The effect of changing the occlusal contact in EMGs during ski performance

滑雪表演期间改变肌电图咬合接触的影响

• 批准号: 11672043
• 负责人: YASUDA Yoshitaka
• 金额: $ 2.3万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11672043/
• 关键词: EMG; Masticatory muscles; Ski; Occlusal interference; 体平衡; 咬合接触状態

The purpose of this study was to investigate the effect of changing the occlusal contact on ski performance, in which body balance needs controlling. In such a performance, how the head is restricted during the body motion is generally considered as one of the most important things. Therefore, we recorded EMGs from muscles of maxillofacial area and the neck, before and after changing occlusal contacts. EMG recordings during skiing were obtained with a small portable PC card recorder. The subjects were males with normal occlusion.The ski runs were performed through between 7 ski poles in a distance of 100 meters. The body motion during skiing was recorded by the use of a small portable video camera, with simultaneous EMG recordings from masseter muscles, temporal muscles, and sternocleidomastoid muscles on both sides. After each subject had three trials, the metal cap, made for the individual subject to change occlusal contact condition, was set on the upper right molar, and three trials were performed.Results. Activity pattern of EMGs of temporal muscles and sternocleidomastoid muscles changed and trials took more time when the cap for changing occlusal condition was set.

本研究旨在探讨在需要控制身体平衡的滑雪运动中，改变咬合接触对滑雪成绩的影响。在这样的表演中，头部在身体运动中如何被限制通常被认为是最重要的事情之一。因此，我们记录了肌肉的肌电图颌面部和颈部，前和后改变咬合接触。在滑雪过程中的肌电图记录获得了一个小型便携式PC卡记录器。受试者为正常咬合的男性，滑雪道在100米的距离内通过7根滑雪杆进行。在滑雪过程中的身体运动记录使用一个小型便携式摄像机，同时肌电图记录咬肌，颞肌，胸锁乳突肌两侧。每名受试者进行3次试验后，在右上磨牙上放置金属帽，改变咬合接触状态，进行3次试验。改变咬合状态帽设置后，颞肌和胸锁乳突肌肌电活动模式发生改变，试验时间延长。

项目成果

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K.Yashiro et al.: "Effects of food consistency on smoothness of mandibular movement in human mastication."Dentistry in Japan. Vol.37. 78-80 (2001)

K.Yashiro 等人：“食物稠度对人类咀嚼中下颌运动平滑度的影响。”日本牙科。

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