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目的了解连云港市降氟改水措施对氟病区村8～12岁儿童氟斑牙患病率的影响。方法对连云港市部分已改水的氟病区村8～12岁儿童氟斑牙患病情况进行调查,并检测居民饮水氟含量。结果 (1)8～12岁儿童氟斑牙患病率由改水前的74.91%降至44.26%,差异有统计学意义(P<0.05);(2)降氟改水工程一直正常运行的氟病区村儿童氟斑牙患病率为23.32%(<30.00%),达到了地方性氟中毒病区控制标准要求;(3)居民饮水氟含量均值为0.71 mg/L,范围为0.19～3.04 mg/L。结论连云港市降氟改水有一定成效,病情呈现下降趋势但未得到完全控制,需要加强对降氟改水工程的管理与维护,确保有效控制病情。
Objective To understand the effect of fluoride reduction and water diversion in Lianyungang city on the prevalence of dental fluorosis in children aged 8 ~ 12 years in Fufang district. Methods The prevalence of dental fluorosis in children aged 8 ~ 12 years old in Fuyifang district of Lianyungang City was investigated. The fluoride content in drinking water was also measured. Results (1) The prevalence of dental fluorosis in children aged 8 ~ 12 years decreased from 74.91% before water change to 44.26%, the difference was statistically significant (P <0.05); (2) The prevalence rate of dental fluorosis in children with fluorosis was 23.32% (<30.00%), which met the control criteria of endemic fluorosis area; (3) The average fluoride content in drinking water was 0.71 mg / L in the range of 0.19 ~ 3.04 mg / L. Conclusions Lianyungang City has some effects in reducing fluoride and improving water quality. The condition of the disease shows a downward trend but it is not completely controlled. Therefore, it is necessary to strengthen the management and maintenance of fluoride reduction and water diversion project to ensure effective control of the disease.