When are dental onlays or inlays recommended?
Ceramic inlays or onlays are also called partial crowns. We use them when the tooth is so beset by caries that it is impossible treat it with an ordinary filling, yet at the same time has enough healthy tooth substance that it does not warrant a polish for crowning.
Inlays or onlays are being made in a laboratory from porcelain based on the imprint of the rest of the tooth which is then cemented onto the healthy tooth substance by the dentist as the missing piece.
While the filling only remains in the tooth for a few years due to the wear and tear of the material, the same inlay can remain in the tooth for decades.