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  • Title: Magnetic resonance imaging diagnosis of the temporomandibular joint in patients with orthodontic appliances.
    Author: Okano Y, Yamashiro M, Kaneda T, Kasai K.
    Journal: Oral Surg Oral Med Oral Pathol Oral Radiol Endod; 2003 Feb; 95(2):255-63. PubMed ID: 12582369.
    Abstract:
    OBJECTIVE: The purpose of this study was to investigate the accuracy of magnetic resonance imaging diagnosis of the temporomandibular joint in those with orthodontic appliances by comparing magnetic resonance images of the temporomandibular joints with and without orthodontic appliances. STUDY DESIGN: Magnetic resonance imaging was performed in a total of 20 temporomandibular joints before and after the insertion of 6 kinds of orthodontic appliances (types 1-6), and the magnetic resonance images were compared. RESULTS: With respect to disk position, the diagnostic accuracy was 80%, 75%, 70%, 70%, 65%, and 60% in order from type 1 through type 6. The distribution of stages for the assessment of condylar configurations was 80%, 55%, 40%, 40%, 20%, and 10% in order from type 1 through type 6. No significant changes were found in the condylar head marrow signals. CONCLUSION: Magnetic resonance imaging is performed in orthodontic patients preferably by using ceramic brackets in the front teeth and direct bonding tubes in the molar teeth while removing arch wires.
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