orthognathic
adjective medical specialized uk/ˌɔː.θɒɡˈnæθ.ɪk/ us/ˌɔːr.θɑːɡˈnæθ.ɪk/
正颌学的
relating to moving the position of the jaw (= either of the two bones in your body in which the teeth are held)
orthognathic surgery/treatment 正颌外科手术/治疗