it depends what expense you want to go to and how many teeth are crooked, there are other options instead of a brace. i had 2 teeth that were crooked despite wearing a brace and then a retainer which you have to wear pretty much for the rest of your days! well thats what the dentist told me. my teeth were perfectly straight after my brace but because i stopped wearing the retainer after about 6 mths my teeth moved back. i went to my dentist this time last year and he recomended thineers, they are very thin veneers that have a 5yr guarantee but can last as long as 15yrs, i can eat pretty much anything and they look fantastic, i had them fitted within the mth and the cost for 2 thineers was �390. not bad for a perfectly straight smile without the discomfort and hassle of a brace and easy on the pocket!