Simultaneous Measurement of Ear Canal Movement, Electromyography of the Masseter Muscle and Occlusal Force for Earphone-Type Occlusal Force Estimation Device Development

Sensors
Mami KurosawaAtsushi Nishikawa

Abstract

We intend to develop earphone-type wearable devices to measure occlusal force by measuring ear canal movement using an ear sensor that we developed. The proposed device can measure occlusal force during eating. In this work, we simultaneously measured the ear canal movement (ear sensor value), the surface electromyography (EMG) of the masseter muscle and the occlusal force six times from five subjects as a basic study toward occlusal force meter development. Using the results, we investigated the correlation coefficient between the ear sensor value and the occlusal force, and the partial correlation coefficient between ear sensor values. Additionally, we investigated the average of the partial correlation coefficient and the absolute value of the average for each subject. The absolute value results indicated strong correlation, with correlation coefficients exceeding 0.9514 for all subjects. The subjects showed a lowest partial correlation coefficient of 0.6161 and a highest value of 0.8286. This was also indicative of correlation. We then estimated the occlusal force via a single regression analysis for each subject. Evaluation of the proposed method via the cross-validation method indicated that the root-mean-square error whe...Continue Reading

References

Apr 1, 1992·The Surgical Clinics of North America·J C EagonK A Kelly
Jun 1, 1993·Scandinavian Journal of Dental Research·A Waltimo, M Könönen
Jan 25, 2003·Dental Materials : Official Publication of the Academy of Dental Materials·Cláudio P FernandesAnders Bergmark
Jul 9, 2004·Journal of Dentistry·Virgilio F FerrarioGianluca M Tartaglia
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Aug 12, 2016·Sensors·Jarred Fastier-WoollerDzung Viet Dao
May 26, 2018·Journal of Healthcare Engineering·Kazuhiro TaniguchiAtsushi Nishikawa
Jan 18, 2019·Journal of Healthcare Engineering·Kazuhiro Taniguchi, Atsushi Nishikawa

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Citations

Apr 27, 2021·Frontiers in Bioengineering and Biotechnology·Yingzhi GuXianju Xie

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Methods Mentioned

BETA
force measurement
irradiates

Software Mentioned

Windows
CoolTermWin
OMEGA

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