正畸治疗患者不同结扎方式对菌斑指数和龈沟出血指数的影响

目的: 探讨正畸治疗中3种不同结扎方式对牙面菌斑指数(PLI)和龈沟出血指数(SBI)的影响。方法: 选取正畸治疗患者90例, 按结扎方式不同随机分为橡皮圈结扎组(Ⅰ组)、结扎丝结扎组(Ⅱ组)和AO自锁托槽组(Ⅲ组)。分别于矫治前和矫治后第6个月测量患者的PLI和SBI。结果: 矫治前3组PLI和SBI差异均无统计学意义(P>0.05)。3组患者矫治后6个月PLI和SBI均较矫治前明显增高(P<0.01)。矫治后6个月Ⅰ组PLI和SBI均显著高于Ⅱ组和Ⅲ组(P<0.01), Ⅱ组PLI显著高于Ⅲ组(P<0.01), Ⅱ组和Ⅲ组SBI差异无统计学意义(P>0.05)。 结论: AO自锁托槽和结扎丝结扎方式在预防牙菌斑和牙龈炎症方面显著优于传统的橡皮圈结扎方式, 可在正畸治疗中推广应用。

Effect of different ligation methods on the plaque index and sulcus bleeding index patients with orthodontic treatment

Objective:To explore the effects of different ligation methods on the plaque index( PLI) and sulcus bleeding index( SBI) of patients with orthodontic treatment. Methods:Ninety patients with orthodontic treatment were randomly divided into the rubber band ligation group( group Ⅰ) and ligature group ( group Ⅱ) and AO self-ligating group ( group Ⅲ) according to the different ligation methods. The PLI and SBI in three groups were measured at 6 months before and after treatment. Results:The differences of PLI and SBI between groupⅠ,groupⅡand groupⅢbefore treatment were not statistically significant(P>0. 05). Compared with these before treatment,the PLI and SBI in 3 groups after 3 months of treatment significantly increased(P<0. 01). The PLI and SBI in groupⅠafter 6 months of treatment were significantly higher than these in groupⅡand groupⅢ(P<0. 01). After 6 months of treatment,the PLI in group Ⅱ was significantly higher than that in group Ⅲ(P<0. 01),and the difference of SBI between group Ⅱ and group Ⅲ was not statistically significant(P>0. 05). Conclusions:The effects of the self-ligating and ligature on preventing dental plaque and gingivitis are better than these of rubber band ligation,and which can be applied in orthodontic treatment.