目的 了解东乡族、保安族和裕固族5岁儿童患龋情况及家长口腔卫生知识和行为,制定有效的防治措施.方法 采用2005年第3次全国口腔健康流行病学抽样调查方案设计的儿童母亲问卷调查表,整群、分层抽样,抽取东乡族、保安族和裕同族5岁儿童和家长进行儿童龋齿的流行情况调查和家长口腔卫生知识和行为的调查.结果 东乡族儿童乳牙患龋率为76.47%.龋均为3.89颗,保安族儿童乳牙患龋率为56.36%,龋均为2.42颗,裕固族儿童乳牙患龋率为66.89%,龋均为3.16颗.保安族儿奄家长的口腔卫生知识的知晓情况低于其他两个民族.3个民族中多数父母没有真正了解孩子的口腔健康状况,没有认识到定期口腔检查的重要性.结论 针对3个民族儿童乳牙患龋率高以及就诊率低的特点,有必要加强父母的口腔健康教育,维护和提高儿童口腔健康水平.%Objective To understand thc epidemiology of dental caries and their parents' oral health knowledge of 5-year-old children in Dongxiang,Baoan and Yugu nationalities and to make an effective prevention and cure measure. Methods The questionnaire and schedule table ac- cording to standard and method used in the third national oral health were devised. The epi- demiological investigation of dental cavies of 5-year-old children and oral hygiene knowledge and behavior of their parents were made in Dongxiang,Baoan and Yugu nationality by the means of whole and stratified sampling. Results The caries prevalence rate and average caries of 5-year- old children were respectively 76.47% and 3.89 teeth in Dongxiang nationality,56.36% and 2.42 teeth in Baoan nationality,66.89% and 3.16 teeth in Yugu nationality. The parents in Yugu and Dongxiang nationalities had more oral hygiene knowledge than those in Baoan nationality. The majority of the parents knew little about the oral health of their children and the significance of regular oral examination for children. Conclusion According to the high caries prevalence rate of 5-year-old children and the low visit rate in the three races,it is essential to reinforce the oral health education for the parents in order to promote children's oral health level.
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