dental amalgam


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dental amalgam

an alloy of silver, tin, and mercury with small amounts of zinc and sometimes copper, used for restoring tooth surfaces affected by dental caries or trauma. See amalgam.
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Dental amalgam
A filling material that contains up to 50% mercury, silver and other metals, which has been used in dental restoration since the early 1800s

dental amalgam

Dentistry A filling material that contains up to 50% mercury, silver and other metals. See Alternative dentistry, Fluoridation, Gutta percha, Mercury.

dental amalgam

A dental restorative material made by mixing approx. equal parts of elemental liquid mercury (43% to 54%) and an alloy powder (57% to 46%) composed of silver, tin, copper, and sometimes smaller amounts of zinc, palladium, or indium. Dental amalgam has been used for over 150 years. A fraction of the mercury in amalgam is absorbed by the body, and people with amalgam restorations in their teeth have higher concentrations of mercury in tissues (including the blood, urine, kidneys, and brain) than those without amalgam fillings. In 1993 the Public Health Service of the U.S. Department of Health and Human Services published a report acknowledging that scientific data are insufficient to conclude that amalgam fillings have compromised health. There is no evidence that removal of amalgam fillings has a beneficial effect on health. A dental amalgam is colloquially called a silver amalgam or a silver filling.
See also: amalgam
References in periodicals archive ?
Dental amalgam fillings and the amount of organic mercury in human saliva.
or as a serious commitment to phase down dental amalgam, its own leading intentional mercury use?
This is an important consideration for studies seeking to determine the health risks of mercury vapor inhalation from dental amalgams.
Mercury exposure and risks from dental amalgam in the US population, post-2000.
W, The release, absorption and possible health effects of mercury from dental amalgam, Biomaterial abstract, 121-120, 1993.
as the FDA decided yesterday to review dental amalgam and in particular risks to vulnerable populations.
Prior to this report, little was known about how the chemical forms of mercury in dental amalgam might change over time.
The dental amalgam on the surface of an old tooth filling may have lost as much as 95 per cent of its mercury but what's left is in a form that is unlikely to be toxic in the body," said Graham George, who led the study.
FITCHBURG - A local dentist operates one of 14 practices across the state that has been targeted by the Department of Environmental Protection for failing to comply with regulations designed to keep mercury-containing dental amalgam from being released into the water supply.