Dental Porcelain Paste Composition for Stable Transparent Storage
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Solution Overview
Problem
Existing dental porcelain pastes face issues such as discoloration, reduced transparency, and solidification during long-term storage, which affect aesthetic quality and workability.
Innovation Solution
A dental porcelain paste formulation containing a cationic surfactant, glass powder, and alcohol, with specific mass ratios and particle sizes, prevents discoloration and solidification while maintaining transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a dental paste porcelain material containing polymer material is used, then the paste is stable in long-term storage and not easily dried or hardened, but the porcelain material is discolored to black or gray in baking
Solution Approach 1:
The invention changes the chemical composition parameters by replacing polymer materials with inorganic powder materials (specifically colloidal silica and glass powder) as the binder system. This parameter change eliminates organic carbonization during baking while maintaining paste stability through the inorganic powder-solvent interaction, resolving the discoloration issue while preserving storage stability.
Solution Approach 2:
The invention uses a composite material system combining colloidal silica, glass powder, and specific solvents (glycol or glycerol) to create an inorganic-based paste formulation. This composite replaces the organic polymer system, achieving both storage stability and baking stability without discoloration, while also improving aesthetic quality.
2Stability of the object's composition
If inorganic fine powder is added to dental paste material, then the paste is not settled in long-term storage, but the paste is colored resulting in deterioration of aesthetic quality
Solution Approach 1:
The invention applies local quality by using ultra-fine colloidal silica particles (5-50 nm) that are transparent or translucent, rather than larger inorganic particles that would cause visible coloring. The specific particle size range provides anti-settling functionality through Brownian motion while maintaining optical transparency, thus improving storage stability without compromising aesthetic quality.
Solution Approach 2:
The invention changes the particle size parameter of inorganic additives to the ultra-fine colloidal range (5-50 nm), which fundamentally alters both the functional properties (anti-settling through enhanced Brownian motion) and optical properties (transparency). This parameter optimization resolves the contradiction between storage stability and aesthetic quality.
3Stability of the object's composition
If glass powder and solvent are separated in long-term storage, then the paste solidifies, but it becomes difficult to restore the coatability immediately after producing the paste
Solution Approach 1:
The invention introduces a specific intermediary substance (colloidal silica) that acts as a dispersant and stabilizer between the glass powder and solvent. The colloidal silica prevents direct aggregation and settling of glass particles by providing steric and electrostatic stabilization, ensuring uniform distribution even after long-term storage and easy re-dispersibility upon agitation, thus maintaining coatability.
Solution Approach 2:
The invention ensures continuity of useful action by maintaining the paste in a stable, non-separated state throughout long-term storage. The colloidal silica-glass powder-solvent system prevents sedimentation and maintains homogeneous composition, so that upon simple agitation, the paste immediately returns to its original coatable state without requiring extended restoration time.
4Adaptability or versatility
If porcelain material in the form of powder is used, then the mixing ratio can be regulated, but a complicated procedure of mixing with solvent is required every time
Solution Approach 1:
The invention applies preliminary action by pre-mixing the porcelain powder with colloidal silica and solvent in optimized proportions during manufacturing to create a ready-to-use paste formulation. This preliminary preparation eliminates the need for repeated mixing operations by the dental technician, as the paste maintains stable viscosity and homogeneity over time, allowing direct application without additional mixing steps, thus improving productivity while preserving color tone control.
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 paste maintains transparency and prevents solidification during storage, ensuring easy restoration and improved aesthetic quality after baking.
Implementation Method 1
a dental porcelain paste containing a cationic surfactant (A), glass powder (B), and an alcohol (C)
Implementation Method 2
an alcohol (C)... the paste maintains transparency and prevents solidification during storage
Implementation Method 3
glass powder (B)... the paste maintains transparency and prevents solidification during storage
Data Source
AI summary
The present invention relates to a dental porcelain paste containing a cationic surfactant (A), glass powder (B), and an alcohol (C).