Dental inlays and onlays are used when old fillings need to be removed or replaced. A dental inlay is similar to a filling and fits inside the cusp tips (top edges) of the tooth. A dental onlay is more extensive and extends over the cusps of the treated tooth.
![InlayOnlay](https://normanfamilydentistry.com/wp-content/uploads/2017/08/InlayOnlay.png)