Dr. Allen is an excellent endodontist. I was one of his first patients when he was starting his practice and at that time he was thorough but a bit slow. After 15 years of practice, however, and new high-end XRay technology, he has become a truly great dentist. In my last vist, I experienced virtually no pain (other than the shots, of course) during a root canal of a molar which had a crown on it. His professionalism is very reassuring. His facilities are first rate.