下切牙先天缺失患者颅面形态的头影测量研究  

Cephalometric Study of the Dento-Facial Morphology in Patients with Congenital Absence of Mandibular Incisor

作　　者：邵菊萍[1] 那宾[1] 白雪芹[1] 

机构地区：[1]北京大学深圳医院口腔科,广东深圳518036

出　　处：《广东牙病防治》2011年第4期210-213,共4页Journal of Dental Prevention and Treatment

基　　金：深圳市科技计划(200902071)

摘　　要：目的探讨下切牙先天缺失对颅颌面结构的影响。方法选取下切牙先天缺失的正畸患者29例纳入下切牙缺失组,选取安氏I类轻度拥挤患者20例为对照组,拍摄头颅侧位片,进行头影测量分析的对比研究。结果与对照组比较,下切牙缺失组SNB角、ANB角减小;代表上下前牙位置关系的U1-NA、U1/NA、L1-NB、L1/NB、L1/MP均减小,U1/L1夹角增大;FH/MP增大;后颅底长Ar-S增大;全面高Gn-N、下面高ANS-M e增大;颏部突度Po-NB增大,差异有统计学意义(P<0.05)。结论下切牙先天缺失患者上颌骨发育基本正常,下颌骨略后缩,上下切牙舌倾,颏部发育较好。Objective The study was to investigate the dento-facial morphology of children with congenital absence of mandibular incisor.Methods The sample consisted 29 patients with one lower incisor missing and 20 patients with class one mild crowding.The pre-treatment cephalometric films of all of them were measured to assess the dento-facial morphology.Twenty-four parameters were evaluated.Results Compared with the control group,the incisor missing group has decreased SNB and ANB angle;U1-NA,U1/NA,L1-NB,L1/NB,L1/MP decreased;U1/L1 angle increased;FH/MP angle increased;Ar-S increased;Gn-N,ANS-Me increased;Po-NB increased;P0.05.Conclusion Patients with lower incisor missing might have a normal maxilla,a retrude mandible,a more clockwise-rotated mandible plane,upper and lower incisor retrocline and a protrude pogion.

关 键 词：下切牙 先天缺失 头影测量 

分 类 号：R783.5[医药卫生—口腔医学]