For generations, dentists placed silver-colored fillings in millions of teeth. But behind their familiar appearance lies a controversial ingredient: mercury. Now that Europe has largely phased them out, Americans are asking an uncomfortable question—why are they still permitted in the United States?

also contain chemicals such as methacrylate monomers, which have their own safety considerations.

Glass ionomer restorations and ceramic materials offer additional options.

The most appropriate choice depends on the individual tooth, the extent of decay, clinical circumstances, and patient preferences.

A good dentist should explain the benefits and limitations of available materials before treatment.
The Environmental Argument May Be Stronger Than Many People Realize

One of the most compelling reasons to reduce dental amalgam use has little to do with what happens inside an individual patient’s mouth.

It concerns what happens to mercury outside it.

Improperly managed mercury waste can