A study of the rotation rate of single-rooted teeth in dogs  

作　　者：段银钟 陈华 张巧余 

机构地区：[1]Department of Orthodontics,Stomatological College,Fourth Military Medical University,Xi'an 710032

出　　处：《Journal of Medical Colleges of PLA(China)》1992年第1期70-72,共3页中国人民解放军军医大学学报（英文版）

摘　　要：Sixteen one-year-old dogs were used in our experiment.We rotated the maxillary secondincisors of the dogs,applying a force of 100g and a moment of 550g·mm.The duration of theexperiment varied from 72h to 8 weeks.Activation was performed once every 2 weeks and the impressions were taken in order to measure the angles of rotation.The results of our experiment showthat the rotation rate of single-rooted tooth in dogs is 3.04/week.The graph shows the form ofgradual stairs.This paper introduces a new specialized experimental apparatus for tooth rotation.The angles of rotation are measured geometrically.Sixteen one-year-old dogs were used in our experiment.We rotated the maxillary second incisors of the dogs,applying a force of 100g and a moment of 550g·mm.The duration of the experiment varied from 72h to 8 weeks.Activation was performed once every 2 weeks and the im pressions were taken in order to measure the angles of rotation.The results of our experiment show that the rotation rate of single-rooted tooth in dogs is 3.04/week.The graph shows the form of gradual stairs.This paper introduces a new specialized experimental apparatus for tooth rotation. The angles of rotation are measured geometrically.

关 键 词：TOOTH ROTATION TOOTH ROOT INCISOR ANIMAL experiment DOGS 

分 类 号：R[医药卫生]