1B27 Three-Dimensional Measuring System for Tooth Brushing Motion and Brushing Force

Abstract

Dental plaque is a primary factor of caries and periodontal disease. Manual tooth brushing is important to remove plaque. This research was conducted to develop a three-dimensional measuring system to evaluate tooth brushing skill objectively. A six degree-of-freedom magnetic motion tracking sensor was used to measure tooth brushing motion. Two three-dimensional force sensors were incorporated into the toothbrush's head and were used for tooth brushing force measurement. Experimental results showed that the brushing force vector and its application point can be quantified properly using the proposed system.