Pen crown
Post crown and post tooth are outdated names for a tooth crown that is anchored in the tooth with a post. If a tooth whose height is reduced to such an extent that the tooth stump does not retain enough retention for a full cast, shell or veneer crown , for example due to dental caries or tooth fracture , is subjected to a root canal treatment, a post can be built into the Insert the root canal in order to stabilize the tooth and to obtain retention for further restoration in the form of a core build-up. This structure is then ground into the correct shape so that a crown can be made and inserted.
In the early days of the restoration Root post and crown were often made of one piece, the result was called by the developer Marshall Logan , (Pennsylvania, 1844-1885) Logan crown ( ger .: Logan crown ) or post crown. Nowadays, the post abutment and crown are mostly made separately and used one after the other. If a crown needs to be replaced, the post structure can be left in the tooth.
Individual evidence
- ↑ Klaus M. Lehmann, Elmar Hellwig, Hans-Jürgen Wenz: Dental Propaedeutics: Introduction to Dentistry; with 32 tables . Deutscher Ärzteverlag, 2012, ISBN 978-3-7691-3434-6 , p. 211 ( google.com ).