On Oct.03.11 , In Blog , by Jeanne Taylor
Dental amalgam has been used for over 150 years. It has been thoroughly researched, tested and improved. It is commonly placed in the posterior teeth (“back teeth”). Amalgam is a mix of 43-54% mercury, silver, copper and tin, and it has a silver color when placed. In comparison to tooth-colored fillings, amalgam is stronger and more durable against biting force, shrinks less and therefore leaks less and lasts longer than tooth-colored filling material, tends to cause less sensitivity following placement. Disadvantages include: darkening over time, and concerns of mercury vapor release (though the FDA, CDC and WHO have not found evidence of harm).