I am getting braces on thursday and my orthodonist did'nt say anything about me needing spacers but he said that he's going to "file down" my back molars. Im really nervous because I have really sensitive teeth. What should I tell him? Also, im really nervous about getting them on. Can someone please explaiin me the process of getting them on, step by step with all the details? Because I really want to know what to expect when I get there so im not as nervous hopefully.