Abstract: 【Objective】 To investigate the prevalence of endemic fluorosis in Hancheng district, and to provide scientific basis for the prevention and cure of endemic fluorosis in fulture. 【Methods】 The fluoride content in drinking-water was determined by the fluoride selective ion electrode in the ruins of an ancient city in Hancheng district. The dental teeth of children aged 8～12 years at school was examined with Dean's index The fluoride content in drinking water was detected with F-ion selective electrode. 【Results】 The dental fluorosis of 457 children aged 8～12 years in 11 villages in Hancheng district were examined the total detectable was 177. The detectable rate of dental fluorosis of children aged 8～12 years was 16.4 %, tiny patients 57(the prevalence rate was 12.2%), light patients 18 (the prevalence rate was 3.9 %). No moderate and severe patients were oberserved. 【Conclusions】 The total detectable rate of children dental fluorosis in Hancheng district is 16.4%, in order to maintain prefect ancient relics in Hancheng district, meanwhile, to improve the present situation of manage and usage for the well of control fluorosis. The most efficient method to deal with a situation preventing drinking water fluorosis is altering water source in order that advance the work of control fluorosis.

Key words: ancient Hancheng relics, high level fluoride area, children, dental fluorosis

摘要： 【目的】 了解西安市古汉城遗址区儿童地方性氟中毒现状,为饮水改造工程的实施提供科学依据。 【方法】 对古汉城遗址内11个村集中式饮用的井水用氟离子选择电极法对水氟含量进行测定,并用Dean氏法检查8~12岁儿童氟牙症患病情况。 【结果】 在汉城乡11个高氟村,检查8～12周岁儿童457人,检出氟牙症患者75人,检出率为16.4%,极轻患者57人(检出率为12.2%),轻度患者18人(检出率为3.9%),未见中度和重度氟牙症出现。 【结论】 古汉城遗址内8~12岁儿童氟牙症检出率16.4%。在保存古汉城遗址完整的同时,政府应加大力度进行饮水改造措施的实施,从根本上解决遗址内居民的饮水状况,从而有效地控制地方性氟中毒的流行。

关键词: 汉城遗址, 高氟区, 儿童, 氟牙症