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A New Intraoral Six-Degrees-of-Freedom Jaw Movement Tracking Method Using Magnetic Fingerprints

We proposed a novel jaw movement tracking method that can measure in six degrees of freedom. The magnetic field generated by a permanent magnet paired with a small, low-power-consumption Hall effect magnetic sensor is used to estimate the relative distance between two objects—in this instance, the l...

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Autores principales: Morikawa, Kinta, Isogai, Ryosuke, Nonaka, Junya, Yoshida, Yoshifumi, Haga, Shugo, Maki, Koutaro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9693492/
https://www.ncbi.nlm.nih.gov/pubmed/36433520
http://dx.doi.org/10.3390/s22228923
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author Morikawa, Kinta
Isogai, Ryosuke
Nonaka, Junya
Yoshida, Yoshifumi
Haga, Shugo
Maki, Koutaro
author_facet Morikawa, Kinta
Isogai, Ryosuke
Nonaka, Junya
Yoshida, Yoshifumi
Haga, Shugo
Maki, Koutaro
author_sort Morikawa, Kinta
collection PubMed
description We proposed a novel jaw movement tracking method that can measure in six degrees of freedom. The magnetic field generated by a permanent magnet paired with a small, low-power-consumption Hall effect magnetic sensor is used to estimate the relative distance between two objects—in this instance, the lower and upper jaws. By installing a microelectromechanical system (MEMS) orientation sensor in the device, we developed a mouthpiece-type sensing device that can measure voluntary mandibular movements in three-dimensional orientation and position. An evaluation of individuals wearing this device demonstrated its ability to measure mandibular movement with an accuracy of approximately 3 mm. Using the movement recording feature with six degrees of freedom also enabled the evaluation of an individual’s jaw movements over time in three dimensions. In this method, all sensors are built onto the mouthpiece and the sensing is completed in the oral cavity. It does not require the fixation of a large-scale device to the head or of a jig to the teeth, unlike existing mandibular movement tracking devices. These novel features are expected to increase the accessibility of routine measurements of natural jaw movement, unrestricted by an individual’s physiological movement and posture.
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spelling pubmed-96934922022-11-26 A New Intraoral Six-Degrees-of-Freedom Jaw Movement Tracking Method Using Magnetic Fingerprints Morikawa, Kinta Isogai, Ryosuke Nonaka, Junya Yoshida, Yoshifumi Haga, Shugo Maki, Koutaro Sensors (Basel) Article We proposed a novel jaw movement tracking method that can measure in six degrees of freedom. The magnetic field generated by a permanent magnet paired with a small, low-power-consumption Hall effect magnetic sensor is used to estimate the relative distance between two objects—in this instance, the lower and upper jaws. By installing a microelectromechanical system (MEMS) orientation sensor in the device, we developed a mouthpiece-type sensing device that can measure voluntary mandibular movements in three-dimensional orientation and position. An evaluation of individuals wearing this device demonstrated its ability to measure mandibular movement with an accuracy of approximately 3 mm. Using the movement recording feature with six degrees of freedom also enabled the evaluation of an individual’s jaw movements over time in three dimensions. In this method, all sensors are built onto the mouthpiece and the sensing is completed in the oral cavity. It does not require the fixation of a large-scale device to the head or of a jig to the teeth, unlike existing mandibular movement tracking devices. These novel features are expected to increase the accessibility of routine measurements of natural jaw movement, unrestricted by an individual’s physiological movement and posture. MDPI 2022-11-18 /pmc/articles/PMC9693492/ /pubmed/36433520 http://dx.doi.org/10.3390/s22228923 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Morikawa, Kinta
Isogai, Ryosuke
Nonaka, Junya
Yoshida, Yoshifumi
Haga, Shugo
Maki, Koutaro
A New Intraoral Six-Degrees-of-Freedom Jaw Movement Tracking Method Using Magnetic Fingerprints
title A New Intraoral Six-Degrees-of-Freedom Jaw Movement Tracking Method Using Magnetic Fingerprints
title_full A New Intraoral Six-Degrees-of-Freedom Jaw Movement Tracking Method Using Magnetic Fingerprints
title_fullStr A New Intraoral Six-Degrees-of-Freedom Jaw Movement Tracking Method Using Magnetic Fingerprints
title_full_unstemmed A New Intraoral Six-Degrees-of-Freedom Jaw Movement Tracking Method Using Magnetic Fingerprints
title_short A New Intraoral Six-Degrees-of-Freedom Jaw Movement Tracking Method Using Magnetic Fingerprints
title_sort new intraoral six-degrees-of-freedom jaw movement tracking method using magnetic fingerprints
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9693492/
https://www.ncbi.nlm.nih.gov/pubmed/36433520
http://dx.doi.org/10.3390/s22228923
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