三种不同支抗形式拔牙矫治青少年双颌前突的临床研究  

Three kind of anchorage on bimaxillary protrusion of adolescents:a clinical comparative study

作　　者：霍娜[1] 段银钟[1] 张菊菊[1] 张艳[1] 

机构地区：[1]第四军医大学口腔医学院正畸科,陕西西安710032

出　　处：《临床口腔医学杂志》2006年第2期82-84,共3页Journal of Clinical Stomatology

摘　　要：目的：比较横腭杆、Nance弓及两者联合使用三种支抗形式用于青少年双颌前突拔牙矫治的临床疗效。方法：选取12～17岁安氏工类双颌前突患者32例，分为三组：横腭杆组、Nance弓组、横腭杆与Nance弓联合组，各组病例均在拔除4个第一前磨牙后，使用标准方丝弓固定矫治技术治疗，两步法关闭拔牙间隙，平均时间10．43个月。分析治疗前后X线头颅侧位定位片及牙颌模型的各项指标变化。结果：横腭杆组、Nance弓组、横腭杆与Nance弓联合组磨牙平均前移量分别为3，03mm、2．93mm、1.18mm；在垂直向和水平向上三组支抗控制无显著性差异（P≥0．05）；横腭杆与Nance弓联合组代表软组织侧貌的指标Ls—E、Li—E、Cm—Sn—Ls、Pg’B’-FH、A’L s-FH、Z角均有显著改变（P〈0．01）。结论：横腭杆与Nance弓联合支抗在矢状向、垂直向、横向支抗控制较好，三维支抗控制优于单纯使用横腭杆组或Nance弓组，是一种简单有效的非依赖性口内强支抗；对于青少年双颌前突拔牙矫治病例是一种非常有效的支抗形式。Objectlve：To compare the effect of transpalatal arch, Nance arch and transpalatal-Nance arch on reinforcing anchorage in the treatment of the adolescents with bimaxillary protrusion. Method：A total of 32 patients with Class I malocclusion and bimaxillary protrusion, aged 12-17 years old, were selected and divided into transpalatal arch group, Nance arch group and transpalatal-Nance arch group after the extraction of four first premolars. Lateral cephalometric radiographs and casts before and after treatment were taken and analyzed. Result.The average forward movement of first upper molar of transpalatal arch group,Nance arch group and transpalatal-Nance arch group were 3.03 ram, 2.93 ram, 1. 18 mm. Tanspalatal-Nance arch has the good horizontal and vertical anchorage control. The soft tissue profile （Ls-E, Li- E, Cm-Sn-Ls, Pg＇B＇-FH, A＇L s-FH and Z angle）in transpalatal-Nance arch group was greatly improved. Conclusion. The transpalatal-Nance arch anchorage system is an effective and simple anchorage with three-dimensional anchorage function. It can be used as a noncooperative strong anchorage in the treatment of the adolescents with bimaxillary protrusion.

关 键 词：横腭杆 NANCE弓 支抗 双颌前突 拔牙 

分 类 号：R783.5[医药卫生—口腔医学]