Dental Compositions Using Organogelators for Flowability and Strength

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Solution Overview

Problem

Current dental materials, particularly polymerizable resins, lack versatility and performance in terms of flowability, packability, and self-supporting properties, which limits their application in dental restoratives and prostheses, requiring additional materials with improved mechanical properties and handling characteristics.

Innovation Solution

Development of hardenable dental compositions incorporating organogelators and polymerizable components with crystalline or filler materials, enabling flowable, packable, and self-supporting properties, allowing for customized fitting and hardening without additional veneering materials, using photopolymerization or chemical curing mechanisms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional polymerizable resins are used, then the material can be processed, but it lacks versatility and performance in flowability, packability, and self-supporting properties

Engineering Contradiction:
ImproveversatilityVSAvoidperformance
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent combines multiple materials (polymerizable resin, organogelator, crystalline material, and filler material) into a composite dental composition that achieves superior flowability, packability, and self-supporting properties simultaneously, resolving the contradiction between versatility and performance

Inventive Principle:
Principle #40Composite materials

2Strength

If additional veneering materials are used to achieve desired properties, then mechanical properties can be improved, but the device complexity and number of steps increase

Engineering Contradiction:
Improvemechanical propertiesVSAvoidadditional materials
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The patent creates a single multi-functional dental composition that simultaneously provides structural integrity, flowability, packability, and self-supporting properties, eliminating the need for separate veneering materials and reducing overall complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Ease of operation

If the composition is made flowable with lower viscosity, then it can be dispensed from narrow-tip syringe, but the filler loading must be reduced

Engineering Contradiction:
ImproveflowabilityVSAvoidfiller loading
Core Design Contradiction:
Ease of operationVSQuantity of substance

Solution Approach 1:

The patent uses organogelators to fundamentally change the rheological parameters of the composition, enabling high filler loading while maintaining flowability through unique gel structure formation that does not rely on traditional viscosity reduction

Inventive Principle:
Principle #35Parameter changes

4Ease of operation

If the composition is made packable with higher viscosity, then handling characteristics improve, but the material becomes more viscous than standard composites

Engineering Contradiction:
Improvehandling characteristicsVSAvoidviscosity
Core Design Contradiction:
Ease of operationVSTemperature

Solution Approach 1:

The patent incorporates crystalline materials that undergo phase transitions, allowing the composition to exhibit packable characteristics at room temperature while maintaining appropriate flow properties during placement, resolving the viscosity contradiction

Inventive Principle:
Principle #36Phase transitions

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 compositions provide enhanced mechanical properties, such as flexural strength and compressive strength, enabling their use in various dental applications, including crowns, bridges, and orthodontic adhesives, with improved handling and customization capabilities.

Implementation Method 1

an organogelator in an amount of at least 0.4 wt-%, based on the total weight of the organogelator plus polymerizable component

Methodology Applied
Scientific EffectGel formation: Gel

Implementation Method 2

forming a non-flowable gel that exhibits a thermally reversible transition between the liquid state and the gel state when the temperature is varied above or below the gel point

Methodology Applied
Scientific EffectThermally reversible transition: Phase Change

Implementation Method 3

a crystalline material and/or filler material comprising nanoscopic particles

Methodology Applied
Scientific EffectNanoscopic particle reinforcement: Nanocomposite

Implementation Method 4

using photopolymerization or chemical curing mechanisms

Methodology Applied
Scientific EffectPhotopolymerization: Photopolymerisation

Implementation Method 5

a crystalline material and/or filler material comprising nanoscopic particles

Methodology Applied
Scientific EffectChemical curing: Chemical Bonding

Data Source

PatentEP2073782B1Dental compositions including organogelators, products, and methods
Publication Date: 2011.07.20 3M INNOVATIVE PROPERTIES CO
  • EP2073782B1 patent drawing
  • EP2073782B1 patent drawing
  • EP2073782B1 patent drawing

AI summary

A hardenable dental composition that includes a polymerizable component and an organogelator.