Tooth brushing evaluation method and system

Abstract

The invention discloses a tooth brushing evaluation method and a tooth brushing evaluation system. The method comprises the following steps: S1, acquiring a three-axis acceleration signal output by a three-axis accelerometer arranged in an intelligent toothbrush and a three-axis angular velocity signal output by a three-axis gyroscope; S2, segmenting the acquired sampling data into multiple time window data by using a fixed length window segmentation method; S3, calculating the mean of three-axis acceleration data of each time window data, variance of resultant acceleration data, variance of resultant angular velocity and variance of three-axis angular velocity data, and performing attitude solution on quaternion of the calculated sampling data so as to obtain a relative eulerian angle; S4, obtaining the tooth brushing duration, tooth brushing coverage and tooth brushing positive attitude rate according to calculation results in the step S4; and S5, respectively multiplying the tooth brushing duration, tooth brushing coverage and tooth brushing positive attitude rate by respective weight, and adding so as to obtain the tooth brushing evaluation result. According to the method disclosed by the invention, the tooth brushing duration, tooth brushing coverage and tooth brushing positive attitude rate can be comprehensively analyzed so as to obtain quantitative tooth brushing evaluation results.

Description

technical field [0001] The invention relates to the technical field of oral health. More specifically, it relates to a toothbrushing evaluation method and system. Background technique [0002] Research surveys show that the periodontal health rate of adults aged 35-44 in China is only 14.5%, and people's awareness of oral health lags far behind developed countries, while 85% of dental caries and periodontal disease can be avoided by effective tooth brushing. [0003] At present, the standardized brushing method recommended by the Chinese Stomatological Association is the horizontal vibration brushing method (simplified as the brushing method). The brushing method is a method of brushing teeth that can effectively remove plaque in the gingival sulcus; Brushing, mastering this method of brushing teeth can help remove plaque on each tooth surface, and at the same time effectively remove plaque in the neck of the tooth and in the gingival sulcus; the specific operation essentia...

AI Technical Summary

Problems solved by technology

[0006] At this stage, smart tooth brushing products have become an important application of oral health care. Some products on the market, based on sensor data, give feedback on the user’s tooth brushing effect in the form of scores; however, some of these scoring rules are only related to brushing time, and some It only relies on area identification and does not list effective brushing methods as an assessment guide, which is insufficient in comprehensiveness and rationality

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