I am so terrified of the scans the have to do in my mouth. The plastic thing that goes far back, near your throat that you have to bite on. I am 17 and I've never been able to do those scans, but it is really crucial to do them now because I really need braces. How can I deal with the gag reflex? Also, will the teeth in the back of my mouth grow back if they pulled them? That would solve the scanning issue because there would be no teeth back there, right? =''S