Does restriction of mandibular movements during sleep influence jaw-muscle activity?
Does restriction of mandibular movements during sleep influence jaw-muscle activity?
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DOI：
10.1111/j.1365-2842.2012.02310.x
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发表时间：
2012-07-01
影响因子：
2.9
通讯作者：
Svensson, P.
中科院分区：
文献类型：
--
作者：
Arima, T.;Tomonaga, A.;Svensson, P.
目的：探讨睡眠时限制下颌运动对颌肌肌电活动的影响。11名自述有睡眠磨牙症的健康受试者(4男7女，年龄25.9+/-3.1岁)参加了三种不同类型口腔矫治器的随机治疗：(I)不允许任何下颌运动的全弓上下颌矫治器(Restraint-MMOA)，(Ii)不限制下颌运动的全弓上下颌矫治器(Free-MMOA)和(Iii)传统的全弓平坦稳定矫治器(Free-MOA)，即上颌矫治器(Free-MOA)。记录睡眠中不使用任何口腔矫治器时的颌肌活动的基线记录(第一次肌电记录)，然后每晚使用每种口腔矫治器1周(3次)。在每一次治疗的最后一晚，记录颌骨肌肉活动(第二、第三和第四次肌电记录)，并与基线值进行比较。所有肌电数据均按金标准诊断方法进行分析。与基准值相比，在任何一种矫治器组合中，平均下颌肌肉活动(以每小时睡眠的肌电发作和突发次数表示)显着减少。该矫治器的抑制作用与时相肌电发作和阵发次数有关(P<；0.01)，对强直肌电阵发和阵发没有影响(P>；0.30)。结果表明，使用口腔矫治器限制下颌运动对睡眠期间的颌肌活动没有任何重大影响，但任何口腔矫治器组合的即刻效应都能抑制相性肌电的爆发和发作。
To investigate the effect of restriction of mandibular movements during sleep on jaw-muscle electromyographic (EMG) activity. Eleven healthy subjects (four men and seven women; age, 25.9 +/- 3.1 years) with self-reports of sleep bruxism participated in three randomised sessions with three different types of oral appliances: (i) full-arch maxillary and mandibular appliances which did not allow any mandibular movement, that is, restrictive oral appliance (restrict-MMOA), (ii) full-arch maxillary and mandibular oral appliances (free-MMOA) with no restrictions of mandibular movements and (iii) conventional full-arch flat stabilisation appliance, that is, maxillary oral appliance (free-MOA). Baseline recordings (1st EMG recording) of jaw-muscle activity during sleep without any oral appliance were performed and followed by 1 week of nightly use of each oral appliance (three sessions). During the last night in each session, jaw-muscle activity was recorded (2nd, 3rd and 4th EMG recordings) and compared to baseline values. All EMG data were analysed in accordance with the gold-standard diagnostic method. The average jaw-muscle activity expressed as number of EMG episodes and bursts per hour sleep was significantly reduced during any combination of appliance compared to baseline values. The inhibitory effect of the appliances was specific to the number of phasic EMG episodes and bursts (P < 0.01), with no effects on tonic EMG bursts or episodes (P > 0.30). The results indicated that restriction of mandibular movements with oral appliances do not have any major influence on jaw-muscle activity during sleep but rather that the immediate effect of any combination of oral appliances lead to a suppression of phasic EMG bursts and episodes.