The primary finding of the multivariate logistic regression analysis was that persons with three or more active root caries lesions had more than twice the odds of cardiac arrhythmias than persons without active root caries. The results did not notably change after adjusting for age, medications that reduce saliva, and number of teeth. Persons with one to two active coronal caries lesions had 2.8 times higher odds (95% confidence interval=1.1-7