Dental Amalgam.docx - Dental Amalgam Derricka Fleming DA 120 Dental amalgam is a mixture of metals consisting of liquid mercury and a powdered alloy

Dental Amalgam.docx - Dental Amalgam Derricka Fleming DA...

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Dental Amalgam Derricka Fleming November 21, 2019 DA 120 Dental amalgam is a mixture of metals, consisting of liquid mercury and a powdered alloy composed of silver, tin, and copper. About 50% of dental amalgam is elemental mercury by weight. The chemical properties of elemental mercury allow it to react with and bind together the silver/copper/tin alloy particles to form an amalgam. 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. Dental amalgam fillings are also known as “silver fillings” because of their silver appearance. When placing dental amalgam, the dentist first drills the tooth to remove the decay and then shapes the tooth cavity for placement of the amalgam. Next, the dentist mixes the powdered alloy with the liquid mercury to form an amalgam putty. This
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