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Proceedings Paper

Measuring toothbrush interproximal penetration using image analysis
Author(s): Mark S. Hayworth; Elizabeth K. Lyons
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Paper Abstract

An image analysis method of measuring the effectiveness of a toothbrush in reaching the interproximal spaces of teeth is described. Artificial teeth are coated with a stain that approximates real plaque and then brushed with a toothbrush on a brushing machine. The teeth are then removed and turned sideways so that the interproximal surfaces can be imaged. The areas of stain that have been removed within masked regions that define the interproximal regions are measured and reported. These areas correspond to the interproximal areas of the tooth reached by the toothbrush bristles. The image analysis method produces more precise results (10-fold decrease in standard deviation) in a fraction (22%) of the time as compared to our prior visual grading method.

Paper Details

Date Published: 21 September 1994
PDF: 7 pages
Proc. SPIE 2298, Applications of Digital Image Processing XVII, (21 September 1994); doi: 10.1117/12.186584
Show Author Affiliations
Mark S. Hayworth, Procter & Gamble Co. (United States)
Elizabeth K. Lyons, Procter & Gamble Co. (United States)


Published in SPIE Proceedings Vol. 2298:
Applications of Digital Image Processing XVII
Andrew G. Tescher, Editor(s)

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