Solid Freeform Fabrication Material Set for Dental Prosthetics
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Solution Overview
Problem
Conventional methods for fabricating dental prosthetics using resin materials face challenges such as thermal decomposition, inability to use normal lasers for sintering, and limitations in color control, which hinder the additive manufacturing process and result in objects with poor mechanical strength and long fabrication times.
Innovation Solution
A solid freeform fabrication material set comprising a material A with a polymerization initiator and organic or inorganic particles, and a material B with a polymerizable compound, allowing for efficient layer formation and curing without external energy sources, enabling rapid production of strong and dimensionally accurate dental prosthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If resin is used as the main component for prosthetic teeth, then the material can be processed by conventional methods, but the resin may be thermally decomposed and normal laser cannot be used for sintering
Solution Approach 1:
The patent changes the chemical composition parameters of the resin material by incorporating specific fillers (zirconia, glass, etc.) and chemical agents (cross-linking agents, reaction promoters) to modify the resin's thermal properties and enable laser sintering without decomposition
Solution Approach 2:
The patent creates a composite material system combining resin with inorganic fillers (zirconia, glass) and organic additives (cross-linking agents, reaction promoters) to achieve both processability and thermal stability simultaneously
2Extent of automation
If conventional laser sintering is used for resin materials, then the fabrication process can be automated, but color controlling is not possible and mechanical strength is poor
Solution Approach 1:
The patent incorporates inorganic fillers (zirconia, glass) into the resin matrix to significantly enhance mechanical strength while maintaining the automation capability of laser sintering processes
Solution Approach 2:
The patent modifies the material composition to include cross-linking agents and reaction promoters that enable post-sintering chemical reactions to further strengthen the prosthetic structure
3Device complexity
If resin materials are used for dental prosthetics, then the fabrication process can be simplified, but the fabrication time is long and mechanical strength is poor
Solution Approach 1:
The patent incorporates reaction promoters and cross-linking agents that enable rapid chemical reactions during and after sintering, dramatically reducing the total fabrication time while maintaining process simplicity
Solution Approach 2:
The patent pre-mixes the resin material with all necessary components (fillers, cross-linking agents, reaction promoters) before sintering, so that subsequent chemical reactions occur automatically without additional processing steps, maintaining simplicity while accelerating fabrication
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 solution enables the efficient and immediate fabrication of complex dental prosthetics with high strength, excellent dimension accuracy, and aesthetic quality, overcoming the limitations of traditional methods by using a combination of polymerization initiators and particles to facilitate rapid curing and improved mechanical properties.
Implementation Method 1
a material A for solid freeform fabrication including a polymerization initiator A and at least one of an organic particle and an inorganic particle and a material B for solid freedom fabrication including a polymerizable compound B
Data Source
AI summary
A solid freeform fabrication material set includes a material A for solid freeform fabrication and a material B for solid freedom fabrication. The material A includes a polymerization initiator A and at least one of an organic particle and an inorganic particle. The material B includes a polymerizable compound B.