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睡眠時に誘発される咀嚼筋の持続性収縮と顎関節痛に関する検討-下顎側方偏位者を対象として-

睡眠时咀嚼肌持续收缩与颞下颌关节疼痛的研究 - 针对下颌外侧偏患者 -

基本信息

批准号：
07672212
负责人：
藤田幸弘
金额：
$ 1.6万
依托单位：
Tokyo Medical and Dental University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至无数据
项目状态：
已结题

项目摘要

顎関節症は歯科領域における第3の疾患とされ、その発症メカニズムの解明は急務な課題である。申請者は、顎関節症状の中でも、特に問題となる顎関節痛に着目し、下顎側方偏位といった不正咬合に睡眠時の不随意な咀嚼筋の持続性収縮が加わることで果して顎関節痛が発現するのか否かを調べるために、以下のような研究を行った。下顎側方偏位を有する成人男子6名を被験者とした。内訳は顎関節痛を現症として有するもの3名(有症状者群)、顎関節症状を有しないもの3名(健常者群)であった。そして、これらの被験者の下顎側方偏位量を検討し、さらにそれらの睡眠時の脳波、眼球運動図、咀嚼筋筋電図(左右の側頭筋・前部・側頭筋・後部、咬筋、顎二腹筋より表面電極にて双極導出)、咬合力(厚さ1mmの感圧導電性エラストマーシートを応用したイナストマーPX-128により計測)を同時記録し、誘発される持続的筋収縮の発現パターンを両群において比較検討し、以下のような結果が得られた。1.有症状者の下顎側方偏位量の方が健常者のそれに比べて大きかった。2.有症状者群、健常者群ともに、睡眠段階が浅化する際に、閉口筋群に一過性の筋収縮が認められ、特に咬筋の筋収縮パターンが咬合力の発現パターンに一致していた。しかし、その持続時間は有症状者群の方が長くなる傾向が認められた。3.visual analogue scale(VAS)により表示させた顎関節の痛みの量と咬筋筋収縮持続時間との間には、筋収縮持続時間が大きい際にVAS値も大きくなる傾向がみられた。以上より、下顎の側方偏位という不正咬合要素に睡眠時に誘発される咬筋の持続的筋収縮というものが加わることで顎関節痛が惹起されるという顎関節痛発現の1つの機構の存在が示唆された。

In the field of medical treatment and treatment, the third class of disease diagnosis and treatment can be used to understand the problems of emergency services. Applicants, symptoms, symptoms, There are 6 adult men in the lower square deviation. There were 3 patients with symptoms (patients with symptoms) and 3 patients with symptoms (normal people). The deviation of the lower square, the wave during sleep, the movement of the eyeballs, the chewing tendons (the front and back of the left and right tendons, the bites of the tendons, the surface electrodes of the two-belly tendons), The bite force (thick 1mm, electrical, mechanical, mechanical, electrical, mechanical, mechanical, and so on.) the bite force is recorded at the same time, and the results are satisfactory. 1. For those with symptoms, the deviation of the prescription is larger than that of the normal. two。 A group of people with symptoms, a group of normal people, a group of people with superficial symptoms during sleep, a group of muscles in the mouth, a group of muscles, a group of muscles, a group of people with symptoms, a group of normal people, a group of people with symptoms, a group of normal people, a group of people with symptoms, a group of normal people, a group of people with symptoms, a group of normal people, a group of people with symptoms, a group of normal people, a group of people with symptoms, a group of normal people, a group of people with symptoms, a group of normal people, a group of people with symptoms, a group of people with symptoms, a group of normal people, a group of people with symptoms, a group of normal people, a group of people with symptoms of symptoms, normal people, superficial symptoms of sleep, dyspnea, oral tendons, bites, bites, bites, A group of people with symptoms during a long period of time should make a long-term effort to make love to others. The 3.visual analogue scale (VAS) device indicates that the amount of pain caused by the tendon bite, the time it takes to hold the tendon, the time it takes to hold the tendon, and the time it takes to hold the tendon, the VAS, the pain, the pain. The above and lower occlusal factors are not correct. During sleep, the tendons that bite the tendons and the muscles that hold the tendons are not correct, and the pain is caused by the pain.