[ awr-thuh-don-shuh, -shee-uh ]
/ ˌɔr θəˈdɒn ʃə, -ʃi ə /
treatment for the correction of irregularly aligned teeth, usually involving braces and sometimes oral surgery.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Word Origin and History for orthodontia
Online Etymology Dictionary, © 2010 Douglas Harper