Adaptive Toothbrush Routine Based on Brush Physical Properties

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Solution Overview

Problem

Existing oral care systems fail to account for the varying properties of toothbrushes, leading to inconsistent brushing effectiveness, as the standard two-minute routine does not consider the impact of brush properties on cleaning efficiency.

Innovation Solution

An oral care system that includes a toothbrush with physical properties and a programmable processor to receive data on these properties, determining a suggested brushing routine and evaluation based on the received data, using methods such as RFID tags, cameras, and user input to adapt the brushing routine to the toothbrush's characteristics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a standard two-minute brushing routine is used, then the brushing time is simplified and easy to follow, but the brushing effectiveness varies due to not considering different toothbrush properties

Engineering Contradiction:
Improvebrushing routine simplicityVSAvoidbrushing effectiveness
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The brushing routine is made dynamic by automatically adjusting brushing time based on the detected toothbrush properties. The system transitions from a static standard routine to an adaptive routine that changes according to the brush's physical characteristics, resolving the contradiction between simplicity and effectiveness.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the parameter of brushing time based on toothbrush properties such as bristle hardness, head size, and handle length. By modifying this critical parameter dynamically, the system maintains ease of use while significantly improving brushing effectiveness for different brush types.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If toothbrush properties are considered in the brushing routine, then brushing effectiveness is improved, but the system complexity increases

Engineering Contradiction:
Improvebrushing effectivenessVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The toothbrush system performs self-identification of its properties through embedded sensors and processors that automatically detect and communicate brush characteristics to the oral care system, eliminating the need for manual user input and reducing overall system complexity.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system replaces complex manual assessment mechanisms with automated electronic sensing and processing. Instead of requiring users to manually describe brush properties, the system uses electronic sensors and image processing to automatically identify toothbrush characteristics, simplifying the interaction while improving effectiveness.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If manual selection of toothbrush properties is required, then the system can adapt to different brushes, but the user burden and time required increase

Engineering Contradiction:
Improvebrush adaptation capabilityVSAvoiduser time input
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The toothbrush automatically identifies its own properties through integrated sensors and processors, eliminating the need for users to manually select or describe brush characteristics. This self-identification service reduces user time burden while maintaining full adaptability to different brush types.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system performs preliminary detection and characterization of toothbrush properties before the brushing routine begins. By pre-identifying brush characteristics through automated sensing, the system eliminates the need for users to spend time on property selection, immediately adapting the routine to the specific brush being used.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3525619B1Oral care system
Publication Date: 2026.03.25 COLGATE PALMOLIVE CO
  • EP3525619B1 patent drawingFigure 1A
  • EP3525619B1 patent drawingFigure 1B
  • EP3525619B1 patent drawingFigure 2

AI summary

In one embodiment, an oral care system may include a toothbrush comprising a physical property, and a programmable processor configured to receive physical property data indicative of the physical property of the toothbrush. The programmable processor may be further configured to determine, based at least in part upon the received physical property data, a suggested brushing routine for a user and/or an evaluation of a brushing session of a user