He failed to properly perform a root canal on me and a qualified endodontist had to fix his mistakes--failure to clean and fill an entire canal, thus allowing bacteria to reside until redone. Further, when I had problems with that same tooth 3 years post root canal, he told me it was because I was grinding my teeth and merely adjusted my bite. When the problem ended up being the need for another root canal, he was not available via his emergency number on a Friday. I ultimately sought pain relief at a hospital emergency room until I could get into an endodontist on Monday morning.