Toothbrush Head Color-Change Filaments for Wear Indication
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Solution Overview
Problem
Toothbrushes are often not replaced regularly, leading to diminished effectiveness in maintaining oral hygiene due to wear, which can result in increased plaque accumulation and gum damage, despite professional recommendations for replacement after three months.
Innovation Solution
Incorporating colored filaments with time-controlled color-changing properties in the toothbrush head, where the color change indicates wear, providing a visual signal for timely replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users rely on memory to track toothbrush wear and replacement timing, then users maintain control over their oral care routine, but compliance with recommended replacement intervals deteriorates significantly
Solution Approach 1:
The toothbrush head performs self-monitoring of its wear state through color-changing filaments that automatically indicate when replacement is needed, eliminating the need for users to manually track usage time or assess wear conditions
Solution Approach 2:
The patent implements visual signaling through filaments that change color based on wear level, providing an intuitive and immediate indicator that prompts users to replace the toothbrush head at the appropriate time
2Productivity
If toothbrushes are used beyond their effective useful life, then users reduce replacement frequency and save resources, but oral hygiene effectiveness deteriorates due to filament wear
Solution Approach 1:
The color-changing filaments provide real-time feedback on the wear state of the toothbrush head, allowing users to monitor degradation and replace the product before cleaning effectiveness is compromised
Solution Approach 2:
The visual indicator signals replacement need before complete filament degradation occurs, enabling users to proactively replace the toothbrush head while it still maintains effective cleaning performance
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The color change in the filaments effectively signals when the toothbrush needs replacement, significantly increasing user compliance with recommended replacement intervals.
Implementation Method 1
both types having time-controlled color changing properties, so that each of the first and second type of filament changes its color from an initial color to a second color within a pre-defined time period
Data Source
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AI summary
A head for an oral care implement, the head comprises a number of colored filaments of different types, the filaments extending from a mounting surface of the head and being grouped together to define a color pattern. The number of colored filaments of different types comprises at least a first type of filament having time-controlled color changing properties and a second type of filament having time-controlled color changing properties, so that each of the first and second type of filament changes its color from an initial color to a second color within a pre-defined time period. The initial color of the first and second type of filament defining an initial color pattern Cabnew∗‾, while the second color of the first and second type of filament defining a second color pattern Cabused∗‾. The change from the initial color pattern to the second color pattern is defined by a difference in value of colorfulness ΔCab∗‾=Cabnew∗‾−Cabused∗‾. The change in value of colorfulness ΔCab∗‾ is at least 5 in response to use and wear.