Inlays and onlays are often referred to as partial crowns. They use the existing tooth as a base and fit the inlay or onlay onto the tooth. This is done to strengthen the tooth, restore its shape, and prevent further damage. An inlay is done when there is no damage to the cusps of the tooth and the inlay can be placed right on the tooth. An onlay is used when the damage is a little more extensive.
The decayed area of the tooth is removed during the procedure. Dr. White takes photo of the tooth & designs your onlay with the computer. Your tooth will look natural and you or anyone else won't be able to tell the difference.