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Dental amalgam is a liquid mercury and metal alloy mixture used in dentistry to fill cavities caused by tooth decay. Low-copper amalgam commonly consists of mercury , silver , tin , zinc and other trace metals.
Dental amalgams were first documented in a Tang Dynasty medical text written by Su Gong in 659, and appeared in Germany in 1528. In the 1800s, amalgam became the dental restorative material of choice due to its low cost, ease of application, strength, and durability.
In July 2018 the EU prohibited amalgam for dental treatment of children under 15 years and of pregnant or breastfeeding women.
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