Galvanic Pain — NDEB AFK MCQ
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Correct answer: B — Contact between two dissimilar metal restorations
Galvanic pain (oral galvanism) occurs when two dissimilar metals (e.g., amalgam restoration contacting a gold crown) in the presence of saliva (electrolyte) create an electrochemical cell (battery effect). The resulting electrical current stimulates the pulp, causing a sharp, sudden, metallic-taste-associated pain. It typically occurs on initial contact between newly placed dissimilar metallic restorations. The pain usually diminishes over time as corrosion products form an insulating layer.
Reference: Anusavice – Phillips' Science of Dental Materials, 13th ed., 2022