Endodontics · single question
Which test is LEAST definitive for confirming a diagnosis of pulp necrosis?
Show answer and explanation
Correct answer: C. Palpation test
- A. ❌ Methylene blue dye CAN confirm necrosis by staining necrotic tissue — this IS among the more definitive methods.
- B. ❌ The cavity test (drilling without anesthesia — patient feels nothing if truly necrotic) is one of the MOST DEFINITIVE confirmatory tests.
- C. ✅ Correct (LEAST definitive). Palpation tests periapical tissues and may indicate periapical pathology, but does NOT directly confirm pulp necrosis — it only suggests a periapical reaction. Palpation is the least definitive for CONFIRMING necrosis itself.
- D. ❌ EPT (electric pulp test) provides information about pulp vitality — a negative response supports necrosis.