If more than half of the biting surface of the tooth is damaged, the tooth may benefit more from an inlay or onlay.
These can be made of ceramic or gold. These pieces are cemented onto the tooth to replace the damaged area of the tooth. An inlay is more like a filling and is used within the cusp tips of a tooth. An onlay is a more extensive reconstruction that spans one or more cusps of the tooth.
These are bonded to the teeth with special resins and can increase the strength of the tooth by as much as 75 %. Traditionally, gold has been the material of choice. In recent years, ceramic has become more popular due to its strength and color, which match the natural color of your teeth.
This partial replacement lasts twice as long as a conventional plastic filling.