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.
Dentists often prefer dental amalgam because it is easier to work with than other alternatives. Many dentists consider amalgam stronger than the resin-based composite, and therefore use amalgam for back teeth fillings. Many patients prefer dental amalgam for the same reasons, plus its cost-effectiveness and ability to fill cavities quickly.