Objective To study the effect of oral health behavior of family on the dental caries status in the primary dentition of 5-year-old children in Hainan province. Methods By multi-stage, stratified and random sampling, 758 children of five years old selected from the urban and rural areas of Hainan province were investigated for dental caries status, according to World Health Organization criteria. Their parents were also investigated. Results 633 of the 758 questionnaires were filled and withdrawn, accounting for 84.4%. The prevalence of dental caries of 5-year-old children in Hainan province was 76.1%, with the draft of 4.88 and the variance of 21.91, which was 70.3% for children from urban areas and 82.2% for those from rural areas. The consumption of sweets, chocolate, water with sugar and beverage were more in urban children then the rural children. Urban children tend to have better oral health behavior, such as the time of beginning tooth brushing, the frequency of brushing and daily use of fluoridated paste. Conclusion The implementation of a systematic education on oral health behavior of family is in urgent need in Hainan province, especially in the rural areas.%目的 研究家庭口腔健康行为对海南省城乡儿童乳牙患龋状况的影响.方法 采用多阶段分层等容量随机抽样的方法,按照《第三次全国口腔健康流行病学调查方案》中牙列状况的检查方法和标准对海南省城乡758例5岁儿童进行乳牙龋病检查,并对受检者的家长进行问卷调查.结果 共下发问卷758份,收到有效问卷633份,应答率为84.4％.包括:(1)海南省5岁儿童乳牙患龋率为76.1％,龋均为4.88,方差为21.91；其中城市儿童乳牙患龋率为70.3％,农村儿童乳牙患龋率为82.2％,农村儿童乳牙患龋率高于城市.(2)口腔健康行为分析表明,农村儿童进食糖果、巧克力、糖水、碳酸饮料等频率高于城市.城市儿童开始刷牙时间、频率、用含氟牙膏的比例均高于农村.结论 海南省尤其是农村地区应加强对家庭口腔健康行为的教育.
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