【摘要】 目的：了解昌平地区学龄前儿童龋患情况。方法：采用描述性统计学方法，回顾性分析2006-2012年昌平区《0～6岁集体儿童保健年报表》中有关数据。结果：3～6岁学龄前儿童患龋率逐年升高，2010年北京市为4～6岁儿童免费进行口腔氟化泡沫预防龋齿服务工作开始后，2012年患龋率出现下降。2006～2009年新龋率逐年上升，达到了40.14%，2010年后呈逐年下降趋势。结论：应加强托幼机构儿童口腔保健工作，提高儿童龋齿预防工作水平，做好幼儿家长、幼儿教师和儿童的健康教育宣传工作，降低儿童患龋率和新龋率，促进学龄前儿童身心健康发展。

    【关键词】 龋病； 学龄前儿童； 影响因素； 口腔保健

    【Abstract】 Objective：To know the caries status in preschool children in Changping district.Method：The descriptive statistics method was used to analyze the relative data in Changping Annual Report of 0-6 Years Old Group Child Care from 2006 to 2012.Result：3-6 years old preschool children caries rate increased year by year； the rate of caries started to decrease by 2012 with the development of the free oral fluoride foam to prevent dental caries service from 2010 in Beijing； the rate of new caries increased year by year from 2006 to 2009 up to the rate of 40.14%； it started to decrease from 2010.Conclusion：The oral health care for children in nurseries and kindergartens should be strengthened；children’s dental caries preventive work level should be improved；parents’ ......