Nakata Akinori, Takahashi Masaya, Ikeda Tomoko, Hojou Minoru, Araki Shunichi
Division of Applied Research and Technology, National Institute of Occupational Safety and Health, 4676 Columbia Parkway, Cincinnati, OH 45226, USA.
Community Dent Oral Epidemiol. 2008 Jun;36(3):201-9. doi: 10.1111/j.1600-0528.2007.00388.x.
Psychosocial job stress has been associated with sleep disturbances, but its association with sleep bruxism (SB), the stereotype movement disorder related to sleep, is not well understood. The aim of this epidemiological study was to examine the relationship between psychosocial job stress and SB.
1944 male and 736 female factory workers participated in this study (response rate 78.1%). Perceived job stress was evaluated with the Japanese version of the generic job stress questionnaire, which covered 13 job stress variables. SB was assessed by the question, 'Do you grind or clench your teeth during your sleep or has anyone in your family told you that you grind your teeth during your sleep?' Response options were 'never', 'seldom', 'sometimes' or 'often'. SB was considered present if the answer was 'sometimes' or 'often'.
Overall, 30.9% of males and 20.2% of females reported SB. In males, workers with low social support from supervisors [odds ratio (OR) = 1.34, 95% confidence interval (CI) 1.08-1.68] or from colleagues (OR 1.47, 95% CI 1.17-1.83), and high depressive symptoms (OR 1.60, 95% CI 1.26-2.03) had a significantly increased risk of SB after controlling for confounders. By contrast, no significant association was found in females.
We conclude that SB is weakly associated with some aspects of job stress in men but not in women among the Japanese working population.
心理社会工作压力与睡眠障碍有关，但其与睡眠磨牙症（SB，一种与睡眠相关的刻板运动障碍）的关联尚未完全明确。本流行病学研究旨在探讨心理社会工作压力与SB之间的关系。
1944名男性和736名女性工厂工人参与了本研究（应答率78.1%）。采用日本版通用工作压力问卷评估感知到的工作压力，该问卷涵盖13个工作压力变量。通过询问“您在睡眠中是否磨牙或紧咬牙，或者您的家人是否告诉过您您在睡眠中磨牙？”来评估SB。回答选项为“从不”“很少”“有时”或“经常”。如果回答是“有时”或“经常”，则认为存在SB。
总体而言，30.9%的男性和20.2%的女性报告有SB。在男性中，在控制混杂因素后，来自上级（优势比[OR]=1.34，95%置信区间[CI]1.08 - 1.68）或同事（OR 1.47，95% CI 1.17 - 1.83）社会支持低以及抑郁症状高（OR 1.60，95% CI 1.26 - 2.03）的工人患SB的风险显著增加。相比之下，在女性中未发现显著关联。
我们得出结论，在日本工作人群中，SB与男性工作压力的某些方面存在弱关联，但与女性无关。
