A patient with active tuberculosis requires emergency dental treatment. What is the appropriate setting for this emergency care?

Correct answer: B. Isolated room with airborne precautions (N95, negative pressure room)

• A. INCORRECT. A regular surgical mask does not protect against airborne transmission of Mycobacterium tuberculosis, which is spread via droplet nuclei that can remain suspended in the air for extended periods.
• B. CORRECT. Emergency dental treatment for an active TB patient must be performed in an isolated room with full airborne infection precautions: N95 (or higher) respirator for the dental team, negative-pressure isolation room or equivalent ventilation, and minimizing the number of personnel. Emergency care may not be postponed indefinitely if the patient has acute dental pain or infection.
• C. INCORRECT. True dental emergencies (e.g., acute dentoalveolar abscess causing airway compromise or severe systemic infection) cannot be postponed. Emergency treatment must be provided with appropriate isolation precautions.
• D. INCORRECT. HEPA filtration alone in a regular operatory without negative pressure or proper isolation is insufficient to prevent the spread of aerosolized TB bacilli during dental procedures.