Nukazawa Shinichi, Yoshimi Hidehiro, Sato Sadao
a Department of Craniofacial Growth and Development Dentistry , Kanagawa Dental University , Yokosuka , Japan.
b Research Institute of Occlusion Medicine , Kanagawa Dental University , Yokosuka , Japan.
Cranio. 2018 Mar;36(2):106-112. doi: 10.1080/08869634.2017.1287232. Epub 2017 Feb 10.
To confirm the relationship between sleep bruxism (SB) and autonomic nervous (AN) activities to elucidate SB physiology.
Subjects included 11 healthy males (mean age, 24.7 ± 2.3 years). These data were recorded in the sleep laboratory using a system composed of a two-axis accelerometer, an infrared camera, electroencephalography, electromyography, and electrocardiography. Time lapse analysis confirmed correlations between AN activity and SB events during sleep in subjects. Relationships between SB strength and length and AN activity were evaluated.
Sympathetic nerve (SN) and parasympathetic nerve (PSN) activities occurred significantly in 93.3% of cases (p < 0.01), with similar predictable patterns during SB. Furthermore, SB length and SN activity in seven of the subjects (four subjects, p < 0.05; three subjects p < 0.01), and PSN and SB muscle activities (% maximum voluntary contraction) in five subjects (four subjects, p < 0.05; one subject, p < 0.01) were significantly correlated.
The authors believe that SB is closely related to SN as well as PSN activities and may control the AN system.
确认睡眠磨牙（SB）与自主神经（AN）活动之间的关系，以阐明睡眠磨牙的生理机制。
研究对象包括11名健康男性（平均年龄24.7±2.3岁）。这些数据在睡眠实验室中使用由双轴加速度计、红外摄像机、脑电图、肌电图和心电图组成的系统进行记录。时间推移分析证实了研究对象睡眠期间AN活动与SB事件之间的相关性。评估了SB强度、时长与AN活动之间的关系。
93.3%的病例中交感神经（SN）和副交感神经（PSN）活动显著（p<0.01），在睡眠磨牙期间具有相似的可预测模式。此外，7名研究对象的SB时长与SN活动（4名研究对象，p<0.05；3名研究对象，p<0.01），以及5名研究对象的PSN与SB肌肉活动（最大自主收缩百分比）（4名研究对象，p<0.05；1名研究对象，p<0.01）显著相关。
作者认为睡眠磨牙与SN以及PSN活动密切相关，可能对自主神经系统具有调控作用。
