i have a plastic retainer like this ( http://www.greatsmiles.net/parts/RET.JPG ) one because i just got my braces off.
I got crest white strips supreme from my orthodontist and i was wondering if it's safe to wear my retainer over the strips.
I;ve heard of a whitening system with trays and gel, are the trays fitted exactly snug to your teeth? i'm wondering if the peroxide needs direct air to breath to be effective, b/c the strips themselves seem pretty breathable...
THANKS
