Dentists who have expertise in this field are called Orthodontist . People with mal-aligned or irregular teeth, crowded, overlapping teeth, or with gaps in between may require orthodontic treatment. Mouth breathing, nail biting, etc. In cases of severe crowding of teeth, there may not be any space available to align the teeth. Then it becomes necessary to extract some teeth to create enough space for the other teeth to get aligned correctly.
Braces are a common method of changing one's appearance.
They are usually placed by an orthodontist or a experienced general dentist. Orthodontics is the dental field that involves the diagnosis, prevention and treatment of problems caused by poorly positioned teeth. Orthodontic treatment works by exerting a gentle pressure over time to straighten teeth that are growing, or have already grown, out of place. The teeth are moved by adjusting the pressures on the teeth by the archwire. Sometimes, springs or rubber bands are used to help.