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dc.contributor.authorPetta, Thais de Mendonça-
dc.contributor.authorGomes, Yasmin do Socorro Batista de Lima-
dc.contributor.authorEsteves, Renata Antunes-
dc.contributor.authorFaial, Kelson do Carmo Freitas-
dc.contributor.authorCouto, Roberto Souza D'Almeida-
dc.contributor.authorSilva, Cecy Martins-
dc.date.accessioned2017-11-28T13:10:12Z-
dc.date.available2017-11-28T13:10:12Z-
dc.date.issued2017-
dc.identifier.citationPETTA, Thais de Mendonça et al. Chemical composition and microhardness of human enamel treated with fluoridated whintening agents. A study in situ. Open Dentistry Journal, v. 11, p. 34-40, Jan. 2017.pt_BR
dc.identifier.issn1874-2106-
dc.identifier.urihttp://patua.iec.gov.br//handle/iec/2885-
dc.description.abstractBackground: Dental whitening has been increasingly sought out to improve dental aesthetics, but may cause chemical and morphological changes in dental enamel surfaces. Objective: Assess in situ the effects of high-concentration hydrogen peroxide with and without fluoride on human dental enamel using the ion chromatography test (IC) and the Knoop hardness test (KHN). Material and Methods: Nineteen enamel specimens were prepared using third human molars. These specimens were fixed on molars of volunteers and were divided into groups: OP38-Opalescence Boost PF38%, PO37-Pola Office 37.5% and CO-Control group. For chemical analysis (n= 3), the dentin layer was removed, keeping only the enamel, which was subjected to acidic digestion by microwave radiation. It was necessary to perform sample dilutions for the elements fluorine (F), calcium (Ca) and phosphorus (P) for quantification using the IC test. The KHN (n= 5) was performed before and after the treatments. Five indentations were made, separated by 100 µm, for each specimen using a load of 25 gf for 5 seconds in the microdurometer. The data were analyzed using ANOVA with a 5% significance level. Results: The OP38 group had the largest concentrations of F, Ca and P ions. The PO37 group showed the lowest concentrations of F and Ca ions. The average KHN was not significantly different between the OP38 and PO37 groups. Conclusion: Enamel whitened with hydrogen peroxide containing fluoride had greater concentrations of F, Ca and P ions. The presence of fluoride in the whitening agent did not influence the enamel microhardness.pt_BR
dc.language.isoengpt_BR
dc.publisherBentham Openpt_BR
dc.rightsAcesso Abertopt_BR
dc.titleChemical composition and microhardness of human enamel treated with fluoridated whintening agents. A study in situpt_BR
dc.typeArtigopt_BR
dc.subject.decsPrimaryClareadores Dentários / efeitos adversospt_BR
dc.subject.decsPrimaryEsmalte Dentário / químicapt_BR
dc.subject.decsPrimaryEsmalte Dentário / efeitos de drogaspt_BR
dc.subject.decsPrimaryPeróxido de Hidrogênio / efeitos adversospt_BR
dc.subject.decsPrimaryFluoretos / efeitos adversospt_BR
dc.subject.decsPrimaryDente Molarpt_BR
dc.subject.decsPrimaryTeste de Materiaispt_BR
dc.subject.decsPrimaryCromatografia por Troca Iônica / métodospt_BR
dc.subject.decsPrimaryTestes de Dureza / métodospt_BR
dc.creator.affilliationFederal University of Para. Faculty of Dentistry. Belém, PA, Brazil.pt_BR
dc.creator.affilliationFederal University of Para. Faculty of Dentistry. Belém, PA, Brazil.pt_BR
dc.creator.affilliationFederal University of Para. Faculty of Dentistry. Belém, PA, Brazil.pt_BR
dc.creator.affilliationMinistério da Saúde. Secretaria de Vigilância em Saúde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.pt_BR
dc.creator.affilliationFederal University of Para. Faculty of Dentistry. Belém, PA, Brazil.pt_BR
dc.creator.affilliationFederal University of Para. Faculty of Dentistry. Belém, PA, Brazil.pt_BR
dc.identifier.doi10.2174/1874210601711010034-


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