Root canal treatment is a dental treatment procedure performed when the pulp tissue inside the tooth is inflamed, infected or damaged. Treatment aims to protect the tooth and prevent its loss. Initially, the dentist evaluates the patient’s complaints and x-ray images and decides whether root canal treatment will be required. During the procedure, anesthesia is provided around the tooth and an opening is created on the upper part of the tooth to access the pulp tissue. Inflamed or infected tissue is cleaned, root canals are cleaned and disinfected with special tools. Finally, the root canals are filled and the upper part of the tooth is restored. After root canal treatment, it is important to maintain dental health with oral hygiene and regular dentist check-ups. This treatment is an effective method to prevent tooth loss and relieve pain.