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dc.contributor.authorMarsillac, Mirian de Waele Souchois de-
dc.contributor.authorDelbem, Alberto Carlos Botazzo-
dc.contributor.authorVieira, Ricardo de Sousa-
dc.identifier.citationBrazilian Journal of Oral Sciences, v. 7, n. 24, p. 1507-1511, 2008.-
dc.description.abstractA cross-sectional microhardness (CSMH) test was carried out in human dental enamel exposed to a demineralizing solution in order to evaluate two different times of indentation in sound tissue and artificially induced caries. Twenty caries-free extracted human molars had one of their smooth surfaces sectioned and the enamel surface was isolated with nail polish except for an area of 6 mm2. These specimens were submitted to artificially induced enamel caries on a lactate buffer containing 0.1 ppm fluoride (F) during 28 days. All specimens were bisected to create groups A and B in which CSMH test was performed employing a Knoop indenter with a 25g load for 5 or 10 s, respectively. Student's paired t-test (p<0.05) was used to determine statistically significant differences between group A and B in 7 depths. There were no significant differences between any of the analyzed depths. Since the present experiment showed no significant difference when comparing indentations made with a 25 g load during either 5 or 10 s in different depths, this method can be used with either one of the time intervals tested without compromising a CSMH test on artificially demineralized human enamel.en
dc.subjectDental enamel-
dc.subjectHardness tests-
dc.subjectTooth demineralization-
dc.titleEffect of time in hardness test on artificially demineralized human dental enamelen
dc.contributor.institutionUniversidade do Estado do Rio de Janeiro (UERJ)-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade Federal de Santa Catarina (UFSC)-
dc.description.affiliationDepartment of Community and Preventive Dentistry State University of Rio de Janeiro, Rio de Janeiro-
dc.description.affiliationDepartment of Dentistry Dental School of Araçatuba State University of São Paulo, São Paulo-
dc.description.affiliationDepartment of Pediatric Dentistry Dental School Federal University of Santa Catarina, Santa Catarina-
dc.description.affiliation, Boulevard 28 de Setembro, 157 Vila Izabel, Rio de Janeiro - RJ 20.551-030-
dc.rights.accessRightsAcesso aberto-
dc.relation.ispartofBrazilian Journal of Oral Sciences-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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