无牙颌患者颞下颌关节凹形态的研究  

Morphologic characteristics of glenoid fossae of edentulous patients

作　　者：周秦[1] 任敏宁[2] 白乐康[1] 刘越胜[1] 徐海富[1] 杜斌[1] 

机构地区：[1]西安交通大学口腔医院修复科,西安710004 [2]西安交通大学第一医院口腔科,西安710000

出　　处：《口腔医学》2006年第1期41-42,共2页Stomatology

基　　金：西安交通大学口腔医院青年科研基金资助项目

摘　　要：目的探讨无牙颌患者垂直距离变化与颞下颌关节凹形态改建的关系。方法对两组不同垂直高度的无牙颌患者摄下颌姿势位双侧颞下颌关节标准薛氏位片,测量关节凹中心O’点与底边中点O之间的水平距离,并进行组间比较。结果关节凹中心与O点之间的水平距离在对照组平均为(-1.07±0.46)mm,在实验组平均为(0.55±0.42)mm。结论牙列长期缺失或总义齿人工牙重度磨耗致垂直距离明显降低时,其颞下颌关节凹有向前改建的趋势。Objective To investigate the morphologic characteristics of glenoid fossae of edentulons patients with different vertical dimensions. Methods 30 edentulons patients（ 16 males, 14 females） were selected and divided into two groups according to edentulousness, restoration periods and different vertical dimensions. Bilateral Schuller＇s radiographs were made of each subject at their jaws＇ rest position. The distance from O＇ point （the center of glenoid fossa） to O point on the X axis was measured and analysed. Results The average distance between O＇ and O point was （0.55 ± 0.42）ram in the experimental group while it was （ - 1.07 ± 0.46）mm in the control group. The difference was found significant between the two groups. Conclusion The study showed that the fossae are remodelling more anteriorly when the edentulous time becomes longer and the vertical dimension becomes much lower as a result of severe attrition of complete dentures.

关 键 词：无牙颌 总义齿 垂直距离 颞下颌关节凹 

分 类 号：R783.4[医药卫生—口腔医学]