Bite force measurement based on fiber Bragg grating sensor

Srivani Padma; Sharath Umesh; Sundarrajan Asokan; Talabattula Srinivas

doi:10.1117/1.JBO.22.10.107002

31 October 2017 Bite force measurement based on fiber Bragg grating sensor

Srivani Padma, Sharath Umesh, Sundarrajan Asokan, Talabattula Srinivas

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Journal of Biomedical Optics, Vol. 22, Issue 10, 107002 (October 2017). https://doi.org/10.1117/1.JBO.22.10.107002

Abstract

The maximum level of voluntary bite force, which results from the combined action of muscle of mastication, joints, and teeth, i.e., craniomandibular structure, is considered as one of the major indicators for the functional state of the masticatory system. Measurement of voluntary bite force provides useful data for the jaw muscle function and activity along with assessment of prosthetics. This study proposes an in vivo methodology for the dynamic measurement of bite force employing a fiber Bragg grating (FBG) sensor known as bite force measurement device (BFMD). The BFMD developed is a noninvasive intraoral device, which transduces the bite force exerted at the occlusal surface into strain variations on a metal plate. These strain variations are acquired by the FBG sensor bonded over it. The BFMD developed facilitates adjustment of the distance between the biting platform, which is essential to capture the maximum voluntary bite force at three different positions of teeth, namely incisor, premolar, and molar sites. The clinically relevant bite forces are measured at incisor, molar, and premolar position and have been compared against each other. Furthermore, the bite forces measured with all subjects are segregated according to gender and also compared against each other.

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Srivani Padma, Sharath Umesh, Sundarrajan Asokan, and Talabattula Srinivas "Bite force measurement based on fiber Bragg grating sensor," Journal of Biomedical Optics 22(10), 107002 (31 October 2017). https://doi.org/10.1117/1.JBO.22.10.107002

Received: 20 July 2017; Accepted: 11 October 2017; Published: 31 October 2017

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KEYWORDS

Fiber Bragg gratings

Sensors

Teeth

Calibration

Measurement devices

Optical fibers

Temperature metrology

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