Hello friend, how are you doing? study to be a dentist and I am in practice and that is the fear that patients always have hahaha is difficult to ask why, maybe it is the sounds that some devices do, I laugh a lot your face haha there are many who cry too so yours is fine and I have heard that going to the dentist in other countries is very expensive I think it is good to have insurance but it is the same as everyone always want to charge more is the same story by the way I saw your teeth in photos and you have it very well maintained and white