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为了动态观察降氟改水防治地方性氟中毒的效果，１９９８年度对郸城县丁寨村省级地氟病监测点进行了病情监测，结果表明：该监测点降氟改水１２年，由于干部群众对地氟病认识不够，工程管理欠佳，低氟水的饮用出现中断，８－１２岁儿童氟斑牙患病率仍高达３９．８６％，尿氟几何均值为２．３５ｍｇ／Ｌ，均高于病区划分标准。提示：为确保地氟病防治效果的长期稳定，在降氟改水的前提下，必须加强工程管理，加大健康教育宣传力度，确保降氟改水效益的正常发挥。
In order to dynamically observe the effect of fluoride-lowering and water-reforming on prevention and control of endemic fluorosis, the monitoring of endemic fluorosis at Dingzhai Village in Dancheng County in 1998 was conducted. The results showed that: Cadres and the public do not know enough about fluorosis, poor project management, drinking low-fluorine water appears interrupted, children aged 8-12 dental fluorosis prevalence rate is still as high as 39.86%, urinary fluoride geometric mean 2.35mg / L , Are higher than the ward division standards. Tip: In order to ensure the long-term stability of the prevention and treatment of endemic fluorosis, under the premise of reducing fluoride by changing water, we must strengthen project management and intensify publicity on health education so as to ensure the normal use of fluoride reduction benefits.