Onlays

Onlays are essentially large fillings. The term only is used when it is necessary to replace a substantial portion of the crown. Onlays are used to restore teeth that have become severely damaged by decay or wear, and must be made of durable material to withstand heavy chewing pressure. Metals are most commonly used, although porcelain is occasionally used. The use of metal onlays is generally limited to the back teeth for cosmetic reasons. They are fabricated, inserted and cemented in place like cast metal fittings.