Composite Resin Denture Block Without Final Sintering

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Solution Overview

Problem

Existing dentures made from zirconia ceramic blocks and glass ceramics are brittle, difficult to cut and grind precisely, and require complex final sintering processes, leading to low processing efficiency.

Innovation Solution

A composite resin denture porcelain block composed of carbamate dimethacrylate, bisphenol A-glycidyl dimethacrylate, triethylene glycol dimethacrylate, glass powder, ZrO2, SiO2, and ZrO2-SiO2 composite powder, with additives for strength and coloring, is prepared by mixing, drying, degassing, and molding under high temperature and pressure, eliminating the need for final sintering.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If zirconia ceramic blocks or glass ceramics are used for dentures, then the dentures have high strength and durability, but they are brittle, difficult to cut and grind precisely, and require complex final sintering processes

Engineering Contradiction:

Improvestrength and durabilityVSAvoiddifficulty to cut and grind, complex sintering process

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The patent uses a composite material system consisting of resin matrix (carbamate dimethacrylate, bisphenol A-glycidyl dimethacrylate, triethylene glycol dimethacrylate) combined with inorganic fillers (glass powder, ZrO2, SiO2, diatomite). This composite structure provides both the strength from inorganic components and the processability from the resin matrix, eliminating the need for complex sintering while maintaining durability

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent changes the material state from traditional ceramic requiring sintering to a resin-based composite that can be processed at lower temperatures. The specific parameter change involves using resin monomers that can be cured to form a strong but processable material, allowing cutting and grinding before final curing, thus improving ease of manufacture

Inventive Principle:

Principle #35Parameter changes

2Strength

If zirconia ceramic blocks or glass ceramics are used for dentures, then the dentures have high strength, but they require final sintering which is a complex process and results in low processing efficiency

Engineering Contradiction:

ImprovestrengthVSAvoidprocessing efficiency

Core Design Contradiction:

StrengthVSProductivity

Solution Approach 1:

The patent changes the processing temperature parameter from high-temperature sintering (required for ceramics) to lower-temperature resin curing. This parameter change eliminates the time-consuming sintering process while maintaining material strength through the resin-inorganic composite structure, thereby significantly improving processing efficiency

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces the thermal-sintering mechanism with a chemical-curing mechanism. Instead of using high-temperature thermal fields to bond ceramic particles, the patent uses chemical polymerization of resin monomers to bind inorganic fillers, creating a strong composite material without requiring complex sintering equipment or prolonged processing time

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 composite resin denture exhibits low brittleness, excellent cutting and grinding performance, precise processing, and improved efficiency, with mechanical properties matching natural dentin for comfortable occlusion.

Implementation Method 1

0.1% to 15% of carbamate dimethacrylate, 0.1% to 10% of bisphenol A-glycidyl dimethacrylate, 3% to 20% of triethylene glycol dimethacrylate

Methodology Applied

Scientific EffectPolymerization: Photopolymerisation

Implementation Method 2

0.01% to 3% of benzoyl peroxide

Methodology Applied

Scientific EffectFree radical initiation:

Implementation Method 3

0.01% to 3% of N,N dihydroxyethyl p-toluidine

Methodology Applied

Scientific EffectCatalysis: Catalysis

Implementation Method 4

0.01% to 3% of 2,6 di-tert-butyl p-cresol

Methodology Applied

Scientific EffectRadical scavenging:

Implementation Method 5

35% to 85% of glass powder, 0.1% to 8% of ZrO2, 3% to 15% of SiO2, 2% to 17% of diatomite

Methodology Applied

Scientific EffectComposite reinforcement: Composite Materials

Implementation Method 6

0.001% to 0.2% of iron oxide red, 0.001% to 0.2% of iron oxide black, and 0.001% to 0.5% of iron oxide yellow

Methodology Applied

Scientific EffectLight absorption: Absorption (EM radiation)

Data Source

PatentUS12533301B2Composite resin denture porcelain block, preparation method thereof and composite resin denture

Publication Date: 2026.01.27 SHENZHEN YURUCHENG DENTAL MATERIALS CO LTD

AI summary

Disclosed are a composite resin denture porcelain block, a preparation method thereof and a composite resin denture. The composite resin denture porcelain block includes 0.1% to 15% of carbamate dimethacrylate, 0.1% to 10% of bisphenol A-di glycidyl methacrylate, 3% to 20% of triethylene glycol dimethacrylate, 35% to 85% of glass powder, 0.1% to 8% of ZrO2, 3% to 15% of SiO2, 0.1% to 40% of ZrO2—SiO2 composite powder, 2% to 17% of diatomite, 0.01% to 3% of benzoyl peroxide, 0.01% to 3% of N,N dihydroxyethyl p-toluidine, 0.01% to 3% of 2,6 di-tert-butyl p-cresol, 0.001% to 0.2% of iron oxide red, 0.001% to 0.2% of iron oxide black, and 0.001% to 0.5% of iron oxide yellow. The composite resin denture porcelain block of the present application uses carbamate dimethacrylate, bisphenol A-di glycidyl methacrylate, and triethylene glycol dimethacrylate as the resin matrix.