Odontogenic sinusitis of endodontic origin: A comprehensive review of etiopathogenesis, diagnostic strategies, microbiology, and endodontic management

Objectives: To review the dental etiologies, diagnostic approaches, microbiological profile, and endodontic management strategies of odontogenic sinusitis. Methods: Relevant literature focusing on endodontic causes of maxillary sinusitis was reviewed, including CBCT-based diagnostics, microbiological studies, and treatment outcomes following root canal therapy and surgical interventions. Results: Apical periodontitis and endodontic procedural errors were identified as primary contributors to odontogenic sinusitis. CBCT provided superior diagnostic accuracy. The microbiological profile was predominantly polymicrobial with anaerobic dominance. Endodontic treatment effectively resolved sinus symptoms in most cases without the need for surgical sinus intervention. Conclusions: Early dental evaluation and appropriate endodontic management are essential for successful resolution of odontogenic sinusitis. Multidisciplinary collaboration improves diagnostic accuracy and treatment outcomes.