SanderII矫治器治疗下颌后缩临床研究.docVIP

SanderII矫治器治疗下颌后缩临床研究 　　[摘要]目的：利用SanderⅡ功能矫治器的腭导杆、上颌镍钛螺旋扩弓簧和下颌扩弓簧、分体式的独特设计，矫治AngleⅡ类1分类患者生长高峰前期或高峰期、替牙晚期或恒牙早期的深覆牙合、深覆盖患者。方法：病例纳入标准为AngleⅡ类1分类生长高峰前期或高峰期、替牙晚期或恒牙早期的深覆牙合、深覆盖患者，下颌平面角为均角或底角。共有13人配戴SanderⅡ功能矫治器1年，拍治疗前后头颅定位侧位片。用西安交通大学口腔医院正畸科X线头影测量分析方法分析治疗前后X线测量数据，并用SPSS18.0软件配对t检验进行统计学处理。结果：ANB°、ANS-Ptm、 Co-Pg 、U1-APg、L1-NB距、L1-NB角、L6-MP、UL-Eline、∠N-Sn-Pg 　　[关键词]AngleⅡ类1分类；替牙晚期或恒牙早期；下颌后缩；深覆牙合；深覆盖；SanderⅡ功能矫治器 　　[中图分类号]R783.5 [文献标识码]A [文章编号]1008-6455（2013）01-0164-05 　　Sander Ⅱfunctional appliance production and treatment of class II malocclusion clinical application study 　　LI Xiang-lin，ZHOU Hong，ZOU Min，SI Xin-qin，WANG Xiao-rong，HOU Yu-xia，ZOU Rui，GUAN Li-min，BAO Qing-hong 　　（Department of Orthodontics，School of Stomatology，The Fourth Military Medical University，Xian 710004，Shaanxi，China） 　　Abstract： Objective To treat the patients of Angle class Ⅱ division I malocclusion with deep overbite and deep overjet at their late stage of mixed dentition or inchoate permanent denture stage during or before growth peak，by using the uniquely designed Sander Ⅱ functional appliance with portions of palatine guide， maxillary Ni-Ti screw expanding arch spring and mandibular expanding arch spring. Methods Patients of Angle class Ⅱ division I malocclusion with deep overbite and deep overjet were selected at their late stage of mixed dentition or inchoate permanent denture stage during or before growth peak，and their mandibular plane angle was average or low.Thirteen patients were collected to treat with the Sander Ⅱ functional appliance for a year.Lateral cephalometrics were taken before and after the treatment，and then data were analyzed with methods developed by orthodontic department of Xi an Jiaotong university stomatological hospital. Statistical analysis was carried out using paired sample t-test for differences among groups with SPSS18.0 software. Results Statistically significant difference was found in ANB °，ANS-Ptm，Co-Pg，U1-APg，L1-NBmm，L1 -NB °， L6-MP，UL-E line and N -Sn-P