ArticleClinical oral investigations2026
Lower intradaily rest-activity variability is associated with severe periodontitis: A cross-sectional wrist-accelerometry study.
Article in Clinical oral investigations, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesBehavioral research on periodontitis has largely emphasized sleep duration and activity volume, whereas the 24-hour temporal organization of movement and rest remains understudied. We examined wrist-accelerometry-derived intradaily variability (IV) in relation to severe periodontitis. MATERIALS AND
methodsThis cross-sectional study included 4,631 adults aged 30 years or older from the National Health and Nutrition Examination Survey 2011-2014. Participants had wrist-accelerometry data and an evaluable full-mouth periodontal examination. Severe periodontitis was defined using the Centers for Disease Control and Prevention/American Academy of Periodontology surveillance definition. Survey-weighted logistic regression with marginal standardization estimated adjusted prevalence measures.
resultsSevere periodontitis was identified in 507 participants (survey-weighted prevalence, 7.69%). In the fully adjusted model, standardized prevalence was 7.41% when IV was set to the analytic-cohort mean and 5.83% when IV was set to the mean plus 1 standard deviation. The adjusted marginal prevalence ratio was 0.786 (95% confidence interval, 0.696-0.889), and the prevalence difference was - 1.58% points (95% confidence interval, - 2.32 to - 0.85). Quartile results were broadly inverse but not strictly monotonic, and the restricted cubic spline showed no statistical evidence of nonlinearity.
conclusionsHigher IV was cross-sectionally associated with a lower standardized prevalence of severe periodontitis, although the absolute difference was modest. CLINICAL RELEVANCE: The findings do not establish temporal direction or support clinical intervention; longitudinal studies are needed to determine whether IV adds information beyond established periodontal risk indicators.
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