Publication:
Higher Fluorosis Severity Makes Enamel Less Resistant to Demineralization

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col.comunidadvinculadaComunidad odontológica colombianaes_CO
col.contrato0442-2012es_CO
col.date.proyecto2016-12
col.programa.colcienciasPrograma de Ciencia y Tecnología e Innovación en Saludes_CO
col.tipo.espArtículos de investigaciónes_CO
dc.audienceProfesoreses_CO
dc.audienceInvestigadoreses_CO
dc.coverage.spatialColombiaes_CO
dc.creatorMarín Gallón, Lina María
dc.creatorCury, Jaime Aparecido
dc.creatorAndaló Tenuta, Livia Maria
dc.creatorCastellanos, Jaime Eduardo
dc.creatorMartignon Biermann, Stefania
dc.creator.corporativoUniversidad El Bosque - UNICA, Caries Research Unites_CO
dc.creator.corporativoIndiana University School of Dentistry, IUSDes_CO
dc.creator.mailmartignonstefania@unbosque.edu.coes_CO
dc.date.accessioned2019-03-26T15:00:55Z
dc.date.available2019-03-26T15:00:55Z
dc.date.embargoEndinfo:eu-repo/date/embargoEnd/2024-01-31es_CO
dc.date.issued2016
dc.description.abstractFluorotic teeth could either be more resistant or more susceptible to the caries process than sound ones due to their higher enamel fluoride concentration and higher porosity (subsurface hypomineralization), respectively; however, there is no consensus on this subject. In this study, a total of 49 human unerupted third molars presenting Thylstrup and Fejerskov (TF) fluorosis scores 0–4 were used. Two enamel slabs were obtained from each tooth. The rest of the tooth crown was powdered, and the enamel was separated from the dentine. In purified powdered enamel, the calcium (Ca), inorganic phosphate (P i ), and fluoride (F) concentrations were determined. The F concentration gradient throughout the enamel and in the enamel, volume was determined in one slab. The other enamel slab was isolated with acid-resistant varnish, subjecting the exposed enamel surface half to a pH-cycling model to evaluate its demineralization resistance and to calculate the demineralization area. The nonexposed surface was used to determine the natural hypomin eralization area found in fluorotic enamel and normalize the demineralization data. The hypomineralization and demineralization areas were assessed by cross-sectional microhardness. For statistical analyses, the data for TF1 and 2, and for TF3 and 4 were pooled. Concentrations of powered enamel Ca and Pi were not significantly different (p > 0.05) among groups TF0, TF1–2 and TF3–4, but a higher F concentration was found in fluorotic enamel (p < 0.05). Highly fluorotic teeth (TF3–4) presented a greater hypomineralization subsurface area and demonstrated lower demineralization resistance than sound enamel (p < 0.05). The findings suggest that a higher severity of fluorosis makes enamel less resistant to the caries process due to its greater subsurface mineral area exposed to demineralization and deeper acid diffusion through the enamel.es_CO
dc.description.isprojectnoes_CO
dc.description.projectid1308-569-34427es_CO
dc.description.projectnameModelo de caracterización ambiental, epidemológica, clínico-histológica e inorgánica de la fluorosis dental en niñoses_CO
dc.description.sponsorshipDepartamento Administrativo de Ciencia, Tecnología e Innovación [CO] Colcienciases_CO
dc.formatpdfes_CO
dc.format.extent7 páginases_CO
dc.identifier.bibliographicCitationContiene 30 referencia bibliográfica. Véase documento adjuntoes_CO
dc.identifier.doi10.1159/00044727
dc.identifier.urihttp://repositorio.colciencias.gov.co/handle/11146/34141
dc.language.isoenges_CO
dc.relation.ispartofModelo de caracterización ambiental, epidemiológica, clínico-histológica e inorgánica de la fluorosis dental en niños. La publicación completa está disponible en : <a href="http://repositorio.colciencias.gov.co:80/handle/11146/34140" target="blank">http://repositorio.colciencias.gov.co:80/handle/11146/34140</a>es_CO
dc.rightsinfo:eu-repo/semantics/embargoedAccesses_CO
dc.sourceCaries Research 2016;50:407-413es_CO
dc.subject.lembEsmaltees_CO
dc.subject.lembDental caries resistancees_CO
dc.subject.lembDental enameles_CO
dc.subject.lembDental fluorosises_CO
dc.subject.lembFluoridees_CO
dc.subject.lembHypomineralizationes_CO
dc.subject.spinesCaries dentales_CO
dc.subject.spinesFlour -- Investigacioneses_CO
dc.titleHigher Fluorosis Severity Makes Enamel Less Resistant to Demineralizationes_CO
dc.typeArtículo científicoes_CO
dc.type.driverinfo:eu-repo/semantics/articlees_CO
dc.type.hasversioninfo:eu-repo/semantics/publishedVersiones_CO
dspace.entity.typePublication

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