Yeah insurance covered the tooth positioner.
I went from retainer to braces/retainer (wearing the retainer when I could) to tooth positioner after I got the braces removed. I think it's mainly used for final adjustments and to indefinitely keep your teeth in place. Which is why I want to talk to a max-fax surgeon, cause I don't think a tooth positioner will be that effective for my jaw issues, except for somewhat closing the bite.
^ That's what they look like. You stick them in hot water and when it gets soft enough, you put it on your teeth and it'll mold to fit your teeth, then slowly pull them into position.