Having crooked teeth can really affect your self-esteem. When you're at an event and someone pulls out their smartphone to take a picture, do you feel self-conscious? Do you try to hide your teeth, keeping your mouth closed when you smile? If so, you've probably considered cosmetic dentistry at some point in your life. Maybe you were afraid or you didn't want to commit to such a big change, or maybe the idea of ugly metal on your teeth made you cringe. Metal braces, though they improve your smile eventually, can make your smile look worse while they're on. They can give you yet another reason to keep your mouth closed and avoid showing off your pearly whites.