A Comparative Analysis of Temporomandibular Disorders Using a Jaw Motion Analyzer and Surface Electromyography
Introduction: Quantification of mandibular movement allows both dynamic and static evaluation of temporomandibular joint (TMJ) status, which would provide important information in temporomandibular disorders (TMD) diagnosis and treatment. The ultrasonic Jaw Motion Analyzer (JMA; zebris) system could...
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Elsevier
2025-06-01
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| Series: | International Dental Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0020653925001030 |
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| author | Rundong Zhang Danping Lai Feiyun Zhang Bo Qiao Jiayi Chen Yanzhen Zhang Ziyu Ge |
| author_facet | Rundong Zhang Danping Lai Feiyun Zhang Bo Qiao Jiayi Chen Yanzhen Zhang Ziyu Ge |
| author_sort | Rundong Zhang |
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| description | Introduction: Quantification of mandibular movement allows both dynamic and static evaluation of temporomandibular joint (TMJ) status, which would provide important information in temporomandibular disorders (TMD) diagnosis and treatment. The ultrasonic Jaw Motion Analyzer (JMA; zebris) system could analyse the 3-dimensional motion of the mandible without any radiation. Using the JMA, this study aimed to investigate the differences in mandibular movements and masticatory muscle activities among patients with different diagnoses of anterior disc displacement based on TMJ magnetic resonance imaging (MRI). Methods: Seventy-four adult subjects with 148 TMJ were divided into 3 groups based on MRI: the No Disc Displacement (NDD), the Anterior Disc Displacement with Reduction (ADDWR), and the Anterior Disc Displacement without Reduction (ADDWoR). The JMA and surface electromyography (sEMG) were used to measure several mandibular movements and sEMG. Comparison and correlation analysis were performed among groups. Results: Significant differences were found between NDD, ADDWR, and ADDWoR in the following items: the incisal range of motion during right and left laterotrusion, maximum mouth opening, the surface area of Posselt envelope movement in the frontal plane, condylar range of motion in opening movement, and sEMG of masseter during maximum voluntary clenching. Conclusion: Significant differences were found in mandibular movements and muscle activity between patients with NDD, ADDWR, and ADDWoR. Clinical Relevance: The JMA and sEMG provide important information on mandibular movement and muscle activities, which may provide additional insights into TMD diagnosis and treatment. |
| format | Article |
| id | doaj-art-3451037a94e6469fa3d1548bc9969fc2 |
| institution | Kabale University |
| issn | 0020-6539 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Dental Journal |
| spelling | doaj-art-3451037a94e6469fa3d1548bc9969fc22025-08-20T03:49:03ZengElsevierInternational Dental Journal0020-65392025-06-017531843185310.1016/j.identj.2025.03.023A Comparative Analysis of Temporomandibular Disorders Using a Jaw Motion Analyzer and Surface ElectromyographyRundong Zhang0Danping Lai1Feiyun Zhang2Bo Qiao3Jiayi Chen4Yanzhen Zhang5Ziyu Ge6Department of General Dentistry, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, ChinaDepartment of General Dentistry, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, ChinaDepartment of General Dentistry, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, ChinaDepartment of General Dentistry, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, ChinaDepartment of General Dentistry, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, ChinaCorresponding author. Department of General Dentistry, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China.; Department of General Dentistry, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, ChinaCorresponding author. Department of General Dentistry, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China.; Department of General Dentistry, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, ChinaIntroduction: Quantification of mandibular movement allows both dynamic and static evaluation of temporomandibular joint (TMJ) status, which would provide important information in temporomandibular disorders (TMD) diagnosis and treatment. The ultrasonic Jaw Motion Analyzer (JMA; zebris) system could analyse the 3-dimensional motion of the mandible without any radiation. Using the JMA, this study aimed to investigate the differences in mandibular movements and masticatory muscle activities among patients with different diagnoses of anterior disc displacement based on TMJ magnetic resonance imaging (MRI). Methods: Seventy-four adult subjects with 148 TMJ were divided into 3 groups based on MRI: the No Disc Displacement (NDD), the Anterior Disc Displacement with Reduction (ADDWR), and the Anterior Disc Displacement without Reduction (ADDWoR). The JMA and surface electromyography (sEMG) were used to measure several mandibular movements and sEMG. Comparison and correlation analysis were performed among groups. Results: Significant differences were found between NDD, ADDWR, and ADDWoR in the following items: the incisal range of motion during right and left laterotrusion, maximum mouth opening, the surface area of Posselt envelope movement in the frontal plane, condylar range of motion in opening movement, and sEMG of masseter during maximum voluntary clenching. Conclusion: Significant differences were found in mandibular movements and muscle activity between patients with NDD, ADDWR, and ADDWoR. Clinical Relevance: The JMA and sEMG provide important information on mandibular movement and muscle activities, which may provide additional insights into TMD diagnosis and treatment.http://www.sciencedirect.com/science/article/pii/S0020653925001030Temporomandibular disordersMandibular movementSurface electromyographyJaw Motion Analyser (JMA)Magnetic resonance imagingTrajectories |
| spellingShingle | Rundong Zhang Danping Lai Feiyun Zhang Bo Qiao Jiayi Chen Yanzhen Zhang Ziyu Ge A Comparative Analysis of Temporomandibular Disorders Using a Jaw Motion Analyzer and Surface Electromyography International Dental Journal Temporomandibular disorders Mandibular movement Surface electromyography Jaw Motion Analyser (JMA) Magnetic resonance imaging Trajectories |
| title | A Comparative Analysis of Temporomandibular Disorders Using a Jaw Motion Analyzer and Surface Electromyography |
| title_full | A Comparative Analysis of Temporomandibular Disorders Using a Jaw Motion Analyzer and Surface Electromyography |
| title_fullStr | A Comparative Analysis of Temporomandibular Disorders Using a Jaw Motion Analyzer and Surface Electromyography |
| title_full_unstemmed | A Comparative Analysis of Temporomandibular Disorders Using a Jaw Motion Analyzer and Surface Electromyography |
| title_short | A Comparative Analysis of Temporomandibular Disorders Using a Jaw Motion Analyzer and Surface Electromyography |
| title_sort | comparative analysis of temporomandibular disorders using a jaw motion analyzer and surface electromyography |
| topic | Temporomandibular disorders Mandibular movement Surface electromyography Jaw Motion Analyser (JMA) Magnetic resonance imaging Trajectories |
| url | http://www.sciencedirect.com/science/article/pii/S0020653925001030 |
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