Inlays and Onlays

What's the difference between inlays and onlays?

Inlays and onlays, often called partial crowns, are placed over an existing tooth to help prevent further damage. Inlays and onlays are used to strengthen a damaged tooth, restore its shape and prevent further decay.
An inlay is used when there is no damage to the cusp of the tooth. The inlay is placed right on the tooth. If a tooth has more extensive damage, an onlay is used.

Placing an inlay or onlay on a tooth begins by removing the decayed area. A mold is prepared and sent to a dental lab for fabrication. The restoration is created from porcelain, gold or a composite resin. The restoration takes about 2 to 3 weeks to create. In the meantime, a temporary inlay or onlay will be made for the patient until the permanent version is ready.
When the permanent inlay or onlay is finished, it will be placed and set with an adhesive cement. Your tooth will look and feel natural again.