自锁托槽与传统托槽矫治对牙弓形态影响的临床比较

摘要

目的：比较自锁托槽与传统托槽对牙弓形态变化的影响，分析自锁托槽矫治牙列拥挤的临床效果.方法：选取在笔者所在科进行正畸矫治的患者80例，随机分为观察组和对照组各40例，观察组采用自锁托槽矫治，对照组采用传统金属托槽矫治，比较两组治疗前后牙弓形态的变化.结果：自锁托槽与传统托槽治疗可改善第一前磨牙宽度、第二前磨牙宽度、第一磨牙间宽度、前段弓长，治疗前后组内比较差异具有统计学意义(P<0.05)；比较治疗后的改变量，观察组患者第二前磨牙宽度、中段弓长的改善效果优于对照组，差异具有统计学意义(P<0.05).结论：自锁托槽矫治相对于传统金属托槽矫治改善牙弓形态更为明显，且操作时间短，使用舒适.%　　Objective:To evaluate changes in the dental arch and soft and hard tissue produced by the self-ligating bracket and conventional bracket.Method:80 patients were selected and assigned randomly into 2 groups as observation group and control group.Each group contained 40 patients. Observation group received non-extraction treatment with a self-ligating bracket and control group with a conventional bracket.The measurements of intercanine and intermolar and interpremolar width and arch length of dentition were made on dental casts to investigate the changes associated with the correction.Result:There was significant increase in length of dental arch with self-ligating and conventional bracket after treatment(P<0.05).And there were significant increase in second premolar width and middle arch length in observation group than control group(P<0.05).Conclusion:Self-ligating bracket has better clinical effect,shorter operation time and more comfortable than conventional bracket.