Shift work sleep disorder is closely associated with an increased risk for periodontal disease

Aim: This study aimed to investigate the association between work patterns and periodontal disease. Materials and methods: Data were collected from the Korea National Health and Nutrition Examination Survey between 2007 and 2012, and data from 22,508 subjects aged ≥19 years were included. An individual's work pattern was classified as either daytime or shift work. Sleep duration was categorized into three ranges: ≤5, 6–8, and ≥9 h/day. A multivariate logistic regression model was used to determine the adjusted odds ratio (OR) for CPI (Community Periodontal Index) ≥3. The CONTRAST statement was used to show the interaction effect of work patterns and sleep duration. Results: The adjusted OR of shift work was 2.168 (CI: 1.929–2.438, p <.0001). Participants who sleep ≤5 or ≥9 h/day showed ORs 0.735 and 0.663, respectively (p =.0181). Interaction effect analysis revealed that the work pattern had a strong influence on periodontal condition when combined with the sleep amount. Shift workers with ≤5 or ≥ 9 h of sleep showed significantly increased ORs for CPI ≥3 (2.1406 and 2.3251, respectively, p <.0001). The ORs for daytime workers were comparable to the original values (≤5: 0.7348, p =.0292; ≥9: 0.6633, p =.0428). Conclusion: Altered sleep patterns caused by shift work have more influence on periodontal disease than sleep duration.