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 ?
2]) percentage thermal conductivity will decrease, and this will reduce thermal shock on tooth pulp which make dental amalgam more comfortable.
The direct observation and conversations provided information on the preparation and disposal of dental amalgam and storage practices and spillage of Hg.
SCENIHR is expected to publish its preliminary report on the safety of dental amalgam and alternatives for patients and users in the coming weeks.
Its two scientific committees - the Scientific Committee on Health and Environmental Risks (SCHER) and the Scientific Committee on Emerging and Newly Identified Health Risks (SCENIHR) - both backed this approach in 2008, finding that the use of dental amalgam containing mercury did not pose serious or long-term threats to health, apart from allergies.
However dental amalgam has served excellent for centuries and is a versatile restorative material, despite facing controversy over mercury toxicity (22,29,39).
Age, sex, ethnicity, Canadian citizenship status, household education level, household income, fish and shellfish consumption, number of dental amalgams, smoking status and alcohol consumption were examined in association with blood THg concentrations.
13) Dental amalgam consists, essentially, of mercury combined with a powdered silver-tin alloy.
Surprisingly, they did not mention the well-documented relationship between mercury released from mercury-containing dental amalgam fillings and mercury disposition in placental tissues (Clarkson and Magos 2006; Gundacker and Hengstschlager 2012; Richardson et al.
Q: I've read on your website about dental amalgam fillings, fluoride and, more recently in the magazine, about dental floss.
Mercury, designated on the Periodic Chart as Hg, is a compound found in some medications, dental amalgam, and in business industrial processes.
She argues that general guidelines of drinking water, exercising, and eating organic foods is not enough, due to the toxicities that exist today, and outlines four levels of disease to help physicians determine severity; how to use drainage to excrete toxins from the body; and the removal of toxic metals and chemicals from dental amalgam fillings, personal care, and other products, their effects, and treatments, with suggestions of safe products.
Dental amalgam mercury: background (A summary of research results on dental amalgam mercury to date).