The Study on the Mechanism of Temporomandibular Joint Sound.

颞下颌关节发声机制的研究。

• 批准号: 01571067
• 负责人: NAKANO Masanori
• 金额: $ 1.34万
• 依托单位: The University of Tokushima
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01571067/
• 关键词: Temporomandibular joint sound; Clicking; Mandibular movement; Lateral pterygoid muscle; Temporomandibular disorders; 顎関節症; 顆頭運動; 外側翼突筋筋電図

The purpose of this study was to develop a diagnostic system of jaw function which is able to record jaw motion with 6 degrees of freedom, multichannel EMG of jaw muscle including inferior lateral pterygoid muscle and temporomandibular sound simultaneously ; and to investigate the mechanism of TMJ sound with this diagnostic system. In the first years of this project, an intraorally recording method of inferior lateral pterygoid muscle activity with fine wire electrodes was established after a preliminary study in cadavers. Jaw motion with 6 degrees of freedom and EMG activity of inferior lateral pterygoid muscle were recorded simultaneously. This method had never before been attempted in the world. Eignt subjects were studied using this system with the following results :1. When the activity of inferior lateral pterygoid muscle was observed according to the forward translation of the condyle, the amount of its activity was influenced by the condyle's translation speed or position.2. An exception was observed during the slowest opening movement of mandible. The onset of activity of the lateral pterygoid muscle occurred at or before the beginning of forward translation of the ipsilateral condyle.Finally, TMJ sound recording method was established and the jaw function diagnostic system was completed. The diagnostic system is efficient in investigating the presence of condyle path path deflection, change of speed of condylar movement during clicking and the TMJ sound mechanisms as well.

本研究的目的是研制一种能同时记录6个自由度颌骨运动、包括翼下外肌在内的颌骨肌肉多通道肌电和颞下颌关节音的颌骨功能诊断系统，并利用该系统探讨颞下颌关节音产生的机制。在本计画的最初几年，我们在尸体上进行初步研究后，建立了一种用细线电极记录翼下外肌活动的口内记录方法。同时记录6个自由度的下颌运动和翼下外肌肌电活动。这种方法在世界上从未尝试过。利用该系统对8名被试进行了研究，结果如下：1.根据髁突向前平移观察翼下外肌的活动时，其活动量受髁突平移速度或位置的影响。在下颌骨最慢张开运动期间观察到一个例外。翼外肌的活动起始于同侧髁突开始前移时或之前。最后，建立了颞下颌关节声音记录方法，完成了颌骨功能诊断系统。该诊断系统能有效地研究髁突运动轨迹的偏转、叩击时髁突运动速度的变化以及颞下颌关节发声机制。

项目成果

Masanori, Nakano et al.: "Condylar movements during habitual movement of tongue and jaw" Journal of Dental Research. 69 : Special Issue. 333 (1990)

Masanori、Nakano 等人：“舌头和下巴习惯性运动期间的髁突运动”《牙科研究杂志》。

Keisuke, Nishigawa, Masanori, Nakano, et al: "Inferior lateral pterygoid muscle activity in mandibular border movement" Journal of Dental Research. 69 : Special Issue. 149 (1990)

Keisuke、Nishikawa、Masanori、Nakano 等人：“下颌缘运动中的下外侧翼状肌活动”《牙科研究杂志》。

M.Nakano: "Condylar movements during habitual movement of tongue and jaw" Journal of Dental Research. 69(Special Issue). 333 (1990)

M.Nakano：“舌头和下巴习惯性运动期间的髁突运动”《牙科研究杂志》。

Keiji, Ohi, Masanori, Nakano, et al.: "An Analysis of Temporomandibular Joint Sound using the Jaw Function Diagnostic System"

Keiji、Ohi、Masanori、Nakano 等人：“使用颌功能诊断系统分析颞下颌关节声音”

Ryutaro, Ueda, Masanori, Nakano, et al.: "Measurements of jaw movement with 6 degrees of freedom and activities of inferior lateral pterygoid muscle" Proceeding of Japanese Society of Stomatognathic Function. 8. 141-148 (1990)

Ryutaro、Ueda、Masanori、Nakano 等人：“6 自由度下颌运动和下翼外肌活动的测量”日本口颌功能学会论文集。