Electric Toothbrush Paste Surfactant Ratio

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Electric toothbrushes can cause damage to tooth enamel due to excessive abrasiveness and mechanical issues, such as brush head mechanics becoming stuck, when used with conventional toothpastes, and there is a need for a formulation that balances cleaning performance with protection of the brush head and adhesion to the toothpaste.

Innovation Solution

A dental care agent containing a specific ratio of anionic and amphoteric surfactants, along with polishing agents, optimized to provide effective cleaning without excessive abrasiveness, protect the brush head mechanics, and ensure sufficient adhesion to the brush head, with preferred ranges of 1.6-2.2% anionic surfactant by weight and a weight ratio of anionic to amphoteric surfactants ≥ 6, and a polishing agent to surfactant ratio of ≥ 5.25 to ≤ 5.6.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional toothpaste with high abrasive content is used to achieve effective cleaning, then cleaning performance is improved, but damage to tooth enamel occurs and brush head mechanics become stuck

Engineering Contradiction:

Improvecleaning performanceVSAvoiddamage to tooth enamel and brush head mechanics

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters of the toothpaste by specifying precise ranges: anionic surfactant content of 1.6-2.2% by weight, polishing agent content of 8.4-11.2% by weight, and a weight ratio of anionic to amphoteric surfactants of ≥6. These parameter adjustments reduce abrasiveness while maintaining cleaning effectiveness, preventing damage to both tooth enamel and brush head mechanics.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If polishing agent content is increased to improve cleaning performance, then cleaning effectiveness is improved, but abrasiveness increases causing damage to tooth enamel

Engineering Contradiction:

Improvecleaning effectivenessVSAvoidabrasiveness and damage to tooth enamel

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent optimizes the polishing agent content to a specific range of 8.4-11.2% by weight, which provides sufficient cleaning effectiveness while controlling abrasiveness. This parameter change ensures that the polishing action is effective but not damaging to tooth enamel when used with electric toothbrushes.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite surfactant system combining anionic and amphoteric surfactants in a specific weight ratio (≥6). This composite formulation enhances cleaning performance through synergistic action while reducing the need for high abrasive content, thereby protecting tooth enamel from damage.

Inventive Principle:

Principle #40Composite materials

3Ease of operation

If surfactant content is increased to improve adhesion to brush head, then adhesion is improved, but brush head mechanics become stuck

Engineering Contradiction:

Improveadhesion to brush headVSAvoidbrush head mechanics becoming stuck

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent precisely controls the anionic surfactant content at 1.6-2.2% by weight and maintains a weight ratio of anionic to amphoteric surfactants of ≥6. This parameter optimization provides sufficient adhesion to the brush head for effective toothpaste application while preventing the surfactant buildup that causes mechanics to become stuck.

Inventive Principle:

Principle #35Parameter changes

4Object-affected harmful factors

If abrasive content is reduced to protect tooth enamel, then protection of tooth enamel is improved, but cleaning performance decreases

Engineering Contradiction:

Improveprotection of tooth enamelVSAvoidcleaning performance

Core Design Contradiction:

Object-affected harmful factorsVSProductivity

Solution Approach 1:

The patent develops a composite surfactant system with anionic and amphoteric surfactants in a specific weight ratio (≥6). This composite formulation provides enhanced cleaning performance through synergistic action, allowing reduced abrasive content (8.4-11.2% polishing agents) while maintaining effective cleaning capability.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent optimizes the polishing agent content to 8.4-11.2% by weight, which is lower than conventional toothpastes but maintains cleaning performance when combined with the optimized surfactant system. This parameter change protects tooth enamel from excessive abrasion while preserving cleaning effectiveness.

Inventive Principle:

Principle #35Parameter changes

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 solution ensures high cleaning performance while protecting the sensitive mechanics of electric toothbrushes and maintaining sufficient adhesion, preventing damage to tooth enamel and ensuring smooth operation of the brush head mechanics.

Implementation Method 1

a) at least one anionic surfactant, b) at least one amphoteric surfactant

Methodology Applied

Scientific EffectSurfactant: Surfactant

Data Source

PatentEP2753299B1Special toothpaste for electric tooth brushes

Publication Date: 2016.09.28 HENKEL KGAA

Figure 1~3

AI summary

The invention relates to oral and dental care and cleaning products containing at least one anionic surfactant and at least one amphoteric surfactant, the weight ratio of anionic to amphoteric surfactant(s) being > 6 in the oral and dental care and cleaning products that are specially suited for electric tooth brushes.