Dental fillings are materials used to restore teeth that have been damaged by decay or injury. When a dentist identifies a cavity, they remove the decayed portion of the tooth and fill it with a suitable material. Common filling materials include amalgam, composite resin, and gold, each offering different benefits in terms of durability and appearance. The filling process is typically quick and straightforward. After numbing the area, the dentist cleans the cavity and applies the filling material to restore the tooth's shape and function. Proper care and regular dental check-ups can help maintain the longevity of dental fillings.