Effect of sodium hypochlorite under several formulations on root canal dentin microhardness

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dc.contributor.authorGarcia, Arturo J.A.
dc.contributor.authorKuga, Milton C.
dc.contributor.authorPalma-Dibb, Regina G.
dc.contributor.authorSó, Marcus V.R.
dc.contributor.authorMatsumoto, Mariza A.
dc.contributor.authorFaria, Gisele [UNESP]
dc.contributor.authorKeine, Kátia C.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2015-08-06T16:14:00Z
dc.date.available2015-08-06T16:14:00Z
dc.date.issued2013
dc.description.abstractAim The aim of the present study was to evaluate the effect of three different formulations of sodium hypochlorite on the microhardness of root canal dentin in cervical and apical segments. Methods Twenty-four extracted human teeth had their roots sectioned along their long axes in a buccolingual direction. One half of each root was selected, and transversely sectioned resulting in two segments, cervical and apical, with similar lengths. The specimens were divided into three groups (n = 16), according to the sodium hypochlorite formulation used: (a) group 1, 2.5% sodium hypochlorite; (b) group 2, Chlor-XTRA; and (c) group 3, 5.5% sodium hypochlorite gel. These groups were subdivided in two subgroups (n = 8): cervical and apical root segments. Before testing the substances, dentin microhardness was measured on each section, 100 μm from the root canal with a Knoop tester. After 15 min of application, a new measurement was performed on each segment. Data were collected and registered for statistical treatment. Results In both segments, the substances reduced dentin microhardness. No differences were observed between the groups, independent of the analyzed segment (P > 0.05). Conclusions All substances reduced dentin microhardness. Chlor-XTRA and 5.5% sodium hypochlorite gel promoted a reduction similar to the 2.5% sodium hypochlorite solution.en
dc.description.affiliationUniversidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Odontologia de Araraquara, Araraquara, Rua Humaitá, 1680, Centro, CEP 14801-903, SP, Brasil
dc.description.affiliationUnespUniversidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Odontologia de Araraquara, Araraquara, Rua Humaitá, 1680, Centro, CEP 14801-903, SP, Brasil
dc.format.extent229-232
dc.identifier.citationJournal of Investigative and Clinical Dentistry, v. 4, n. 4, p. 229-232, 2013.
dc.identifier.doi10.1111/j.2041-1626.2012.00158.x
dc.identifier.issn2041-1618
dc.identifier.lattes1411074363039082
dc.identifier.orcid0000-0001-5389-0105
dc.identifier.urihttp://hdl.handle.net/11449/126121
dc.language.isoeng
dc.relation.ispartofJournal of Investigative and Clinical Dentistry
dc.relation.ispartofsjr0,433
dc.rights.accessRightsAcesso restrito
dc.sourceCurrículo Lattes
dc.subjectdentinen
dc.subjectdetergenten
dc.subjectendodonticen
dc.subjectmicrohardnessen
dc.subjectsodium hypochloriteen
dc.titleEffect of sodium hypochlorite under several formulations on root canal dentin microhardnessen
dc.typeArtigo
unesp.author.lattes1411074363039082
unesp.author.orcid0000-0001-5389-0105[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araraquarapt

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