Braces are wires that are held together by brackets glued to the permanent teeth. The wires and brackets can be made of metal or other materials. Each week or month (or other time the orthodontist decides) the braces may be checked, cleaned, or changed into a tighter wire. Braces are to make your teeth straight and also to correct the patients bite. Not everyone needs or will need braces. Crooked teeth are based on habits, and/or genetics.