颏部形态对正畸治疗影响的研究  

Study on the effect of chin morphology on orthodontic treatment

作　　者：付彧 李紫薇 赵梦晗 史瑞新[1] Fu Yu;Li Ziwei;Zhao Menghan;Shi Ruixin(Dept.of Orthodontics,Hospital of Stomatology,Jilin University,Changchun 130021,China)

机构地区：[1]吉林大学口腔医院正畸科,长春130021

出　　处：《华西口腔医学杂志》2023年第4期443-449,共7页West China Journal of Stomatology

基　　金：吉林省卫生计生委项目(2017S028)。

摘　　要：目的通过对骨性Ⅰ类患者矫治前后的测量数据进行分析,探讨不同颏部软组织形态在矫治前后的变化及其对矫治结果的影响。方法选取55例2012年1月—2020年12月在吉林大学口腔医院正畸科完成正畸治疗的成年女性骨性Ⅰ类患者,根据头颅侧位X线片中的软组织颏形态将患者分为异常颏组(颏部形态较平坦后缩,n=27)和正常颏组(颏部形态较圆润突出,n=28),并选取相关软硬组织指标进行测量,研究不同颏部形态矫治前后组内的变化以及组间的差异。结果矫治前异常颏组的颏唇沟角、下颌颏角、下颏顶角、PP-MP、LL-E、UL-E、Po-Pos、B-B’厚度大于正常颏组(P<0.05),m∶BMe和n∶B’Mes小于正常颏组(P<0.05)。矫治后异常颏组的下颌颏角、下颏顶角、U1-SN、L1-MP、LL-E距、UL-E距、SNA、SNB和B-B’厚度减小(P<0.05),鼻唇角、m∶BMe、n∶B’Mes和Po-Pos增大(P<0.05)。矫治后正常颏组的U1-SN、L1-MP、LL-E距、UL-E距和B-B’厚度减小,鼻唇角增大(P<0.05)。m∶BMe和n∶B’Mes正相关。结论颏部形态影响矫治计划的制定,与正常颏组相比,异常颏组需要设计更大的前牙回收量;颏部软组织形态与骨组织形态相关,但是矫治后软组织颏的变化不能直接按照骨组织变化进行预测;软组织颏形态影响软组织侧貌的美学评估和矫治前后软组织的变化,对于矫治后软组织颏部变化的预测必须考虑到软组织颏本身的形态。Objective To investigate the effect of different soft-tissue morphologies on the treatment of skeletal classⅠmalocclusion patients by analyzing measurement data before and after treatment.Methods Pre-and post-treatment lateral cephalograms of 55 adult female Angle classⅠpatients were collected in the Department of Orthodontics,Hospital of Stomatology,Jilin University from January 2012 to December 2020.Chin soft-tissue morphologies in the lateral cranial radiographs were used to divide the patients into an abnormal chin morphology group(flat and retracted chins,n=27)and a normal chin morphology group(rounded and prominent chins,n=28).Relevant soft-and hard-tissue indexes were selected to study in-group varieties and intergroup differences in the varying chin morphologies before and after treatment.Results The chin-lip angle,mandibular chin angle,mandibular chin vertex angle,PP-MP,LL-E,UL-E,Po-Pos,and B-B’thickness in the abnormal chin morphology group were significantly higher than those in the normal chin morphology group(P<0.05).Furthermore,m∶BMe and n∶B’Mes in the abnormal chin morphology group were significantly lower than those in the normal chin morphology group(P<0.05).After treatment,the mandibular chin angle,mandibular chin vertex angle,U1-SN,L1-MP,LL-E,UL-E,SNA,SNB,and B-B’thickness of the abnormal chin morphology group significantly decreased(P<0.05),whereas the nasolabial angle,m∶BMe,n∶B’Mes,and Po-Pos significantly increased(P<0.05).In the normal chin morphology group,the U1-SN,L1-MP,LL-E,UL-E,and B-B’thicknesses decreased significantly(P<0.05),whereas the nasolabial angle significantly increased(P<0.05).Among them,m∶BMe and n∶B’Mes were positively correlated.Conclusion Chin morphology affects the formulation of treatment plans.Compared with the normal chin morphology group,the abnormal chin morphology group required a larger retraction of incisors.Although the chin of soft-tissue morphology is related to the morphology of bones,the changes in soft tissue chin after treatme

关 键 词：颏部形态 软组织侧貌 安氏Ⅰ类 

分 类 号：R783.5[医药卫生—口腔医学]