三种不同扩弓方法的动物实验研究  

Animal Study of Three Different Expansion Techneic.

作　　者：王荣[1] 吴立鹏[1] 袁坤[2] 潘乙怀 王健平[1] 

机构地区：[1]佳木斯大学口腔医学院正畸科,黑龙江佳木斯540002 [2]中国人民解放军263医院 [3]温洲医学院第二附属医院

出　　处：《口腔医学研究》2003年第4期261-263,共3页Journal of Oral Science Research

摘　　要：目的 :比较快速机械扩弓 (rapidmechanicalexpansion ,RE)慢速机械扩弓 (slowmechanicalexpansion ,SE)及磁力扩弓 (magneticexpansion ,ME)的效果及稳定性。方法 :将 4 0只中国长春大耳白兔 ,分为ME、RE、SE及对照组。应用分规及游标卡尺测量扩弓前、扩弓后和保持后牙弓弧度、后段牙弓宽度及中切牙间距离 ,且在光学显微镜下观察不同时期腭中缝组织。结果 :各组扩弓效果及稳定性均有显著性差异。结论 :RE主要增加前段牙弓宽度 ,以中切牙间距离最明显。而ME主要增加后段牙弓宽度 ,磁通量为 2 .0T的钕铁硼永磁体不会对牙齿及上颌骨组织造成有害影响。Objective:To compare the effect and stability of RE,SE,and MS.Methods:40 Changchun white big ear rabbits were divided randomly into ME group,RE group,SE group,and Control group.To make preservation mode,measure the length and width of arch and distance of mid-anterior and make statistical analysis at pre-expend;post-expand and post-retantion.To observe mid-paltal suture tissue in different period by microscope.Results:The effect and stability of each group has obvious difference on statistics.Conclusions:RE expanded anterior arch width especially the distance of mid-anterior.Permanent magnetic material Nd 2Fe 14 B expanded post width of dental arch and owned ideal expansion result and stability. Permanent magnetic material Nd 2Fe 14 B has not any adverse effect on teeth and maxillary bone tissue.

关 键 词：扩弓方法 快速机械扩弓 慢速机械扩弓 磁力扩弓 动物实验 

分 类 号：R783.5[医药卫生—口腔医学]