If tooth decay is left untreated it will eventually spread to the tooth’s pulp or nerve causing an infection and pain, this is an indication for root canal therapy. During a root canal, the infected nerve within the tooth is removed. The procedure feels no different than having a simple filling done, the key is proper anesthesia. We will ensure that you are properly numb before doing this or any procedure. After a root canal, the tooth will have to be built back up with a post and core. A root canal will weaken the overall structure of the tooth, so a crown is always recommended to add strength to the tooth and prevent a fracture.