Small-Grained Dental Cleaning Powder for Low-Abrasion Air Polishing

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Solution Overview

Problem

Existing dental cleaning powders cause abrasive damage to enamel, dentin, and cementum, limiting their applicability to supra-gingival cleaning, and are corrosive to restoration materials, while traditional methods cause patient discomfort.

Innovation Solution

Development of small-grained dental cleaning powders containing activated carbon with controlled particle sizes and additives, combined with an enzymatic liquid composition for air polishing devices, providing dual-action cleaning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional abrasive powders are used for dental cleaning, then cleaning effectiveness is improved, but abrasive damage to enamel, dentin and cementum increases

Engineering Contradiction:
Improvecleaning effectivenessVSAvoidabrasive damage to dental hard tissue
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the particle size parameter of the abrasive powder to a controlled range of 10-100 μm, which optimizes the balance between cleaning effectiveness and minimal damage to dental hard tissue. This specific particle size range allows effective biofilm removal while reducing excessive abrasion on enamel, dentin and cementum.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent uses composite powder formulations combining multiple abrasive materials with different properties. This composite approach allows synergistic effects where different materials contribute to cleaning effectiveness while their combined properties reduce harmful abrasion compared to single-material powders.

Inventive Principle:
Principle #40Composite materials

2Productivity

If traditional cleaning methods are used, then cleaning capability is improved, but patient discomfort increases

Engineering Contradiction:
Improvecleaning capabilityVSAvoidpatient discomfort
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces traditional mechanical scraping methods with a powder jet cleaning system that uses pressurized air to deliver abrasive particles. This substitution reduces direct mechanical contact and force applied to the teeth and surrounding tissues, thereby reducing patient discomfort while maintaining cleaning capability.

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

Solution Approach 2:

The patent employs pneumatic principles by using compressed air to propel the abrasive powder particles toward the dental surfaces. This pneumatic delivery system allows for controlled, non-contact cleaning that is gentler on patients compared to manual mechanical instruments.

Inventive Principle:
Principle #29Pneumatics and hydraulics

3Ease of operation

If existing dental powders are used, then supra-gingival cleaning is achieved, but sub-gingival cleaning safety is compromised

Engineering Contradiction:
Improvesupra-gingival cleaning applicabilityVSAvoidsub-gingival cleaning safety
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent modifies the particle size parameter to a finer range (10-100 μm) which enables safe penetration into sub-gingival areas without causing damage to periodontal tissues. This parameter optimization allows the same powder formulation to be safely used for both supra-gingival and sub-gingival cleaning.

Inventive Principle:
Principle #35Parameter changes

4Productivity

If conventional abrasive powders are used, then cleaning performance is improved, but corrosion to restoration materials occurs

Engineering Contradiction:
Improvecleaning performanceVSAvoidcorrosion to restoration materials
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters of the powder to use less corrosive abrasive materials. By selecting materials with appropriate chemical properties and controlling particle characteristics, the powder achieves effective cleaning while minimizing chemical corrosion and mechanical damage to dental restorations.

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 powders achieve safe sub-gingival and supra-gingival cleaning with minimal abrasion, effectively removing biofilm and reducing patient discomfort, while the enzymatic liquid enhances biofilm removal efficacy.

Implementation Method 1

a) activated carbon having a D90 particle size of between approximately 25 μm and approximately 45 μm

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 2

Powder jet cleaning is a method used for supra and sub-gingival cleaning of hard dental tissue from biofilm plaque, stains and deposits

Methodology Applied
Scientific EffectJet erosion: Jet Erosion

Data Source

PatentUS20250281373A1Powder and liquid compositions for dental care, and methods of use thereof
Publication Date: 2025.09.11 MORE GROUP PTY LTD
  • US20250281373A1 patent drawing
  • US20250281373A1 patent drawing
  • US20250281373A1 patent drawing

AI summary

Some aspects described herein provide power and liquid compositions, which may be utilized for dental care. Some aspects provide small grained compositions that include activated carbon with small particle size, which may be used for dental care. One aspect includes a dental cleaning powder. For example, the dental cleaning powder includes activated carbon. For example, the activated carbon may have a D90 particle size of between approximately 25 μm and approximately 45 μm. Another aspect includes a method for air polishing, which includes injecting to an oral cavity an aqueous solution of one or more water-soluble enzymes via a liquid compartment of an air polishing device.