Validity of single-channel masseteric electromyography by using an ultraminiature wearable electromyographic device for diagnosis of sleep bruxism
Validity of single-channel masseteric electromyography by using an ultraminiature wearable electromyographic device for diagnosis of sleep bruxism
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DOI：
10.1016/j.jpor.2019.04.003
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发表时间：
2020-01-01
影响因子：
3.6
通讯作者：
Satoh, Kaoru
中科院分区：
文献类型：
--
作者：
Maeda, Masana;Yamaguchi, Taihiko;Satoh, Kaoru
目的：本研究的目的是阐明单通道肌电图（EMG）评估睡眠磨牙症（SB）的有效性和最佳灵敏度和特异性的临界值。方法：选取20例临床诊断为SB的志愿者，将仅使用可穿戴式肌电图进行的咬肌肌电图评估与使用多导睡眠图（PSG-AV）进行的咬肌肌电图评估进行比较。从单通道肌电图记录的肌电活动中，通过突发单元（EMG-burst-all）选择持续时间为0.25 s或更长，超过基线幅度两倍的突发。此外，从所有肌电爆发中，选择超过最大自主收缩值（肌电爆发-5%，肌电爆发-10%，肌电爆发-20%）5-20%的爆发。以发作为单位，通过单通道肌电图（EMG-episodes）选择相性、强直性和混合性发作。在肌电图发作数中，通过PSG-AV评估选择SB的参考标准发作数（PSG-episodes）。结果：16例患者经PSG-AV （PSG-episodes/h >2）诊断为bruxers。单通道肌电与PSG-AV评价指标除肌电-burst-20%/h外，在一个突发单位和一个发作单位上均存在显著相关性。当睡眠bruxers的肌电信号集数/h截断值为5.5/h时，敏感性和特异性均为100%。以突发单位为变量，EMG-burst-all/h和EMG-burst-5%具有较高的敏感性和特异性。结论：结果表明，如果采用适合单通道肌电图的截止值，单通道肌电图对SB的诊断是有效的。(C) 2019年日本口腔修复学会。Elsevier Ltd.出版。版权所有。
Purpose: The purpose of this study was to clarify the validity of assessment of sleep bruxism (SB) by using single-channel electromyogram (EMG) and a cut-off value with optimum sensitivity and specificity.Methods: The subjects were twenty volunteers with clinical diagnosis of SB. Assessment by masseteric EMG data only by using a wearable EMG was compared with reference standard assessment by masseteric EMG data using polysomnography with audio-visual recording (PSG-AV). From EMG activities recorded by single-channel EMG, bursts of more than two times the baseline amplitude with a duration of 0.25 s or more were selected by a burst unit (EMG-burst-all). Furthermore, from EMG-burst-all, bursts that were more than 5-20% of the maximum voluntary contraction value (EMG-burst-5%, EMG-burst-10%, EMG-burst-20%) were selected. By an episode unit, phasic, tonic, and mixed episodes were selected by single-channel EMG (EMG-episodes). Among the EMG-episodes, further, reference standard episodes of SB (PSG-episodes) were selected by PSG-AV assessment.Results: Sixteen subjects were diagnosed as bruxers based on PSG-AV (PSG-episodes/h >2). By a burst unit and an episode unit, there were significant correlations between assessment variables of SB by single-channel EMG and PSG-AV except for EMG-burst-20%/h. When the cut-off value in EMG-episodes/h was 5.5/h for sleep bruxers, both sensitivity and specificity were 100%. As for variables by a burst unit, EMG-burst-all/h and EMG-burst-5% had higher values of sensitivity and specificity.Conclusions: The results suggested that single-channel EMG is valid for diagnosis of SB if a cut-off value that is appropriate for single-channel EMG is used. (C) 2019 Japan Prosthodontic Society. Published by Elsevier Ltd. All rights reserved.