The relationship between the root canal filling and post space preparation.

The restoration of root treated teeth often requires the use of posts. Their use may affect the quality of the seal of the root canal filling. The various aspects of the relationship between root canal filling and post space preparation are discussed in this review. It is recommended that the use of posts should be avoided whenever possible. Where the preparation of post space is required, immediate removal of gutta-percha using heated instruments and small Gates Glidden drills is the method of choice.