[Regarding the relationship between bruxism and the results of the simple occupational stress questionnaire]

To determine the psychosocial factors that relate to employee bruxism.

Stress checks were conducted in 2020 on 13,429 employees of a business establishment, of whom 10,480 (78%) answered all survey questions, and the study population was composed of 8,651 males and 1,829 females (mean 42.4 years). First, participants were divided into two groups: "bruxism" (3,034) and "non-bruxism" (7,446). T-tests or chi-square tests were performed for age, sex, and questions on the occupational stress assessment form and the Athens Insomnia Scale. In addition, a logistic regression analysis was performed with the presence or absence of bruxism as the dependent variable (yes, 1; no, 0).

The mean age of the bruxism group was 41.6 ± 9.76 years, and that in the non-bruxism group was 42.8 ± 9.83 years. There were 2,224 males and 810 females in the bruxism group and 6,427 males and 1,019 females in the non-bruxism group, with a statistically significant higher proportion of females in the bruxism group. The multivariate analysis showed that the scores for "irritability," "low vitality," "physical complaints," and "anxiety" were significantly higher and that the score for "sleep quality" was significantly lower in the bruxism group than in the non-bruxism group.

The results showed that employees with bruxism have more psychosocial problems, such as "irritability," "low vitality," "physical complaints," "anxiety," and "sleep problems," than those without bruxism.