微种植钉近中移动下颌第二磨牙关闭第一磨牙拔牙间隙  

Mini-implants as anchorage for protraction of mandibular second molars into first molar extraction sites

作　　者：缪耀强[1] 

机构地区：[1]广东省口腔医院.南方医科大学附属口腔医院正畸科,广东广州510280

出　　处：《广东牙病防治》2014年第3期117-122,共6页Journal of Dental Prevention and Treatment

摘　　要：目的探讨微种植钉近中移动下颌第二磨牙关闭第一磨牙缺隙的正畸治疗效果。方法对5例第一磨牙缺失患者使用微种植钉近中移动下颌第二磨牙关闭其间隙。结果矫治后尖牙、磨牙中性关系，前牙覆盖、覆袷正常，后牙袷关系良好，下颌第一磨牙拔牙间隙关闭，第二磨牙近中移动量为11．7mm。疗程为18．5～31．0个月，平均为26．1个月。结论在下颌第一、第二双尖牙间采用微种植钉近中移动第二磨牙，能有效地关闭第一磨牙拔牙间隙。Objective To assess the treatment method and outcome of mini-implants as anchorage for protraction of mandibular secomt molars into first molar extraction sites. Methods Five patients with missing or extracted mandibular first molars were treated by using mini-implants as anchorage for mesial movement of the mandibular second molar. Re- suits Class I canine and molar, normal anterior overbite and overjet, good occlusion, normal function, and a roots par- allel of the patients were achieved. The amounts of protraction for the second molars were 11.7 mm. Mean treatment peri- od was 26.1 months （ 18.5 - 31.0 months）. Conclusions Closure of the mandibular first molar extraction spaces was effective with the mesial movement of the second molars by using mini-implants between the roots of the first and second bicuspids.

关 键 词：微种植钉 正畸 拔牙 磨牙 

分 类 号：R783.5[医药卫生—口腔医学]