Is dental surgery cosmetic or medical?

Nobody • I`m not mad it`s just my face

I was having a discussion with my cousin the other day and she mentioned she was having dental surgery. She had braces twice and She wouldn't use her retainer Because she lost it both times. I asked "isn't that cosmetic surgery? "

She said it was medical, but there is nothing wrong with her mouth. Shes doing to get her teeth straight for sure this time (NOTHING AGAINST IT MORE POWER TO HER) but it got me wondering. Is dental surgery cosmetic or medical, or can there be exceptions Where it is medical but also helps appearance?

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