中文摘要：

目的：了解湖北省武汉市12岁和15岁青少年牙齿磨耗状况并评价其相关危险因素。方法：采用横断面研究方法。使用改良BEWE指数对720名青少年每颗牙颊面、颊颈部、牙合面/切端和腭面进行评估。通过问卷收集青少年的社会-行为危险因素。结果：12岁和15岁青少年牙齿磨耗患病率分别为18.6%和89.4%。牙本质暴露率分别为1.94%和5.56%。运动后立即喝饮料、胃返酸等和牙齿磨耗有关系。结论：牙齿磨耗随着年龄增长,并与社会-行为因素有关。在武汉市青少年人群中牙齿磨耗是一个重要问题,需要更多关注。

英文摘要：

Objective： To describe the prevalence of tooth wear and to investigate the relative factors associated with tooth wear in 12- and 15-year--old adolescents in Wuhan City. Methods： A modified version of the Basic Erosive Wear Examination （BEWE） tooth wear index was used for the buccal, cervical, occlusal/incisal and lingual faces of 720 adolescents. All participants were asked to answer a questionnaire before examination. Results： The prevalence of tooth wear was 18.6 % and 89.40% in 12- and 15-year-old adolescents, respectively. The preva- lence rates of dentin exposure were 1.94Y0 and 5.56%, respectively. Several factors such as drinking immediately after sports and reflux were found to associate with tooth wear. Conclusion： The prevalence of tooth wear increases with ageand associated with socio--behavioral risk factors. Tooth wear in 12- and 15-year-old adolescents in Wubah City is a significant problem and should receive greater attention.