颞下颌关节盘及其附着的组织学观察  

Histological study on temporomandibular joint disc and its attachment

作　　者：贺建军[1] 王美青[1] 

机构地区：[1]第四军医大学口腔医学院,西安710032

出　　处：《实用口腔医学杂志》2004年第1期52-55,共4页Journal of Practical Stomatology

基　　金：军队"十五"科研规划项目 (No .0 1MB1 1 7);陕西省自然科学基金项目(No. 2 0 0 1SM 39)资助

摘　　要：目的 :探讨关节盘及其附着的形态特点和生理病理意义。方法 :12具尸头的 2 3侧颞下颌关节 ,每关节四等分切片 ,共 92张 ,HE染色。结果 :①颞后附着和下颌前附着较疏松 ,下颌后附着和颞前附着较致密 ,其中的纤维以前后走行为主。②关节盘中带纤维以前后走行为主 ,前、后带纤维呈多向走行。③关节盘后区有 (6/ 12例、11/ 2 3 )侧 3 3 / 92张切片显示具有第四带结构 ,其特征是盘后区由类似于关节盘内的长而致密的胶原纤维结构构成 ;3 6/ 92张 (6/ 12例 10 / 2 3侧 )张具有转纤维 ,其特点为纤维从较厚的盘后带上端突然转向后下行 ,形成明显转折角。结论 :关节盘及其附着的纤维走行特征可有不同的表现 。Objectives: To investigate the characteristics and their functional significance of TMJ disc and its attachment. Methods: Each of the 23 TMJs from 12 cadavers were divided into quadrants sagitall y, and total 92 histological slices were obtained and stained with HE.The morpho logical characteristics of the samples was observed microscopically. Results: ①Both temporal posterior and anterior mandibualr attachment s were loose while mandibular posterior and anterior temporal attachments were d ense in which the fibers run anterior posteriorly. ②Fibers in the intermediate zone ran predominantly in anterior posterior direction while those in both ant erior and posterior bands were mixed with transverse fibers. ③At the posterior portion of disc there were 33 out of 92 slices from 6/12 cadavers (11/23 TMJs) s howed the structure of 'the fourth band' which was featured by dense fibers alik e those of inner disc. There were 36 out of 92 slices from 6/12 cadavers (10/23 TMJs) showed the structure of 'turned fibers' which was featured by a sudden tu rning of fibers from the thick posterior band back and downward, providing an angle like sign. Conclusions: There is great difference o f fiber direction in various parts of disc and its attachments, reflecting the functional demands.

关 键 词：颞下颌关节盘 组织学 解剖学 形态学 

分 类 号：R329[医药卫生—人体解剖和组织胚胎学]