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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampLelis, Isabel Maria Porto-
dc.typeArtigopt_BR
dc.titleSynchrotron X-ray diffraction characterization of healthy and fluorotic human dental enamelpt_BR
dc.contributor.authorColaço, M.V.-
dc.contributor.authorBarroso, R.C.-
dc.contributor.authorPorto, I.M.-
dc.contributor.authorGerlach, R.F.-
dc.contributor.authorCosta, F.N.-
dc.contributor.authorBraz, D.-
dc.contributor.authorDroppa, R.-
dc.contributor.authorde Sousa, F.B.-
dc.subjectHidroxiapatitapt_BR
dc.subjectEsmalte dentáriopt_BR
dc.subject.otherlanguageHydroxyapatitept_BR
dc.subject.otherlanguageDental enamelpt_BR
dc.description.abstractWith the introduction of fluoride as the main anticaries agent used in preventive dentistry, and perhaps an increase in fluoride in our food chain, dental fluorosis has become an increasing world-wide problem. Visible signs of fluorosis begin to become obvious on the enamel surface as opacities, implying some porosity in the tissue. The mechanisms that conduct the formation of fluorotic enamel are unknown, but should involve modifications in the basic physical-chemistry reactions of demineralization and remineralisation of the enamel of the teeth, which is the same reaction of formation of the enamel's hydroxyapatite (HAp) in the maturation phase. The increase of the amount of fluoride inside of the apatite will result in gradual increase of the lattice parameters. The aim of this work is to characterize the healthy and fluorotic enamel in human tooth using Synchrotron X-ray diffraction. All the scattering profile measurements were carried out at the X-ray diffraction beamline (XRD1) at the Brazilian Synchrotron Light Laboratory-LNLS, Campinas, Brazil. X-ray diffraction experiments were performed both in powder samples and polished surfaces. The powder samples were analyzed to obtain the characterization of a typical healthy enamel pattern. The polished surfaces were analyzed in specific areas that have been identified as fluorotic ones. X-ray diffraction data were obtained for all samples and these data were compared with the control samples and also with the literature data.pt_BR
dc.relation.ispartofRadiation physics and chemistry: the journal for radiation physics, radiation chemistry and radiation processingpt_BR
dc.relation.ispartofabbreviationRadiat. phys. chem.pt_BR
dc.publisher.cityOxfordpt_BR
dc.publisher.countryReino Unidopt_BR
dc.publisherElsevierpt_BR
dc.date.issued2012-
dc.date.monthofcirculationOct.pt_BR
dc.language.isoengpt_BR
dc.description.volume81pt_BR
dc.description.issuenumber10pt_BR
dc.description.firstpage1578pt_BR
dc.description.lastpage1585pt_BR
dc.rightsFechadopt_BR
dc.sourceScopuspt_BR
dc.identifier.issn0969-806Xpt_BR
dc.identifier.doi10.1016/j.radphyschem.2012.05.011pt_BR
dc.identifier.urlhttps://www.sciencedirect.com/science/article/pii/S0969806X12002198pt_BR
dc.date.available2020-09-04T19:01:16Z-
dc.date.accessioned2020-09-04T19:01:16Z-
dc.description.provenanceSubmitted by Bruna Maria Campos da Cunha (bcampos@unicamp.br) on 2020-09-04T19:01:16Z No. of bitstreams: 0. Added 1 bitstream(s) on 2021-01-04T15:12:44Z : No. of bitstreams: 1 2-s2.0-84863850818.pdf: 1111634 bytes, checksum: b69502e178a1a62873496dfa20c925d2 (MD5)en
dc.description.provenanceMade available in DSpace on 2020-09-04T19:01:16Z (GMT). No. of bitstreams: 0 Previous issue date: 2012en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/348767-
dc.contributor.departmentSem informaçãopt_BR
dc.contributor.unidadeFaculdade de Odontologia de Piracicabapt_BR
dc.subject.keywordEnamelpt_BR
dc.subject.keywordFluorapatitept_BR
dc.subject.keywordToothX-Ray diffractionpt_BR
dc.identifier.source2-s2.0-84863850818pt_BR
dc.creator.orcidSem informaçãopt_BR
dc.type.formArtigopt_BR
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