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Chart showing overall percentages of metal allergies. Of all the patients tested (N = 100), most had positive reactions to nickel (23%). The next most common metal allergies were amalgam (15%) and then palladium (14%). Ten percent of patients reacted to copper, 9% to cobalt, 9% to mercury, 4% to tin, 2% to vanadium, gold, and 1% to molybdenum and titanium.
