Effects of chlorhexidine and sodium hypochlorite on the microhardness of root canal dentin

dc.contributor.authorOliveira, Luciane Dias
dc.contributor.authorTalge Carvalho, Claudio Antonio
dc.contributor.authorNunes, Willian
dc.contributor.authorValera, Marcia Carneiro
dc.contributor.authorRibeiro Camargo, Carlos Henrique
dc.contributor.authorCardoso Jorge, Antonio Olavo
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:04:20Z
dc.date.available2014-05-20T14:04:20Z
dc.date.issued2007-10-01
dc.description.abstractObjective. The purpose of this study was to evaluate the effects of endodontic irrigants on the microhardness of root canal dentin.Study design. Thirty extracted single-rooted human teeth were used. The crowns were sectioned at the cementoenamel junction. Each root was transversely sectioned into cervical, middle, and apical segments, resulting in 90 specimens. The 3 sections of each root were separately mounted in an individual silicon device with acrylic resin. The specimens were randomly divided into the following 3 groups (n = 30), according to the irrigant solution used: (1) group 1, control (saline solution); (2) group 2, 2% chlorhexidine gluconate solution; and (3) group 3, 1% sodium hypochlorite (NaOCl). After 15 minutes of irrigation, dentin microhardness was measured on each section at 500 mu m and 1000 mu m from the pulp-dentin interface with a Vickers diamond microhardness tester in Vickers hardness number (VHN).Results. Data obtained were analyzed using analysis of variance and the Tukey test (5%). Specimens irrigated with 2% chlorhexidine (group 2) or 1% NaOCl (group 3) presented lower values of dentin microhardness, with significant difference in relation to the control group (P < .05).Conclusion. It could be concluded that chlorhexidine and NaOCl solutions significantly reduced the microhardness of root canal dentin at 500 mu m and 1000 mu m from the pulp-dentin interface.en
dc.description.affiliationUniv Estadual Paulista, Sch Dent, Dept Oral Biosci & Diag, Sao Jose Dos Campos, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Restorat Dent, Sao Jose Dos Campos, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Sch Dent, Dept Oral Biosci & Diag, Sao Jose Dos Campos, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Restorat Dent, Sao Jose Dos Campos, Brazil
dc.format.extentE125-E128
dc.identifierhttp://dx.doi.org/10.1016/j.tripleo.2007.04.019
dc.identifier.citationOral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology. New York: Mosby-elsevier, v. 104, n. 4, p. E125-E128, 2007.
dc.identifier.doi10.1016/j.tripleo.2007.04.019
dc.identifier.issn1079-2104
dc.identifier.lattes0053567153623569
dc.identifier.urihttp://hdl.handle.net/11449/22571
dc.identifier.wosWOS:000250170300049
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofOral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleEffects of chlorhexidine and sodium hypochlorite on the microhardness of root canal dentinen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes0053567153623569[6]
unesp.author.orcid0000-0001-7398-6438[4]
unesp.author.orcid0000-0002-1747-6158[6]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt

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