Dental Primer Composition for Stable Prosthesis Adhesion

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Solution Overview

Problem

Existing dental primers lack preservation stability and effective adhesiveness enhancement for dental cement, particularly when used with dental prostheses.

Innovation Solution

A dental primer formulation comprising (meth)acrylate with an acid group, vanadium and/or copper compounds, polymerization inhibitor, water, and ethanol solvent, within specific mass content ranges, to enhance adhesiveness and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a dental primer contains (meth)acrylate having an acid group to enhance adhesiveness, then the adhesiveness of dental cement is improved, but the preservation stability deteriorates

Engineering Contradiction:

Improveadhesiveness of dental cementVSAvoidpreservation stability of dental primer

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The patent optimizes the concentration parameters of key components: (meth)acrylate having acid group (15-60 mass%), vanadium compound (0.05-0.5 mass%), and polymerization inhibitor (0.8-3 mass%). By precisely controlling these parameters, the formulation achieves both high adhesiveness and preservation stability, resolving the contradiction between enhanced bonding strength and long-term stability.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite dental primer formulation combining multiple functional components: adhesive (meth)acrylate monomers with acid groups, vanadium compound catalysts, polymerization inhibitors, and water. This composite system synergistically provides both strong adhesion to tooth surfaces and stable preservation characteristics.

Inventive Principle:

Principle #40Composite materials

2Strength

If the content of (meth)acrylate having acid group is increased to improve adhesiveness, then the adhesiveness enhancement is improved, but the uniformity and drying properties deteriorate

Engineering Contradiction:

Improveadhesiveness enhancementVSAvoiduniformity and drying properties

Core Design Contradiction:

StrengthVSStability of the object's composition

Solution Approach 1:

The patent establishes an optimal concentration range for (meth)acrylate having acid group (15-60 mass%) rather than using maximum concentrations. This parameter optimization ensures sufficient adhesiveness while maintaining uniform composition and proper drying characteristics of the primer.

Inventive Principle:

Principle #35Parameter changes

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 formulation provides excellent preservation stability and enhanced adhesiveness of dental cement, allowing for improved adhesion of dental prostheses without requiring additional surface treatments.

Implementation Method 1

a vanadium compound and/or a copper compound

Methodology Applied

Scientific EffectRedox reactions: Redox Reactions

Implementation Method 2

a polymerization inhibitor

Methodology Applied

Scientific EffectInhibition of polymerization: Photopolymerisation

Data Source

PatentEP3381434B1Dental primer and kit for dental prosthesis adhesion

Publication Date: 2026.04.29 GC CORP

AI summary

A dental primer includes: a (meth)acrylate having an acid group; a vanadium compound and/or a copper compound; a polymerization inhibitor; and water. In the dental primer, a content of the (meth)acrylate having the acid group is in a range of from 15% by mass to 60% by mass, a total content of the vanadium compound and the copper compound is in a range of from 0.25% by mass to 0.45% by mass, and a content of the polymerization inhibitor is in a range of from 0.8% by mass to 3% by mass.