Dental Milling Resin Composition for Strength and Processability
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Solution Overview
Problem
Existing dental milling resin materials lack sufficient mechanical strength, which compromises the stability of dental prostheses in the oral cavity.
Innovation Solution
A dental composition comprising a polymerizable monomer with a urethane, urea, or carbonate group, and an inorganic filler is used to enhance mechanical strength, specifically utilizing a monomer with only one urethane group and an inorganic filler to improve the mechanical properties of the resin material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional dental resin materials are used for milling, then the material can be easily processed, but the mechanical strength is insufficient to ensure prosthesis stability in the oral cavity
Solution Approach 1:
The patent changes the chemical parameters of the resin material by specifying precise compositional ratios (70-90 wt% inorganic filler, 10-30 wt% polymerizable monomer with one urethane/urea/carbonate group) to achieve both high mechanical strength and adequate processability. This parameter optimization resolves the contradiction between strength and manufacturability.
Solution Approach 2:
The patent creates a composite material system combining inorganic filler particles with a specifically formulated polymerizable monomer containing urethane, urea, or carbonate groups. This composite structure leverages the strength of inorganic materials while maintaining the processability benefits of organic resins, simultaneously addressing both requirements.
2Strength
If the inorganic filler content is increased to improve mechanical strength, then the strength increases, but the viscosity and difficulty of handling increase
Solution Approach 1:
The patent optimizes the balance between inorganic filler content (70-90 wt%) and polymerizable monomer content (10-30 wt%) to achieve the desired mechanical strength while maintaining manageable viscosity. The specific compositional parameters ensure the material remains handleable despite high filler loading.
Solution Approach 2:
The polymerizable monomer with urethane, urea, or carbonate groups acts as an intermediary matrix that binds the inorganic filler particles together. This intermediary phase allows high filler content to be incorporated while maintaining workability during the uncured state, resolving the contradiction between strength and handling ease.
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 results in a dental milling resin material with improved mechanical strength, ensuring stability and reliability of dental prostheses.
Implementation Method 1
a polymerizable monomer including only one group selected from the group consisting of a urethane group, a urea group, and a carbonate group
Data Source
AI summary
A dental composition includes a polymerizable monomer including only one group selected from the group consisting of a urethane group, a urea group, and a carbonate group; and an inorganic filler.