Root canal treatment means removing the inflamed or dead dental pulp, which causes pain, abscess and cyst formation in the teeth, from the root canals, cleaning the formed cavity and filling it completely with a tissue-friendly substance that is not harmful to health.

Under the enamel and dentin layers of the tooth, the part where the vessel and nerve package that provides the vitality of the tooth is located is called the pulp of the tooth. This part, which is called the "pulp chamber" in the crown of the tooth, extends to the end of the tooth roots. If the pulp becomes inflamed for any reason, the pulp of the tooth is removed, the channels must be cleaned and then filled.