结果实验组的菌斑指数和牙龈指数均有明显下降，治疗牙龈炎有效率较安慰剂组高。

Results The plaque index and gingival index of experiment group had decreased obviously, which effective rate in treatment of gingivitis was higher than that of placebo group.

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目的通过调查固定矫治器治疗中牙冠表面托槽周围的牙菌斑指数评价固定矫治器对龋病的影响。

Objective to evaluate the effect to caries of the fixed appliance by the investigation of plaque index on the crown surface of teeth at the different stages.

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治疗前后检查患者的牙龈指数(GI)，菌斑指数(PLI)和龈沟出血指数(SBI)。

Gingival index (gi), plaque index (PLI) and sulcus bleeding index (SBI) were measured before and after treatment.

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观察用乳膏前后临床症状和菌斑指数、牙龈指数、龈沟出血指数的变化。

The changes of clinical sign, plaque index, gingival index and sulcus bleeding index were observed before and after using yahao.

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观察用乳膏前后临床症状和菌斑指数、牙龈指数、龈沟出血指数的变化。

The changes of clinical sign, plaque index, gingival index and sulcus bleeding index were observed before and after using yahao.

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