Determinação de elementos químicos e da microdureza transversal da dentina esclerótica humana

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dc.contributor.authorSouza, Maurício Yugo de [UNESP]
dc.contributor.authorMeirelles, Laura Celia Fernandes [UNESP]
dc.contributor.authorDuque, Isabela Roberta Vieira [UNESP]
dc.contributor.authorMailart, Mariane Cintra [UNESP]
dc.contributor.authorCaneppele, Taciana Marco Ferraz [UNESP]
dc.contributor.authorBresciani, Eduardo [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:15:46Z
dc.date.available2018-12-11T17:15:46Z
dc.date.issued2017-07-01
dc.description.abstractObjective: The aim of this study was to assess the amount of chemical elements (Ca, O, C, P, Fe, and Mg) and the cross-section hardness of sclerotic darkened dentin in human teeth. Material and Methods: The study was approved by the local IRB and ten extracted teeth (five sound and five presenting sclerotic darkened dentin) were used. Tooth was sectioned mesiodistally and each half was used for each test. Amount of chemical elements (%w) was determined by energy dispersive X-ray spectroscopy (EDS) in three different dentin areas (shallow, medium, or deep sound or sclerotic dentin). Knoop microhardness was determined at the same EDS areas. Data were analyzed by two-way ANOVA and multiple comparison tests, with significance level at 5%. Results: No difference on microhardness was detected between sound and sclerotic dentin (p = 0.743) and also among dentin depths (p = 0.837). Lower Ca (p = 0.024) and higher C (p = 0.015) amounts were found at superficial sclerotic dentin. Increased Mg content (p < 0.001) was detected in sound dentin. Conclusion: It was concluded darkened sclerotic dentin presents similar cross-section microhardness to sound dentin. The assessed chemical elements were similarly present in sound or sclerotic dentin, except for Mg, which was present higher concentration in sound dentin. Ca and P were lower in superficial sclerotic dentin.en
dc.description.affiliationSão Paulo State University (Unesp) Institute of Science and Technology São José dos Campos Department of Restorative Dentistry
dc.description.affiliationUnespSão Paulo State University (Unesp) Institute of Science and Technology São José dos Campos Department of Restorative Dentistry
dc.format.extent58-64
dc.identifierhttp://dx.doi.org/10.14295/bds.2017.v20i3.1412
dc.identifier.citationBrazilian Dental Science, v. 20, n. 3, p. 58-64, 2017.
dc.identifier.doi10.14295/bds.2017.v20i3.1412
dc.identifier.issn2178-6011
dc.identifier.scopus2-s2.0-85032694901
dc.identifier.urihttp://hdl.handle.net/11449/175424
dc.language.isoeng
dc.relation.ispartofBrazilian Dental Science
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectDentina
dc.subjectDureza
dc.subjectMinerais
dc.subjectRemineralização
dc.titleDeterminação de elementos químicos e da microdureza transversal da dentina esclerótica humanapt
dc.title.alternativeDetermination of chemical elements and cross-section hardness of sclerotic darkened human dentinen
dc.typeArtigo

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