自锁托槽和传统直丝弓托槽在牙列排齐整平阶段的对比研究

Comparative study on the treatment efficiency between self-ligating brackets and conventional pre-adjusted brackets during the initial alignment and leveling stage

目的:比较Quick自锁矫治器与传统结扎式矫治器在初期牙列排齐整平阶段的治疗时间、复诊次数和椅旁弓丝结扎与去结扎时间。方法:选取采用Quick自锁托槽矫治器(S组)和传统MBT金属托槽矫治器(C组)治疗的患者各40例,分别纪录自戴入矫治器至上下牙列完全排齐整平、0.019"×0.025"的不锈钢丝能够顺利入槽所经历的时间和复诊次数,分别测量每位患者全口弓丝结扎及去结扎的时间,并进行统计学分析。结果:排齐整平时间,S组为(4.8±1.7)月,C组为(7.7±2.1)月;复诊次数,S组为(4.2±1.5)次,C组为(7.2±1.1)次;全口弓丝结扎时间,S组为(25.1±3.7)s,C组为(679.6±35.3)s;全口去结扎时间,S组为(31.4±2.4)s,C组为(256.5±13.6)s。S组的排齐整平时间、全口结扎去结扎时间明显短于C组,排齐整平所需的复诊次数也明显少于C组,经统计学分析其差异具有统计学意义(P<0.05)。结论:使用自锁托槽能更快地排齐整平牙列,同时减少了患者的复诊次数和椅旁操作时间,提高了临床医师的工作效率。

Objective The purpose of this study was to compare the duration of alignment and leveling in months,number of visits and the chairside time of ligation during the initial alignment and leveling stage using self-ligating brackets and conventional MBT brackets.Methods 80 patients in early permenent dentition were enrolled in this study.All of these patients were devided into two groups at random（each group consists of 40 samples） and were treated using self-ligating brackets（Group S） and conventional MBT brackets（Group C） respectively.The duration of alignment and leveling in months,number of visits and the time of ligation and deligation were recorded.Results The results showed that the duration of alignment and leveling was Group S（4.8±1.7）months,Group C（7.7±2.1）months.The number of visits was Group S,4.2±1.5;Group C 7.2±1.1.The time of archwire ligation was Group S 25.1±3.7s,Group C（679.6±35.3）s.The time of archwire deligation was Group S（31.4±2.4）s;Group C（256.5±13.6）s.The selfligating bracket system displayed dramatically shorter duration of alignment and leveling,less visit number and chairtime for archwire ligation and deligation,when compared with conventional MBT brackets（P0.05）.Conclusion The selfligating bracket system displayed higher efficiency than conventional MBT brackets during the initial alignment and leveling stage.