Root canal treatment (RCT) is a dental procedure aimed at saving a severely infected or damaged tooth. The treatment involves removing the infected pulp, cleaning the root canals, and sealing the tooth to prevent reinfection. Symptoms that indicate the need for RCT include severe toothache, prolonged sensitivity, swelling, and gum abscess. The procedure is performed under local anesthesia and typically requires multiple visits. After the root canal, the tooth is often restored with a crown to enhance its strength and functionality. With proper care, a root canal-treated tooth can last a lifetime.