目的调查呼和浩特市学龄前儿童龋病的患病情况及其影响因素，为开展儿童龋病预防工作提供流行病学依据。方法采用分层整群抽样方法抽取呼和浩特市548名学龄前儿童，对其进行口腔健康检查并对儿童家长进行问卷调查。问卷内容包括儿童人口学因素、刷牙习惯、甜食摄入情况等。计数资料的统计分析使用χ2检验。结果呼和浩特市3～6岁儿童总患龋率为71.2％，其中5岁儿童患龋率最高75.9％。患龋率随年龄的增长呈上升趋势。5岁儿童的刷牙开始年龄、刷牙次数和吃甜食习惯均与乳牙患龋率有关（P＜0.05）。结论呼和浩特市学龄前儿童患龋率较高，应针对家长及幼儿园老师进行口腔卫生宣教，使儿童自小掌握正确的刷牙方法，少吃甜食，达到预防龋齿的目的。%Objective To understand the prevalence of dental caries and its influencing factors among pre-school children in Hohhot city and to provide basic data for dental care intervention for preschool children.Methods Five hundred and forty-eight preschool children were enrolled by random sampling method in Hohhot City.Oral examination was done by dentist for the children and questionnaires were performed for parents.The questionnaire includes teeth brushing habits,eating frequency of sweet foods etc.Data were analyzed byχ2 test.Results The prevalence rate of dental caries among 3-6 years old children was 71.2% in Hohhot City.The highest prevalence rate (75.9%)was found in 5-year old children.The prevalence rate increased with age.Teeth brushing habit, starting age of teeth brushing,regular eating of sweet food were found to be the related factors of dental caries (P<0.05).Conclusion The prevalence of dental caries in preschool children is relatively high in Hohhot.Oral health education for preschool children and their parents in this area is needed to correct the way of teeth brushing and eating habits of preshool children.
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