改良压膜透明保持器在安氏Ⅱ类错中的疗效观察  

Effect of modified vacuum formed retainer on stability of occlusion in Angle Ⅱ malocclusion after orthodontic treatment

作　　者：田存美[1] 许小文[2] 

机构地区：[1]江苏省姜堰市人民医院口腔科,姜堰225500 [2]江苏省姜堰市人民医院病案室,姜堰225500

出　　处：《口腔医学》2011年第9期549-551,共3页Stomatology

摘　　要：目的探讨改良透明压膜保持器在下颌后缩为主的安氏Ⅱ类错保持治疗中的临床疗效。方法选择48例年轻恒牙以下颌后缩为主的安氏Ⅱ类错患者,固定矫治结束后,随机分为2组,每组24例,分别采用普通透明保持器和改良式透明保持器。2年后观察矢状向的稳定性。结果改良式透明压膜保持器保持治疗2年后,配戴前、后的头影测量值改变在统计学上无显著性差异(P>0.05),前牙覆覆盖关系保持稳定并有减小趋势。普通透明压膜保持器组配戴前、后的头影测量值改变在统计学上有显著性差异(P<0.05)。结论改良式透明压膜保持器在年轻恒牙以下颌后缩为主的安氏Ⅱ类错患者矫治后保持中具有稳定上下颌关系的确切疗效。Objective To study effect of modified vacuum formed-retainer on stability of occlusion in Angle Ⅱ malocclusion after orthodontic treatment.Methods 48 cases of Angle Ⅱ malocclusion with mandible retrusion after orthodontic treatment were randomly divided into two groups：traditional vaccum-formed retainer group and modified vaccum-formed retainer group.The stability of occlusion was obseved 2 years later.Results After 2 years′ therapy,the results of cephalometric measurement with modified vaccum-formed retainer showed that the treatment had no signific difference before and after treatment（P0.05）.The results of cephalometric measurement with tradional vaccum-formed retainer showed that the treatment had signific difference before and after treatment（P0.05）.Conclusions The modified vaccum-formed retainer is better than tradional vaccum-formed retainer in the effect of retaining occlusional stability.

关 键 词：透明压膜保持器 下颌后缩 安氏Ⅱ类错 

分 类 号：R783.5[医药卫生—口腔医学]