or·tho·don·tia /ˌɔrθəˈdɑn(t)ʃ(i)ə/
牙齒矯正術
orth·odon·tia /ˌɔrθəˈdɑnʧ(ɪ)ə/ 名詞
orthodontia
n : the branch of dentistry dealing with the prevention or
correction of irregularities of the teeth [syn: orthodontics,
orthodonture, dental orthopedics, dental
orthopaedics]