Adhesive performance of dentin bonding agents applied in vivo and in vitro. Effect of intrapulpal pressure and dentin depth

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dc.contributor.authorHebling, Josimeri
dc.contributor.authorCastro, Fabricio L. A.
dc.contributor.authorCosta, Carlos A. S.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionPaulista Univ UNIP
dc.date.accessioned2014-05-20T15:24:46Z
dc.date.available2014-05-20T15:24:46Z
dc.date.issued2007-11-01
dc.description.abstractThe purpose of this study was to evaluate the influence of intrapulpal pressure and dentin depth on bond strengths of an etch-and-rinse and a self-etching bonding agent to dentin in vitro and in vivo. Twenty-four pairs of premolars were randomly divided into four groups (n = 6) according to the dentin bonding agent, Single Bond and Clearfil SE Bond, and intrapulpal pressure, null or positive. Each tooth of the pair was further designated to be treated in vivo or in vitro. The intrapulpal pressure was controlled in vivo by the delivery of local anesthetics containing or not a vasoconstrictor, while in vitro, it was achieved by keeping the teeth under hydrostatic pressure. Class I cavities were prepared and the dentin bonding agents were applied followed by incremental resin restoration. For the teeth treated in vitro, the same restorative procedures were performed after a 6 month-storage period. Beams with I mm 2 cross-sectional area were prepared and, microtensile tested. Clearfil SE Bond was not influenced by any of the variables of the study, while bond strengths produced in vitro were significatly higher for Single Bond. Overall, lower bond strengths were produced in deep dentin, which reached statistical significance when Single Bond was applied under physiological or simulated intrapulpal pressure. In conclusion, in vitro bonding may overestimate the immediate adhesive performance of more technique-sensitive dentin bonding systems. The impact of intrapulpal pressure on bond strength seems to be more adhesive dependent than dentin morphological characteristics related to depth. (C) 2007 Wiley Periodicals, Inc.en
dc.description.affiliationUniv Estadual Paulista, Sch Dent, Dept Orthodont & Pediat Dent, São Paulo, Brazil
dc.description.affiliationPaulista Univ UNIP, Sch Dent, Dept Restorat Dent, Goiania, Go, Brazil
dc.description.affiliationUniv Estadual Paulista, Sch Dent, Dept Physiol & Pathol, São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Sch Dent, Dept Orthodont & Pediat Dent, São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Sch Dent, Dept Physiol & Pathol, São Paulo, Brazil
dc.format.extent295-303
dc.identifierhttp://dx.doi.org/10.1002/jbm.b.30795
dc.identifier.citationJournal of Biomedical Materials Research Part B-applied Biomaterials. Hoboken: Wiley-liss, v. 83B, n. 2, p. 295-303, 2007.
dc.identifier.doi10.1002/jbm.b.30795
dc.identifier.issn1552-4973
dc.identifier.urihttp://hdl.handle.net/11449/35319
dc.identifier.wosWOS:000250425400001
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofJournal of Biomedical Materials Research Part B: Applied Biomaterials
dc.relation.ispartofjcr3.373
dc.relation.ispartofsjr0,715
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectbond strengthpt
dc.subjectdentinpt
dc.subjectbonding agentspt
dc.subjectintrapulpal pressurept
dc.subjectdentin depthpt
dc.titleAdhesive performance of dentin bonding agents applied in vivo and in vitro. Effect of intrapulpal pressure and dentin depthen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-Blackwell
unesp.author.lattes4517484241515548[3]
unesp.author.orcid0000-0002-7455-6867[3]
unesp.author.orcid0000-0001-5962-5951[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araraquarapt

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