高位口外牵引在青少年骨性II类错治疗中的作用  

A study of highpull extraoral traction on the treatment of growing patients with skeletal Class II malocclusion

作　　者：游清玲[1] 蔡中[1] 

机构地区：[1]上海交通大学医学院附属第九人民医院.口腔医学院口腔正畸科上海市口腔医学研究所,上海200011

出　　处：《上海口腔医学》2006年第4期375-377,共3页Shanghai Journal of Stomatology

摘　　要：目的:探讨高位口外牵引在青少年骨性II类错牙合早期矫治中的作用,并评价其临床疗效。方法:选取11例生长发育期骨性安氏II类错牙合病例,采用高位口外牵引治疗,与7例未经治疗的生长发育期骨性II类错牙合进行对照。摄取X线头影侧位定位片,用Pancherz分析法评判治疗过程发生的骨性和牙性变化,以SPSS11.0软件进行独立样本t检验。结果:高位口外牵引可以限制上颌发育,SNA、A-Olp2项指标在治疗组与对照组间具有统计学差异(P<0.01)。上颌磨牙远中移动具有显著差异(P<0.01)。结论:高位口外牵引能够限制上颌发育,有利于下颌发育,达到矫治目的;同时,垂直方向和矢状方向的牙及牙槽反应,有利于患者牙颌面形态的进一步改善。PURPOSE： To evaluate the effect of highpull extraoral traction on growing patients with skeletal Class Ⅱ malocclusion. METHODS ： 11 pairs of cephalograms obtained before and after highpull extra-oral traction treatment were used in this study, treatment changes were measured with Pancherz analysis, and compared with the control group. Independent samples group t test with SPSS 11.0 software package was used for statistical analysis. RESULTS： highpull extra-oral traction had inhibitive effect on forward and downward maxillary growth. Changes on SNA,A-Olp between the two groups were statistically different（P〈0.01）. Upper molars were moved back（P〈0.01）. CONCLUSION： highpull extraoral traction had orthopedic effect on the correction of skeletal Class Ⅱ malocclusion of growing patients, including inhibition of maxillary growth and allowance of fully expression of mandibular growth. Meanwhile, dental-alveolar changes on the vertical and sagital plane were beneficial to further improvement of the dental and facial appearance of the patients.

关 键 词：安氏Ⅱ类错[牙合] 高位口外牵引 头影侧位定位分析 

分 类 号：R783.6[医药卫生—口腔医学]