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.
The dentist will usually check the margins of the fillings, and if there are openings between the filling and the tooth, or corrosion, or it feels a little sticky when an explorer is poked at that margin, will recommend replacing the filling.f they are done right and that bond is strong, it can be difficult for decay to seep in around the edges. Also, with white fillings it is easier to tell if new decay is starting to form at the edge or underneath it because the filling is somewhat translucent and will become discolored with sub-surface decay. âDr.