Abstract:

Objective    To explore the dental caries of children aged 3 to 5 in Liaoning province，and provide data support for the prevention and treatment of dental caries. Methods    According to the requirements of the Fourth National Epidemiological Survey of Oral Health，a total of 1294 children aged 3，4 and 5 years old in Liaoning province were selected to calculate the prevalence and the mean dmft（decayed-missing-filled tooth）. Results    The mean dmft in the three groups of aged 3，4 and 5 years old were 3.64，5.13 and 6.33，respectively. The prevalance of dental caries in deciduous teeth were 64.0%，78.4% and 88.0%，respectively. There were significant differences in the mean dmft and the prevalence between urban and rural areas and among different aged groups（P < 0.05）. Conclusion    The prevalence of caries in children aged 3 to 5 years old in Liaoning province is serious，and the rural population is the focus group for the prevention of dental caries.

Key words: the Fourth National Epidemiological Survey of Oral Health, preschool children, dental caries

摘要：

目的    了解辽宁省3 ~ 5岁儿童乳牙龋病状况，为辽宁省口腔健康保健工作及相关研究提供数据支持。方法    依照第四次全国口腔健康流行病学调查方案要求，抽取辽宁省3、4、5岁常住学龄前儿童共计1294人，计算患龋率和龋均并比较存在的差异。结果    3 ~ 5岁儿童龋均分别为3.64、5.13、6.33，各年龄组的城乡差异均有统计学意义（P < 0.05），城市儿童龋均显著低于乡村儿童；患龋率分别为64.0%、78.4%、88.0%，乡村高于城市，差异均有统计学意义（P < 0.05）。结论　辽宁省3 ~ 5岁儿童乳牙龋病患龋情况较严重，乡村人群是龋病预防的重点人群。

关键词: 第四次全国口腔健康流行病学调查, 学龄前儿童, 龋病