Miscellaneous

11/27/2005
Dental amalgam, the material in "silver" tooth fillings, contains approximately 50 per cent mercury. Used as a dental restorative material for over 150 years, amalgam remains popular because it is strong, durable and relatively inexpensive. Roughly 200 million restorative procedures performed in 1990 used amalgam. Amalgam use is declining because the incidence of caries is decreasing and because improved substitute materials are now available for certain applications. Dental amalgam is a known source of mercury to the environment.

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