or·tho·don·tics 
(ôr′thə-dŏntĭks)
(ôr′thə-dŏntĭks)n.
(used with a sing. verb) The dental specialty dealing with correction of irregularities of the teeth, such as malocclusion, often by the use of braces.
or′tho·dontic adj.
or′tho·donti·cal·ly adv.
or′tho·dontist n.