Endodontic treatment, commonly known as a root canal, is a dental procedure designed to save a tooth that has become severely decayed or infected. It involves removing the damaged or infected pulp from inside the tooth, which contains nerves and blood vessels. After the pulp is removed, the root canals are carefully cleaned, disinfected, and shaped before being filled with a biocompatible material, typically gutta-percha, to seal the space and prevent future infections. The procedure is typically completed under local anesthesia to ensure patient comfort. Once the root canal is finished, the tooth is usually restored with a crown or filling to protect its structure and functionality, allowing it to remain in the mouth for many years.