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?

broader public health policy.

Europe has largely eliminated routine dental amalgam use, motivated significantly by environmental concerns and the availability of alternative materials.

The United States still permits amalgam, although federal recommendations and industry practices are shifting toward mercury-free dentistry.

Both positions exist alongside an important scientific finding: available studies have not conclusively shown that intact amalgam fillings cause harmful health effects in the general population.

Yet it is reasonable to ask whether a mercury-containing dental material should remain a routine option when appropriate alternatives are available.

For people with existing fillings, the most responsible approach is not automatic removal.