Dr. Thien T. Tang stated that I needed a new crown because the current one "had a fracture". I went to another Dentist who stated the crown was fine and he re cemented it (after showing me under an ultra light). That was about 2 years ago and I haven't had any issues with it. I filed a complaint with the Dental Board and what a bunch of red tape. They do nothing! Check this guys record on the website. He's had many complaints. Only a fool would go to Prestige Dental. I only went originally because he's close to where I lived at that time. Check his dental board history of complaints!