When the nerve and live tissue of a tooth is infected due to decay, a root canal treatment is indicated in order to clean the canals of the roots from of all the inflamed and infected tissue. This usually saves the tooth by removing the pulp, nerve tissue, and bacteria inside the tooth. Then the cleaned canals are replaced with medicated dental materials that fill the space of original pulp and nerve tissue. Patients choose to have root canals treatment preformed when they wish to save a tooth that would otherwise have to be removed. Most patients believe that extracting the tooth is the best idea. However, removing a tooth is costly and leaves a space that may cause problems for other adjacent and opposing teeth. To avoid this problem, the removed tooth should be replaced by a dental implants, bridge, or removable partial denture, which is also costly.Root canals performed at Advanced Gentle Dentistry of Park Slope are 90% successful and will usually last a lifetime. On occasion a tooth may have to be treated for new infections.