Natural Glass Toothpaste Abrasive Particle Size Control
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Solution Overview
Problem
Existing toothpaste compositions with abrasives like perlite can improve cleaning effectiveness but may lead to premature degradation of teeth due to excessive abrasiveness, causing undesirable erosion.
Innovation Solution
A toothpaste composition incorporating natural glass with a top particle size (d90) ranging from 20 µm to less than 50 micrometers and a median particle size (d50) less than 30 µm, comprising perlite, which reduces relative dentin abrasion and enhances pellicle cleaning ratio, thereby minimizing tooth erosion while maintaining effective cleaning and polishing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If abrasives like perlite are added to toothpaste to improve cleaning effectiveness, then cleaning effectiveness is improved, but tooth erosion increases due to excessive abrasiveness
Solution Approach 1:
The patent applies parameter changes by precisely controlling the particle size distribution of perlite, specifically setting d90 between 10-50 μm and d50 between 5-30 μm. This parameter optimization reduces the abrasiveness of perlite while maintaining its cleaning effectiveness, thereby resolving the contradiction between cleaning performance and tooth erosion prevention
Solution Approach 2:
The patent uses composite materials by combining perlite with other abrasive substances in specific ratios. This composite approach allows the benefits of perlite's cleaning effectiveness while mitigating its excessive abrasiveness through the complementary properties of other abrasives, thus balancing cleaning power and tooth protection
2Reliability
If perlite is used to enhance cleaning effectiveness, then stain removal is improved, but relative dentin abrasion value increases causing premature degradation
Solution Approach 1:
The patent employs parameter changes by optimizing the particle size distribution of perlite (d90: 10-50 μm, d50: 5-30 μm) and controlling the amount of perlite (0.1-25% by weight). These parameter adjustments reduce dentin abrasion while preserving cleaning effectiveness, thereby protecting tooth integrity without sacrificing reliability
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 composition effectively cleans teeth with reduced abrasiveness, achieving a relative dentin abrasion value less than 200 and a pellicle cleaning ratio of at least 110, indicating improved stain removal and whitening without excessive tooth wear.
Implementation Method 1
The abrasive component in toothpaste serves to improve its cleaning effectiveness
Data Source
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AI summary
A composition for cleaning teeth may include natural glass, wherein the natural glass has a top particle size (d90) less than 50 µm and a median particle size (d50) less than 30 µm, and wherein the natural glass ranges from 0.1 percent to 20 percent by weight of the composition. A natural glass composition may have a top particle size (d90) less than 50 µm, a median particle size (d50) less than 30 µm, and exhibit an RDA value less than 220. The composition for cleaning teeth may include a toothpaste base.