title: Evaluation of the correlation between disc displacements and degenerative bone changes of the temporomandibular joint by means of magnetic resonance images.
abstract: The aim was to evaluate the correlation between disc displacements and degenerative bone changes in magnetic resonance images (MRI) of 112 patients of both genders, with signs and symptoms of temporomandibular disorder. For this purpose, a calibrated examiner evaluated 224 MRI by assigning scores for the displacement of the disc and degenerative bone changes. Disc displacement was found in 58.42% of the temporomandibular joints (TMJs) evaluated. Anterior displacement of the disc with reduction was the most common, occurring in 67.18% cases of joints with disc displacement. Degenerative bone changes were observed in 53.94% of the TMJs analysed. There was significant correlation between disc displacement with reduction and condylar flattening, disc displacement without reduction and condylar flattening, disc displacement without reduction, and associated degenerative bone changes (flattening and erosion, flattening, osteophyte and erosion; flattening and osteophytes, erosion and sclerosis, flattening and sclerosis, flattening, osteophytes and sclerosis). The correlation between advanced cases of disc displacement and the occurrence of degenerative bone changes emphasises the importance of MRI for an accurate diagnosis and development of an appropriate treatment plan and in cases in which clinical examination is not sufficient for these purposes.
authors.affiliation: Faculty of Dentistry, Federal University of Juiz de Fora, Brazil.
authors.forename: Isabela Maddalena
authors.initials: IM
authors.lastname: Dias
authors.forename: Patrícia Rocha
authors.initials: PR
authors.lastname: Coelho
authors.forename: Neuza Maria Souza
authors.initials: NM
authors.lastname: Picorelli Assis
authors.forename: Fabiola Pessôa
authors.initials: FP
authors.lastname: Pereira Leite
authors.forename: Karina Lopes
authors.initials: KL
authors.lastname: Devito
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012737:Sex Factors; D013704:Temporomandibular Joint / Q000000981:diagnostic imaging / Q000473:pathology*; D019224:Temporomandibular Joint Disc / Q000000981:diagnostic imaging / Q000473:pathology; D013705:Temporomandibular Joint Disorders / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology*; D055815:Young Adult