Not only do I have to wait longer than others to receive a new tray, my doctor never showed me how my teeth would move on a computer. He didn't show me what results to expect. He is giving me a great deal but, my teeth move fast and I feel like I am wasting time with that extra week. I don't know how I would approach him, for he is always teaching and explaining to his interns, with my questions and concerns. Please any advise would be very helpful! -Thank you