They can be made using composite or porcelain materials. The choice of material type is chosen by the dentist according to the structure of the tooth. Inlay-onlay restorations can be thought of as lab-made versions of clinical fillings. And these restorations are more aesthetic and better polished. It is a very conservative option compared to porcelain veneer treatment. Without the need for tooth cutting, only the caries is cleaned and the cavity is prepared according to the restoration. The restoration is cemented with adhesive resins.
The difference between inlay and onlay is only due to their different sizes.
