WHEN SHOULD A FILLING BE REPLACED?
Dental fillings are used to replace the tooth structure lost from decay, also known as cavities. When your dentist removes the decay from your tooth, they use a filling to strengthen your tooth once again. Dental fillings can be made of multiple kinds of materials such as gold, porcelain, or composite resin. Dentists use composite resin most often because it matches the natural color of the tooth.