I've heard that ALL braces serve a medical purpose. Crooked teeth is unhealthy and can cause gum disease, difficulty proper cleaning teeth, bad breath, Tooth wear/damage, and a higher risk of injury. Therefore braces are never FULLY cosmetic. However a friend of mine says that these are just excuses to make us feel like we're not just being vain. She says that most of the time braces are cosmetic and they should be seen the same as other uneeded cosmetic procedures like a nose job or implants. I don't think that braces should be considered mostly cosmetic like plastic surgery. I do believe that crooked teeth are not as healthy. I am against the idea of braces being considered the same as cosmetic surgery. I believe all braces do have a medical purpose unlike changing the shape of a big nose.