Is It Safe to Use Mercury in Dental Amalgam?
Since mercury is a metal that occurs naturally in the environment, everyone is exposed to mercury in some form, whether through the air, drinking water, soil, or food. So, having some contact with very low levels of mercury through amalgam isn’t all that much different from other daily exposures.
As with most substances, harm caused by mercury in the body is related to the amount ingested. Low levels of mercury don't cause any adverse effects. But at higher levels, mercury is known to cause several unfavorable symptoms. With amalgam, minimal amounts of mercury in the form of vapor can be released and absorbed into the body as the filling wears.
It makes sense to question whether amalgam is safe to put inside your mouth. However, research has concluded that amalgam fillings are nothing to worry about because the low level of mercury absorbed from them is not enough to create any toxic effects. Studies have shown that the amount of mercury you can be exposed to from amalgam fillings is less than the amount that most people are exposed to in their daily environment or in the food they eat.