磁力压低成年猴后牙的实验研究  

The Effect of Bite-blocks with Repelling Magnets on The Intrusion of Posterior Teeth in Nongrowing Rhesus Monkeys

作　　者：梁文勇[1] 徐芸[1] 李璞[1] 晋德光[1] 

机构地区：[1]昆明医学院第一附属医院口腔正畸科

出　　处：《昆明医学院学报》1998年第3期77-79,共3页Journal of Kunming Medical College

摘　　要：选用成年雄性恒河猴４只做动物实验，其中２只为实验组，上下颌戴包埋磁块的塑胶垫式矫治器，每侧上下磁块呈同极相对，产生斥力．１只为对照猴，戴相同厚度但未加磁块的塑胶垫式矫治器．剩下１只为空白对照，不戴矫治器．实验周期为４个月，实验前、后摄Ｘ－线定位头侧位片，测量后牙移动量．结果显示，实验组动物后牙压入量明显多于对照动物后牙压入量，平均约为１０ｍｍ．空白对照猴后牙未见移动．本研究提示，包埋磁块的塑胶垫式矫治器可增加压入后牙的疗效。Four nongrowing rhesus monkeys were chosen: twowearing bite-blocks with repelling magnets and one without bite-blocks. The experiment lasted four months. The distance of intrusion of posterior teeth were measured through the lateral cephalograms of pre- and post-experiment. The results showed that the posterior teeth of the two monkeys wearing bite-blocks with repelling magnets were intruded obviously more than those of the monkeys without magnets, the average was 1.0 mm. The posterior teeth of the monkey without bite-blocks was never observed to be intruded. It suggested that putting repelling magnets into bite-blocks could enhance the effect on intrusion of posterior teeth, but whether it is an effective method to treat patients with anterior open-bite malocclusion, further studies will be needed.

关 键 词：磁力 后牙 成年猴 口腔正畸学 He垫式矫治器 

分 类 号：R783.5[医药卫生—口腔医学]