
For over 150 years, the gold standard in filling cavities was silver. Well, not just silver, but amalgam metal, which is a combination of liquid mercury as well as a powdered alloy comprised of silver, tin, and copper. These darkly colored restorations worked well to both protect the inside of the tooth from further decay and prevent food and bacteria from infiltrating it. But by the late 1990s and early 2000s, health concerns about mercury became more widespread, and soon composite resin tooth-colored fillings (made of safer materials including resin, quartz or glass, and pigments to mimic the shade of your natural teeth) became commonplace.
Today, amalgam metal fillings are rarely used, although many older restorations are still in excellent condition in mouths around the world. In addition to eliminating their unsightly appearance in your smile, here’s why replacing your old metal fillings could be better for your health.
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