Introduction Mercury is one of the most toxic nonradioactive elements,1 and may cause toxicity even at low doses.2,3 Dental amalgam,which is one of the most commonly used materials in restorative dentistry, has been used for more than 150 years.4 It consists of around 50% elemental mercury and a mixture of silver, tin, copper and zinc. The level of mercury vapor, which is emitted from dental amal
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