骨皮质切开术对比格犬前磨牙压入移动影响的三维形态学研究
Three-dimensional morphological analysis of corticotomy-assisted intrusion of premolars in Beagle dogs
作者：喻凤,邓锋,张翼,朱亚玲,张向凤,张赫,王华桥
Author：Yu Feng, Deng Feng, Zhang Yi, Zhu Yaling, Zhang Xiangfeng, Zhang He, Wang Huaqiao
收稿日期：2015-12-25 年卷（期）页码：2016,34(3):267-267-271
期刊名称：华西口腔医学杂志
Journal Name：West China Journal of Stomatology
关键字：微种植体支抗,骨皮质切开术,压入移动,牙根吸收,
Key words：mini-screw implant anchorage,corticotomy,intrusion movement,root resorption,
基金项目：重庆渝北区科委基金[渝北财教（2011）31号]；重庆市卫生局基金（2012-2-131，2013-2-069）
中文摘要
目的 评估骨皮质切开术辅助前磨牙压低的加速效应和牙根、牙槽骨改建情况。方法 8只比格犬的下颌骨两侧随机分为实验侧、对照侧，实验侧用骨皮质切开术和微种植体支抗（MIA）压低第三前磨牙（P3）和第四前磨牙（P4），对照侧用MIA压低P3和P4。在术前和加力后2、4、8、12周分别拍摄锥形束CT，分析P3、P4的压低量、根分叉和根尖区的牙根吸收量以及周围牙槽骨高度降低量。结果 实验侧牙齿的压低量明显大于对照侧（PPP
英文摘要
Objective This study aims to identify the effects of corticotomy-assisted orthodontic premolar intrusion and evaluate the changes of root resorption and the alveolar bone. Methods Both sides of the mandible of eight male Beagle dogs were randomly assigned into experimental and control groups. The third (P3) and fourth (P4) premolars were intruded with both mini-screw implant anchorage (MIA) and corticotomy on the experimental side. By contrast, P3 and P4 were intruded with MIA alone on the control side. During pre-operation and after 2, 4, 8, and 12 weeks of orthodontic force applications, cone beam computed tomography was performed on every dog. The distance of tooth intrusion and root resorption of furcation, as well as the apex and height changes of the alveolar bone were measured and analyzed. Results The intrusion distance of premolars on the experimental side was greater than that on the control side (PPP
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