I had one negative experience where the doctor recommended replacing existing fillings and performing another filling. The first of these suggestions was overkill, it was not really needed, and I regret having agreed to it. In any case, the doctor then performed all four in the same go, which was a mistake, since he had to struggle excessively with one of the molars (and was getting visibly tired in the process). Eventually, he had to do it all over again on another occasion. The tooth was damaged in the process, and I've been left with a gaping space in that area, which constantly catches food. It's possible I now need a crown as a result of an unnecessarily and poorly performed replacement.
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