Mercury is a naturally occurring element found in air, water and soil. Mercury exists in a number of different forms: elemental mercury. metallic mercury inorganic mercury compounds. organic mercury compounds.
Conclusion. Mercury fillings are still used today by many dentists all around the world. Amalgam is a cost effective and strong material to use to fill teeth. They also tend to last much longer than their composite resin counterparts.Even though a metal filling may be stronger, many people still choose to have composite fillings placed due their aesthetic appearance.n order for amalgam to have the correct consistency, it is made up of a number of different metals. Amalgam fillings typically contain 40-50% mercury with the remaining 50-60% being made up of a metal powder. The metal in this powder is a combination of: 1  Tin. 2  Silver.
Types: Traditional (non-bonded). Used for: Fillings in back teeth. Lasts: At least 10 years, usually longer. Costs: The least expensive type of restorative material. Advantages. 1  Amalgam fillings are strong. 2  They can withstand the forces of chewing. 3  They are less costly than the alternatives. 4  Amalgam fillings can be completed in one dental visit. 5  They are less sensitive to moisture during the filling process than composite resin.