Dao T T, Lund J P, Lavigne G J
Faculty of Dental Medicine, University of Montreal, Quebec, Canada.
J Orofac Pain. 1994 Fall;8(4):350-6.
Although it has been suggested that bruxism is a cause or a risk factor in myofascial pain of the masticatory muscles, the prevalence of pain in bruxers and its characteristics have not been assessed or compared to those of myofascial pain patients in general. In this study, self-reports of pain and quality of life were recorded on 100-mm visual analogue and five-point category scales from two research populations: (1) 19 nocturnal bruxers who participated in a polysomnographic study and (2) 61 patients with myofascial pain of the masticatory muscles with no evidence of bruxism who participated in a controlled clinical trial on the efficacy of oral splints. The data show that pain was more intense in those bruxers who reported pain than among the myofascial pain patients, even though pain was not the chief complaint of bruxers. Both conditions reduced the patient's quality of life, although pain patients (either bruxism or myofascial pain) appeared to be much more affected than bruxers who were pain-free. The fact that pain from bruxism was worst in the morning suggests that it is possibly a form of postexercise muscle soreness. Myofascial pain, which was worst late in the day, is likely to have a different etiology.
尽管有人认为磨牙症是咀嚼肌肌筋膜疼痛的一个病因或危险因素，但磨牙症患者的疼痛患病率及其特征尚未得到评估，也未与一般肌筋膜疼痛患者的情况进行比较。在本研究中，通过100毫米视觉模拟量表和五点分类量表记录了两个研究群体的疼痛自述和生活质量：（1）19名参与多导睡眠图研究的夜间磨牙者；（2）61名咀嚼肌肌筋膜疼痛且无磨牙症证据的患者，他们参与了一项关于口腔矫治器疗效的对照临床试验。数据显示，尽管疼痛并非磨牙者的主要诉求，但报告有疼痛的磨牙者的疼痛程度比肌筋膜疼痛患者更强烈。两种情况均降低了患者的生活质量，不过疼痛患者（无论是磨牙症还是肌筋膜疼痛）似乎比无疼痛的磨牙者受影响更大。磨牙症引起的疼痛在早晨最为严重，这表明它可能是运动后肌肉酸痛的一种形式。而在一天晚些时候最为严重的肌筋膜疼痛，其病因可能有所不同。
