The same tooth (#8, enamel-dentin fracture) is sensitive to cold that resolves quickly when the stimulus is removed. The pulpal diagnosis is most consistent with:

Correct answer: A. Reversible pulpitis

• A. Correct. Sharp pain that resolves promptly after the stimulus is removed indicates reversible pulpitis.
• B. Irreversible pulpitis causes lingering pain (often spontaneous) lasting after stimulus removal.
• C. Necrosis would show no response to cold.
• D. A normal pulp would not be symptomatic to cold in this scenario.