云南省洱源县温泉型氟中毒流行病学调查

目的了解洱源县地方性氟中毒的病情及改水降氟效果,为防治研究提供科学依据。方法采用横断面调查,8￣12岁儿童氟斑牙采用Dean氏法检查,饮水氟、儿童尿氟均采用氟离子选择电极法进行检测。结果在调查的26个自然村中,儿童氟斑牙总患病率为44.6%,儿童尿氟中位数为1.0mg/L,温泉水平均含氟5.18mg/L。结论洱源县地方性氟中毒病情未得到有效控制,应加强改水降氟的防病措施。

Epidemiological investigation of endemic fluorosis of the hot spring type in Eryuan County, Yunnan Province

Objective To investigate the conditions of endemic fluorosis and the preventive effect of altering water sources on lowering fluoride level, and to provide evidences for the formulation of scientific strategies in prevention and control. Methods Cross-sectional study methods were adopted. Dental fluorosis of children were examined by Dean's Index. The fluoride content in drinking water and in the urine of children was determined by fluoride selective ion electrode. Results In villages surveyed of the hot spring type disease areas, the prevalence rate of dental fluorosis of childen was 44.6%. The median of fluoride content in the urine of children was 1.0 mg/L. The average fluoride content of hot spring was 5.18 mg/L. Conclusions The preventive effect of epidemic fluorosis is not obvious, thus, defluorided water must be adopted widely.