Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, Brazil.
Clinical Practice at Pelotas Sleep Institute, Otorhinolaryngology and Member of the Brazilian Sleep Association, Pelotas, Brazil.
Arch Oral Biol. 2020 Apr;112:104685. doi: 10.1016/j.archoralbio.2020.104685. Epub 2020 Feb 19.
This study evaluated the association between the diagnosis of sleep bruxism (SB), scored by way of polysomnographic (PSG) recordings, clinical conditions and sleep architecture.
A case-control study was conducted. All records from adults who had undergone polysomnography (PSG) recordings at a private medical outpatient clinic between January 2015 and December 2017 were reviewed. The sample included 58 bruxers (case group) and 58 non-bruxers (control group), identified based on the PSG recording and matched by sex and age.
Obese individuals had significantly lower chance (OR 0.18; 95 % CI: 0.05-0.62; P = 0.005) of an SB diagnosis than individuals with normal BMI. Alcohol consumption significantly increased (OR 2.74; 95 % CI: 1.11-6.78; P = 0.029) and OSA decreased the chances (OR 0.55; 95 % CI: 0.23-1.30; P = 0.173) of an SB diagnosis. Bruxers had a significantly shorter wake time after sleep onset (WASO) (p = 0.002). As far as non-rapid eye movement (NREM) is concerned, the duration of stage N1 was statistically shorter (p = 0.034) and the duration of stage N3 was statistically longer (p = 0.001) in bruxers. Arousals (p = 0.013), arousals per hour (p = 0.009), respiratory disturbance index (RDI) values (p < 0.0005) and the apnoea-hypopnea index (AHI) (p = 0.002) were all lower in bruxers than in non-bruxers.
The results of this study support a significant association between SB diagnosis, BMI and alcohol consumption. SB modified the sleep architecture as statistically significant differences were found between bruxers and non-bruxers for WASO, NREM stage N1 and N3, arousals, arousals per hour, RDI and AHI.
本研究通过多导睡眠图（PSG）记录评估睡眠磨牙症（SB）的诊断与临床状况和睡眠结构的关系。
进行病例对照研究。对 2015 年 1 月至 2017 年 12 月期间在一家私人医疗门诊接受多导睡眠图（PSG）记录的所有成年人的记录进行了回顾。该样本包括 58 名磨牙症患者（病例组）和 58 名非磨牙症患者（对照组），根据 PSG 记录和性别及年龄匹配。
肥胖个体的 SB 诊断可能性明显降低（OR 0.18；95%CI：0.05-0.62；P = 0.005），而 BMI 正常者的 SB 诊断可能性较高。饮酒可显著增加（OR 2.74；95%CI：1.11-6.78；P = 0.029），阻塞性睡眠呼吸暂停（OSA）降低 SB 诊断的可能性（OR 0.55；95%CI：0.23-1.30；P = 0.173）。磨牙症患者的睡眠潜伏期后觉醒时间（WASO）明显缩短（p = 0.002）。在非快速眼动（NREM）期间，N1 期的持续时间明显缩短（p = 0.034），N3 期的持续时间明显延长（p = 0.001）。磨牙症患者的觉醒（p = 0.013）、每小时觉醒次数（p = 0.009）、呼吸紊乱指数（RDI）值（p < 0.0005）和呼吸暂停低通气指数（AHI）（p = 0.002）均低于非磨牙症患者。
本研究结果支持 SB 诊断与 BMI 和饮酒之间存在显著关联。SB 改变了睡眠结构，磨牙症患者与非磨牙症患者的 WASO、NREM 期 N1 和 N3、觉醒、每小时觉醒次数、RDI 和 AHI 存在统计学差异。
