Abstract:

Objective　This study is conducted to analyze the prevalence and risk factors of dental caries of permanent teeth among 12-15-year old students in Guangdong，which aims to provide theoretical evidence for the prevention of oral  diseases. Methods　A total of 3840 urban and 3840 rural students in Guangdong were selected by the methods of equal-sized，stratified，multistage and simple random sampling with a gender ratio of 1：1. All the subjects were required to take an oral health check-up and complete a questionnaire. Results　Multivariate conditional logistic regression analysis showed that older age，being female，rural living history，being non-only-child and frequently eating desserts and sweets, and sweet drinks were all risk factors for caries，while mother’s high educational level was a protective factor. Conclusion　To reduce the incidence of dental caries in students，more importance should be attached to the preventive measures，and emphasis should be placed on rural area and non-only-child children.

Key words: dental caries, affecting factors, students, permanent teeth

摘要：

目的　分析广东省12～15岁学生恒牙龋病状况及其影响因素，为口腔预防工作提供理论依据。方法　采用多阶段分层等容量随机抽样的方法，抽取广东省4个城区、4个乡镇的12～15岁学生，每个年龄组1920人，男、女各半，城、乡各半，进行口腔健康检查和问卷调查。结果　多因素Logistic回归分析结果显示，年龄大、女性、居住地在农村、非独生子女、经常进食甜点心及糖果、甜饮料为学生龋病发生的危险因素；母亲高学历为学生龋病发生的保护因素。结论　相关部门应重视学生龋病的预防工作，重点关注农村儿童和非独生子女口腔健康，降低学生龋病的发生率。

关键词: 龋病, 影响因素, 学生, 恒牙