Root canals, also known as endodontic treatments, are necessary when the nerve of a tooth is damaged or infected. The procedure removes the diseased pulp, cleans the canal thoroughly, and fills it to prevent recontamination. While there can be some discomfort during healing, the success rate of root canal therapy is high and preferable to preserve the natural tooth and prevent further complications. Regular dental check-ups and proper oral hygiene practices after treatment are essential for maintaining the health of the treated tooth.