How many sessions does root canal treatment take to complete?

Root canal treatment can be completed in 1-3 sessions, depending on the condition of the tooth, the number of canals, and the degree of infection. In some advanced cases, additional sessions may be required. During these sessions, the infection is cleared, the canals are shaped, and filled with appropriate filling material. After treatment, the tooth is usually protected with a temporary filling, and a permanent filling or crown is applied later.