Root canal treatment RCT is a dental procedure used to treat infection or damage within the tooth’s pulp. The pulp, which contains nerves and blood vessels, can become infected due to deep decay, cracks, or trauma. During RCT, the infected pulp is removed, and the inside of the tooth is carefully cleaned, disinfected, and sealed to prevent further infection. This treatment helps relieve pain, save the natural tooth, and restore normal function. With proper care and restoration, a tooth treated with RCT can last for many years