Orthodontist is a specialist who deals with the correction of teeth & jaws that are positioned improperly.
Crooked teeth are harder to keep clean. They are at risk of being lost early due to tooth decay & periodontal diseases. Even leads to TMJ syndrome (temporomandibular joint) neck, shoulder &back pain due to extra stress on chewing muscles. Correction of proclained (anteriorly placed) teeth, closure of gaps in between the teeth etc...
Dentist will decide what kind of appliance you need. Different types of appliances both fixed and removable are used to help move teeth retrain muscles and affect the growth of the jaws.
Dentist can determine whether you can benefit from ortho treatment. Based on medical and dental history, clinical examination, plasters models of your teeth & special X-rays & photographers and age factor. Orthodontists develop a treatment plan that’s right for you.