Endodontics is the branch of dentistry that treats diseases of the endodontium, the interior part of the tooth. Its main aim is to save natural teeth so that they keep all their masticatory functions and appearance of a healthy tooth. To remove all infected tissues and all bacteria, chemical and mechanical treatment of the canal system is required, and this is where UDG stands out with its range of instruments. Root treatment takes place in four stages : opening and accessing the canals, glide path, canal shaping and cleaning, and obturation. Retreatment may also be necessary if a previous treatment has to be corrected or improved. We will review these different stages below, as we present the solutions offered by UDG Dentaire.