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Post preparation (often called "post space preparation") is the clinical step of removing a portion of the root canal filling to create room for a dental post, which subsequently supports a core and crown.

: To provide retention for a core buildup in teeth with insufficient remaining structure while maintaining the integrity of the apical seal. Key Measurements : 55_1mp4

The diameter of the post should not exceed of the root diameter to prevent fractures. Post preparation (often called "post space preparation") is

Post preparation techniques and their effect on the apical seal - PubMed Post preparation techniques and their effect on the

: This specific method involves instrumenting the canal to a size 40/.04, fitting corresponding fiber posts, and using bioceramic sealers to ensure a seamless bond between the post and the root.

Leave at least of gutta-percha at the apex to ensure an adequate seal.