Condyle Excursion Angle, Articular Eminence Inclination, and Temporomandibular Joint Morphologic Relations With Disc Displacement

Katharina Alves Rabelo, Saulo Sousa Melo, Marianna Guanaes Gomes Torres, Paulo Sérgio F. Campos, Patrícia Meira Bento, Daniela Pita de Melo

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Purpose The aim of this study was to evaluate the relations of the condyle excursion angle (CEA) and the morphology and morphometry of the articular eminence to disc displacement (DD) using magnetic resonance imaging (MRI) of symptomatic patients. Materials and Methods MRIs of 199 temporomandibular joints (TMJs) were evaluated. Qualitative and quantitative morphologic analyses were performed with tools available in PACS 11.0 (Carestream Health, Inc, Rochester, NY). The articular eminence inclination (AEI), eminence height (EH), CEA, and articular eminence morphologic shape were evaluated. Statistical analyses were used to evaluate any possible association of the variables with DD in the closed- and open-mouth positions, age, and gender. The significance level was set at.05. Results Elderly women (>60 yr) presented higher prevalence values (43.26%). There was no statistical correlation between DD and gender (P =.4290). Higher mean values of the AEI and EH were associated with box-shaped eminences. The EH, AEI, and CEA were not related to the presence or absence of DD and the different types of DD. The AEI (P =.002) and CEA (P <.001) values were higher for TMJs with disc reduction in the open-mouth position. Conclusion Disc position in the closed- and open-mouth positions is not influenced by articular eminence morphology; however, the AEI and CEA have an influence on disc reduction.

Original languageEnglish (US)
Pages (from-to)938.e1-938.e10
JournalJournal of Oral and Maxillofacial Surgery
Volume75
Issue number5
DOIs
StatePublished - May 1 2017
Externally publishedYes

ASJC Scopus subject areas

  • Surgery
  • Oral Surgery
  • Otorhinolaryngology

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