title: Skeletal Class III malocclusion with thin symphyseal bone: a case report.
abstract: OBJECTIVE
  To describe the management of a severe skeletal Class III patient with thin symphyseal bone and alveolar bone covering the mandibular incisors.
  
  
  METHODS
  A 24 year-old female presented with a skeletal Class III malocclusion characterised by thin alveolar bone in a mildly crowded, mandibular incisor region. Computerised tomography (CT) assisted in the determination of possible tooth movement within the anterior mandibular alveolar bone. The finalised treatment plan aimed to align the maxillary and mandibular dental arches following the extraction of the maxillary right first premolar and the mandibular right permanent lateral incisor. The surgical repositioning of the maxilla and mandible with a LeFort I osteotomy and a bilateral sagittal split osteotomy (BSSO) would follow.
  
  
  RESULTS
  After treatment, an acceptable facial profile and a solid intercuspation of the teeth were obtained. Significant root resorption was not observed. The occlusion remained stable with normal overjet and overbite after two years of retention.
  
  
  CONCLUSIONS
  CT examination provided an assessment of the three-dimensional morphological characteristics of anterior alveolar bone which enabled an evaluation of possible tooth movement.
authors.affiliation: Department of Orthodontics and Dentofacial Orthopedics, Osaka University, Osaka, Japan.
authors.forename: Eriko
authors.initials: E
authors.lastname: Hikida
authors.forename: Chihiro
authors.initials: C
authors.lastname: Tanikawa
mesh_terms: D000539:Alveolar Process / Q000000981:diagnostic imaging*; D001641:Bicuspid / Q000601:surgery; D002508:Cephalometry / Q000379:methods; D003724:Dental Arch / Q000000981:diagnostic imaging; D005146:Facial Asymmetry / Q000628:therapy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D007180:Incisor / Q000601:surgery; D008313:Malocclusion, Angle Class III / Q000000981:diagnostic imaging / Q000628:therapy*; D008334:Mandible / Q000000981:diagnostic imaging*; D061330:Multidetector Computed Tomography / Q000379:methods; D009811:Odontometry / Q000379:methods; D018704:Orthodontic Retainers; D019340:Osteotomy, Le Fort / Q000379:methods; D059229:Osteotomy, Sagittal Split Ramus / Q000379:methods; D010347:Patient Care Planning; D014081:Tooth Extraction / Q000379:methods; D014087:Tooth Movement Techniques / Q000379:methods; D055815:Young Adult