Inlays and onlays are a solution between filling and crown (covering).
Inlays or onlays are used when there is not enough tooth structure to support the filling and the tooth is not damaged enough to be covered with a crown.
Compared to inlays, onlays cover a larger area.
The life of the inlay or it depends on the material it is made of, the condition of the tooth, chewing forces, and the patient's attention to oral hygiene. Generally, they continue their duties in a healthy way for decades.
How to Apply Inlay and Onlay?