摘要
目的 :观察广东省汕头市饮水型高氟区改水后氟含量与 8～ 15岁在校学生氟斑牙患病情况。方法 :采用1981年中央地办室推荐的氟斑牙分类标准对汕头市高氟区改水后 8～ 15岁在校学生氟斑牙患病情况进行调查 ,并以氟离子选择电极法对高氟区水样进行测定。结果 :改水前汕头市水氟含量 (1.0 0 - 11.6 0 ) mg/ L ,8～ 15岁儿童氟斑牙患病率 6 1.84 % ;改水后水氟含量 (0 .0 3- 0 .6 2 ) mg/ L ,患病率 35 .4 8% ;改水前后氟斑牙患病率差异有极显著性意义(χ2 =6 5 96 7,P<0 .0 0 5 )。结论 :汕头市改水降氟效果显著。随着改水年限的延长 ,氟斑牙患病率逐渐降低 ,未改水的区域 8～ 15岁儿童氟斑牙患病率仍很高。
Objective To observe fluoride content in water and dental fluorosis prevalence in 8-15 years old children after water improvement to reduce fluoride in drinking-water type high fluoride areas in Shantou.Methods Dental fluorosis prevalence in 8-15 years old children was observed by national clinical diagnosis standard of dental fluorosis, and fluoride content in water was determined by fluoride selective ion electrode.Results The range of fluoride content in water was from 1.00 to 11.60mg/L before the improving water project, but after the project finished, the range was from 0.03 to 0.62mg/L. Meanwhile, dental fluorosis prevalence rate of 8-15 years old children was from 61.84% to 35.48%, which also showed remarkably statistical difference (χ 2=65967,P<0.005).Conclusion Water improvement project has had a practical impact in reducing fluoride in drinking water and dental fluorosis prevalence rate in children aged 8-15 in Shantou. Both of them are still so high in the areas where the project wasn't carried out.
出处
《中国农村卫生事业管理》
2004年第3期38-40,共3页
Chinese Rural Health Service Administration
