Ⅲ类固定磁力功能矫治器对颞下颌关节影响的MRI研究

›› 2021, Vol. 41 ›› Issue (12): 1094-1199.

Ⅲ类固定磁力功能矫治器对颞下颌关节影响的MRI研究

韩启蒙¹,尹康²

1. 昆明医科大学附属口腔医院
2. 昆明医科大学附属口腔医院正畸科

收稿日期:2021-06-21 修回日期:2021-08-07 出版日期:2021-12-28 发布日期:2021-12-31
通讯作者: 尹康 E-mail:18987175659@qq.com
基金资助:
省基础研究计划（昆医联合专项）

MRI Study of Type Ⅲ Fixed Magnetic Functional Appliance Effect on Temporalmandibular Joint

¹,Yin Yinkang

Received:2021-06-21 Revised:2021-08-07 Online:2021-12-28 Published:2021-12-31
Contact: Yin Yinkang E-mail:18987175659@qq.com

摘要/Abstract

摘要： 【摘要】目的：研究Ⅲ类固定磁力功能矫治器矫治后颞下颌关节的改建情况。方法：选择15例矫治前经X线头影测量分析，诊断为功能性和骨性Ⅲ类错畸形的患者为研究对象，采用Ⅲ类固定磁力功能矫治器进行治疗，在治疗前后使用MRI评估颞下颌关节的变化。结果：治疗后：1.关节前间隙增大，后间隙减小，关节间隙指数减小，髁突在关节窝内的位置发生向后移位；2.盘髁角、前带盘髁角增大，关节盘在生理范围内前移位，关节盘前带位置的变化与后带位置的变化一致；3.髁突头角增大，髁突前屈；4.节窝后斜面角和关节窝角，差异不显著。结论：固定磁力功能矫治器治疗后生长期Ⅲ类错畸形患者的TMJ发生了适应性改变，固定磁力功能矫治器矫治后髁突向后移位，关节盘前移位，双板区厚度减小，髁突头前屈。

关键词: Ⅲ类功能矫形治疗, 颞下颌关节, 磁力

Abstract: [ABSTRACT] Objective: To study the remodeling of the temporomandibular joint after treatment with fixed magnetic functional appliance. Methods: Fifteen patients diagnosed with functional and bony Class III malocclusion by X-ray cephalometric analysis before treatment were treated with Class III fixed magnetic function appliance.Result: After orthopedic treatment: 1.The anterior space of the joint increases, the posterior space of it decreases, the joint space index decreases, and the position of the condyle process in the articular fossa is shifted backward; 2.The disc condyle angle and the anterior band disc condylar angle increase, the joint disc moves backward within the physiological range, and the change of the position of the anterior band of the joint disc is consistent with that of the position of its posterior band; 3.The angle of the condylar process head is increased, and the condyle process is flexed forwards; 4.There is no significant difference between the angle of the articular fossa posterior bevel and the angle of the articular fossa. Conclusion: Fixed magnetic functional appliance treatment can induce adaptive changes within the physiological range in TMJ in patients with type-Ⅲ malocclusion during the growing period. After correction using fixed magnetic functional appliance the posterior condylar process is displaced backwards, the articular disc is displaced forwards, and the thickness of the bilaminar area is reduced. The condylar process head is flexed forward.

Key words: Temporomandibular joint, Class Ⅲ functional orthopedic treatment, magnetic

中图分类号:

R783.5

韩启蒙尹康. Ⅲ类固定磁力功能矫治器对颞下颌关节影响的MRI研究[J]. 口腔医学, 2021, 41(12): 1094-1199.

Yin Yinkang. MRI Study of Type Ⅲ Fixed Magnetic Functional Appliance Effect on Temporalmandibular Joint[J]. Stomatology, 2021, 41(12): 1094-1199.

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