title: Evaluation of temporomandibular joint disc displacement as a risk factor for osteoarthrosis.
abstract: Temporomandibular joint (TMJ) disc displacement is a clinical sign often found in patients with temporomandibular disorders (TMDs) and associated with TMJ osteoarthrosis. Osteoarthrosis is a degenerative joint disease that may be associated with pain and functional disability. The aim of this study was to evaluate the odds ratio (OR) of joints with disc displacement presenting osteoarthrosis via magnetic resonance imaging (MRI) analysis. In total, 224 TMJ images from patients with signs and symptoms of a TMD were evaluated. The OR, a measure of association, was used to calculate the likelihood of TMJ disc displacement (with or without reduction) with osteoarthrosis. Joints with anterior disc displacement with reduction (ADDwR) and anterior disc displacement without reduction (ADDwoR) were 2.73- and 8.25-times, respectively, more likely to have osteoarthrosis. A nine-times greater likelihood of osteophyte occurrence was observed in cases of ADDwoR, whereas a lower OR for their occurrence (OR 2.96) was observed in cases of ADDwR. The significant OR of joints with disc displacement presenting osteoarthrosis, particularly in cases of ADDwoR, emphasizes the importance of accurate assessment of changes in disc position, which may be associated with other painful and functional disorders of the TMJ.
authors.affiliation: Faculty of Medicine, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil.
authors.forename: I M
authors.initials: IM
authors.lastname: Dias
authors.affiliation: Faculty of Dentistry, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil.
authors.forename: P C de F
authors.initials: PC
authors.lastname: Cordeiro
authors.affiliation: Faculty of Dentistry, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil. Electronic address: karina.devito@ufjf.edu.br.
authors.forename: K L
authors.initials: KL
authors.lastname: Devito
authors.affiliation: Faculty of Medicine, Arthur Sá Earp Neto Faculty, Petrópolis, RJ, Brazil.
authors.forename: M L F
authors.initials: ML
authors.lastname: Tavares
authors.affiliation: Faculty of Medicine, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil.
authors.forename: I C G
authors.initials: IC
authors.lastname: Leite
authors.affiliation: Faculty of Medicine, Arthur Sá Earp Neto Faculty, Petrópolis, RJ, Brazil.
authors.forename: R de S
authors.initials: Rde S
authors.lastname: Tesch
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000473:pathology*; D054850:Osteophyte / Q000473:pathology; D012189:Retrospective Studies; D012307:Risk Factors; D019224:Temporomandibular Joint Disc / Q000473:pathology*; D013705:Temporomandibular Joint Disorders / Q000473:pathology*
keywords: articular disc; degenerative bone change; magnetic resonance imaging; temporomandibular joint