苏州市姑苏区7～9岁儿童龋病流行病学调查

目的 调查分析苏州市姑苏区7~9岁儿童龋病流行状况。方法 采用分层整群随机抽样方法，对苏州市姑苏区小学7~9岁1 452名学生进行乳牙及第一恒磨牙的龋病流行病学调查，以及第一恒磨牙的萌出和窝沟封闭情况。结果 乳牙患龋率77.69%，龋均3.706，充填率14.48%，乳牙患龋率和充填率随年龄增长呈下降趋势；第一恒磨牙患龋率21.21%，龋均0.444，充填率9.15%，恒牙患龋率和龋均8岁年龄组最低，而充填率随年龄增长呈上升趋势，总窝沟封闭率为10.74%。结论 苏州市7~9岁儿童乳牙及第一恒磨牙患龋率较高，充填率和窝沟封闭率较低，建议增加适龄儿童的窝沟封闭比例，加强口腔健康检查及随访。

An epidemiological investigation of caries status among 7-to 9-year-old children in Gusu District of Suzhou

Objective To investigate the caries prevalence rate in 7-to 9-year-old children in Gusu District of Suzhou. Methods 1 452 children aged 7~9 years old were randomly selected using cluster sampling method in Gusu District of Suzhou city and the caries prevalence was investigated. Eruption and the pit and fissure sealants of the first permanent molars were also examined. Results The caries prevalence rate of deciduous teeth was 77.69%. Mean dmft was 3.706. And the filling percentage was 14.48%. The rate of caries and filling of the deciduous teeth decreased with age. The caries prevalence rate of the first permanent teeth was 21.21%. Mean DMFT was 0.444. And the filling percentage was 9.15%.The rate of caries and mean DMFT were the lowest in the 8-year-old group. However, the filling percentage of the permanent teeth increased with age. The rate of pit and fissure sealants was 10.74%. Conclusion The caries prevalence rate of deciduous and permanent teeth in 7-to 9-year-old children in Suzhou is relatively high, while the filling percentage and sealants rate are at a low level. It is recommended to increase the proportion of pit and fissure sealants and strengthen the examination of oral health and follow-up.