Endodontics is a branch of dentistry which deals with the prevention and treatment of dental pulp diseases (the nerve of the tooth) and the support ligament from the apical area (the top of the dental root).

When the dental pulp is affected, the applied treatment involves its removal, the cleansing and sterilization of the radicular channels and their obturation. This treatment is necessary to maintain the existence and functionality of the tooth on the dental arch even if the "nerve" was affected.

A dentist with limited practice in endodontics can perform these treatments using modern equipment (microscope), specialty techniques and materials that are not available to a generalist dentist.