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目的调查不同饮水含氟量与氟斑牙发病关系,探讨实施改水降氟预防饮水型氟中毒的可行性。方法选择河北省承德市4个不同方位氟病村,调查8～12岁儿童氟斑牙患病率、饮水含氟量、尿含氟量。结果 4个不同方位的病村8～12儿童氟斑牙患病率及尿氟含量与饮水含氟量成正比。结论饮水含氟量低于1.0mg/L是防治饮水型氟中毒的关键。
Objective To investigate the relationship between fluoride content in drinking water and the incidence of dental fluorosis, and to explore the feasibility of using water to reduce fluoride in prevention of drinking water fluorosis. Methods Four different orientations of fluorosis village were selected in Chengde City, Hebei Province. The prevalence of dental fluorosis, fluoride in drinking water and urine fluoride in children aged 8 ~ 12 years were investigated. Results The prevalence of dental fluorosis and urinary fluoride content in 8 ~ 12 children in 4 different directions were directly proportional to the fluoride content in drinking water. Conclusion The drinking water fluoride content less than 1.0mg / L is the key to prevention and treatment of drinking water fluorosis.