Anatomical Variations In Primary Teeth Microelements With Known Differences In Lead Content By Micro-synchrotron Radiation X-ray Fluorescence (μ-srxrf) - A Preliminary Study.

dc.creatorde Souza-Guerra, Carolina
dc.creatorBarroso, Regina Cely
dc.creatorde Almeida, Andre Pereira
dc.creatorPeixoto, Iza Teixeira Alves
dc.creatorMoreira, Silvana
dc.creatorde Sousa, Frederico Barbosa
dc.creatorGerlach, Raquel Fernanda
dc.date2014-Apr
dc.date2015-11-27T13:42:09Z
dc.date2015-11-27T13:42:09Z
dc.date.accessioned2018-03-29T01:20:09Z
dc.date.available2018-03-29T01:20:09Z
dc.identifierJournal Of Trace Elements In Medicine And Biology : Organ Of The Society For Minerals And Trace Elements (gms). v. 28, n. 2, p. 186-93, 2014-Apr.
dc.identifier1878-3252
dc.identifier10.1016/j.jtemb.2014.01.007
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/24656317
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/201241
dc.identifier24656317
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1301474
dc.descriptionShed teeth have been proposed as trace element biomarkers. This study determined variations in the spatial distribution of Ca, K, Zn, Pb, Mn, Cu, and Sr in four anatomical locations: superficial enamel (SE, 0-10μm), subsuperficial enamel (SSE, 10-30μm), primary dentin (PD), and secondary dentin (SD). Five primary incisors were analyzed by micro Synchrotron Radiation X-Ray Fluorescence (μ-SRXRF). Two teeth had low concentrations of lead in the SE (<250μg/g), while three contained very high lead concentrations in the SE (>2000μg/g). Teeth were sliced, and five spot measurements (20μm beam diameter) were accomplished in each location. The data are shown as absolute values and as the ratio between the different elements and Ca. The distribution of K was close to that of Ca. Zn was the third most abundant element, with the highest levels being found in the SE and SD and low levels detected in the PD. Increasing Sr levels were found progressing from the enamel to the dentin, with the highest levels being found in the SD, a distribution that was unique. Pb, Mn, and Cu exhibited a similar trend, with higher signals for these elements detected in the SE. This study provides preliminary data on the heterogeneous distribution of different elements in the tooth, highlighting the importance of the first 10μm of the SE for determination of some elements, such as Zn, Pb, Mn, and Cu.
dc.description28
dc.description186-93
dc.languageeng
dc.relationJournal Of Trace Elements In Medicine And Biology : Organ Of The Society For Minerals And Trace Elements (gms)
dc.relationJ Trace Elem Med Biol
dc.rightsfechado
dc.rightsCopyright © 2014 Elsevier GmbH. All rights reserved.
dc.sourcePubMed
dc.subjectDental Enamel
dc.subjectDentin
dc.subjectHumans
dc.subjectIncisor
dc.subjectLead
dc.subjectSpectrometry, X-ray Emission
dc.subjectSynchrotrons
dc.subjectTooth Crown
dc.subjectTooth, Deciduous
dc.subjectTrace Elements
dc.subjectDentin
dc.subjectEnamel
dc.subjectPrimary Teeth
dc.subjectμ-srxrf
dc.titleAnatomical Variations In Primary Teeth Microelements With Known Differences In Lead Content By Micro-synchrotron Radiation X-ray Fluorescence (μ-srxrf) - A Preliminary Study.
dc.typeArtículos de revistas


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