How bad do your teeth have to be to get braces?

Well it really depends on crookedness of the teeth, the bite of the teeth (over bite, under bite, cross bite) and the spacing in the teeth. If you have slightly crooked teeth, any spaces in your teeth that can be considered "Large" or if you can tell that you have a underbite, overbite, or cross-bite, you should go to your local orthodontist instead of your dentist and get a check-up on that.