The dentist was really nice, attentive, and explained everything thoroughly; I also got a chance to talk to him in my native language which was a plus. The treatment can be a bit uncomfortable for some, because you need to stay still for 45 minutes, with small breaks every 15 min, and teeth can be sensitive afterwards (but sensitivity goes away in a couple of hours or so). My teeth are whiter now, but not by a lot (they were pretty yellow in the first place though)