Porcelain inlays and onlays are to composite fillings that provide a high degree of strength. As such, they are excellent for restoring weakened back teeth. Inlays and onlays protect and restore large areas of decay, heavily restored teeth, or teeth under very heavy load (i.e. back teeth). Unlike crowns, they only cover a portion of the tooth, andtherefore require less tooth preparation.
They are made with porcelain, customized to your natural tooth shade, and made to look like your natural tooth. Porcelain inlays and onlays are made from the same strong, tooth colored material that is used for crowns and bridgework. A customized shade makes them virtually undetectable. The main differences between tooth-colored composite restoration and inlay/onlays is that the latter are fabricated using a laboratory process and different materials, thereby making them stronger and more durable.