Over the past six years or so, I've had 3 root canals done by Dr. Krieger. I tell everyone that a root canal is painless because of my experience with Dr. K .Both he and his staff are professional and caring. Someone from his office always calls the next day to make sure I'm o.k. and had no problems overnight. He has taken me with no advance notice, when my dentist called 2 days before I left for vacation. I recommend him without any reservations,.