An indirect filling is very similar to white filling with the difference being that indirect fillings are only made in a dental lab then sent back to your dental office and bonded on the prepared tooth.
There are two types of indirect filling an inlay or onlay.
An inlay restores normal tooth anatomy by filling in a cavity created by decay or trauma. Inlays can be made from composite resin porcelain or gold. Damaged
An onlay is similar to an inlay but is extended to cover the entire chewing surface which protects cusps from fracture. Sometimes an onlay is called as a partial crown. Onlays may be composed of composite resin porcelain or gold.
An onlay would be recommended for larger restorations including those that involve both side surfaces and in front or rear surfaces of a tooth.