【摘要】 目的　为了解和掌握我省温泉饮水型氟中毒病区改水工程使用情况及其降氟效果。　方法　运用流行病学方法对温泉饮水型氟中毒病区进行了调查。　结果　本次调查 8～ 12岁氟斑牙患病率较改水前均有显著下降 ,除资兴汤市为 41.67%外 ,其余各点均下降到 3 0 %以下 ,饮水氟含量各点均小于 1mg/ L ,8～ 12岁儿童学生尿氟也有明显下降。　结论　通过改换低氟水源 ,就能达到预防地氟病的目的更多还原

【Abstract】 Objective To clarify the state of drinking water supply installation and the Fluoride reduction effect in warm-spring type areas of Hunan province. Methods Epidemiologic methods were adopted. Result Dental fluorosis prevalence rate in 8-12-year-old children was reducd to 30%. Except for Tangshi of Zixing,fluoride concentration in water were all lower than 1mg/L. Urine fluoride of 8 to 12 year old chidren has decreased too. Conclusion Reducing fluoride by improving the quality of drinking water source can prevent endemic fluorosis.更多还原