Impacts of orthodontic treatment with tooth extraction on the frontal view of facial soft tissue in adult fe-males with class Ⅱ division 1 malocclusion

VernacularTitle:拔牙矫治对 AngleⅡ1错牙合成年女性面部软组织正貌的影响
Author: Meihong XIE ; Kejie LAO ; Changtao QIN ; Qinqin MA ; Shuixue MO
Publication Type:Journal Article
Keywords: Adult females; Class Ⅱ division 1 malocclusion; Frontal view offacial soft tissue
From: Journal of Practical Stomatology 2016;32(3):368-371
CountryChina
Language:Chinese
Abstract: Objective:To explore the changes of orthodontic therapy with tooth extraction on frontal view of facial soft tissue in adult females with Class Ⅱ division 1 malocclusion.Methods:Frontal view of facial soft tissue aesthetic charaeteristics of 30 with and 21 without tooth extraction adult females with Class Ⅱ division 1 malocclusion were measured with direct anthropometry before and after orthodontic treatment.Results:After the extraction treatment,the distance of N-Me,Sn-Me,Sn-UL,LL-Sm,Sto-Me,Ch-Ch in-creased(P <0.05),while UL-LL decreased(P <0.05).But Zy-Zy,Go-Go had no significant change(P >0.05).There was no sig-nificant change in each parameter in nonextraction group(P >0.05).Between the 2 groups Sn-UL,LL-Sm and UL-LL showed differ-ence(P <0.05),but other parameters showed no difference(P >0.05).Conclusion:Orthodontic treatment with tooth for the fe-males with Class Ⅱ division 1 malocclusion can improve the incompetent lips,and recover the coordination between the upper and lower lips.There is little change on facial height and width.