Composite Inlays & Onlays ​ Composite Inlays and Onlays are unique dental restoration processes used to repair damaged teeth and prevent further tooth decay. Although similar, they each serve a particular role in restoring teeth to natural, healthy forms.

Inlays are used when the decay or damage is within the indented top surface (cusp) of a tooth. This is a smaller area to work in and inlays tend to be confined to that small area. Think of the tooth as a small cup and inlays are restorations done “in” the cup.

An onlay, on the other hand, extends beyond the rim of the cup, going over the tooth cusp or involving more than one cusp. Onlays are used when the cavity or damage reaches one or more cusps of the tooth or teeth. This often involves reconstruction of the cusp which has been worn or broken away. If the cavity or tooth damage is more severe, effecting more than the area within the cusps or just beyond, it may be necessary to have a crown placed. However if it is confined, a less invasive onlay or inlay may be used.