectively; EST and EMX measured 29.8 and 29.9, respectively. For the HF concentrations, 10% and 15% showed higher mu SBS means than did 1% and 2.5% (p<0.05); 7.5% was higher than 1% (p<0.05); and no statistical differences were found among the other concentrations (p>0.05). When evaluating UR, mu SBS mean was significantly higher and better infiltration was observed on the etched surfaces. No statistical difference was found between the ceramics. The HF concentration and UR influenced the bond strength and surface/interface morphology.en
dc.relation.ispartofOPERATIVE DENTISTRYpt_BR
dc.identifier.citationThe Effect Of Hydrofluoric Acid Concentration On The Bond Strength And Morphology Of The Surface And Interface Of Glass Ceramics To A Resin Cement. Operative Dentistry Inc, v. 40, p. 470-479 SEP-OCT-2015.pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsorship1Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorship1Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsordocumentnumberCNPq [303928/2009-3]pt
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