| Diagnostic value of 4 criteria to interpret temporomandibular joint normal disk position on magnetic resonance images. | |
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MedLine Citation:
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PMID: 9798238 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: This study was undertaken to evaluate different criteria to establish normal disk position on magnetic resonance images. STUDY DESIGN: Magnetic resonance image findings of 137 consecutive patients with temporomandibular disorders and 23 asymptomatic volunteers were used in this study. Three calibrated observers interpreted the images individually. Four closed-mouth and 1 open-mouth criteria were tested for their ability to define normal and abnormal temporomandibular joint disk positions on magnetic resonance images. RESULTS: For the 46 joints in the asymptomatic volunteers, the criterion that yielded the highest percentage of normal disk position diagnoses was the disk's intermediate zone (93.5%). Clock face criteria produced the following declining percentages of normal disk position diagnoses: 10 o'clock, 82.6%; 11 o'clock, 63.0%; and 12 o'clock, 39.1%. Similar results were obtained for the patients with temporomandibular disorders. In both groups, as the number of normal disk position diagnoses declined, the percentage of joints with a diagnosis of disk displacement with reduction increased. Conversely, the percentage of joints with a diagnosis of disk displacement without reduction (in the group of patients with temporomandibular disorders) did not appear to be substantially affected by the 4 closed-mouth disk position criteria. CONCLUSIONS: These results suggest that the intermediate zone criterion for disk displacement is the more stringent criterion and the one that would yield the lowest number of false positives when the disk position is being judged in the closed-mouth sagittal view. |
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Authors:
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M G Orsini; T Kuboki; S Terada; Y Matsuka; A Yamashita; G T Clark |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics Volume: 86 ISSN: 1079-2104 ISO Abbreviation: Oral Surg Oral Med Oral Pathol Oral Radiol Endod Publication Date: 1998 Oct |
Date Detail:
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Created Date: 1998-12-30 Completed Date: 1998-12-30 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 9508562 Medline TA: Oral Surg Oral Med Oral Pathol Oral Radiol Endod Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 489-97 Citation Subset: D; IM |
Affiliation:
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Department of Fixed Prosthodontics, Okayama University Dental School, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Chi-Square Distribution Dislocations / pathology* Female Humans Magnetic Resonance Imaging Male Observer Variation Predictive Value of Tests Reproducibility of Results Single-Blind Method Temporomandibular Joint Disk / anatomy & histology*, pathology* Temporomandibular Joint Disorders / pathology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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