Dental post

Dental post
The dental post is used to provide a support onto which to cement a crown restoration on a tooth that has lost its crown. Posts may be designed in three ways: the first, by the impression of the root canal with silicone or some other impression material; second, by direct impression with acrylic; and third, using preformed pegs. These latter pegs may be metallic, fiberglass or carbon fiber. The ideal length for the post is of two thirds to three quarters of the total length of the dental root, and a minimum of 3 mm of root obturation must always be left (29)(33)(34).

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