Impaired orofacial motor functions on chronic temporomandibular disorders
Impaired orofacial motor functions on chronic temporomandibular disorders
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DOI：
10.1016/j.jelekin.2014.04.005
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发表时间：
2014-08-01
影响因子：
2.5
通讯作者：
De Felicio, Claudia Maria
中科院分区：
文献类型：
--
作者：
Pimenta Ferreira, Claudia Lucia;Zanandrea Machado, Barbara Cristina;De Felicio, Claudia Maria
由于颞下颌关节紊乱病（TMDs）的康复仍然是一个挑战，因此需要更全面地了解慢性疼痛患者的口面功能。本研究评估了中重度慢性TMD患者的口面功能，包括动态节律活动的表面肌电图（EMG）。据推测，口面运动控制与中重度慢性TMD患者和健康受试者之间存在差异。76名受试者（46名TMD患者和30名对照）回答了TMD严重程度和咀嚼困难的问卷。结果：TMD患者咀嚼困难、口面功能评分差、自由咀嚼时间长、咀嚼肌功能恢复快，咀嚼肌功能恢复快。与健康受试者相比，工作侧和平衡侧的肌肉招募不准确，对称性咀嚼指数（SMI）降低，EMG测试期间的标准化活动增加。SMI、TMD严重程度与口面肌功能评分相关（P < 0.01）。中重度慢性TMD患者口面运动控制改变的特征是单侧咀嚼时口面功能受损和平衡侧肌肉活动增加。康复的影响进行了讨论。(C)2014爱思唯尔有限公司版权所有。
Because temporomandibular disorders (TMDs) rehabilitation continues to be a challenge, a more comprehensive picture of the orofacial functions in patients with chronic pain is required. This study assessed the orofacial functions, including surface electromyography (EMG) of dynamic rhythmic activities, in patients with moderate-severe signs and symptoms of chronic TMD. It was hypothesized that orofacial motor control differs between patients with moderate-severe chronic TMD and healthy subjects. Seventy-six subjects (46 with TMD and 30 control) answered questionnaires of severity of TMD and chewing difficulties. Orofacial functions and EMG during chewing were assessed.Standardized EMG indices were obtained by quantitative analysis of the differential EMG signals of the paired masseter and temporal muscles, and used to describe muscular action during chewing.TMD patients showed significant greater difficulty in chewing; worse orofacial scores; longer time for free mastication; a less accurate recruitment of the muscles on the working and balancing sides, reduced symmetrical mastication index (SMI) and increased standardized activity during EMG test than healthy subjects. SMI, TMD severity and orofacial myofunctional scores were correlated (P < 0.01). Impaired orofacial functions and increased activity of the muscles of balancing sides during unilateral chewing characterized the altered orofacial motor control in patients with moderate-severe chronic TMD. Implications for rehabilitation are discussed. (C) 2014 Elsevier Ltd. All rights reserved.