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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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Autores principales: Kim, Kyoung Yeon, Choi, Jin-Young, Oh, Song Hee, Moon, Hyung-Wook, Kim, Seong-Hun, Ahn, Hyo-Won, Kim, Kyung A, Nelson, Gerald
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7828563/
https://www.ncbi.nlm.nih.gov/pubmed/33451097
http://dx.doi.org/10.3390/s21020541
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author Kim, Kyoung Yeon
Choi, Jin-Young
Oh, Song Hee
Moon, Hyung-Wook
Kim, Seong-Hun
Ahn, Hyo-Won
Kim, Kyung A
Nelson, Gerald
author_facet Kim, Kyoung Yeon
Choi, Jin-Young
Oh, Song Hee
Moon, Hyung-Wook
Kim, Seong-Hun
Ahn, Hyo-Won
Kim, Kyung A
Nelson, Gerald
author_sort Kim, Kyoung Yeon
collection PubMed
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.
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spelling pubmed-78285632021-01-25 Computerized Assessment of Occlusion and Muscle Activity during Use of a Multilayer Clear Retainer: A Preliminary Study Kim, Kyoung Yeon Choi, Jin-Young Oh, Song Hee Moon, Hyung-Wook Kim, Seong-Hun Ahn, Hyo-Won Kim, Kyung A Nelson, Gerald Sensors (Basel) Article 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. MDPI 2021-01-13 /pmc/articles/PMC7828563/ /pubmed/33451097 http://dx.doi.org/10.3390/s21020541 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kim, Kyoung Yeon
Choi, Jin-Young
Oh, Song Hee
Moon, Hyung-Wook
Kim, Seong-Hun
Ahn, Hyo-Won
Kim, Kyung A
Nelson, Gerald
Computerized Assessment of Occlusion and Muscle Activity during Use of a Multilayer Clear Retainer: A Preliminary Study
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 Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7828563/
https://www.ncbi.nlm.nih.gov/pubmed/33451097
http://dx.doi.org/10.3390/s21020541
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