Restorative & Materials · single question
Mercury in dental amalgam is in which form?
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Correct answer: C. Elemental mercury (liquid metallic mercury)
Dental amalgam contains ~50% elemental mercury (Hgu2070) combined with an alloy of silver, tin, copper, and zinc. Elemental mercury is the least toxic form. Organic mercury (from contaminated fish) is the most toxic. Research consistently shows amalgam mercury vapor levels are below health risk thresholds.
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