Amalgam filling is the most common material used to fill cavities. Over the years, concern has risen because it contains mercury. Amalgam is produced with an integration of several metals. These metals include copper, tin, silver, and mercury. It is a very durable material, especially for teeth that undergo an immense amount of pressure from chewing or teeth grinding.
Amalgam fillings can be removed, but it is recommended to only remove them when they are worn out or damaged. Removing good amalgam fillings can result in unnecessary loss of the healthy tooth structure and exposes you to additional mercury vapor during the removal process.