为了探讨配戴义齿人群中，刷牙对基牙菌斑、菌丛的影响，本实验分析了可摘局部义齿基牙软垢指数和菌丛的变化情况．结果表明，甲乙两组软垢指数间有非常显著性差异；而菌斑中粘性放线菌、变形链球菌及乳杆菌的百分比差异则不显．结果提示：每天保持一定的刷牙时间，能抑制菌斑的形成，但对致龋菌的生长却没有控制作用．因此，义齿配戴者除刷牙外，还应选用其它的义齿清洁产品，以预防义齿性疾病． In order to explore the effect of brushing on plaque and bacterial flora in dental prosthesis, we analyzed the change of the soft tissue index and bacterial plexus of the removable partial denture. The results showed that there was a very significant difference between the two groups of soft dirt index; while the percentage of viscous actinomycetes, streptococcus mutans and lactobacillus in the plaque was not significant. The results suggest that: every day to maintain a certain brushing time, can inhibit the formation of plaque, but did not control the growth of cariogenic bacteria. Therefore, the denture wearers brushing should also use other denture cleaning products, to prevent denture disease.