Endodontics · single question
What is the most definitive test to confirm pulp necrosis?
Show answer and explanation
Correct answer: D. Cavity test
- A. The electric pulp test measures vitality of remaining nerve fibers — may give false positives in multi-rooted teeth with partially vital pulps.
- B. Percussion tests for periapical status, not pulp vitality status.
- C. Cold test (thermal test) can give false responses in partial necrosis or recently necrotic teeth — not the most definitive.
- D. Correct. The cavity test (test cavity/test drill without anesthesia) is the most definitive test for pulp necrosis. If the patient feels no sensation when the bur contacts dentin, it confirms neural unresponsiveness/necrosis. All other tests can give false readings.