I did not have a good experience with Dr. Engh. He constantly talked about other patients and their problems. I got invisalign through him and he didn't want to send me the final set of retainers. When I called him about it he asked me what my problem was - if I wanted to get him in trouble with the business bureau? He seemed extremely stressed over the phone. He asked me if I was hard up for cash after I told him I needed him to either send me the retainers or the cash I paid for them. He was completely inappropriate, unprofessional and rude. He does offer low prices, but you get what you pay for.