A filling is used to restore a tooth that is suffering from decay, back to its regular shape and normal function. The procedure for filling a cavity consists of Dr. Razavi removing the decayed material from the tooth, cleaning the tooth, and then filling the cavity with a composite resin. The purpose of the filling is to keep the tooth from becoming further damaged due to decay. At Razavi Dental, we utilize using only tooth-colored, mercury-free dental fillings as a part of our restorative dental services.