A great achievement, but it seems to have aged him 20 years. When I saw his after picture I thought he was in his 50's, but the article indicates he is 37. Maybe he has lost too much weight and needs to put on a bit to stop him looking so gaunt.
I took out Denplan some years ago. Up until then every time I went to this particular dentist I needed work done, after I started forking out a fortune to Denplan all of a sudden I had perfect teeth that needed no work done whatsoever. It's a rip off, avoid at all costs.