功能矫形前伸下颌后幼年大鼠下颌前伸肌的超微结构观察  

The Changes of Ultrastructure in LPM and SMM to Mandibular Functional Protrusion in Growing Rats

作　　者：王昕[1] 罗颂椒[1] 李光蓉[2] 蔡维东[3] 

机构地区：[1]华西医科大学口腔医院正畸科 [2]华西医科大学基础医学院电镜室 [3]中国科学院成都分院分析测试中心电镜室

出　　处：《华西口腔医学杂志》1992年第3期217-219,共3页West China Journal of Stomatology

基　　金：国家自然科学基金3880832;教委博士点基金880311支助项目

摘　　要：运用扫描电镜和透射电镜的方法,在幼年大鼠功能矫形前伸下颌后,观察翼外肌和浅层嚼肌的超微结构变化。结果表明翼外肌线粒体数量增多,体积增大,肌糖原减少。浅层嚼肌线粒体肿胀,数量减少。证实了翼外肌和浅层嚼肌代谢方式的转化不同。By using methods of TEM and SEM,this study observed the ultrastructure of thelateral pterygoid muscles(LPM)and the superficial masseter muscles(SMM)in twelve5-week-old male Sprague-Dawley rats.The experimental animals were wore protrusive-type appliances for 12 hours a day.The results showed that mitochondrions in LPM incr-eased both in number and size,which raised oxidative capacity of this muscles.The factthat mitochondrions in SMM swelled,and the cristaes of some mitochondrions degenerationrevealed that a lower oxidative capacity exsisted in SMM.

关 键 词：功能矫形 线粒体 咀嚼肌 超微结构 

分 类 号：R783.9[医药卫生—口腔医学]