title: Observation of three cases of temporomandibular joint osteoarthritis and mandibular morphology during adolescence using helical CT.
abstract: Temporomandibular joint (TMJ) osteoarthritis (OA) is a potential cause of craniofacial deformity. If TMJ OA appears during orthodontic treatment, the mandible usually rotates posteriorly, resulting in an unsatisfactory profile, especially in patients with pre-treatment mandibular retrusion. Although it is important to confirm the kind of TMJ pathosis at the start of orthodontic treatment, the relationship between TMJ OA, condylar remodelling and changes in craniofacial morphology remains unclear because of a lack of longitudinal studies. Elucidating this relationship might allow better prediction of post-treatment craniofacial morphology. In the present case reports, helical computed tomography and cephalometry were used to analyse relationships between the pattern and location of condylar remodelling and the changes in craniofacial morphology in three patients with TMJ OA.
authors.affiliation: Division of Orthodontics, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan. kazuhiro@dent.niigata-u.ac.jp
authors.forename: K
authors.initials: K
authors.lastname: Yamada
authors.forename: I
authors.initials: I
authors.lastname: Saito
authors.forename: K
authors.initials: K
authors.lastname: Hanada
authors.forename: T
authors.initials: T
authors.lastname: Hayashi
mesh_terms: D000293:Adolescent; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000150:complications / Q000000981:diagnostic imaging; D008137:Longitudinal Studies; D008334:Mandible / Q000000981:diagnostic imaging*; D008335:Mandibular Condyle / Q000000981:diagnostic imaging; D010003:Osteoarthritis / Q000150:complications / Q000000981:diagnostic imaging* / Q000628:therapy; D019224:Temporomandibular Joint Disc / Q000000981:diagnostic imaging / Q000473:pathology; D013705:Temporomandibular Joint Disorders / Q000150:complications / Q000000981:diagnostic imaging* / Q000628:therapy; D036542:Tomography, Spiral Computed / Q000379:methods