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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/3858

Title: Evaluation of the relation between the horizontal condylar angle and the internal derangement of the TMJ – a magnetic resonance imaging study
Other Titles: Pesquisa Odontológica Brasileira
Authors: Rebello, Iêda Margarida Rocha Crusoé
Campos, Paulo Sérgio Flores
Rubira, Izabel Regina Fischer
Panella, Jurandyr
Mendes, Carlos Maurício Cardeal
Keywords: Temporomandibular joint;Nuclear magnetic resonance;Temporomandibular joint disk;Articulação temporomandibular;Ressonância magnética nuclear;Disco da articulação temporomandibular
Issue Date: 2003
Publisher: Pesquisa Odontológica Brasileira
Abstract: This research aimed at assessing the relation between the horizontal condylar angle (HCA) and the internal derangement (ID) of the temporomandibular joint (TMJ), as a result of interference by the TMJ disk, in individuals undergoing magnetic resonance (MR) scans. The sample included a total of 144 TMJs (sagittal and coronal views) of 72 subjects, 15 of whom were male and 57 female, with ages ranging from 15 to 70. The scans were made in a Signa system (GE) model at a magnetic field magnitude of 1.5 T. Sixty-eight TMJs were found to be normal, while 46 showed anterior displacement with reduction. Of these, 41 had some kind of adaptive change in the condyle, while 5 showed degenerative changes. Anterior displacement without reduction was found in 29 joints, 12 of which showed adaptative changes in the condyle, while 17 showed degenerative changes. Only one posterior displacement of the articular disk was recorded. For the TMJs in which disk displacement was found, such values achieved 24.69º on the right side, and 22.94º on the left side. Hence, it was possible for us to conclude that the HCA tends to increase in those TMJs where ID is present. For contralateral TMJs, a strong association was observed between HCA values (57.8%), state of normality (69.7%), and ID (66.7%). To corroborate such findings, a correlation between contralateral HCA values (63.31%) and the diagnosis for contralateral TMJs (68.05%) was determined. Thus, we could infer that there is a tendency between contralateral TMJs to share characteristics and conditions.
URI: http://www.repositorio.ufba.br/ri/handle/ri/3858
ISSN: 1517-7491
Appears in Collections:Artigos Publicados em Periódicos (Medicina)

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