When a lot of tooth has been lost, the dentist wants to restore the lost substance but also protect the remaining vulnerable tooth. In situations like this, it is not unusual to recommend an inlay or an onlay.
These types of restoration are usually indicated when the problem cannot be resolved just by filling the tooth but there is enough tooth left to allow restoration without preparing for a full coverage crown (link to this).
Inlays and onlays used to be routinely made from gold by a dental technician but the remarkable CEREC® technology allows us to make these restorations from tooth coloured ceramic. This really is cutting edge technology and allows a precision, durable and beautiful restoration to be prepared and placed in one visit.