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Angl eⅡ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Angl eⅡ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-Pt m、Co-Pg、U1-APg、L1-NB距、L1-NB角、L6-MP、UL-El i ne、∠N'-Sn-Pg<0.01有非常显著统计学意义;Wi t s值、NA-Pg、U1-SN角、U6-PP、∠N'-Pg'-FH,P<0.05有显著统计学意义。结论:上下颌骨相对位置改变明显,导下颌前伸明显、上颌基骨长度有增长;下颌基骨长度增长显著;面凸角变小;上颌前牙内收明显,上下第一磨牙伸长,下面高增长,但相对全面高协调。软组织上唇突度减小、颏部前移,软组织侧貌与骨组织改建一致。
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-Pg with P〈0.01.Wits value,NA-Pg,Ul-SN°,U6-PP,and N＇-Pg＇-FH also had significant discrepancy with P〈0.05. Conclusion Relative position of the maxilla and mandible changed obviously for protraction of mandibular and growth of maxillary base bone,as well as significantly increased length of mandibular base bone.Angle of facial convexity decreased and upper anterior teeth retracted obviously.The lower facial height increased for elongation of first molars, but still relatively coordinated with all facial height. Protrusion of the upper and lower lips was reduced, and protraction of chin was observed. Reconstruction of the profile of soft tissue and bone tissue was consistent.
出处
《中国美容医学》
CAS
2013年第1期164-168,共5页
Chinese Journal of Aesthetic Medicine
基金
西安交通大学口腔医学院新技术项目
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
Angle class Ⅱ division I malocclusion
late stage of mixed dentition or inchoate permanent denture stage
Mandibular retrusion
deep overbite
deep overjet
Sander II functional appliance
