i have had braces for nearly 3 years and a couple weeks ago i notice what seemed to be a white spot. the spot comes just above the bracket and i was wondering if there is anything i can do to reduce the appearance while i still have braces? and how can you tell if it is a shallow stain or not? can whiting systems help remove it? is it okay to use whiting toothpaste and mouthwash while you have braces?