Root canal therapy is a dental procedure used to treat infection or damage within the tooth pulp, which contains nerves and blood vessels. During the procedure, a dentist removes the infected or damaged pulp, cleans the inside of the tooth, and seals it to prevent further infection. This helps save the tooth and alleviates pain. After the root canal, the tooth may require a crown to restore its strength and function. The procedure is typically performed under local anesthesia, ensuring that patients experience minimal discomfort. With proper care, a treated tooth can last a lifetime.