Inlays and Onlays
Inlays and onlays are two similar methods for restoring normal tooth structure after damage. These porcelain, gold, or white composite fillings are made in a laboratory from a mold of the teeth, unlike fillings that are placed during an office visit. Inlays and onlays are cemented or bonded to the affected teeth, and serve to strengthen the tooth structure and prevent further damage while restoring the shape of the teeth.
Inlays
An inlay repairs the chewing surface of a tooth, and is a natural-looking option for repairing cavities along with crowns and dental fillings. Inlays are more durable than dental fillings, and they strengthen the teeth and resist biting forces. They can be cared for in the same way as you care for your natural teeth.
Onlays
Onlays are created the same way as inlays from a mold of the teeth, but are used for more extensive structural damage and tooth decay that affects the cusps (the raised points) of the teeth. They are a less expensive alternative to full-coverage crowns and are easier to clean.