Relationship between jaw opening force and hyoid bone dynamics in healthy elderly subjects

Hiromichi Shinozaki, Haruka Tohara, Mariko Matsubara, Nobuhiro Inokuchi, Yasuhiro Yamazaki, Ayako Nakane, Yoko Wakasugi, Shunsuke Minakuchi Department of Gerodontology, Tokyo Medical and Dental University, Tokyo, Japan Purpose: This study aimed to examine the relationship between jaw opening force...

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Autores principales:	Shinozaki H, Tohara H, Matsubara M, Inokuchi N, Yamazaki Y, Nakane A, Wakasugi Y, Minakuchi S
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2017
Materias:	aging deglutition disorders dysphasia gender differences Geriatrics RC952-954.6
Acceso en línea:	https://doaj.org/article/724e0ad43c0c4caf8ca25ad5b6fd1804
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spelling	oai:doaj.org-article:724e0ad43c0c4caf8ca25ad5b6fd18042021-12-02T02:21:45ZRelationship between jaw opening force and hyoid bone dynamics in healthy elderly subjects1178-1998https://doaj.org/article/724e0ad43c0c4caf8ca25ad5b6fd18042017-04-01T00:00:00Zhttps://www.dovepress.com/relationship-between-jaw-opening-force-and-hyoid-bone-dynamics-in-heal-peer-reviewed-article-CIAhttps://doaj.org/toc/1178-1998Hiromichi Shinozaki, Haruka Tohara, Mariko Matsubara, Nobuhiro Inokuchi, Yasuhiro Yamazaki, Ayako Nakane, Yoko Wakasugi, Shunsuke Minakuchi Department of Gerodontology, Tokyo Medical and Dental University, Tokyo, Japan Purpose: This study aimed to examine the relationship between jaw opening force and hyoid bone dynamics and resting position in elderly individuals based on gender. Subjects and methods: Subjects were 36 healthy elderly individuals aged ≥65 years without dysphagia (16 men and 20 women; mean age 75.5 years, range 65–88 years). Videofluorographic images during the swallowing of 10 mL of 40% (w/v) barium sulfate were obtained and the degrees of anterior, superior, and hypotenuse displacements of the hyoid bone and maximum/resting hyoid position were evaluated. Jaw opening force was measured three times using a jaw opening force sthenometer; the mean of these three measurements was used for analysis. Results: In men, there was a positive correlation between jaw opening force and resting hyoid position and negative correlations among all the degrees of anterior, superior, and hypotenuse displacements of the hyoid bone. In women, there was no statistically significant correlation between jaw opening force and any of the measurement items. There was no statistically significant correlation between jaw opening force and maximum hyoid position in either men or women. Conclusion: Our findings suggest that low jaw opening force leads to low resting hyoid position only in elderly men, and a lower hyoid position in healthy elderly men results in a larger total amount of hyoid displacement during swallowing. Moreover, a maximum hyoid position in healthy individuals of either gender does not differ depending on their jaw opening force. Keywords: aging, deglutition disorders, dysphasia, gender differencesShinozaki HTohara HMatsubara MInokuchi NYamazaki YNakane AWakasugi YMinakuchi SDove Medical Pressarticleagingdeglutition disordersdysphasiagender differencesGeriatricsRC952-954.6ENClinical Interventions in Aging, Vol Volume 12, Pp 629-634 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	aging deglutition disorders dysphasia gender differences Geriatrics RC952-954.6
spellingShingle	aging deglutition disorders dysphasia gender differences Geriatrics RC952-954.6 Shinozaki H Tohara H Matsubara M Inokuchi N Yamazaki Y Nakane A Wakasugi Y Minakuchi S Relationship between jaw opening force and hyoid bone dynamics in healthy elderly subjects
description	Hiromichi Shinozaki, Haruka Tohara, Mariko Matsubara, Nobuhiro Inokuchi, Yasuhiro Yamazaki, Ayako Nakane, Yoko Wakasugi, Shunsuke Minakuchi Department of Gerodontology, Tokyo Medical and Dental University, Tokyo, Japan Purpose: This study aimed to examine the relationship between jaw opening force and hyoid bone dynamics and resting position in elderly individuals based on gender. Subjects and methods: Subjects were 36 healthy elderly individuals aged ≥65 years without dysphagia (16 men and 20 women; mean age 75.5 years, range 65–88 years). Videofluorographic images during the swallowing of 10 mL of 40% (w/v) barium sulfate were obtained and the degrees of anterior, superior, and hypotenuse displacements of the hyoid bone and maximum/resting hyoid position were evaluated. Jaw opening force was measured three times using a jaw opening force sthenometer; the mean of these three measurements was used for analysis. Results: In men, there was a positive correlation between jaw opening force and resting hyoid position and negative correlations among all the degrees of anterior, superior, and hypotenuse displacements of the hyoid bone. In women, there was no statistically significant correlation between jaw opening force and any of the measurement items. There was no statistically significant correlation between jaw opening force and maximum hyoid position in either men or women. Conclusion: Our findings suggest that low jaw opening force leads to low resting hyoid position only in elderly men, and a lower hyoid position in healthy elderly men results in a larger total amount of hyoid displacement during swallowing. Moreover, a maximum hyoid position in healthy individuals of either gender does not differ depending on their jaw opening force. Keywords: aging, deglutition disorders, dysphasia, gender differences
format	article
author	Shinozaki H Tohara H Matsubara M Inokuchi N Yamazaki Y Nakane A Wakasugi Y Minakuchi S
author_facet	Shinozaki H Tohara H Matsubara M Inokuchi N Yamazaki Y Nakane A Wakasugi Y Minakuchi S
author_sort	Shinozaki H
title	Relationship between jaw opening force and hyoid bone dynamics in healthy elderly subjects
title_short	Relationship between jaw opening force and hyoid bone dynamics in healthy elderly subjects
title_full	Relationship between jaw opening force and hyoid bone dynamics in healthy elderly subjects
title_fullStr	Relationship between jaw opening force and hyoid bone dynamics in healthy elderly subjects
title_full_unstemmed	Relationship between jaw opening force and hyoid bone dynamics in healthy elderly subjects
title_sort	relationship between jaw opening force and hyoid bone dynamics in healthy elderly subjects
publisher	Dove Medical Press
publishDate	2017
url	https://doaj.org/article/724e0ad43c0c4caf8ca25ad5b6fd1804
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Relationship between jaw opening force and hyoid bone dynamics in healthy elderly subjects

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