Capacitive-Type Pressure-Mapping Sensor for Measuring Bite Force

Bite force is an important indicator of masticatory performance. However, existing methods for measuring bite force are either ineffective or expensive. Hence, we developed a novel capacitive-type pressure-mapping sensor that converts mechanical forces into changes in capacitance and calculates bite...

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Bibliographic Details
Published in:International journal of environmental research and public health 2022-01, Vol.19 (3), p.1273
Main Authors: Iwasaki, Masanori, Maeda, Ichinosuke, Kokubo, Yota, Tanaka, Yoshitomo, Ueno, Tetsuji, Takahashi, Wataru, Watanabe, Yutaka, Hirano, Hirohiko
Format: Article
Language:English
Subjects:
Accuracy
Bite Force
Biting
Capacitance
Compression
Compression tests
Electrodes
Epidemiology
Force measurement
Load
Load cells
Mapping
Mastication
Measurement methods
Mechanical Phenomena
Mechanical properties
Portable equipment
Pressure
Pressure distribution
Quadratic equations
Sensors
Strain gauges
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Summary:Bite force is an important indicator of masticatory performance. However, existing methods for measuring bite force are either ineffective or expensive. Hence, we developed a novel capacitive-type pressure-mapping sensor that converts mechanical forces into changes in capacitance and calculates bite force. A portable device was fabricated based on this sensor sheet, and the accuracy of the bite-force measurements provided by the device was evaluated. The sensor has a thickness of 1.6 mm and has 63 measurement points. It was inserted into a dental model, where the output value was measured and compared with that of a universal testing machine (AG-IS 100 kN). A regression equation to estimate the bite force was obtained based on the relationship between the output of the capacitive-type pressure-mapping sensor and that of the load cell of the universal testing machine. The estimated bite force from the sensor and the quadratic regression equation closely resembled the known load applied by the compression tester (R = 0.992). We therefore conclude that the developed sensor can measure bite force accurately and effectively. A device with a built-in capacitive-type pressure-mapping sensor can potentially be a user-friendly tool for bite-force measurements in both clinical and epidemiological settings.
ISSN:1660-4601
1661-7827
1660-4601
DOI:10.3390/ijerph19031273