Endodontics deals with the treatment of diseases of the pulp and the periradicular tissues, ie the tissues that surround the tooth. Endodontic treatment, known to all of us as root canal treatment, aims at the sterilisation of the root canal system and its hermetic filling with biocompatible materials, in order to prevent microbial penetration and to enable the tooth to remain in operation for many years. Thanks to technological developments, the procedures are painless and only take a few sessions to complete.