Braces can correct a wide range of dental issues, including crooked, gapped, rotated or crowded teeth. There are several types of braces, including traditional metal braces, ceramic braces and clear aligners like Invisalign. Braces improve your smile’s health, function and appearance. Crooked teeth. Crowded teeth. Gapped teeth. Malocclusion (issues with the way your teeth fit together).Such problems can be corrected by using braces.