| 释义 |
dental amalgam
Thesaurus| Noun | 1. |  dental amalgam - an alloy of mercury with another metal (usually silver) used by dentists to fill cavities in teeth; except for iron and platinum all metals dissolve in mercury and chemists refer to the resulting mercury mixtures as amalgamsamalgamalloy, metal - a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten; "brass is an alloy of zinc and copper" |
EncyclopediaSeeamalgamdental amalgam
A filling material that contains up to 50% mercury, silver and other metals, which has been used in dental restoration since the early 1800sdental amalgam Dentistry A filling material that contains up to 50% mercury, silver and other metals. See Alternative dentistry, Fluoridation, Gutta percha, Mercury. dental amalgamA 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: amalgamdental amalgam
Synonyms for dental amalgamnoun an alloy of mercury with another metal (usually silver) used by dentists to fill cavities in teethSynonymsRelated Words |