Tachibana N, Yamanaka K, Kaji R, Nagamine T, Watatani K, Kimura J, Shibasaki H
Department of Brain Pathophysiology, Kyoto University School of Medicine, Japan.
Sleep. 1994 Sep;17(6):555-8.
A 59-year-old man with temporomandibular joint pain/dysfunction syndrome presented with a long history of nocturnal bruxism. All-night polysomnographic recordings with video monitoring showed episodes of teeth grinding or clenching occurring exclusively during rapid eye movement (REM) sleep, which were often associated with movements of the hands and fingers and/or brief vocalization. Throughout REM sleep, there was excessive phasic chin electromyographic twitching, without increased tone, and also excessive phasic electromyographic twitching in multiple muscle sites. The patient maintained a normal nonrapid eye movement-REM cycle, but showed increased REM density. Polysomnographic characteristics suggested that there may be a common pathophysiology in a certain type of sleep bruxism and the REM sleep behavior disorder. Sleep bruxism seen in this case is concluded to be a manifestation of subclinical REM sleep behavior disorder.
一名患有颞下颌关节疼痛/功能障碍综合征的59岁男性，有长期夜间磨牙史。整夜多导睡眠图记录并伴有视频监测显示，磨牙或紧咬牙发作仅发生在快速眼动（REM）睡眠期间，常伴有手部和手指运动和/或短暂发声。在整个REM睡眠期间，存在过度的相位性颏部肌电图抽搐，但肌张力未增加，多个肌肉部位也存在过度的相位性肌电图抽搐。患者维持正常的非快速眼动-快速眼动睡眠周期，但快速眼动睡眠密度增加。多导睡眠图特征表明，某类睡眠磨牙症和快速眼动睡眠行为障碍可能存在共同的病理生理学机制。该病例中所见的睡眠磨牙症被认为是亚临床快速眼动睡眠行为障碍的一种表现。
