A dentist is very similar to your family doctor — great for things like check-ups, cleanings and filling cavities. An orthodontist, on the other hand, is a specialist who has two to three years of additional education following dental school to learn the special skills required to manage tooth movement and guide facial development. Orthodontists are experts in straightening teeth and determining what treatment option is the best for you. It's important to note that although dentists are legally allowed to provide clear aligners or braces, people should still research the qualifications of their specific doctor before beginning any sort of orthodontic treatment with them.