Inlay, onlay, and overlay are ceramic indirect restorations. Their appearance and function are in between usual fillings and crowns. Difference between each of them is in their size. Inlay is placed in the middle of a tooth with untouched natural cusps. Onlay and overlay cover bigger surface of the tooth, including one or more cusps.
The advantage is that they require less tooth reduction what allows dentist to conserve more of a patient´s natural tooth structure. Compared to fillings, they adhere better to the tooth, are stronger and last longer. Also, they present superior aesthetic solution over time because of the lasting colour. During time fillings absorb pigments from various drinks and food that changes their colour. Furthermore, during polymerization fillings have a tendency of contraction that can lead to creating a gap between the filling and the surrounding tooth structure. Inlay, onlay and overlay do not contract to the same degree as a filling after being placed. They create a tougher and more durable surface for use when chewing.
These types of dental restorations are primarily used for back teeth like premolars and molars while for anteriors preferred option are veneers due to esthetic concerns.
Inlays, onlays and overlays are recommended to all the patients who have significant damage of a solid tooth tissue and would like a longer lasting, better solution than a classic restoration. They are an excellent choice for patients who want minimally invasive dental therapy because they do not require large teeth grinding as is the case with crowns.
They are created with CAD/CAM technology which guarantees precise and fast-made restorations.