Root canal treatment ( RCT) is needed when the nerve of a tooth (known as the pulp) is affected by decay or infection. To save the tooth, Dr. Gupta at Acme Dental Lounge provides a procedure where the pulp (the living tissue inside the tooth), nerves, bacteria, and decay are removed and the space created is filled with special, medicated, dental materials, which restore the tooth to its full function. Root canal treatment is highly successful and usually lasts longer and the best option for saving the tooth if possible.