作者对２０岁以上的２５２名彝族村民的刷牙习惯、软垢指数（ＤＩ）、牙石指数（ＣＩ）、牙龈指数（ＧＩ）进行了详细的调查，结果显示：牙龈炎患病率８０．６１％。ＤＩ与ＣＩ、ＧＩ之间、各指数与刷牙情况、刷牙时间之间有相关关系。女性ＧＩ及龈炎患病率明显高于男性。男性ＤＩ、ＣＩ与刷牙率呈负相关关系。对如何开展口腔保健宣教、口腔疾病防治进行了分析探讨，提出了措施 The author conducted a detailed survey on brushing habits, soft dirt index (DI), calculus index (CI) and gingival index (GI) of 252 Yi villagers over 20 years of age. The results showed that the prevalence of gingivitis was 80.61% . DI and CI, GI, between the index and brushing, brushing time has a correlation between. The prevalence of GI and gingivitis in women was significantly higher than that in men. Male DI, CI and brushing rate was negatively correlated. On how to carry out oral health education, prevention and treatment of oral diseases were analyzed and put forward measures