I am finishing up with my braces, I have had them for 4 years, my orthodontist is going to try to widen the arches a little, he says a couple of months, but I am wondering if it will be more like 6 months, how long does it take to expand/widen upper and lower arches by 1-3mm, also how will effect the contours in my face, will it make my lips look flatter?