Tschernitschek H, Feistner H
Medizinischen Hochschule Hannover.
Dtsch Stomatol (1990). 1991;41(8):284-6.
The coordination of masseter muscle contraction is inseparably wrapped up in the occlusal elements. This study measured bilaterally the masseter muscle activity of 22 subjects without temporomandibular joint disease. The EMG recordings of the left and the right masseter muscles were repeated 20 times to test symmetry, reproducibility and appearance of silent periods. In 6 subjects the beginning of the muscle contraction showed laterality characteristics depending on handedness. The complex processes of recorded mandibular movements showed more biological variations than the recording patterns of occlusal indicator foils may disclose. That indicates the possibility of pseudocontact markings. The occluding surfaces therefore should allow free mandibular movements.
咬肌收缩的协调性与咬合因素紧密相连。本研究对22名无颞下颌关节疾病的受试者双侧咬肌活动进行了测量。对左右咬肌的肌电图记录重复20次，以测试对称性、可重复性和静息期的出现情况。在6名受试者中，肌肉收缩的开始表现出取决于利手的偏侧性特征。记录的下颌运动的复杂过程显示出比咬合指示剂箔片的记录模式所揭示的更多的生物学变异。这表明存在假接触标记的可能性。因此，咬合面应允许下颌自由运动。
