Properties of Amalgam: poor tooth colour match, limited dimensional changes, good compressive strength, stays plastic long enough to allow placing & carving, another name for this is "silver filling", composed of appx. 50% mercury, high thermal conductivity, consists of several different metals, Uses of Amalgam: restore permanent and deciduous posterior teeth, build up tooth prior to a crown, seals apex of tooth after the root tip is removed, Common Causes of Amalgam Failure: marginal breakdown, secondary decay, moisture contamination, bulk fracture, incorrect mercury to alloy ratio, improper mixing , Correctly triturated amalgam : cohesive, dull shine, smooth, homogeneously plastic,

Section 2.6: Amalgam

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