Retrospective magnetic resonance imaging study of risk factors associated with sideways disk displacement of the temporomandibular joint
As part of our ongoing investigation of risk and predictive factors associated with temporomandibular disorders, we used magnetic resonance imaging (MRI) to identify risk factors for sideways disk displacement of the temporomandibular joint in 26 patients with MRI-confirmed unilateral pure sideways...
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Veröffentlicht in: | Journal of Oral Science 2016, Vol.58(1), pp.29-34 |
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creator | Kohinata, Kiyomi Matsumoto, Kunihito Suzuki, Toshihiro Tsunoda, Mari Hayashi, Yusuke Araki, Masao Hashimoto, Koji Honda, Kazuya |
description | As part of our ongoing investigation of risk and predictive factors associated with temporomandibular disorders, we used magnetic resonance imaging (MRI) to identify risk factors for sideways disk displacement of the temporomandibular joint in 26 patients with MRI-confirmed unilateral pure sideways disk displacement (medial or lateral disk displacement) and normal positioning of the contralateral temporomandibular joint. Coronal morphologic harmonization between the condyle and fossa, angle between the axis of the ramus and condyle, and angle between the lateral pterygoid muscle (LPM) and condyle were evaluated. Only angle of the LPM related to the condyle was significantly correlated with mediolateral disk position; the angles of joints with medial, normal, and lateral disk positions were 70.2°, 66.7°, and 60.1°, respectively. These results suggest that a greater angle of the inferior head of the LPM to the axis of the condyle on axial MRI images may cause medial disk displacement, while a smaller angle may result in lateral disk displacement. (J Oral Sci 58, 29-34, 2016) |
doi_str_mv | 10.2334/josnusd.58.29 |
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Coronal morphologic harmonization between the condyle and fossa, angle between the axis of the ramus and condyle, and angle between the lateral pterygoid muscle (LPM) and condyle were evaluated. Only angle of the LPM related to the condyle was significantly correlated with mediolateral disk position; the angles of joints with medial, normal, and lateral disk positions were 70.2°, 66.7°, and 60.1°, respectively. These results suggest that a greater angle of the inferior head of the LPM to the axis of the condyle on axial MRI images may cause medial disk displacement, while a smaller angle may result in lateral disk displacement. 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Coronal morphologic harmonization between the condyle and fossa, angle between the axis of the ramus and condyle, and angle between the lateral pterygoid muscle (LPM) and condyle were evaluated. Only angle of the LPM related to the condyle was significantly correlated with mediolateral disk position; the angles of joints with medial, normal, and lateral disk positions were 70.2°, 66.7°, and 60.1°, respectively. These results suggest that a greater angle of the inferior head of the LPM to the axis of the condyle on axial MRI images may cause medial disk displacement, while a smaller angle may result in lateral disk displacement. (J Oral Sci 58, 29-34, 2016)</description><subject>Adult</subject><subject>Dentistry</subject><subject>Female</subject><subject>Humans</subject><subject>internal derangement</subject><subject>Magnetic Resonance Imaging - methods</subject><subject>Male</subject><subject>MRI</subject><subject>Retrospective Studies</subject><subject>Risk Factors</subject><subject>sideways disk displacement</subject><subject>temporomandibular joint</subject><subject>Temporomandibular Joint - diagnostic imaging</subject><subject>Temporomandibular Joint - pathology</subject><issn>1343-4934</issn><issn>1880-4926</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpNkE2P0zAQhi0EYj_gyBX5yCXFH0kc30Cr5UNaCQnBOXLsSeuS2MHj7Kr_gJ-Nq5aKy8xo5pn38BDyhrONkLJ-v48YVnSbptsI_Yxc865jVa1F-7zMspZllvUVuUHcM1aLVjUvyZVQTPBGqmvy5zvkFHEBm_0j0NlsA2RvaQKMwQQL1JedD1uKeXUHGkeaPP6io7E5JqQGMVpvMjj65POOonfwZA5I3ZEqZZmMhRlCPr7mHdAM8xJTnE1wflgnk-g--pBfkRejmRBen_st-fnp_sfdl-rh2-evdx8fKlsrnSteW93ozgqhBqah484x0dmBw9g4WfNWD0or2dWsEUqODrTjgwQYBgedaq28Je9OuUuKv1fA3M8eLUyTCRBX7LlSiqm20ayg1Qm1xRAmGPslFRvp0HPWH-X3Z_l90_VCF_7tOXodZnAX-p_tAnw4AXvMZgsXwKSifIL_4_gp83KyO5N6CPIvbSWd-g</recordid><startdate>2016</startdate><enddate>2016</enddate><creator>Kohinata, Kiyomi</creator><creator>Matsumoto, Kunihito</creator><creator>Suzuki, Toshihiro</creator><creator>Tsunoda, Mari</creator><creator>Hayashi, Yusuke</creator><creator>Araki, Masao</creator><creator>Hashimoto, Koji</creator><creator>Honda, Kazuya</creator><general>Nihon University School of Dentistry</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>2016</creationdate><title>Retrospective magnetic resonance imaging study of risk factors associated with sideways disk displacement of the temporomandibular joint</title><author>Kohinata, Kiyomi ; Matsumoto, Kunihito ; Suzuki, Toshihiro ; Tsunoda, Mari ; Hayashi, Yusuke ; Araki, Masao ; Hashimoto, Koji ; Honda, Kazuya</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c479t-14c9598c227b09e81dd028cb1ef5d34169b79738405273fde9d1b3eebbde876c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Adult</topic><topic>Dentistry</topic><topic>Female</topic><topic>Humans</topic><topic>internal derangement</topic><topic>Magnetic Resonance Imaging - methods</topic><topic>Male</topic><topic>MRI</topic><topic>Retrospective Studies</topic><topic>Risk Factors</topic><topic>sideways disk displacement</topic><topic>temporomandibular joint</topic><topic>Temporomandibular Joint - diagnostic imaging</topic><topic>Temporomandibular Joint - pathology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kohinata, Kiyomi</creatorcontrib><creatorcontrib>Matsumoto, Kunihito</creatorcontrib><creatorcontrib>Suzuki, Toshihiro</creatorcontrib><creatorcontrib>Tsunoda, Mari</creatorcontrib><creatorcontrib>Hayashi, Yusuke</creatorcontrib><creatorcontrib>Araki, Masao</creatorcontrib><creatorcontrib>Hashimoto, Koji</creatorcontrib><creatorcontrib>Honda, Kazuya</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of Oral Science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kohinata, Kiyomi</au><au>Matsumoto, Kunihito</au><au>Suzuki, Toshihiro</au><au>Tsunoda, Mari</au><au>Hayashi, Yusuke</au><au>Araki, Masao</au><au>Hashimoto, Koji</au><au>Honda, Kazuya</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Retrospective magnetic resonance imaging study of risk factors associated with sideways disk displacement of the temporomandibular joint</atitle><jtitle>Journal of Oral Science</jtitle><addtitle>J Oral Sci</addtitle><date>2016</date><risdate>2016</risdate><volume>58</volume><issue>1</issue><spage>29</spage><epage>34</epage><pages>29-34</pages><issn>1343-4934</issn><eissn>1880-4926</eissn><abstract>As part of our ongoing investigation of risk and predictive factors associated with temporomandibular disorders, we used magnetic resonance imaging (MRI) to identify risk factors for sideways disk displacement of the temporomandibular joint in 26 patients with MRI-confirmed unilateral pure sideways disk displacement (medial or lateral disk displacement) and normal positioning of the contralateral temporomandibular joint. Coronal morphologic harmonization between the condyle and fossa, angle between the axis of the ramus and condyle, and angle between the lateral pterygoid muscle (LPM) and condyle were evaluated. Only angle of the LPM related to the condyle was significantly correlated with mediolateral disk position; the angles of joints with medial, normal, and lateral disk positions were 70.2°, 66.7°, and 60.1°, respectively. These results suggest that a greater angle of the inferior head of the LPM to the axis of the condyle on axial MRI images may cause medial disk displacement, while a smaller angle may result in lateral disk displacement. (J Oral Sci 58, 29-34, 2016)</abstract><cop>Japan</cop><pub>Nihon University School of Dentistry</pub><pmid>27021537</pmid><doi>10.2334/josnusd.58.29</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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source | J-STAGE Free; MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Freely Accessible Japanese Titles |
subjects | Adult Dentistry Female Humans internal derangement Magnetic Resonance Imaging - methods Male MRI Retrospective Studies Risk Factors sideways disk displacement temporomandibular joint Temporomandibular Joint - diagnostic imaging Temporomandibular Joint - pathology |
title | Retrospective magnetic resonance imaging study of risk factors associated with sideways disk displacement of the temporomandibular joint |
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