title: The prevalence of TMJ osteoarthritis in asymptomatic patients with dentofacial deformities: a cone-beam CT study.
abstract: Osteoarthritis of the temporomandibular joint (TMJ) can be described as non-inflammatory arthritic condition that results in degenerative changes of the joint structures. The aim of this study was to evaluate the skeletal morphology of the TMJ in patients with osteoarthritis with severe skeletal malocclusions (Class II and Class III) and patients with Class I occlusion as controls. Cone beam computed tomography images of 45 Class I, 28 Class II and 44 Class III joints of Caucasian patients were assessed for the presence of any degenerative changes in the condyle and fossa/eminence complex as described in the research diagnostic criteria for temporomandibular disorders (RDC/TMD). In all groups, the most commonly observed features were articular surface flattening and subcortical sclerosis. A combination of features that corresponds to a diagnosis of osteoarthritis was observed in 3% Class I, 43% Class II and 20% Class III patient joints. In conclusion, degenerative TMJ changes were more common in patients with skeletal jaw discrepancies, but wide inter-individual variations can be observed even in patients with clinically similar malocclusions.
authors.affiliation: Department of Orthodontics, Riga Stradins University, Riga, Latvia. krisjane.zane@inbox.lv
authors.forename: Z
authors.initials: Z
authors.lastname: Krisjane
authors.forename: I
authors.initials: I
authors.lastname: Urtane
authors.forename: G
authors.initials: G
authors.lastname: Krumina
authors.forename: L
authors.initials: L
authors.lastname: Neimane
authors.forename: I
authors.initials: I
authors.lastname: Ragovska
mesh_terms: D058070:Asymptomatic Diseases; D001845:Bone Cysts / Q000000981:diagnostic imaging; D016723:Bone Remodeling / Q000502:physiology; D001862:Bone Resorption / Q000000981:diagnostic imaging; D002508:Cephalometry / Q000379:methods; D054893:Cone-Beam Computed Tomography / Q000379:methods*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008310:Malocclusion / Q000150:complications* / Q000000981:diagnostic imaging; D008311:Malocclusion, Angle Class I / Q000150:complications / Q000000981:diagnostic imaging; D008312:Malocclusion, Angle Class II / Q000150:complications / Q000000981:diagnostic imaging; D008313:Malocclusion, Angle Class III / Q000150:complications / Q000000981:diagnostic imaging; D008334:Mandible / Q000000981:diagnostic imaging; D008335:Mandibular Condyle / Q000000981:diagnostic imaging; D008437:Maxilla / Q000000981:diagnostic imaging; D009295:Nasal Bone / Q000000981:diagnostic imaging; D010003:Osteoarthritis / Q000150:complications* / Q000000981:diagnostic imaging; D054850:Osteophyte / Q000000981:diagnostic imaging; D010026:Osteosclerosis / Q000150:complications / Q000000981:diagnostic imaging; D013701:Temporal Bone / Q000000981:diagnostic imaging; D013704:Temporomandibular Joint / Q000000981:diagnostic imaging; D013705:Temporomandibular Joint Disorders / Q000150:complications* / Q000000981:diagnostic imaging; D055815:Young Adult