In vivo studies on lead content of deciduous teeth superficial enamel of preschool children

dc.creatorGomes, VE
dc.creatorDe Sousa, MDLR
dc.creatorBarbosa, F
dc.creatorKrug, FJ
dc.creatorSaraiva, MDCP
dc.creatorCury, JA
dc.creatorGerlach, RF
dc.date2004
dc.date38412
dc.date2014-11-18T04:06:42Z
dc.date2015-11-26T17:46:25Z
dc.date2014-11-18T04:06:42Z
dc.date2015-11-26T17:46:25Z
dc.date.accessioned2018-03-29T00:28:57Z
dc.date.available2018-03-29T00:28:57Z
dc.identifierScience Of The Total Environment. Elsevier Science Bv, v. 320, n. 1, n. 25, n. 35, 2004.
dc.identifier0048-9697
dc.identifierWOS:000220240700003
dc.identifier10.1016/j.scitotenv.2003.08.013
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/69444
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/69444
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/69444
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1288483
dc.descriptionThe amount of lead in the superficial enamel of deciduous teeth from 4- and 5-year-old children was determined by means of an enamel biopsy followed by lead analysis by graphite furnace atomic absorption spectrometry. Children examined in this study (n = 329) attended public preschools in the city of Piracicaba, SP, Brazil. The selection of preschools was based on geographical location: some were located in an industrial area of the city, whereas others were located in an area devoid of industries. The objectives of this study were (1) to test whether enamel biopsies were an appropriate method for lead content population screening in young children; (2) to verify the lead content of superficial enamel of preschool children's deciduous teeth and to compare the results obtained from children exposed to different environments; (3) to analyze how biopsy depth correlated with lead content and affected comparisons between groups. An adhesive tape with a central hole (diameter = 1.6 mm) was placed on one of the upper central incisors. Five microliters of 1.6 mol l(-1) HCl in 70% glycerol (v/v) were applied to this area for 20 s, followed by a rinse with 5-mul ultrapurified water for 10 s. It was shown that the technique was feasible for population studies on young children. The lead concentration in enamel biopsies from the industrial area children (median: 169 ppm Pb) was significantly higher than that from the children living far from industries (118.1 ppm Pb) (P < 0.0001). Analysis of the data showed that biopsies deeper than 3.9 mum gave more reliable results for comparisons between groups. To our knowledge, this study is the first to use an enamel microbiopsy to characterize a large sample of young children in vivo for lead monitoring in teeth. (C) 2003 Elsevier B.V. All rights reserved.
dc.description320
dc.description1
dc.description25
dc.description35
dc.languageen
dc.publisherElsevier Science Bv
dc.publisherAmsterdam
dc.publisherHolanda
dc.relationScience Of The Total Environment
dc.relationSci. Total Environ.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectheavy metals
dc.subjectlead
dc.subjectenamel
dc.subjectbiopsy
dc.subjectenvironment
dc.subjectepidemiology
dc.subjectBrazil
dc.subjectdeciduous teeth
dc.subjectpreschool children
dc.subjectHuman Surface Enamel
dc.subjectCadmium Content
dc.subjectExposure
dc.subjectTooth
dc.subjectBiopsy
dc.titleIn vivo studies on lead content of deciduous teeth superficial enamel of preschool children
dc.typeArtículos de revistas


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