amalgam

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amalgam

(əmăl`gəm), alloyalloy
[O. Fr.,=combine], substance with metallic properties that consists of a metal fused with one or more metals or nonmetals. Alloys may be a homogeneous solid solution, a heterogeneous mixture of tiny crystals, a true chemical compound, or a mixture of these.
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 containing mercurymercury
or quicksilver
[from the Roman god Mercury], metallic chemical element; symbol Hg [Lat. hydrargyrum=liquid silver]; at. no. 80; at. wt. 200.59; m.p. −38.842°C;; b.p. 356.58°C;; sp. gr. 13.55 at 20°C;; valence +1 or +2.
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. The alloy may be liquid or solid, depending on the proportion of mercury, although all naturally occurring amalgams, i.e., those of gold and silver, are solid. Amalgams are widely used. Silver, gold, and copper amalgams are used in dentistry, and tin amalgam is used in making mirrors.

amalgam

[ə′mal·gəm]
(metallurgy)
An alloy of mercury.
(mineralogy)
A silver mercury alloy occurring in nature.

amalgam

1. an alloy of mercury with another metal, esp with silver
2. a rare white metallic mineral that consists of silver and mercury and occurs in deposits of silver and cinnabar
References in periodicals archive ?
Dental amalgams in children with gum-chewing or teeth-grinding habits predicted higher levels.
Number of dental amalgams was based on the number of tooth surfaces with amalgam fillings that were identified by trained professionals on site.
In North America, the traditional view is that the advantages of mercury-containing amalgam outweigh any possible health risks, and for this reason, mercury-containing dental amalgams are still widely used.
According to the Environmental Protection Agency (EPA), dental amalgam is the primary source of exposure, emitting mercury 24 hours a day, 7 days a week.
Dental amalgam (AM) has been the cornerstone of restorative dentistry for over 150 years.
Dental amalgam emits small amounts of mercury vapor, and some experts question its effects on brain and nerve tissue.
National Institute of Dental and Craniofacial Research (NIDCR) News Release "Studies Evaluate Health Effects of Dental Amalgam Fillings in Children", Tuesday, April 18, 2006
Euro-MPs claim that dental amalgam made with mercury could be slowly poisoning people.
Meanwhile, the European Parliament has welcomed European Commission plans to crack down on mercury exposure, but has called for it to use more compulsory regulations on emissions, storage and banning exports, for instance focusing on its use in vaccine development, dental amalgam and the chlor-alkali industry.
Dental amalgam is an alloy of mercury that incorporates silver, tin, copper, and zinc.
The NM bill also calls for the generation of a report of the dangers of the use of mercury containing dental amalgam to the secretary of health.
Mr Birch, who explained that the mercury was contained in dental amalgam used in teeth fillings, said a bid was being made for funding to install equipment during the 2009-10 financial year at the latest.