Onlays refer to treatment on tooth cusps or biting areas/surface. Onlays or outline fillings are designed for decay that expands from one tooth cusp to another; they are placed in the same way as Inlays. An impression of the decayed tooth is taken at first then a temporary onlay is applied to it. On the next visit, the new onlay will be applied.
Inlays and onlays are usually made from porcelain, composite resin, and sometimes even from gold. Because they can be created from tooth-colored materials, inlays and onlays are often used to replace metal dental fillings for patients who desire a more natural looking smile. Read on to find out about how inlays and onlays may be able to enhance your smile's health and appearance.