Determination of daytime clenching events in subjects with and without self-reported clenching
Determination of daytime clenching events in subjects with and without self-reported clenching
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DOI：
10.1111/joor.12087
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发表时间：
2013-10-01
影响因子：
2.9
通讯作者：
Ishibashi, K.
中科院分区：
文献类型：
--
作者：
Fujisawa, M.;Kanemura, K.;Ishibashi, K.
为了确认白天咬紧牙关自我意识的有效性，使用表面肌电图记录确定了咬紧牙关行为的特定肌电图 (EMG) 特征。记录 13 名自我报告咬牙的受试者（咬牙组：27.5 +/- 3.8 岁）和 12 名未自我报告咬牙的受试者（对照组：28.6 +/- 7.1 岁）的颞肌肌电图 5 小时。所有肌电图数据均记录并存储在便携式肌电图设备上。该设备的大小与助听器相似，适合在不限制日常活动的情况下记录日间肌电图。紧握事件定义为肌肉活动超过最大自主收缩的 10%。此外，还进行同步语音记录，以将相应的肌电图事件识别为功能性或非功能性。咬牙组和对照组的咬牙事件平均次数分别为 192.8 +/- 228.8 次和 24.8 +/- 26.5 次（P < 0.05，Mann-Whitney U 检验）；各组之间功能事件的数量没有显着差异。由于各组之间咬牙事件的数量存在显着差异，因此自我报告的白天咬牙次数被认为是清醒磨牙症的可靠筛查参数。
To confirm the validity of self-awareness of daytime clenching, specific electromyogram (EMG) characteristics of clenching behaviour were determined using surface EMG recordings. Temporal muscle EMGs were recorded for 5 h in 13 subjects with self-reported clenching (clenching group: 27.5 +/- 3.8 years old) and 12 subjects without self-reported clenching (control group: 28.6 +/- 7.1 years old). All EMG data were recorded and stored on a portable EMG apparatus. The device was similar in size to a hearing aid, and suitable to record daytime EMG without restriction of daily activities. A clenching event was defined as muscle activity exceeding 10% of the maximum voluntary contraction. Furthermore, simultaneous voice recording was also performed to identify the corresponding EMG event as functional or parafunctional. The mean number of clenching events was 192.8 +/- 228.8 and 24.8 +/- 26.5 in the clenching and the control groups, respectively (P < 0.05, Mann-Whitney U-test); the number of functional events was not significantly different between the groups. Because there was a significant difference in the number of clenching events between the groups, self-reported daytime clenching is considered to be a reliable screening parameter for awake bruxism.