Hello, my 19-year-old brother has misaligned front teeth. Even though it is misaligned, it does not appear to be that bad. His girlfriend, on the other hand, would like it straightened. I've never used Invisalign and have little experience with it. We intend to see a dentist as soon as possible. Before that, I'd like to get some feedback from you. Is it better to use an Invisalign brace or a metal brace for misaligned teeth?