If you ask most people the question ÔÇ£How do braces work to close gaps or straighten teeth?ÔÇØ, they’ll probably say that braces work by applying a gentle but sustained force that (over time) will move teeth to the desired position. While this is a perfectly acceptable answer, it’s only really half the story. In reality, braces are simply the vehicle used to accelerate tooth movement, but it’s underneath the surface where the really clever stuff happens.