正常人开闭口位颞颌关节盘磁共振影像测量分析

华西口腔医学杂志

正常人开闭口位颞颌关节盘磁共振影像测量分析

曹鸿涛,王美青,刘满生,颜朝云

710032 第四军医大学口腔医学院(曹鸿涛,王美青),第四军医大学附属西京医院(刘满生),解放军厦门174医院 (颜朝云)

收稿日期:2002-08-25 修回日期:2002-08-25 出版日期:2002-08-20 发布日期:2002-08-20
基金资助:
本课题为高等学校骨干教师资助计划资助项目(编号2000)

Imagine Analysis of Temporomandibular Joints of Normal Subjects at Opening and Closing Positions with Magnetic Resonance Imaging Technique

Cao Hongtao, WangMeiqing, Liu Mansheng et al.

Cao Hongtao, WangMeiqing The StomatologyCollege,the Fourth MilitaryMedicalUniversity Liu Mansheng Xijing AffiliatedHospital, the Fourth MilitaryMedicalUniversity Yan Chaoyun The MilitaryXiamen174 Hospital

Received:2002-08-25 Revised:2002-08-25 Online:2002-08-20 Published:2002-08-20

摘要/Abstract

摘要：

目的:探讨正常人颞颌关节开、闭口位关节盘的形态变化特点及意义。方法:对9名健康男性大学生(21~23 岁),用超导磁共振仪,小视野线圈,分别采用左右侧卧位,拍摄双侧TMJ矫正矢状位质子加权开口位和闭口位不同层面的MRI影像,层厚3 mm,选取其中能清楚反映关节盘形态的166张图像用电子测量尺测量其关节盘的断面面积和周长。结果:正常人颞颌关节盘闭口位影像呈窄长形,开口位影像呈哑铃形;开口位影像断面面积明显大于闭口位面积(P<0101),断面周长二者间无明显差别(P>0105)。结论:正常人开口状态下颞颌关节盘形态较闭口时明显变粗,可能是该两种状态下关节内压变化的反映。

关键词: 颞颌关节, 关节盘, 磁共振, 正常人

Abstract:

Objective:The aim of this study was to investigate the features of discs of temporomandibular joints (TMJs), during the joint was in the closing and opening positions.Methods:A total of 9 male university students, 21~23 years old, withoutTMJD symp- tomswere selected for this study, and their bilateral TMJs were examined separately with Siemens 63-SP4000 super conductive MRI system (Germany). The parameters of MRI were 10 cm surface coil, proton-weighted, oblique sagittal section with 3 mm thick. Totally 166 imagineswere obtained including closing and opening positions. Both the area and circle length of the disc sec- tions were measured with the electronic ruler.Results:The disc on the oblique section showed a narrowimagine in the closing po- sition, while a dumbbell-shape in the opening position. The shape of the disc demonstrated larger in the opening position than that in the closing position (P<0.01). The circle length of the disc in the above positions didn.t showed significant difference (P> 0.05).Conclusion:The shape of the TMJ disc in normal subjects changed a lot in the oblique sagittal section from closing to opening positions, which might be related with the internal pressure changes between these two positions.

Key words: temporomandibularjoint, TMJdiscnormalsubject, magneticresonanceimagine

曹鸿涛,王美青,刘满生,颜朝云. 正常人开闭口位颞颌关节盘磁共振影像测量分析[J]. 华西口腔医学杂志.

Cao Hongtao, WangMeiqing, Liu Mansheng et al.. Imagine Analysis of Temporomandibular Joints of Normal Subjects at Opening and Closing Positions with Magnetic Resonance Imaging Technique[J]. West China Journal of Stomatology.

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