摘要
目的了解乳牙氟斑牙的患病情况,为进一步研究其发病规律及可能的机制提供依据。方法抽取陕西省宝鸡地区357名7~8岁儿童,收集相应的饮水样本并用氟离子选择电极法测定其含氟浓度。受检儿童根据饮用水中氟化物的浓度分为4组。用Dean’s分类法检查和记录儿童乳牙氟斑牙患病情况。结果饮水样本中的含氟浓度由0.26 l^3.79 mg/L。随水氟浓度的增高,乳牙氟斑牙患病率由20%逐渐增高至78%,指数由0.4增至2.2。当水氟浓度高于0.75 mg/L时,出现乳牙氟斑牙轻度流行。而当水氟浓度为3.5 mg/L左右时,约多数的受检者被检出有乳牙氟斑牙,其流行程度达显著流行。结论当水氟浓度高于0.75 mg/L时,就可造成乳牙氟斑牙的局部流行。
Objective To assess prevalence and severity of fluorosis in the primary dentition of 7～8 years old children, in areas with fluoride concentrations in the drinking water ranging from 0.26 to 3.79 mg/L Methods Three hundred and fifty-seven children from 7 different primary schools were divided into 4 groups, according to the waters＇ fluoride concentrations （A： 0.26～0.65 mg/L, B： 0.76～0.97 mg/L, C： 1.15～1.97 mg/L and D： 2.11～3.79 mg/L）. Clinical examinations were made under field conditions, and dental fluorosis was examined and recorded by using the Dean＇s Index. Results The prevalence of dental fluorosis in primary teeth varied from 20%, 52%, 61% and 78% in grope A, B, C and D separately. The positive relationship was found between the concentration of fluoride in drinking - water and fluorosis community index. A mild epidemic of dental fluorosis in primary teeth was observed when fluoride content in drinking water was higher than 0.75mg/L. Conclusions In areas depending upon water with fluoride concentrations higher than 0.75 mg/L, dental fluorosis is also prevalent in primary teeth.
出处
《中国地方病防治》
CAS
北大核心
2006年第1期46-48,共3页
Chinese Journal of Control of Endemic Diseases
关键词
氟化物
氟斑牙
乳牙
Fluoride
Dental fluorosis
Primary teeth
