Inlays and onlays are a natural looking alternative to fillings. Made from porcelain for strength, they are custom made to fit and fill most types of cavities, and are almost impossible to distinguish from your natural teeth. Inlays and onlays use a precise replica of your tooth, made from a moulded impression.
Unlike conventional fillings, which require the removal of large amounts of healthy tooth, only the damaged portion of the tooth needs to be removed. Once placed, they are virtually undetectable in the mouth preserving much more of your natural tooth structure than standard amalgam fillings.
An onlay, which is similar to an inlay, covers the entire proximal surface and protects the cusps from fracture. The onlay is the best alternative for covering larger surface restorations. Treatment involves isolating the tooth and removal of the old fillings, inlays and onlays are then bonded securely into place.
Usually taking two appointments to complete, inlays and onlays look exactly like the rest of your tooth, and are so durable that they need not be replaced for many years.