Stereolithographic Adhesive Composition for Denture Base Materials
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Solution Overview
Problem
Current adhesive materials for stereolithographically produced denture base materials and sleep disorder treatment tools face challenges in achieving strong adhesion due to high crosslink density and the use of volatile solvents, which also result in unpleasant odors and difficulty in permeation.
Innovation Solution
A stereolithographic article adhesive composition comprising a multifunctional (meth)acrylic-based polymerizable monomer and a photopolymerization initiator, specifically including urethanated (meth)acrylic acid ester compounds, aromatic compound-based (meth)acrylic acid ester compounds, and (meth)acrylamide group-containing polymerizable monomers, which provide excellent adhesiveness and low odor, suitable for lining and restoring denture base materials and sleep disorder treatment tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a denture base material is produced by stereolithography using a crosslinkable monomer or monomer with high cohesion, then the curability and strength are improved, but the crosslink density increases making it difficult for adhesive materials to permeate
Solution Approach 1:
The invention changes the chemical composition parameters of the adhesive material by incorporating specific solvents (ethyl acetate, butyl acetate, methylene chloride) and polymerizable monomers (HEMA, BIS-GMA, UDMA) in controlled ratios. This allows the adhesive to achieve optimal balance between permeation capability and adhesion strength, enabling effective penetration into high-crosslink-density stereolithographic articles while maintaining strong bonding.
Solution Approach 2:
The adhesive material is formulated as a composite system combining multiple components: solvents for penetration, polymerizable monomers for bonding, and photopolymerization initiators for curing. This composite approach allows each component to address specific requirements - solvents enable permeation, monomers provide adhesion, and initiators ensure complete curing, collectively resolving the contradiction between strength and permeation.
2Device complexity
If conventional adhesive materials using methacrylic acid ester-based polymers and organic solvents are used, then the adhesive composition is simple, but significant unpleasant odors are generated
Solution Approach 1:
The invention modifies the chemical parameters of the adhesive by selecting specific monomers with higher boiling points and lower odor characteristics. The use of HEMA, BIS-GMA, and UDMA in controlled concentrations reduces volatile organic compound emissions and unpleasant odors while maintaining effective adhesion performance, thus resolving the contradiction between composition simplicity and odor reduction.
3Reliability
If MMA is used as the main agent for lining and restoration, then the adhesive effectiveness is improved, but the use of volatile solvents generates unpleasant odors
Solution Approach 1:
The invention creates a composite adhesive formulation that combines MMA with other polymerizable monomers (HEMA, BIS-GMA, UDMA) and specific solvents. This composite approach dilutes the concentration of highly volatile MMA, reducing unpleasant odors, while the synergistic combination of multiple monomers maintains or enhances adhesive effectiveness and bonding 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 adhesive composition effectively permeates high-crosslink-density stereolithographic articles, offering excellent adhesiveness and low odor, making it suitable for clinical use in denture base materials and sleep disorder treatment tools, with improved adhesion strength and reduced unpleasant odors compared to conventional methods.
Implementation Method 1
a stereolithographic article adhesive composition comprising a multifunctional (meth)acrylic-based polymerizable monomer (A) and a photopolymerization initiator (B)
Data Source
AI summary
The present invention provides a stereolithographic article adhesive composition having excellent adhesiveness with respect to a shaped article produced by stereolithography. The present invention relates to a stereolithographic article adhesive composition comprising a multifunctional (meth)acrylic-based polymerizable monomer (A) and a photopolymerization initiator (B). The multifunctional (meth)acrylic-based polymerizable monomer (A) preferably contains at least one of a urethanated (meth)acrylic acid ester compound (a-1), an aromatic compound-based (meth)acrylic acid ester compound (a-2) containing no urethane bond, and a (meth)acrylamide group-containing polymerizable monomer (a-3).