Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
Department of Masticatory Science, Faculty of Dentistry, Mahidol University, Bangkok, Thailand.
J Oral Rehabil. 2023 Sep;50(9):822-829. doi: 10.1111/joor.13468. Epub 2023 Apr 26.
Sleep bruxism (SB) and awake bruxism (AB) are masticatory muscle activities that are rarely assessed in the same individuals and are thought to be associated with different behaviours.
To investigate whether individuals engaging in SB also engage in AB, that occurs during rest and during stress-related activity, and to investigate whether SB and AB are associated with different characteristics.
Females with myofascial pain (N = 122) and non-myofascial pain controls (N = 46) were evaluated for SB events and for AB events at rest and AB during stress-related activity, using electromyographic (EMG) recordings and a standardised scoring of bruxism events. The joint distributions between SB and AB events and EMG activity were evaluated, and the characteristic qualities of SB and AB were assessed.
Neither SB event rates nor the EMG activity associated with those events was associated with AB events rates or EMG activity, either at rest or during stress-related activity. On the contrary, event rates and EMG activity when awake and at rest were positively associated with events and activity during stress-related activity. SB was characterised mainly by grinding, while AB was characterised mainly by clenching.
Sleep bruxism and awake bruxism do not tend to occur in the same individuals.
睡眠磨牙症（SB）和清醒磨牙症（AB）是咀嚼肌活动，很少在同一人群中进行评估，并且被认为与不同的行为有关。
研究是否存在同时发生 SB 和 AB 的个体，AB 发生在休息和与应激相关的活动期间，以及研究 SB 和 AB 是否与不同的特征相关。
使用肌电图（EMG）记录和磨牙症事件的标准化评分，对患有肌筋膜疼痛的女性（N=122）和非肌筋膜疼痛对照组（N=46）进行 SB 事件和休息时 AB 事件以及与应激相关活动时的 AB 事件评估。评估了 SB 和 AB 事件以及 EMG 活动之间的联合分布，并评估了 SB 和 AB 的特征质量。
无论是 SB 事件率还是与这些事件相关的 EMG 活动，都与休息时或与应激相关的活动中的 AB 事件率或 EMG 活动无关。相反，清醒和休息时的事件率和 EMG 活动与与应激相关的活动中的事件和活动呈正相关。SB 主要表现为磨牙，而 AB 主要表现为紧咬牙。
睡眠磨牙症和清醒磨牙症倾向于不在同一人群中发生。
