摘要
目的动态观察改水降氟病情防治效果。方法水氟、尿氟测定均为电极法；氟斑牙诊断为Ｄｅａｎ＇ｓ法。结果该监测点１９８３年改饮低氟水，水氟含量由改水前的６．０ｍｇ／Ｌ降至改水后的０．２６ｍｇ／Ｌ，水氟含量稳定，供水从未间断。改水后８～１２岁儿童氟斑牙患病率呈现逐年下降趋势，至第９年患病率由改水前的９８．１８％降至为病区与非病区临界值（３０％），改水后１０～１４年间氟斑牙患病率均已稳定在６．９０％以下，且年度已无明显差异（Ｐ＞０．２５），表明该监测点病情得到有效控制，且达到稳定控制状态。结论坚持长年饮用低氟水。
Objective To dynamicly observe the preventive effect of lowering fluoride level in drinking water by altering water resources.Methods Fluoride concentrations in drinking water and urine are determined by ion selective electrode method;The diagnostic method of dental fluorosis is Deans's.Results People in the surveyed village have been drinking fluoride low water since 1983,fluoride concentration drops from 6.0mg/L,the original level to 0.26mg/L and it remains stable and the water supply has never been interrupted.The incidence rate of dental fluorosis in children aged 8￣12 dropped gradually year by year after fluoride reduction in drinking water.In the ninth year,the incidence of dental fluorosis dropped from 98.18% to 30%,the critical value between the diseased area and the non diseased area.10￣14 years after the fluoride reduction process,the incidence rate has always been stable and lower than 6.9% and there are no significant differences among years (P>0.25).It shows that the state of the dental fluorosis in surveyed village has been effectively and steadily controled.Conclusions Keep on drinking fluoride low water,the water induced fluorosis will be effectively controled.
出处
《中国地方病学杂志》
CAS
CSCD
1999年第1期36-38,共3页
Chinese Jouranl of Endemiology
关键词
改水
降氟
氟斑牙
患病率
Altering water resources to lower fluoride level Dental fluorosis Incidence rate
