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A method of bite force measurement in primates.

P C Dechow, D S Carlson

Journal of Biomechanics

|January 1, 1983

Summary

Researchers modified a bite force transducer to measure occlusal forces in rhesus monkeys. Muscle stimulation produced maximal masticatory muscle contraction, showing reproducible results for primate bite force studies.

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Area of Science:

Biomedical Engineering
Primate Physiology
Dental Biomechanics

Background:

Accurate measurement of occlusal forces is crucial for understanding masticatory function.
Previous methods for measuring bite force in primates had limitations.
Rhesus monkeys are a relevant model for studying primate mastication.

Purpose of the Study:

To modify a bite force transducer for precise occlusal force measurement in rhesus monkeys.
To establish a reliable method for inducing maximal masticatory muscle contraction.
To assess the potential of this method for future research on primate bite force.

Main Methods:

A bite force transducer with differential strain beams and strain gages was adapted.
Electrical stimulation parameters (20-50 V, 60 Hz, 0.8 ms) were applied to the masseter muscle.
Occlusal forces during induced maximal muscle contraction were recorded.

Main Results:

The modified transducer successfully measured occlusal forces in rhesus monkeys.
Muscle stimulation reliably produced maximal unilateral masticatory muscle contraction.
The procedure demonstrated reproducible results, indicating its stability and consistency.

Conclusions:

The modified bite force transducer and muscle stimulation protocol are effective for measuring occlusal forces in rhesus monkeys.
This methodology offers a reliable approach for studying isometric contraction forces in primate masticatory muscles.
The technique has significant potential for research on normal and experimentally altered primates.

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