title: Segmental LeFort I osteotomy for treatment of a Class III malocclusion with temporomandibular disorder.
abstract: This article reports the case of a 19-year-old young man with Class III malocclusion and posterior crossbite with concerns about temporomandibular disorder (TMD), esthetics and functional problems. Surgical-orthodontic treatment was carried out by decompensation of the mandibular incisors and segmentation of the maxilla in 4 pieces, which allowed expansion and advancement. Remission of the signs and symptoms occurred after surgical-orthodontic intervention. The maxillary dental arch presented normal transverse dimension. Satisfactory static and functional occlusion and esthetic results were achieved and remained stable. Three years after the surgical-orthodontic treatment, no TMD sign or symptom was observed and the occlusal results had not changed. When vertical or horizontal movements of the maxilla in the presence of moderate maxillary constriction are necessary, segmental LeFort I osteotomy can be an important part of treatment planning.
authors.affiliation: Department of Pediatric Dentistry, Orthodontics and Community Health, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil. jansong@travelnet.com.br
authors.forename: Marcos
authors.initials: M
authors.lastname: Janson
authors.forename: Guilherme
authors.initials: G
authors.lastname: Janson
authors.forename: Eduardo
authors.initials: E
authors.lastname: Sant'Ana
authors.forename: Alexandre
authors.initials: A
authors.lastname: Nakamura
authors.forename: Marcos Roberto
authors.initials: MR
authors.lastname: de Freitas
mesh_terms: D006801:Humans; D008297:Male; D008313:Malocclusion, Angle Class III / Q000150:complications / Q000601:surgery*; D019340:Osteotomy, Le Fort / Q000379:methods*; D010155:Palatal Expansion Technique; D013705:Temporomandibular Joint Disorders / Q000209:etiology / Q000601:surgery*; D055815:Young Adult