Computerized Assessment of Occlusion and Muscle Activity during Use of a Multilayer Clear Retainer: A Preliminary Study
The aim of this preliminary study was to evaluate the short-term changes of occlusal contacts and muscle activity after orthodontic treatment during the use of a multi-layer clear retainer. Evaluation was done with the T-scan and BioEMG systems. A total of 18 subjects were included, who were evaluat...
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| Format: | Article |
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MDPI AG
2021-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/2/541 |
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| author | Kyoung Yeon Kim Jin-Young Choi Song Hee Oh Hyung-Wook Moon Seong-Hun Kim Hyo-Won Ahn Kyung A Kim Gerald Nelson |
| author_facet | Kyoung Yeon Kim Jin-Young Choi Song Hee Oh Hyung-Wook Moon Seong-Hun Kim Hyo-Won Ahn Kyung A Kim Gerald Nelson |
| author_sort | Kyoung Yeon Kim |
| collection | DOAJ |
| description | The aim of this preliminary study was to evaluate the short-term changes of occlusal contacts and muscle activity after orthodontic treatment during the use of a multi-layer clear retainer. Evaluation was done with the T-scan and BioEMG systems. A total of 18 subjects were included, who were evaluated at three time intervals—T0 at debonding, T1 at one month after retainer delivery, and T2 at four months after retainer delivery. The T-scan and electromyography (EMG) data were recorded simultaneously. The T-scan system recorded the occlusion time, disclusion time and force distribution. The EMG waves were quantified by calculating the asymmetry index and activity index. The time variables changed but not significantly. Occlusal force decreased in the anterior dentition and increased in the posterior dentition during T0–T2. There was no clear evidence of a relationship between unbalanced occlusal forces and muscle activity. In most subjects, the temporalis anterior muscle was more dominant than the masseter muscle. From this preliminary computerized study, there were no significant changes in the state of the occlusion or muscle activity during the short-term retention period. |
| first_indexed | 2024-03-09T04:52:45Z |
| format | Article |
| id | doaj.art-3cd4f34d969243bf9a618ed8ab34acff |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T04:52:45Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-3cd4f34d969243bf9a618ed8ab34acff2023-12-03T13:08:17ZengMDPI AGSensors1424-82202021-01-0121254110.3390/s21020541Computerized Assessment of Occlusion and Muscle Activity during Use of a Multilayer Clear Retainer: A Preliminary StudyKyoung Yeon Kim0Jin-Young Choi1Song Hee Oh2Hyung-Wook Moon3Seong-Hun Kim4Hyo-Won Ahn5Kyung A Kim6Gerald Nelson7Department of Orthodontics, Graduate School, Kyung Hee University, Seoul 02447, KoreaDepartment of Orthodontics, Graduate School, Kyung Hee University, Seoul 02447, KoreaDepartment of Oral and Maxillofacial Radiology, Graduate School, Kyung Hee University, Seoul 02447, KoreaDepartment of Orthodontics, Graduate School, Kyung Hee University, Seoul 02447, KoreaDepartment of Orthodontics, Graduate School, Kyung Hee University, Seoul 02447, KoreaDepartment of Orthodontics, Graduate School, Kyung Hee University, Seoul 02447, KoreaDepartment of Orthodontics, Graduate School, Kyung Hee University, Seoul 02447, KoreaDivision of Orthodontics, Department of Orofacial Science, University of California San Francisco, San Francisco, CA 94143, USAThe aim of this preliminary study was to evaluate the short-term changes of occlusal contacts and muscle activity after orthodontic treatment during the use of a multi-layer clear retainer. Evaluation was done with the T-scan and BioEMG systems. A total of 18 subjects were included, who were evaluated at three time intervals—T0 at debonding, T1 at one month after retainer delivery, and T2 at four months after retainer delivery. The T-scan and electromyography (EMG) data were recorded simultaneously. The T-scan system recorded the occlusion time, disclusion time and force distribution. The EMG waves were quantified by calculating the asymmetry index and activity index. The time variables changed but not significantly. Occlusal force decreased in the anterior dentition and increased in the posterior dentition during T0–T2. There was no clear evidence of a relationship between unbalanced occlusal forces and muscle activity. In most subjects, the temporalis anterior muscle was more dominant than the masseter muscle. From this preliminary computerized study, there were no significant changes in the state of the occlusion or muscle activity during the short-term retention period.https://www.mdpi.com/1424-8220/21/2/541occlusionorthodontic retainerT-scanelectromyographymuscle activity |
| spellingShingle | Kyoung Yeon Kim Jin-Young Choi Song Hee Oh Hyung-Wook Moon Seong-Hun Kim Hyo-Won Ahn Kyung A Kim Gerald Nelson Computerized Assessment of Occlusion and Muscle Activity during Use of a Multilayer Clear Retainer: A Preliminary Study Sensors occlusion orthodontic retainer T-scan electromyography muscle activity |
| title | Computerized Assessment of Occlusion and Muscle Activity during Use of a Multilayer Clear Retainer: A Preliminary Study |
| title_full | Computerized Assessment of Occlusion and Muscle Activity during Use of a Multilayer Clear Retainer: A Preliminary Study |
| title_fullStr | Computerized Assessment of Occlusion and Muscle Activity during Use of a Multilayer Clear Retainer: A Preliminary Study |
| title_full_unstemmed | Computerized Assessment of Occlusion and Muscle Activity during Use of a Multilayer Clear Retainer: A Preliminary Study |
| title_short | Computerized Assessment of Occlusion and Muscle Activity during Use of a Multilayer Clear Retainer: A Preliminary Study |
| title_sort | computerized assessment of occlusion and muscle activity during use of a multilayer clear retainer a preliminary study |
| topic | occlusion orthodontic retainer T-scan electromyography muscle activity |
| url | https://www.mdpi.com/1424-8220/21/2/541 |
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