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 ?
2]) content enhance the compression strength, creep resistance, Vickers microhardness and stabilizes the dimensional change of dental amalgam.
Although only seven dentists have reported the use of dental amalgam in their professional routine, Hg was present in all fifteen air samples from the dental care unit, even where the material was not manipulated.
1) According to an EU source, the proposals on medical devices and in vitro medical devices, currently being negotiated, are not expected to have much impact on dental amalgam
Marginal fracture not a predictor of longevity for two dental amalgam alloys: a ten-year study.
Number of dental amalgams was based on the number of tooth surfaces with amalgam fillings that were identified by trained professionals on site.
15) The first major change in alloy for dental amalgam since the late 19th century occurred in 1963, when Innes and Youdelis (9) introduced the high copper amalgam alloys.
Mercury exposure and risks from dental amalgam in the US population, post-2000.
Childhood urine mercury excretion: dental amalgam and fish consumption as exposure factors.
The FDA said it will hold an advisory panel meeting in December to review issues related to possible risk from dental amalgam for pregnant women, fetuses, and young children.
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.