Morphology of enamel in primary teeth from children in Thailand exposed to environmental lead

被引:17
|
作者
Youravong, N
Chongsuvivatwong, V
Teanpaisan, R
Geater, AF
Dietz, W
Dahlén, G
Norén, JG
机构
[1] Univ Gothenburg, Dept Pedodont, Fac Odontol, SE-40530 Gothenburg, Sweden
[2] Prince Songkla Univ, Fac Med, Epidemiol Unit, Hat Yai, Thailand
[3] Prince Songkla Univ, Dept Stomatol, Fac Dent, Hat Yai, Thailand
[4] Univ Jena, Ctr Electron Microscopy, D-6900 Jena, Germany
[5] Univ Gothenburg, Dept Oral Microbiol, Fac Odontol, Gothenburg, Sweden
关键词
lead; primary teeth; enamel; hypomineralization; enamel hypoplasia;
D O I
10.1016/j.scitotenv.2004.12.074
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Lead is one of the major environmental pollutants and a health risk. Dental hard tissues have a capacity to accumulate lead from the environment. Eighty exfoliated primary teeth were collected from children residing around a shipyard area in southern Thailand, known for its lead contamination. The morphology of the enamel was examined by polarized light microscopy (PLM), microradiography (MRG), and scanning electron microscopy (SEM). The specimens derived from two groups of children, one group with high blood levels of lead (57 teeth) and one group having low blood levels of lead (23 teeth). The enamel irrespective of group appeared normal. However, in a majority of the specimens the enamel surface appeared hypornineralized, which was confirmed in SEM. No morphological changes connected to lead in blood could be found. The hypornineralized surface zone could possibly be attributed to an acid oral environment. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:73 / 81
页数:9
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