贵州省磷矿区3～6岁儿童乳牙龋病危险因素分析

Analysis on the risk factors of caries in primary teeth among the children aged 3～6 years old in phosphorus ore area of Guizhou province

目的:探讨贵州省磷矿区3～6岁儿童乳牙龋病的危险因素。方法:采用病例对照研究方法,对1 620名3～6岁儿童进行龋齿检查,其中dmft=0的596名为无龋组,dmft≥6的1 024名为高龋组,测定两组儿童唾液变形链球菌水平、唾液流速和缓冲力、软垢指数,并由儿童母亲回答统一问卷。结果:Logistic回归分析显示与儿童乳牙龋病发生相关的危险因素有:年龄、磷矿区居住年限、断奶年龄、唾液变形链球菌、软垢指数、每天吃甜食与喝甜饮料的次数、奶瓶内容物含糖、牙龈指数、睡前是否刷牙。结论:贵州省磷矿区3～6岁儿童乳牙龋病随着年龄的增加而增加,不良的生活习惯是致龋的危险因素。

Objective： To explore the risk factors of cmies in primary teeth among the children aged 3 -6 years old in phosphorus ore area of Guizhou province. Methods ： A case - control study was conducted to examine the prevalence of caries among 1 620 children aged 3 -6 years old , all the children were divided into caries free group （596 children with draft =0） and caries group （ 1 024 children with dmft I〉6） ; the levels of streptococcus mutans in saliva, saliva flow rates, buffer capacities and debris indexes were detected in the two groups; their mothers were asked to finish a unified questionnaire. Results： Logistic regression analysis showed that the risk factors of caries in pri- mary teeth among the children included age, duration of residence, the weaning time, the level of streptococcus mutans in saliva, debris in- dex, the frequency of consumption of sweets, the frequency of intake of soft drinks, use of sweetened food in nursing, gingival index and presence or absence of final brushing. Conclusion ： The incidence of caries in primary teeth among the children aged 3 - 6 years old in phosphorus ore area of Guizhou province increases with age, bad living habits are the risk factors of caries.