The bidirectional relationship between diabetes mellitus and periodontal disease

Diabetes mellitus (DM) is a chronic metabolic disorder characterized by persistent hyperglycemia due to defects in insulin secretion, insulin action, or both. As a major global health concern, diabetes is associated with multiple systemic complications. In recent years, the bidirectional relationship between DM and periodontal diseases has gained increasing attention. This review aims to highlight the classification, pathophysiology, and complications of diabetes, while emphasizing the reciprocal interactions between DM and periodontal diseases. Moreover, the prevalence, pathogenesis, and clinical manifestations of periodontal diseases in diabetic individuals are discussed, along with dental treatment approaches tailored for these patients. The bilateral association between DM and periodontal disease highlights the necessity for clinicians to incorporate periodontal evaluations into the standard care of diabetic patients. Timely diagnosis, stringent glycemic management, and consistent periodontal treatment are critical measures to mitigate disease progression and enhance clinical results. Enhancing collaboration between medical and dental experts can improve patient education, facilitate preventative care, and ultimately preserve both systemic and periodontal health.