Influence of variation in jaw posture on sternocleidomastoid and trapezius electromyographic activity.
Influence of variation in jaw posture on sternocleidomastoid and trapezius electromyographic activity.
复制标题
下颌姿势变化对胸锁乳突肌和斜方肌肌电活动的影响。
DOI：
10.1080/08869634.1995.11678061
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Hugo Moya
中科院分区：
文献类型：
--
作者：
C. Zúñiga;R. Miralles;Boris Mena;Rafael Montt;Daniel Moran;H. Santander;Hugo Moya
本研究旨在探讨20例肌源性颅颈下颌功能障碍患者咬合接触方式的变化对肌电活动的影响。通过在左侧胸锁乳突肌和上斜方肌上放置表面电极，在以下情况下进行肌电记录：牙尖间位置；边对边左侧侧接触(同侧)；边对边右侧侧接触(对侧)；边对边突出接触；以及咬合后退接触。在最大随意咬合位置时，两侧肌肉的肌电活动均显著高于牙合接触位，而牙尖间位、同侧、对侧和前伸接触位之间的肌电活动无显著差异。观察到的肌电模式表明，在后牙合接触位置咬合的强度和持续时间越频繁，肌源性颅颈下颌功能障碍患者的这些颈部肌肉的临床症状就越多。
This study was conducted in order to determine the influence of variation in the occlusal contacts on electromyographic (EMG) cervical activity in 20 patients with myogenic cranio-cervical-mandibular dysfunction. EMG recordings during maximal voluntary clenching were performed by placing surface electrodes on the left sternocleidomastoid and upper trapezius muscles in the following conditions: intercuspal position; edge to edge left laterotrusive contacts (ipsilateral); edge to edge right laterotrusive contacts (contralateral); edge to edge protrusive contacts; and retrusive occlusal contacts. A significant higher EMG activity was recorded in both muscles during maximal voluntary clenching in retrusive occlusal contact position, whereas no significant differences in EMG activity were observed between intercuspal position, ipsilateral, contralateral and protrusive contact positions. The EMG pattern observed suggests that a more frequent intensity and duration of tooth clenching in retrusive occlusal contact position could result in more clinical symptomatology in these cervical muscles in patients with myogenic cranio-cervical-mandibular dysfunction.