Great Lakes Regional Pollution Prevention Roundtable
Promoting Pollution Prevention Through Information Exchange

Help Desk Archive

Question submitted on 11/30/11

Could you please give information on the percentage of mercury in dental amalgam in modern practice? Previously, it was~ 50%.


According to the U.S Food and Drug Administration, dental amalgam is approximately 50% elemental mercury by weight (

There are mercury-free alternatives to dental amalgam. See for more information.

For more information, see:

U.S. EPA > Dental Amalgam

Centers for Disease Control > Dental Amalgam Use and Benefits

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