ISSN: 2706-8870
Volume 8, Number 4 (2023)
Year Launched: 2016
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Correlation of head and trunk sways, and foot pressure distribution during chewing in the standing position

Volume 8, Issue 4, August 2023     |     PP. 279-296      |     PDF (393 K)    |     Pub. Date: August 22, 2023
DOI: 10.54647/cm321157    69 Downloads     4671 Views  

Author(s)

Kiwamu Sakaguchi, Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
Noshir R. Mehta, Craniofacial Pain Center, Department of Diagnostic Sciences, Tufts University School of Dental Medicine, Boston, MA, USA
Tomoaki Maruyama, Computer Science Course, Department of Industrial Engineering, National Institute of Technology (KOSEN), Ibaraki College, Ibaraki, Japan
Leopoldo P. Correa, Craniofacial Pain Center, Department of Diagnostic Sciences, Tufts University School of Dental Medicine, Boston, MA, USA
Atsuro Yokoyama, Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan

Abstract
Purpose: It has been reported that mastication affects the postural control system and enhances postural stability during upright standing. However, the mechanism has not been fully elucidated. The purpose of this study was to verify whether there are correlations among head and trunk sways, and foot pressure distribution during chewing in the standing position. Methods: A total of 32 healthy young male subjects were evaluated. The MatScanTM system was used to analyze changes in foot pressure distribution (center of foot pressure: COP) and the three-dimensional motion analysis system was used to analyze changes in head and trunk positions while subjects remained standing position with rest position, centric occlusion, and chewing. Data were analyzed using Spearman’s rank correlation coefficients. Results: There was a significant positive correlation between trunk sway value and COP areas in all three studied test conditions (correlation 0.75 to 0.95, P < 0.01). During mastication, significant positive correlations were also found between head and trunk sway values (correlation 0.70, P < 0.05) and between head sway value and COP areas (correlation 0.69 to 0.78, P < 0.01). Conclusions: There are significant positive correlations among head and trunk sways, and foot pressure distribution during chewing in the standing position.

Keywords
foot pressure distribution; head sway; mastication; standing position; trunk sway

Cite this paper
Kiwamu Sakaguchi, Noshir R. Mehta, Tomoaki Maruyama, Leopoldo P. Correa, Atsuro Yokoyama, Correlation of head and trunk sways, and foot pressure distribution during chewing in the standing position , SCIREA Journal of Clinical Medicine. Volume 8, Issue 4, August 2023 | PP. 279-296. 10.54647/cm321157

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