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目的比较使用自锁托槽和传统托槽临床矫治安氏Ⅰ类错牙合畸形效率的差异。方法选取2011至2015年于哈尔滨医科大学口腔医学院口腔正畸科门诊就诊并完成治疗的安氏Ⅰ类错牙合畸形患者80例,依据所使用的托槽类型分为自锁托槽组和传统托槽组,两组进一步分为拔牙组和非拔牙两个亚组,每组20例,比较自锁托槽组和传统托槽组及自锁托槽非拔牙组和传统托槽非拔牙组矫治前后PAR指数、PAR指数减少百分量(Pc PAR)、治疗总时间(TT)、效率指数(EI)。结果自锁托槽拔牙组Pc PAR明显多于传统托槽拔牙组,差异有统计学意义(P<0.05);两组TT比较,差异无统计学意义(P>0.05);自锁托槽拔牙组EI大于传统托槽拔牙组,差异有统计学意义(P<0.05);传统托槽非拔牙组的Pc PAR、TT高于自锁托槽非拔牙组,差异均有统计学意义(P均<0.05);两组EI比较差异无统计意义(P>0.05)。结论托槽的类型可以影响安氏Ⅰ类错牙合畸形的矫治效率。
Objective To compare the differences of clinical efficacies of Class Ⅰ malocclusion using self-ligating brackets and traditional brackets. Methods From 2011 to 2015, 80 cases of Class Ⅰ malocclusion were treated in Orthodontics Clinic of Harbin Medical University Stomatology Hospital. According to the types of brackets used, the patients were divided into self-ligating brackets group and Traditional brackets group, the two groups were further divided into two groups of extraction group and non-extraction group, 20 cases in each group, compared with self-ligating brackets group and brackets group and self-ligating brackets non-brackets group and traditional brackets non-extraction Group before and after treatment PAR index, PAR index decreased percentage (Pc PAR), total treatment time (TT), efficiency index (EI). Results There were significant differences in Pc PAR between the two groups (P> 0.05). There was no significant difference in TT between the two groups (P> 0.05) (P <0.05). The Pc PAR and TT in the non-extracorporeal group were significantly higher than those in the non-extracavitary group (P <0.05), and the difference was statistically significant (P <0.05) <0.05). There was no significant difference between two groups of EI (P> 0.05). Conclusion The type of bracket can influence the correction efficiency of Class Ⅰ malocclusion.