An inlay and onlay restorations are a custom made tooth-colored porcelain filling. They are popular because of resemblance of natural tooth color. Onlays and inlays are very durable and long lasting.
Onlays can be utilized to conservatively repair teeth that have large defective fillings or have been damaged by decay or trauma. Onlays are an ideal alternative to crowns (caps) because less tooth structure is removed in the preparation of onlays.