Endodontic treatment, more commonly known as a root canal, is vital for saving the natural tooth and eliminating continued acute pain when a tooth is infected and the tissues around the tooth are inflamed. Its cause is usually a cavity, a fracture, dental trauma, or bruxism, which is the wear of teeth due to grinding. The treatment consists of cleaning and disinfecting the damaged tooth, removing the damaged nerve, and thoroughly filling and sealing the cavity where the nerve goes, to prevent the passage of bacteria and infectious toxins and to avoid another infection. With local anesthesia, the patient does not notice any pain. To protect the tooth, which may become brittle due to its rebuilding, often a crown is recommended.