The relationship between electromyograph and energy metabolism in masseter mucles of TMD patients

TMD患者咬肌肌电图与能量代谢的关系

• 批准号: 06671939
• 负责人: YAMAGUCHI Taihiko
• 金额: $ 1.34万
• 依托单位: HOKKAIDO 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: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06671939/
• 关键词: ^<31>P-MRS; Massseter Muscle; Electromyograph; Muscle Fatigue; Energy Metabolism; Temporomandibular Disorder; 咀嚼リズム

The purpose of this study was to verify the relationship between electromyograph (EMG) and energy metabolism in masseter mucles of TMD patients. The EMG data were compared with energy metabolism data analyzed by 31P-MRS (Magnetic Resonance Spectroscopy).The results were as follows ;1. Before and after fatigue-loading, the power spectral analysis of EMG showed the similar tendency to 31P-MRS analysis. It was suggested that the power spectral analysis of EMG might reveal the state of muscle fatigue and energy metabolism in masseter muscle.2. In the chewing rhythm analysis by EMG,the mean of CV (coefficiency of variation) in TMD patients suffering from pain and contracture of masseter muscles was higher than that in normal subjects. But there was little correlation between the result of CV analysis and that of 31P-MRS analysis.3. The mean of interval/cycle time ratio in TMD patients suffering from pain and contracture of masseter muscles was higher than that in normal subjects. The result of interval/cycle time analysis was correlative with the result of energy metabolism analysis by 31P-MRS.4. In one TMD patient, 31P-MRS analysis showed improvement of muscle fatigue after treatments, but interval/cycle time ratio was not changed evidently. In this patient, the ratio before treatment was almost in nomal range, because the border of burst was not obvious and the duration of burst was enlarged abnomally. After treatment the border of burst became clear and the burst shape became normal. This results suggest that the analysis of interval/cycle time ratio must be done together with the burst shape analysis.

这项研究的目的是验证TMD患者咬肌肌肉粘膜中肌电图（EMG）与能量代谢之间的关系。将EMG数据与通过31p-MRS分析的能量代谢数据（磁共振光谱）进行了比较。结果如下； 1。疲劳加载前后，EMG的功率谱分析显示出与31p-MRS分析的类似趋势。有人提出，EMG的功率谱分析可能揭示了肌肉肌肉中肌肉疲劳和能量代谢的状态。2。在EMG的咀嚼节律分析中，患有咬伤肌肉肌肉疼痛和肾脏染色的TMD患者的简历（变异系数）的平均值高于正常受试者的平均值。但是，CV分析的结果与31p-MRS分析的结果之间几乎没有相关性。3。在疼痛和肌肉肌肉疼痛的TMD患者中，间隔/周期时间比的平均值高于正常受试者。间隔/周期时间分析的结果与31p-Mrs.4的能量代谢分析结果相关。在一名TMD患者中，31p-MRS分析显示治疗后肌肉疲劳的改善，但显然不会改变间隔/周期时间比。在该患者中，治疗前的比率几乎处于名义范围内，因为爆发的边界并不明显，并且爆发的持续时间在异常上增加。处理后，爆发的边界变得清晰，爆发形状变得正常。该结果表明，必须与爆发形状分析一起进行间隔/周期时间比的分析。

项目成果

石山司: "咀嚼筋の筋疲労の定量化の試み-^<31>P-MRS(^<31>P-magnetic resonance spectroscopy)による筋エネルギー代謝分析の応用-" 日本補綴歯科学会雑誌. 38(91回特別号). 48-48 (1994)

Tsukasa Ishiyama：“尝试量化咀嚼肌的肌肉疲劳 - 使用 P-MRS（^<31>P-磁共振波谱法）进行肌肉能量代谢分析”日本修复医学会杂志 38（第 91 期特刊）。 48-48 (1994)