Endodontics · single question
What is the most likely pulpal diagnosis of the associated tooth?
Show answer and explanation
Correct answer: D. Pulpal necrosis
A chronic draining sinus tract (parulis) indicates long-standing pulpal necrosis with chronic apical abscess formation. The pulp is no longer vital, therefore it cannot be reversibly or irreversibly "inflamed" — it is necrotic. Treatment is non-surgical root canal therapy.