Upon the recommendations of several friends, I went to Dr. Nipper for a root canal in January and another one in April. The first one I experienced pain in my jaw that lasted almost a week and the numming medication took five hours to go away. However, the second root canal was painless. He did not administer the same medication; consequently, the numming went away quickly and there was absolutely no pain afterwards. The fistula that had been draining for a couple of months disappeared after two days. I would highly recommend this dentist to anyone. Nice, friendly office staff and nice office atmosphere.