I happened to run across this site while googling Dr. Barta's phone number. Myself and my family have been patients of his for several years. He's done a variety of work on my teeth, from cleaning to making bridges and everything in-between. His work, demeanor, and entire office environment has never been anything short of excellent. He is a top-notch dentist with a top-notch practice. Understandably, no one can please everyone, all of the time. It sounds like a couple of people have been dissatisfied, but on one bad review the note was that Dr. Barta had let a problem get out of hand. To that person, I would ask how persistent he/she was in expressing the problem to Dr. B.
Your Dr. or Dentist can't read your mind. The patient has a responsibility to complain, and be persistent, if something is bothering them. I feel like I know Dr. Barta well and can't believe that he would ignore what he knew to be a problem, with one of his patients. He's too good a dentist for that. I can vouch for him personally and have recommended him to friends.