| Temporomandibular joint and 3.0 T pseudodynamic magnetic resonance imaging. Part 2: evaluation of articular disc obscurity. | |
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MedLine Citation:
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PMID: 21062942 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: This study examined the relationship between temporomandibular joint (TMJ) dysfunctions and obscurity grades of interpreted anterior and posterior borders of the articular disc (Da and Dp, respectively) by 3.0 T pseudodynamic MRI. METHODS: Da and Dp were classified into seven obscurity grades, and the Dp contour was classified into three types. The grades, types and TMJ function were compared by 3.0 T pseudodynamic MRI. RESULTS: Unobscured Da images at condylar positions posterior to the articular eminence were associated with normal TMJ function (P = 0.046 < 0.05). Unobscured Dp images at condylar positions anterior to the articular eminence were associated with normal TMJ function (P = 0.033 < 0.05). In addition, unobscured Dp images following flap insertion were associated with normal TMJ function (P = 0.043 < 0.05). There was no statistical relationship between Dp contour types and TMJ movement, but any change observed in the Dp contour during mouth opening was associated with abnormal TMJ function (P = 0.040 < 0.05). CONCLUSIONS: Grading of Da and Dp obscurity based on how well the areas were defined in the images, identifying the condylar positions in relation to the glenoid fossa and articular eminences, and observing the changes in Dp contour types were useful for diagnosing TMJ abnormalities. |
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Authors:
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H Iwasaki; H Kubo; M Harada; H Nishitani; Y Ohashi |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Dento maxillo facial radiology Volume: 39 ISSN: 0250-832X ISO Abbreviation: Dentomaxillofac Radiol Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-11-10 Completed Date: 2011-01-10 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7609576 Medline TA: Dentomaxillofac Radiol Country: England |
Other Details:
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Languages: eng Pagination: 486-93 Citation Subset: D |
Affiliation:
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Department of Oral and Maxillofacial Radiology, Institute of Health Bioscience (IHBS), The University of Tokushima Graduate School, 18-15 Kuramoto-3-Chome, Tokushima 770-8504, Japan. iwasaki@dent.tokushima-u.as.jp |
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Case-Control Studies Chi-Square Distribution Female Humans Ligaments, Articular / pathology Magnetic Resonance Imaging / methods* Male Mandibular Condyle / pathology* Range of Motion, Articular Statistics, Nonparametric Temporomandibular Joint Disk / pathology* Temporomandibular Joint Disorders / pathology*, physiopathology Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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