What is a dental crown?
A crown is a custom restoration that covers a prepared tooth. It can restore shape and function or help protect weakened structure. A crown may also form the visible tooth on an implant. A dental cap is another name for a crown. A crown covers the prepared tooth. An onlay covers selected chewing surfaces or cusps. The decision is about which parts need protection and how much sound tooth can be preserved, not just how large the filling looks.
