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  • Title: Adolescent TMJ tomography and magnetic resonance imaging: a comparative analysis.
    Author: Kamelchuk L, Nebbe B, Baker C, Major P.
    Journal: J Orofac Pain; 1997; 11(4):321-7. PubMed ID: 9656908.
    Abstract:
    The predictive value of radiographic tomography was assessed using magnetic resonance imaging as a definitive test of TMJ soft-tissue status in a predominantly asymptomatic adolescent sample. Eighty-two TMJs in 41 subjects (mean age = 12.5 years, range = 10 to 17 years) were independently evaluated using axially corrected tomography and magnetic resonance imaging. Tests of comparison and correlation were performed. Correspondence of tomographic classification to magnetic resonance imaging classification of nondisplacement (55%), reducing internal derangement (35%), or nonreducing internal derangement (10%) showed a significant relationship (P < .05). Tomography as a diagnostic test of abnormal disc position had a sensitivity of 0.43, a specificity of 0.80, a positive predictive value of 0.64, and a negative predictive value of 0.63. Tomography is inappropriate as a diagnostic test for TMJ internal derangement.
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