Objective To explore the changes of gingivitis index and bacteria in crevicular fluid during orthodontic treatment.
目的探讨正畸治疗中牙龈指数及龈沟液细菌的变化。
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.
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。
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