Who doesn't want a perfect smile? While few people have one naturally, almost anyone can get one with the help of their dentist. In addition to orthodontic treatment , which can straighten your teeth, recent advances in dental materials and techniques offer near-perfect teeth that are almost as strong as the originals. Things your dentist can do to improve your smile include Bleaching to make teeth whiter Repairing chips or rough spots with fillings that match your teeth Filling cavities with tooth-colored materials Reshaping teeth that don't match the others Closing gaps between teeth Covering broken teeth with porcelain crowns