An onlay is a very conservative way of restoring and strengthening a tooth, while allowing for a beautiful esthetic result.
When a back tooth has had damage either from a large cavity, or commonly from part of the tooth breaking, an onlay is an excellent solution to restore that tooth and provide the best long-term prognosis.
Porcelain onlays replace missing or weakened tooth structure and are bonded to the tooth. Once bonded, the onlay strengthens the tooth, minimizing the risk of future fracture. Strength of the onlay, it's natural appearance, and the conservative nature of tooth preparation make onlays an ideal solution for preserving teeth in a healthy state.