I had to have a front crown replaced and my dentist also did a root filling. During the course of treatment right up to the point of having the permanent crown fitted I told him it didn't feel right - I had a strange sensation in the tooth. He said root fillings sometimes did that. Some months on when I had another visit I once again told him it still didn't feel right. He then took an xray and said it looked like the root was overfilled and I would have to go to a specialist to get it rectified but at my cost of approx £1000. I had already paid £700 to him for the filling and crown. Should my dentist take some responsibility for the cost of rectification