Association between patterns of jaw motor activity during sleep and clinical signs and symptoms of sleep bruxism

• DOI: 10.1111/jsr.12481
• Publication Date: 2016-12-20T10:02:39Z
• Authors: Yuya Yoshida; Takeshi Suganuma; Masayuki Takaba; Yasuhiro Ono; Yuka Abe; Shuichiro Yoshizawa; Takuro Sakai; Ayako Yoshizawa; Hirotaka Nakamura; Fusae Kawana; Kazuyoshi Baba
• Keywords: Sleep Bruxism; Tonic (physiology); Tooth wear; Sleep

Summary The aim of this study was to investigate the association between patterns jaw motor activity during sleep and clinical signs symptoms bruxism. A total 35 university students staff members participated in after providing informed consent. All participants were divided into either a bruxism group ( n = 21) or control 14), based on following diagnostic criteria: (1) reports tooth‐grinding sounds for at least two nights week preceding 6 months by their partner; (2) presence tooth attrition with exposed dentin; (3) morning masticatory muscle fatigue tenderness; (4) masseter hypertrophy. Video‐polysomnography performed laboratory nights. Sleep episodes measured using electromyography, visually inspected then categorized phasic tonic episodes. Phasic further without grinding as evaluated audio signals. subjects reported had significantly higher number than controls (Kruskal–Wallis/Steel–Dwass tests; P < 0.05). Similarly, exhibited longer burst durations those Furthermore, tenderness These results suggest that each sign symptom represents different aspects sleep.