Dr. O'brien is a painless dentist. He is a professional with a relaxed and friendly manner. I have a real fear of needles and drills but knowing he has never hurt me in the 20-30 years I have gone to him, gets me in the door and into the chair. His office is comfortable and unpretentious and his staff is friendly and competent. I would recommend him to anyone and especially to those who want to know they are going to have a pain free procedure.