Inlays and onlays are an alternative to tooth fillings in certain cases of damage/decay. Although they can be made of porcelain, gold, or composite resin, the use of porcelain is more advantageous due to its strength and ability to match the tooth’s natural color making it the ideal choice for both functional and aesthetic reasons.
Dental inlays and onlays are ideal when the damage/decay to a tooth is neither severe enough for a dental crown nor bad enough that a filling is not possible. While inlays help prevent further damage/decay to a tooth’s upper surface (enamel) inside the tooth cusps, onlays are needed if the tooth decay extends out to one or more of the cusps.