Well ..lucky there are you guys out there to solve n provide suggestion for me..the sharp edges are cutting up my tongue and lips..it drive me crazy when most of the time I need to attend to calls..I tried to file but still doesn't help till I apply the wax which the clinic gave it to me..well thank goodness it save my day..but i have a concern..will the wax cause build up with cavities ???oh my god I paid 7300 plus for sharp edges..must as well get metal braces..