Many of us have the traditional silver amalgam fillings that have been used for decades. Dental amalgam is a stable alloy made by combining elemental mercury, silver, tin copper and other metallic elements. Although dental amalgam continues to be a safe, commonly used restorative material, some concern has been raised because of its mercury content. However, the mercury in amalgam combines with other metals to render it stable and safe for use in filling teeth. Because amalgam fillings can withstand high chewing loads, they have remained a useful restoration. For many people they remain the best treatment option.