Alteration in the bite force and EMG activity with changes in the vertical dimension of edentulous subjects.
Alteration in the bite force and EMG activity with changes in the vertical dimension of edentulous subjects.
复制标题
无牙颌受试者的咬合力和肌电图活动随垂直尺寸的变化而变化。
DOI：
10.1111/j.1365-2842.1996.tb00861.x
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发表时间：
1996
影响因子：
2.9
通讯作者：
T. Hamada
中科院分区：
文献类型：
--
作者：
T. Morimoto;H. Abekura;H. Tokuyama;T. Hamada
对10名无牙颌患者在7个不同垂直颌位上，以牙合垂直径（OVD）为界，研究了咬合力和合颌肌肌电活动。当咬肌肌电活动保持在恒定值（40%和20%的最大活动在OVD），咬合力增加成比例的垂直尺寸的增加。另一方面，当咬合力保持在恒定值（4 kg和8 kg）时，下颌闭合肌肉的EMG活动减少，垂直尺寸增加。这些结果表明，OVD不是获得咬合力最有效发挥的位置。
The bite force and EMG activity of jaw closing muscles were studied at seven different vertical jaw positions around the occlusal vertical dimension (OVD) in 10 edentulous subjects. When the masseteric EMG activity was maintained at constant values (40% and 20% of the maximum activity at the OVD), the bite force increased in proportion to increase of the vertical dimension. On the other hand, when the bite force was maintained at constant values (4 kg and 8 kg), the EMG activities of the jaw closing muscles decreased, with an increase of the vertical dimension. These results indicate that the OVD is not the position at which the most efficient exertion of the bite force is obtained.