拔除第二前磨牙与非拔牙正畸矫治后牙根吸收的研究  

Study on apical root resorption in orthodontic patients treated with second premolar extraction and non-extraction therapy

作　　者：王瑜[1] Kiranhood 杜跃华[1] 秦朴[1] 

机构地区：[1]重庆市口腔疾病与生物医学研究中心/重庆医科大学附属口腔医院正畸科,400015

出　　处：《重庆医学》2012年第26期2701-2702,2705,共3页Chongqing medicine

基　　金：重庆市教育委员会科研基金资助项目(KJ100315)

摘　　要：目的探讨正畸治疗中拔除第二前磨牙矫治与非拔牙矫治对牙根吸收(RR)的影响。方法在12～14岁年龄段中,选择50例正畸患者的596颗牙齿为研究样本,将研究对象分为拔牙组与非拔牙组,每个研究对象治疗前、后拍摄曲面断层X线片,并进行分析。结果拔牙组相对于非拔牙组,上、下颌中切牙,侧切牙,第一磨牙及下颌第一前磨牙有较多的牙根吸收(P<0.05),而上、下颌尖牙的牙根吸收差异无统计学意义(P>0.05)。结论拔除第二前磨牙矫治能导致矫治牙一定程度的牙根吸收,但不会影响牙齿正常的功能和稳定。Objective To comparatively assess the severity of root resorption（RR） in the patients treated with second premolar extraction and non-extraction treatment protocols.Methods 596 teeth in 50 orthodontic patients aged 12-14 years were selected as the study subjects and divided into the extraction group and the non-extraction group.The panoramic radiographs were obtained for all the subjects before and after treatment and analyzed.Results Compared with the non-extraction group,the maxillary and mandibular central incisors,lateral incisors,1st molars and the mandibular first premolar in the extraction group had more RR（P0.05）.Conclusion The second premolar extraction may lead to ARR in a certain extent without affecting the normal function and stability of teeth.

关 键 词：牙根吸收 磨牙 正畸学 矫正 

分 类 号：R783.5[医药卫生—口腔医学]