A dental filling or restoration is designed to repair a cavity in your tooth caused by decay. Amalgam (silver metal) fillings are the most common and are made from a mixture of mercury and different metals. However more aesthetically pleasing composite white fillings are now available.
The choice of filling material for any cavity will depend upon many factors including the size of the cavity, the type of tooth being treated and how heavy your bite is in the area being treated. Please ask your dentist as to what your treatment objectives are, and this will help identify which fillings are most suitable to you.