腭中部微种植钉支抗系统的临床效果评价  

Clinical outcome evaluation of midpalatal mini-implant anchorage system in orthodontic treatment

作　　者：潘一春[1] 赵健慧[1] 

机构地区：[1]北京大学口腔医学院.口腔医院第二门诊部正畸科,北京100101

出　　处：《北京大学学报（医学版）》2014年第6期969-974,共6页Journal of Peking University:Health Sciences

基　　金：北京大学口腔医院临床新技术新疗法项目(PKUSSNCT-12B14)资助~~

摘　　要：目的:初步探讨腭中部微种植钉支抗系统在固定矫治中的支抗效果,为正畸临床支抗的选择提供参考。方法:选择骨性Ⅰ、Ⅱ类需上颌强支抗的青少年正畸患者14例作为研究对象,均采用双颌固定矫治器进行正畸治疗,在上颌减数两颗第一双尖牙并在腭中线旁、第一磨牙水平植入微种植钉一颗。以0.019 inch×0.022 inch(1inch=2.54 cm)的不锈钢方丝横腭杆固定连接微种植钉和双侧上颌第一磨牙,组成一个腭中部微种植钉支抗系统进行正畸力的负载,下牙列不纳入研究。植入微种植钉时(T0)、上颌间隙关闭或基本关闭时(T1)分别拍摄头颅侧位片进行头影测量描图。分别采用SN-7平面及PP平面作为参考平面,对微种植钉以及上颌第一磨牙在T0、T1的位置差异进行头影测量分析。采用配对t检验进行统计学分析。结果:腭中部微种植钉植入后的临床成功率为73.9%。14例进行测量分析的病例中,微种植系统负载正畸力后仍保持稳固,双侧第一磨牙没有发生明显的近中移动。微种植钉以及上颌第一磨牙的位置变化在两组间的差异没有统计学意义。结论:本研究中设计的腭中部微种植支抗系统具有较好的稳定性,在正畸治疗中能够起到强支抗的作用,可作为一种正畸强支抗的可选方案在临床中应用。Objective：To evaluate the effect of midpalatal mini-implant anchorage system in fixed appliance treatment.Methods：In this study,14 adolescents who had skeletal class Ⅰ or Ⅱ malocclusions were involved.Maximal anchorage was required during orthodontic treatment.Maxillary first premolars of the selected individuals were extracted and the individuals were treated by fixed appliance.One mini-implant was inserted in the midpalatal suture region and a transpalatal arch （TPA） made of 0.019 inch ×0.022 inch （1 inch =2.54 cm） stainless steel was adhered to the mini-implant and upper first molars.Cephalometric radiographs taken after mini-implants inserted （T0） and before mini-implants removing （T1） were traced and measured.SN-7 plane and PP plane were used as reference planes.Student＇s t-test was used.Results：The successful rate of midpalatal mini-implant was 73.9％.All the items measured were found with no significant difference between the two groups.Conclusion：This mini-implant system as orthodontic anchorage in midpalatal region can be an alternative method of maximal anchorage during orthodontic treatment.

关 键 词：正畸支抗 腭 正畸学 测颅法 

分 类 号：R783.5[医药卫生—口腔医学]