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dc.contributor.authorSaiani, Regina Aparecida-
dc.contributor.authorPorto, Isabel Maria-
dc.contributor.authorMarcantonio Júnior, Elcio-
dc.contributor.authorCury, Jaime Aparecido-
dc.contributor.authorde Sousa, Frederico Barbosa-
dc.contributor.authorGerlach, Raquel Fernanda-
dc.identifier.citationArchives of Oral Biology. Oxford: Pergamon-Elsevier B.V. Ltd, v. 54, n. 11, p. 1008-1015, 2009.-
dc.description.abstractThe morphological characterization of fluorotic rat incisor enamel was carried out. Experimental adult animals received drinking water with 45 mg F/L of fluoride, and the control group received distilled water. Fluoride concentrations found in the control and fluorosis groups were 0.04 and 0.09 mu g/mL (plasma), 0.26 and 0.66 mu g/mg (whole tibia), and 0.24 and 2.3 mu g/mg (tibia surface), with P <= 0.001 for all comparisons between the groups. A succession of white and pigmented bands was observed in the fluorotic rat incisors. Under polarizing light microscopy, cross-sections of superficial areas corresponding to the white bands (from the surface to similar to 20 mu m) showed high positive birefringence. These fluorotic lesions also exhibited the lowest resistance to superficial acid etching. No morphological differences in inner enamel were seen under scanning electron microscopy. In fluorotic enamel, only the surface layer related to the white areas presented lower birefiringence compared with the enamel of control teeth and the surface layer of the pigmented areas (normal ones) of fluorotic teeth. In conclusion, the white bands of fluorotic rat enamel represent hypomineralized superficial areas and are not subsurface lesions. The detailed description of these lesions is important to understand dental fluorosis. (C) 2009 Elsevier Ltd. All rights reserved.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.publisherPergamon-Elsevier B.V. Ltd-
dc.sourceWeb of Science-
dc.subjectPolarized light microscopyen
dc.titleMorphological characterization of rat incisor fluorotic lesionsen
dc.contributor.institutionUniversidade de São Paulo (USP)-
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade Federal da Paraíba (UFPB)-
dc.description.affiliationFORP USP, Dent Sch Ribeirao Preto, Dept Morfol Estomatol & Fisiol, BR-14040904 Ribeirao Preto, SP, Brazil-
dc.description.affiliationFORP USP, Dent Sch Ribeirao Preto, Dept Pediat Clin Prevent & Soc Dent, BR-14040904 Ribeirao Preto, SP, Brazil-
dc.description.affiliationFOP UNICAMP, Dent Sch Piracicaba, Dept Morphol, Piracicaba, SP, Brazil-
dc.description.affiliationSão Paulo State Univ UNESP, Dent Sch Araraquara, Div Periodont, Dept Diagnost & Surg, Araraquara, SP, Brazil-
dc.description.affiliationFOP UNICAMP, Dent Sch Piracicaba, Dept Biochem, Piracicaba, SP, Brazil-
dc.description.affiliationUniversidade Federal da Paraíba (UFPB), Hlth Sci Ctr, Dept Morphol, Joao Pessoa, Paraiba, Brazil-
dc.description.affiliationUnespSão Paulo State Univ UNESP, Dent Sch Araraquara, Div Periodont, Dept Diagnost & Surg, Araraquara, SP, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofArchives of Oral Biology-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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