Is it okay to have braces? Some says it's haram.
Making cosmetic changes to one’s appearance is considered acceptable by most scholars if it is done to correct a defect (such as misaligned teeth). Therefore there is no issue with braces.
There are also scholars who approve of cosmetic changes meant for enhancement (and not just for correction), provided that it is not taken to excess.
For details see: Cosmetic surgery is permissible in Islam (with conditions)