On tooth #8 I has a tooth that was dying and required internal bleaching. when that did not work, we decided to crown the tooth, but first we decided on a root canal so no further damage would occur. A year later I woke up with major tooth pain and a numb nose and upper lip. I consulted my dentist and after xrays it was determined that it was abcessed and I was referred to an entodontist. The entodontist said that the root canal "failed" due to excessive spacing left after the first root canal was performed, allowing bacteria in the tooth. He redid the root canal and after seeing the "correct" way it should look realized my dentist was at the least negligent for the "mishap" After correction my upper lip and nose are still numb and he said I may never get feeling back. Is it unreasonable to want my money back or is this common? My dentist said this happened because he is not a specialist! If I would have known that I would have never let him do it in the first place...I am double paying for a root canal!