Orthodontics is the study of dentistry that is concerned with the treatment of improper bites, and crooked teeth. Orthodontic treatment can help fix your teeth and set them in the right place. Orthodontists usually use braces and retainers to set your teeth.
If you experience an orthodontic emergency, please consult this information (.pdf).
If you have braces, and would like information on proper hygiene techniques, download this brochure (.pdf).
For general background information on orthodontics, visit this site.