Evaluation of pH and Calcium Ion Release of Calcium Hydroxide Pastes Containing Different Substances

dc.contributor.authorHungaro Duarte, Marco Antonio
dc.contributor.authorMidena, Raquel Zanin
dc.contributor.authorZeferino, Marcia A.
dc.contributor.authorVivan, Rodrigo Ricci
dc.contributor.authorWeckwerth, Paulo Henrique
dc.contributor.authordos Santos, Fernando
dc.contributor.authorGuerreiro-Tanomaru, Juliane Maria [UNESP]
dc.contributor.authorTanomaru-Filho, Mario [UNESP]
dc.contributor.institutionUniversidade do Sagrado Coração (USC)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:47:03Z
dc.date.available2014-05-20T13:47:03Z
dc.date.issued2009-09-01
dc.description.abstractIntroduction: The objective of this study was to evaluate the pH and calcium ion release of calcium hydroxide pastes associated with different substances. Methods: Forty acrylic teeth with simulated root canals were divided into 4 groups according to the substance associated to the calcium hydroxide paste: chlorhexidine (CHX) in 2 formulations (1% solution and 2% gel), Casearia sylvestris Sw extract, and propylene glycol (control). The teeth with pastes and sealed coronal accesses were immersed in 10 mL deionized water. After 10 minutes, 24 hours, 48 hours, and 7, 15, and 30 days, the teeth were removed to another container, and the liquid was analyzed. Calcium ion release was measured by atomic absorption spectrophotometry, and pH readings were made with a pH meter. Data were analyzed statistically by analysis of variance and Tukey test (alpha = 0.05). Results: Calcium analysis revealed significant differences (P < .05) for 1% CHX solution and 2% CHX gel at 10 minutes. After 24 hours, 2% CHX gel x Control and 2% CHX gel x 1% CHX solution differed significantly (P < .05). After 48 hours, there were significant differences (P < .05) for 2% CHX gel x Control and Extract x Control. No differences (P > .05) were observed among groups in the other periods. Regarding the pH, there were significant differences (P < .05) for 2% CHX gel x Control and 2% CHX gel x 1% CHX solution after 48 hours and for 2% CHX gel x Control after 15 days. In the other periods, no differences (P > .05) were observed among groups. Conclusions: All pastes behaved similarly in terms of pH and calcium ion release in the studied periods. (J Endod 2009;35:1274-1277)en
dc.description.affiliationSagrado Coracao Univ, Dept Hlth Sci, São Paulo, Brazil
dc.description.affiliationUniv São Paulo, Sagrado Coracao Univ Grad, São Paulo, Brazil
dc.description.affiliationUniv São Paulo, Dent Sch Bauru, São Paulo, Brazil
dc.description.affiliationSão Paulo State Univ, Dent Sch Araraquara, Dept Restorat Dent, São Paulo, Brazil
dc.description.affiliationUnespSão Paulo State Univ, Dent Sch Araraquara, Dept Restorat Dent, São Paulo, Brazil
dc.format.extent1274-1277
dc.identifierhttp://dx.doi.org/10.1016/j.joen.2009.05.009
dc.identifier.citationJournal of Endodontics. New York: Elsevier B.V., v. 35, n. 9, p. 1274-1277, 2009.
dc.identifier.doi10.1016/j.joen.2009.05.009
dc.identifier.issn0099-2399
dc.identifier.urihttp://hdl.handle.net/11449/16699
dc.identifier.wosWOS:000269760600020
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Endodontics
dc.relation.ispartofjcr2.886
dc.relation.ispartofsjr1,585
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectCalcium hydroxideen
dc.subjectcalcium releaseen
dc.subjectCasearia sylvestris Swen
dc.subjectchlorhexidineen
dc.subjectpHen
dc.subjectpropylene glycolen
dc.titleEvaluation of pH and Calcium Ion Release of Calcium Hydroxide Pastes Containing Different Substancesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.orcid0000-0003-3051-737X[1]
unesp.author.orcid0000-0002-2574-4706[8]
unesp.author.orcid0000-0003-0446-2037[7]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araraquarapt

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