本文观察了0.02%洗必太每周含漱三次对菌斑量和菌斑浸出液细胞毒性作用的影响。结果表明:含漱可明显减少菌斑形成量(P〈0.01)和降低菌斑浸出液的细胞毒性作用(P〈0.01),使菌斑浸出液中丙酸含量减少是降低其细胞毒性作用的部分原因;且副作用小,受试者易于接受。提示该浓度和频率的洗必太含漱有抑制菌斑和预防龈炎的作用,值得进一步地研究或推广. This article observed 0.02% chlorhexidine too three times weekly rinse plaque volume and plaque leachate cytotoxic effect. The results showed that gargle can significantly reduce the amount of plaque formation (P <0.01) and reduce the cytotoxicity of plaque leachate (P <0.01), so that reducing the content of propionic acid in plaque leachate is partly responsible for its cytotoxicity ; And side effects, subjects are easy to accept. Prompted that the concentration and frequency of wash must too Gargle plaque suppression and prevention of gingivitis, worth further study or promotion.