A 52-year-old presents with a tense facial swelling in the right maxillary molar region and a non-vital pulp test on that tooth. What is the most likely diagnosis and the immediate management?

• A. Acute apical abscess with spreading infection; immediate management includes drainage, analgesia, antibiotics if systemic signs, and definitive endodontic therapy or extraction after stabilization.
• B. Chronic periapical granuloma requiring observation.
• C. Sinus tract infection unrelated to tooth; treat with antibiotics only.
• D. Acute dentoalveolar trauma with egress of blood clot; immobilization.

Answer: (A)

Recognizing an acute apical abscess presenting with spreading infection is the key idea. A non-vital maxillary molar means the pulp has died and the tooth is a source of infection. When the swelling is tense and facial, this suggests pus accumulating in the tissue spaces (cellulitis or an abscess) and a risk of rapid spread if not controlled.

The priority is to relieve pressure and control the infection. Drainage is essential because it allows the purulent material to escape, reducing pain and preventing further spread. Analgesia is important for patient comfort. Antibiotics are reserved for situations where there are systemic signs (fever, malaise, lymphadenopathy) or if the infection is spreading beyond the local tissues. Once the acute infection is controlled and the patient is stabilized, definitive treatment should address the source: either endodontic therapy of the offending tooth or extraction, depending on prognosis and feasibility.

Chronic periapical granuloma wouldn’t typically cause a tense facial swelling and is usually managed with definitive therapy or observation rather than urgent drainage. A sinus tract infection unrelated to the tooth would not present with a non-vital tooth as the primary issue requiring immediate drainage. Acute trauma with blood clot egress involves different history and signs, not the infectious spread seen here.