Hi, and welcome to Neuro Talk. I know Bryanna will post to you. She does indeed know alot about root canaled teeth. This is my take on it. re-treating an infected tooth is a waste of money. In fact root canals in general arn't so good as part of the infection is left deep inside the small crevices, and this is what happened to you. I have a besnit. A two tooth partial that fits just wonderfully, and was not that expensive. I didn't have the money for an implant either. I wish you all the best. ginnie