Chemical composition of enamel and dentine in primary teeth in children from Thailand exposed to lead.
Enamel and dentine in teeth of children with high blood levels of lead were analyzed by means of secondary ion mass spectrometry (SIMS) and X-ray micro-analyses (XRMA) and compare with teeth from children with low blood levels of lead. The SIMS analysis revealed detectable levels of Pb in dentine close to the pulp. The XRMA analyses could not detect any lead. There were no differences found in lead level in enamel of high lead level exposed teeth from low level exposed. The results confirm that children with high blood levels of lead have an uptake of lead in dentine close to the pulp.
Youravong
Nattaporn
N
Department of Preventive Dentistry, Faculty of Dentistry, Prince of Songkla University, Songkhla, Thailand.
Teanpaisan
Rawee
R
Norén
Jörgen G
JG
Robertson
Agneta
A
Dietz
Wolfram
W
Odelius
Hans
H
Dahlén
Gunnar
G
D002648:Child; D003743:Dental Enamel / Q000737:chemistry*; D003804:Dentin / Q000737:chemistry*; D004577:Electron Probe Microanalysis; D004781:Environmental Exposure / Q000032:analysis*; D004785:Environmental Pollutants / Q000032:analysis* / Q000097:blood / Q000493:pharmacokinetics; D006801:Humans; D007854:Lead / Q000032:analysis* / Q000097:blood / Q000493:pharmacokinetics; D013785:Thailand; D014018:Tissue Distribution; D014094:Tooth, Deciduous / Q000737:chemistry*
D004785:Environmental Pollutants; D007854:Lead