School of Dentistry


Minnesota Dental Research Center for Biomaterials and Biomechanics

Oral Hygiene Simulator

Oral Hygiene Simulator

Tooth brushing has some of the features of the chewing cycle in that there is an application Force under Load control in one direction, with a Stroke control movement at approximately right angles. An independent four-station toothbrush simulator was developed and built on these principles. The brushes are held by four independent DC servo-motors under load control, and an effective movement at right angles is accomplished by a fifth motor. The tooth brushing simulator is very flexible and allows many different kinds of brush movement, including vertical, horizontal, and figure-eight configurations.

Tooth Brush Machine

Tooth Brushing Forces

The tooth brushing forces were established by attaching strain gauges to toothbrushes and using human subjects to apply their usual tooth brushing techniques. Extensive clinical correlations have been carried out and published on the ranges of force, movement, and effective clinically equivalent brushing regimes in terms of time and frequency of brushing. As with ART 1 and ART 2, this simulator has played a crucial role in the development of polishable composites and the retention of materials and sealants on shallow cavities and dental fissures.

Tooth Brush

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  • Last modified on August 29, 2012