A post and core crown is a type of dental restoration required where there is an inadequate amount of sound tooth tissue remaining to retain a conventional crown. A post is cemented into a prepared root canal, which retains a core restoration, which retains the final crown.

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When deciding whether or not a tooth requires a post and core crown rather than a conventional crown, the following must be established:

1. Presence of an adequate ferrule

2. Sufficient length of canal to retain a post

3. Curvature and overall anatomy of root canal system

4. Sufficient root (radicular) dentine thickness for post preparation

5. Restorability of tooth