新型特殊口腔正畸保持器在口腔正畸中应用的临床疗效分析

摘要

Objective:To analyze the clinical effect of the new special orthodontic retainer in orthodontics.Method:Eighty-four patients of orthodontics from November 2011 to October 2013 in our hospital were selected as the objects and randomly classified into the improved group and the control group,with 42 cases in each group.The improved group was treated with the new special orthodontic retainer,and the control group was treated with Hawley retainer,the anterior teeth irregular index,dental arch length,length of dental arch arc,dental arch segment length,width between teeth and width between the first molar of the two groups were recorded and compared.Result:For dental arch arc length,(0.62±0.57)mm of the improved group was better than (1.03±0.74)mm of the control group,the difference was statistically significant(P<0.05).For the tooth jaw irregular index,(0.36±0.29) and (0.47±0.40) of the improved group were lower than (0.85±0.31) and (1.01±0.32) of the control group,the differences were statistically significant(P<0.01).Conclusion:The new special orthodontic retainer and the traditional Hawley retainer have good efficacy collectively in orthodontics,but the new special retainer makes teeth more regular,more beautiful.%目的：分析在口腔正畸中应用新型特殊口腔正畸保持器的临床疗效。方法：选取2011年11月-2013年10月在笔者所在医院进行诊断矫正的口腔正畸患者84例为研究对象，按照随机数字表法将其分为改良组与对照组，每组42例。应用改良式热压膜联冠透明器的为改良组，应用Hawley氏保持器的为对照组，记录比较两组患者经相应矫正后的上下颌前牙不整齐指数、牙弓前段长度、牙弓弧形长度、牙弓全段长度、尖牙间宽度以及第一磨牙间宽度的差异情况。结果：改良组上牙弓弧形长度(0.62±0.57)mm，较对照组的(1.03±0.74)mm更优，差异有统计学意义(P=0.035)；改良组前牙上下颌不整齐指数分别为(0.36±0.29)与(0.47±0.40)，均远远低于对照组的(0.85±0.31)与(1.01±0.32)，差异均有统计学意义(P<0.01)。结论：新型特殊保持器与传统Hawley氏保持器对于口腔正畸均有不错疗效，但新型特殊保持器能够使牙列更加整齐，更加美观。