The study of bruxism - A generator of grinding,influence of masticatory system and material for treatment -

磨牙症的研究 - 磨牙的发生因素、咀嚼系统的影响以及治疗材料 -

基本信息

批准号：
60480415
负责人：
TAKAMATSU Takatsune
金额：
$ 3.78万
依托单位：
Department of periodontology,School of dentistory, Higashi-Nippon-University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1985
资助国家：
日本
起止时间：
1985 至 1986
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-60480415/
关键词：
bruxism grinding muscle activity tooth contact jaw movement 早期接触

项目摘要

The purpose of this investigation was to analyze of clinical signs,electromyographic recording,tooth contact,jaw movements in patients and normal subjects during day or night. Thirty patients with mild or severe bruxism and ten normal subjects were studied.Masticatory muscles activity,tooth contacts and/or jaw movements were synchronously recorded. Telemetory system( 511 systm,Nihon-Koden-Sanei ) were used during leeping,especially when the masticatory muscle activity,tooth contacts recorded. This system were very comfortably recorded without restriction. The results were as follows,1. The patients with bruxism had several clinical signs. Sometimes,the muscle activity at grinding in sleeping was significanttly higher than in voluntary. The duration of muscle activity were conspicuous in one or other muscls on bilateral jaw movements at grinding sleep.2. Tooth contact vibration phase during muscle activity in grinding were obserbed without synchronous audible sounds, though tooth contacts and audible sounds were found ocillatory and synchronously.3. Jaw movements were synchronously induced by the oscillatory muscle activity of anterior temporal. One side muscle activity was ipsilateral to the direction of jaw movement from inter cuspal position.4. Normal subjects without clinical signs were observed long duration of muscle activity during sleeping. The difference of the total duration of muscle activity was not significant between the subjects with and without conscious grinding.5. It was concluded that normal subjects and patients with bruxism had a differnce of modality at muscle activity. Through the factors induced (premature contact) were the products of bruxism,they did not become the clinical signs,muscle activity, tooth contacts and jaw movements.This,nevertheless,remains to be further investigated.

本研究的目的是分析患者和正常受试者白天或夜间的临床体征、肌电图记录、牙齿接触、下颌运动。对30名轻度或重度磨牙症患者和10名正常受试者进行研究，同步记录咀嚼肌活动、牙齿接触和/或下颌运动。睡眠时使用遥测系统（511系统，Nihon-Koden-Sanei），特别是记录咀嚼肌活动、牙齿接触情况时。这个系统录制起来非常舒服，没有任何限制。研究结果如下： 1．磨牙症患者有多种临床症状。有时，睡眠时磨磨时的肌肉活动明显高于随意时。磨牙睡眠时双侧下颌运动的一侧或另一块肌肉的肌肉活动持续时间很明显。2．磨削时肌肉活动时的齿接触振动阶段，虽然发现齿接触和可听声音是振动且同步的，但未观察到同步可听声音。 3．下颌运动是由前颞肌的振荡肌肉活动同步引起的。一侧肌肉活动与牙尖间位置下颌运动方向同侧。4．没有临床症状的正常受试者在睡眠期间观察到长时间的肌肉活动。有意识磨牙与无意识磨牙受试者的肌肉活动总持续时间差异不显着。 5．结论是，正常受试者和磨牙症患者的肌肉活动方式存在差异。通过诱发因素（过早接触）是磨牙症的产物，它们并没有成为临床体征、肌肉活动、牙齿接触和颌运动。但这仍有待进一步研究。