Effects of a bite-raising splint on the duration of the chewing cycle and the EMG activities of masticatory muscles during chewing in freely moving rabbits.
Effects of a bite-raising splint on the duration of the chewing cycle and the EMG activities of masticatory muscles during chewing in freely moving rabbits.
复制标题
咬合夹板对自由活动兔子咀嚼周期持续时间和咀嚼过程中咀嚼肌肌电图活动的影响。
DOI：
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发表时间：
1998
影响因子：
2.9
通讯作者：
A. Yamashita
中科院分区：
文献类型：
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作者：
Y. Matsuka;Y. Kitada;Y. Mitoh;A. Adachi;A. Yamashita
将0.5mm厚的金属咬合提升夹板固定在家兔下颌两侧的上磨牙上。研究了这些夹板对自由活动兔咀嚼软食物（面包）时咀嚼行为的影响。我们记录了咬肌和二腹肌的肌电图（EMG）。动物表现出咀嚼周期延长，咬肌肌电活动减少，二腹肌肌电活动增加后，引入咬合提高夹板咀嚼。双侧切断上颌神经和下牙槽神经可消除夹板对咀嚼肌活动的影响。这似乎是可能的传入来自口腔感觉感受器的咀嚼行为的变化后，引入咬合夹板负责。
Metal bite-raising splints of 0.5 mm thickness were attached to the upper molar teeth on both sides of the jaw in rabbits. The effects of these splints on masticatory behaviour during the chewing of soft food (bread) by freely moving rabbits were investigated. We recorded electromyograms (EMGs) of the masseter and digastric muscles. The animals exhibited prolongation of the chewing cycle, decreased EMG activity of the masseter muscle and increased EMG activity of the digastric muscle during chewing after introduction of the bite-raising splints. The effects of the splints on the activities of masticatory muscles were abolished by bilateral sectioning of the maxillary and inferior alveolar nerves. It seems likely that afferents from oral sensory receptors were responsible for the changes in masticatory behaviour after the introduction of the occlusal splint.