Generally, heavy metals, except silver, have been proven to be too toxic for use on human tissue and are no longer used medically.

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Heavy metals such as lead, mercury, cadmium, and arsenic have been proven to be too toxic for use on human tissue and are no longer used medically. Silver is an exception as it has antimicrobial properties and is still used in certain medical applications.

Generally, Heavy Metals, Except Silver, Have Been Proven to Be