Orthodontics is a special type of tools that dentists use for many cosmetic and medical purposes. These are the most important goals that orthodontics are used to achieve: moving the teeth gradually from their place, and obtaining a smile in which the teeth are lined up in a regular manner. Improving the occlusion of the jaws and the occlusion of the upper and lower jaw teeth on each other. Expanding the jaws or moving the protruding front teeth back.