If you have crooked teeth and/or a misaligned bite, there are a variety of treatments that can help straighten your teeth, including braces and retainers, and removable or fixed custom-made tools that cover the outside of your teeth and help them keep their shape. position. Braces are dental appliances that help correct problems with your teeth, such as crowding, crooked teeth, or misaligned teeth. Many people wear braces as teenagers, but adults have them too. As you wear them, braces slowly straighten and align your teeth so you have a normal bite. Some people get braces to adjust their smile.