Association between sleeping time and temporomandibular disorders in a sample of the South Korean population

ABSTRACT

Objective: This study investigated the relationship between sleeping time and temporomandibular disorders (TMDs).

Methods: This study used data from the Fifth Korea National Health and Nutrition Examination Survey from 2010 to 2011. The final sample size consisted of 11,782 adults aged ≥19 years. Logistic regression analysis was performed to assess the relationship between sleeping time and TMD.

Results: The adjusted odds ratios of the TMD group were 1.421 (1.067, 1.892) (Model 1), 1.388 (1.028, 1.873) (Model 2), and 1.360 (1.012, 1.826) (Model 3) for subjects with sleeping time ≤5 hours (p < 0.05) and 1.317 (0.992, 1.748) (Model 1), 1.358 (1.01, 1.827) (Model 2), and 1.352 (0.977, 1.872) (Model 3) for subjects with sleeping time ≥9 hours (p < 0.05).

Conclusion: Sleeping time ≤5 hours and ≥9 hours were associated with an increased rate of TMD.

KEYWORDS:

• Long sleeping time
• short sleeping time
• temporomandibular disorders
• stress
• logistic regression analysis
• cross-sectional study
• national survey
• epidemiology

Disclosure of interest

The authors report no conflicts of interest.

Additional information

Funding

This research did not receive any specific funding.