Instrument for measuring human biting force

Harri K. Kopola; Olavi Mantyla; Matti Makiniemi; Kalevi Mahonen; Kauko Virtanen

doi:10.1117/12.201239

10 February 1995 Instrument for measuring human biting force

Harri K. Kopola, Olavi Mantyla, Matti Makiniemi, Kalevi Mahonen, Kauko Virtanen

Proceedings Volume 2331, Medical Sensors II and Fiber Optic Sensors; (1995) https://doi.org/10.1117/12.201239
Event: International Symposium on Biomedical Optics Europe '94, 1994, Lille, France

Abstract

Alongside EMG activity, biting force is the primary parameter used for assessing the biting problems of dentulous patients and patients with dentures. In a highly conductive oral cavity, dielectric measurement methods are preferred, for safety reasons. The maximum biting force for patients with removable dentures is not more than 100 ... 300 N. We report here on an instrument developed for measuring human biting force which consists of three units: a mouthpiece, a signal processing and interface unit (SPI), and a PC. The mouthpiece comprises a sensor head of thickness 3.4 mm, width 20 mm and length 30 mm constructed of two stainless steel plates and with a fiber optic microbending sensor between them. This is connected to the SPI unit by a three-meter fiber optic cable, and the SPI unit to the PC by an RS connection. A computer program has been developed that includes measurement, display, zeroing, and calibration operations. The instrument measures biting force as a function of time and displays the time-dependent force profile and maximum force on a screen or plots it in hard copy. The dynamic measurement range of the mouthpiece is from 0 to 1000 N, and the resolution of the instrument is 10 N. The results of preliminary clinical measurements and repeatability tests are reported.

Citation Download Citation

Harri K. Kopola, Olavi Mantyla, Matti Makiniemi, Kalevi Mahonen, and Kauko Virtanen "Instrument for measuring human biting force", Proc. SPIE 2331, Medical Sensors II and Fiber Optic Sensors, (10 February 1995); https://doi.org/10.1117/12.201239

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