oral and maxillofacial surgery

US /ˈɔːrəl ænd ˌmæksɪloʊˈfeɪʃəl ˈsɜːrdʒəri/
UK /ˈɔːrəl ænd ˌmæksɪloʊˈfeɪʃəl ˈsɜːrdʒəri/
"oral and maxillofacial surgery" picture
1.

a surgical specialty focusing on reconstructive surgery of the face, oral cavity, head and neck, mouth, and jaws

:
He underwent oral and maxillofacial surgery to correct his jaw alignment.
The hospital has a specialized department for oral and maxillofacial surgery.