Inlays and Onlays Dental inlays and onlays are restorations used to repair posterior teeth that have a mild to moderate amount of decay. They can also be used to restore teeth that are cracked or fractured if the damage is not severe enough to require a dental crown. Inlays and onlays are usually made from porcelain and sometimes even from gold. Esthetic Dentistry, Dental Clinic, Dentist, Dental Laboratory, Dental Bridge, Dentistry, Cosmetic Dentistry, Dental Aesthetics, Dental