顎関節内障と咀嚼筋筋活動の左右差との関連

颞下颌关节紊乱与咀嚼肌活动左右差异的关系

• 批准号: 10771182
• 负责人: 宮本 圭介
• 金额: $ 1.09万
• 依托单位: Hiroshima University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Encouragement of Young Scientists (A)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-10771182/
• 关键词: 咀嚼筋; 筋電図; 左右差; 顎関節内障; 顎変形症; 咬筋; 側頭筋; 長時間記録; 筋活動; 顎顔面形態

顎関節円板の位置異常や下顎頭の変形ならびに吸収と、顎顔面の非対称の出現には密接な関係があることが多くの臨床研究によって示唆されている。本研究では、顎顔面の非対称を有する顎変形症患者を対象として、平常生活時における咬筋および側頭筋前腹の筋活動を長時間にわたって記録し、その活動様相ならびに左右差を詳細に解明することとした。平成10年度に、新たに考案した筋活動解析方法が、電極の貼付位置の影響を最小限にし、十分に長時間記録の再現性を有することを確認した。この筋活動解析方法では、得られた筋活動の積分値を98Nの咬合力が1秒間作用したときの活動量によって基準化した。さらに、各計測値について右側の値から左側の値を引いたものと両側の合計値との比からasymmetry index(AI)を算出した。平成11年度には、15人の顎変形症患者と15人の対照者において、日中(142分、食事時間も含む)と睡眠時(142分)の長時間筋活動を記録し、それぞれ両側の咬筋および側頭筋前腹から得られたAIを比較した。1.患者群の基準化した筋活動量は、咬筋ではすべての期間で、側頭筋では日中において、対照群より有意に低い値を示した。2.患者群のAIは、対照群と比較して、咬筋では睡眠時に有意に小さく、側頭筋では日中と睡眠時に有意に大きな値を示した。3.患者群と対照群の歯の接触面積と顎顔面形態の計測値には有意差が認められたが、両者とAIとの間には有意な相関関係は認められなかった。以上のことから、顎変形症患者では、特に側頭筋前腹の筋活動の左右差が食事時間帯を除いた他の平常時や睡眠時において大きいことが明らかとなった。しかし、咀嚼筋活動の左右差ならびに歯の接触状態と骨格的不正との間に直接的な関連は認められず、咬合干渉や下顎位の不安定などがmultifactorialに顎顔面の変形、顎関節内障の発症に関わっていることが示唆された。

The position of the board is often in the shape of the suction, the surface is not said to be close contact, close contact, multi-bed research, instigation and instigation. In this study, it is reported that the patients with dysphagia are suffering from dysphagia. In daily life, they do the exercise of abdominal muscles for a long time in front of their tendons. In this study, it is reported that the patients with dyspepsia are suffering from dyspepsia. In Pingcheng, the analytical method for the activities of the annual and new exams, the minimum limit of the location of the computer, and the confirmation of the information in a ten-minute period of time. The analytical method of prestressing activity was used to obtain the positive score of 98 N occlusal force within 1 second. The calculation is based on the asymmetry index (AI) calculation. In Pingcheng, there were 15 patients with dysphagia and 15 patients with dysphagia in Pingcheng in November, and 15 patients who took care of each other had an exercise record during the middle of the day (142pm, time to eat) and sleep (142min). The activity records were recorded, and the abdominal muscles of 15 patients with dysphagia in Pingcheng City were significantly higher than those in the abdomen of Pingcheng City. 1. In the patient group, the amount of muscle activity, the amount of muscle activity, the amount of two。 The patient group AI, the light group comparison, the tendon bite sleep time intended to be small, and the sleep time in the middle of the day intended to show that the sleep time was large. 3. According to the patient group, the contact surface, the contact surface, the surface shape, the surface shape, the contact surface, the contact surface, the contact The above symptoms, dysphagia patients, special muscles in the front of the abdominal muscles, the difference between the left and right sides of the abdominal muscles, the difference between the left and right sides of the abdominal muscles, the difference between the left and right sides of the abdominal muscles, the difference between the left and right sides of the abdominal muscles, the difference between the left and right sides of the abdominal muscles, the difference between the left and right sides of the abdominal muscles, the difference between the left and right sides of the abdominal muscles, the difference between the left and right sides of the abdominal muscles, the difference between the left and right sides of the abdominal muscles, the difference between the left and right sides of the abdominal muscles, the difference between the left and right sides of the abdominal muscles, and the difference between the left and right sides of the abdominal muscles in front of the muscles. There is a difference in the movement of chewable tendons and chewable tendons between left and right. The movement of chewing tendons is different from the left and right sides of the chewable tendons. There is a direct contact between the teeth and the bone, the lower position of the occlusal joint, the shape of the multifactorial, the shape of the cataract, the cataract and the cataract.