title: Diagnostic accuracy of TMJ vibration analysis for internal derangement and/or degenerative joint disease.
abstract: Lower joint arthrography and videofluoroscopy were used to diagnose 297 joints from temporomandibular disorders (TMD) patients. The surface vibrations of the temporomandibular joints (TMJs) were recorded by electrovibratography and a parameter set was derived through frequency analysis. Total vibration energies were used as the primary separating threshold for abnormal joints. The following conditions were statistically discriminated by multi-variate analyses: I) meniscal displacement with reduction; II) meniscal displacement with a partial disk reduction; III) meniscal displacement without reduction; and IV) degenerative joint disease and/or perforation of the disk. Using the total vibration energy as a threshold, the diagnostic sensitivity for the abnormal joints was 82%, while the diagnostic specificity for the joints with no evidence of internal derangement was 75%. Discriminant analysis for the above-mentioned four conditions revealed a diagnostic sensitivity of 79.0%, 85.7%, 77.1% and 76.3% for conditions I, II, III and IV, respectively. The diagnostic specificity was 76.2%, 79.9%, 59.0% and 77.9% for conditions I, II, III and IV, respectively. It was concluded that vibration analysis of the TMJ could be clinically useful as a screening examination for TMD patients.
authors: Department of Fixed Prosthodontics, Osaka University, Japan.
authors: S
authors: S
authors: Ishigaki
authors: R W
authors: RW
authors: Bessette
authors: T
authors: T
authors: Maruyama
mesh_terms: D016002:Discriminant Analysis; D005069:Evaluation Studies as Topic; D006801:Humans; D004204:Joint Dislocations / Q000175:diagnosis*; D015999:Multivariate Analysis; D010003:Osteoarthritis / Q000175:diagnosis; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013705:Temporomandibular Joint Disorders / Q000175:diagnosis*; D014732:Vibration