The association between dental caries, periodontal diseases, and tooth loss with diabetes mellitus among the elderly population

Our study investigated the association between dental caries, periodontal diseases, and tooth loss with diabetes mellitus (DM) among the elderly population, representing the first study of its kind in Iran. This was a cross-sectional community-based study as a part of the second wave of the Birjand longitudinal aging study (BLAS, 2021–2022) for people older than 60. We used the Comprehensive Geriatric Oral Health Assessment Tool (CGOHAT) for the oral health evaluation. Participants were initially categorized into diabetic and non-diabetic groups. Those patients with DM were further categorised into uncontrolled and controlled diabetes based on their HbA1c level. The association between periodontitis, gingivitis, and edentulism with type II diabetes mellitus and uncontrolled diabetes was assessed using logistic regression. Among the 1,011 participants, 324 (32.04