目的：了解四川凉山7～14周岁彝族学生患龋情况，为民族地区中小学生龋病的防治提供科学依据。方法参照世界卫生组织口腔检查诊断标准，采用多阶段随机整群抽样的方法，对7、9、12及14周岁4个年龄段的954名彝族学生进行龋病调查。用SPSS 13．0软件进行统计学分析。结果四川凉山7～14周岁彝族学生恒牙患龋率为43．50％，龋均为1．21。女性彝族学生患龋率为50．52％，男性彝族学生为36．48％，差异有统计学意义（ P＜0．01）。患龋率随年龄增长明显升高，龋坏主要发生在第一恒磨牙，且下颌高于上颌。总的充填率为零。结论凉山彝族学生患龋情况严重，预防和治疗为空白，他们的口腔健康问题应受到更多的关注。%Objective To investigate the caries prevalence of permanent teeth among the Yi students aged 7~14 years old at Liangs⁃han prefecture, Sichuan, and to provide scientific basis for the prevention and treatment of caries for the primary and middle school students in the area. Methods According to the caries diagnostic criteria of WHO, stratified sampling, random sampling and cluster sampling were used in the survey. The caries status of 954 Yi students aged 7, 9, 12 and 14 years old was examined. The result was statistically analyzed by SPSS 13.0. Results The total caries prevalence rate of the permanent teeth was 43.50% and DMFT was 1.21. The prevalence rate of girls was 50.52%, which was higher than that of boys (36.48%). The difference was statistically signifi⁃cant ( P<0.01) . The permanent teeth caries prevalence increased obviously with age. The dental caries concentrated in the first perma⁃nent molar, and it occurred more in the mandibles than in the maxillaries. The total filling rate of dental caries was zero. Conclusion The caries status of the permanent teeth among Yi students at Liangshan prefecture is serious, and there are no prevention and treat⁃ment, so that their oral health care should be paid great attention.
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