title: Surgery-first approach using a three-dimensional virtual setup and surgical simulation for skeletal Class III correction.
abstract: A 19-year-old woman presented to our dental clinic with anterior crossbite and mandibular prognathism. She had a concave profile, long face, and Angle Class III molar relationship. She showed disharmony in the crowding of the maxillomandibular dentition and midline deviation. The diagnosis and treatment plan were established by a three-dimensional (3D) virtual setup and 3D surgical simulation, and a surgical wafer was produced using the stereolithography technique. No presurgical orthodontic treatment was performed. Using the surgery-first approach, Le Fort I maxillary osteotomy and mandibular bilateral intraoral vertical ramus osteotomy setback were carried out. Treatment was completed with postorthodontic treatment. Thus, symmetrical and balanced facial soft tissue and facial form as well as stabilized and well-balanced occlusion were achieved.
authors.affiliation: Department of Orthodontics, National Health Insurance Service Ilsan Hospital, Goyang, Korea.
authors.forename: Joon
authors.initials: J
authors.lastname: Im
authors.affiliation: Department of Oral and Maxillofacial Surgery, National Health Insurance Service Ilsan Hospital, Goyang, Korea.
authors.forename: Sang Hoon
authors.initials: SH
authors.lastname: Kang
authors.affiliation: Department of Orthodontics, National Health Insurance Service Ilsan Hospital, Goyang, Korea.
authors.forename: Ji Yeon
authors.initials: JY
authors.lastname: Lee
authors.affiliation: Department of Oral and Maxillofacial Surgery, National Health Insurance Service Ilsan Hospital, Goyang, Korea.
authors.forename: Moon Key
authors.initials: MK
authors.lastname: Kim
authors.affiliation: Department of Orthodontics, National Health Insurance Service Ilsan Hospital, Goyang, Korea.
authors.forename: Jung Hoon
authors.initials: JH
authors.lastname: Kim
keywords: Computed tomography; Digital models; Digital simulation; Surgery-first approach; Three-dimensional technique