From a guys perspective (and also from someone who had braces a looooong time ago)...just be yourself, don't let the braces make you. If you're worth talking to and being around, a girl will overlook the braces. But if you constantly remind yourself they are there, then they'll be just as noticeable to others.

And if a chick doesn't give you time just because you have braces, screw it, you probably wouldn't have liked her anyway.