Hi Everyone.. if you take care about your money.. don't spend a euro or dollar for this treatment. I spent 4000 euro.. around 5.500 dollars for all the treatment. I was on first time very happy but if you think that you have to bring the last mask.. ALL THE LIFE.. EVERY NIGHT (for avoid that your teeth move) let you think a little bit on that. With the traditional method, probably you go to spend less money but you have a result for the life. Think about that.