垂直生长型安氏Ⅱ类1分类拔牙病例矫治前后软组织的改变

The soft tissue change of Angle's Class Ⅱ division 1 malocclusion patients with vertical growth pattern after tooth extraction orthodontic treatment

目的研究垂直生长型安氏Ⅱ类1分类拔牙病例软组织在矫治前后的变化,以期为正畸临床治疗方案的制定和治疗方法提供参考。方法选择38例垂直生长型安氏Ⅱ类1分类拔牙病例,在矫治前及矫治后拍摄头颅侧位片,对26个测量指标进行测量,并对矫治前后的变化和青少年与成人矫治前后的变化量进行比较。结果矫治后TUL-EP、TLL-EP、上下唇位置、Stoms-Stomi、U1-Ptm等减小,而上唇凹点厚度、上唇凸缘厚度、上下唇长度、上下唇倾角、鼻唇角、Z角、颏唇沟倾角等增加;青少年组上唇凹点厚度、下唇长度、A′-Ptm治疗后均增加,而成人组则减小,差异有统计学意义;同时青少年组与成人组上唇长度、颏唇沟倾角、U1-Ptm的变化也有统计学意义。结论垂直生长型安氏Ⅱ类1分类拔牙病例在早期治疗更能改善侧貌美观。

Objective This study is to evaluate the soft tissue change of Angle＇s Class Ⅱ division 1 malocclusion patients with vertical growth pattern after tooth extraction orthodontic treatment,and to provide experimental results to help to make orthodontic treatment plan and treatments.Methods 38 Angle＇s Class Ⅱ division 1 malocclusion patients with vertical growth pattern and with tooth extraction orthodontic treatment were included in this study.The pre-and post-treatment cephalometric X-rays were made and 26 measurement items were measured.The change value of pre-and post-treatment,youngsters and adults were compared.Results TUL-EP,TLL-EP,upper and lower lip position,Stoms-Stomi,U1-Ptm were reduced after treatment.Upper lip sulcus and flange thickness,upper and lower lip length,upper and lower lip inclination angle,nasolabial angle,Z angle,mentolabial sulcus inclination angle were enlarged after treatment.The upper lip sulcus thickness,lower lip length and A＇-Ptm of adolescent were enlarged,but adult were on the contrary.The change of upper lip length,mentolabial sulcus inclination angle and U1Ptm between adolescent and adult was statistically different.Conclusion The best treatment period of patients with Angle＇s Class Ⅱ division 1 malocculsion with vertical growth pattern was in the rapid growth and development period of adolescent.