One-Liquid Dental Adhesive Composition for Ceramics and Tooth
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Solution Overview
Problem
Existing dental adhesive compositions are either two-liquid types that complicate adhesive operations or have insufficient storage stability and lack adhesion to tooth substance.
Innovation Solution
A one liquid type dental adhesive composition containing a silane coupling agent, an acidic group-containing polymerizable monomer, a volatile organic solvent, and water, which provides excellent adhesion to glass ceramics, oxide-base ceramics, and tooth substance while maintaining storage stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a two-liquid type dental adhesive composition is used to achieve good adhesive strength to glass ceramics and oxide-based ceramics, then adhesive property is improved, but adhesive operation becomes complicated
Solution Approach 1:
The patent combines the silane coupling agent and acidic group-containing polymerizable monomer into a single liquid type composition, eliminating the need for separate packaging and mixing steps. This merging of previously separate components simplifies the adhesive operation while maintaining the adhesive strength through the synergistic interaction of the silane coupling agent with glass ceramics and oxide-based ceramics, and the acidic group-containing monomer with tooth substance.
2Ease of operation
If a one liquid type dental adhesive composition is used to simplify adhesive operation, then ease of operation is improved, but storage stability becomes insufficient
Solution Approach 1:
The patent optimizes the compositional parameters of the one liquid type formulation, specifically controlling the types and amounts of silane coupling agent, acidic group-containing polymerizable monomer, volatile organic solvent, and water. By carefully adjusting these parameters, the composition achieves both simplified operation and improved storage stability, resolving the contradiction between ease of use and compositional stability.
3Strength
If a dental adhesive composition is used to achieve adhesive property to glass ceramics and oxide-base ceramics, then adhesive property is improved, but adhesion to tooth substance is insufficient
Solution Approach 1:
The patent creates a universal adhesive composition that can bond to multiple substrates including glass ceramics, oxide-based ceramics, and tooth substance. The silane coupling agent provides adhesion to ceramic materials through silane bonding, while the acidic group-containing polymerizable monomer enables adhesion to tooth substance through chemical interaction with calcium in the tooth structure. This multi-functional design allows a single composition to effectively bond to diverse dental materials and biological tissues.
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 one liquid type dental adhesive composition achieves excellent adhesive properties and storage stability, simplifying the adhesive operation and ensuring strong bonding to various dental materials and tooth substance.
Implementation Method 1
a silane coupling agent and an acidic group-containing polymerizable monomer has been proposed
Implementation Method 2
an acidic group-containing polymerizable monomer has been proposed
Implementation Method 3
a volatile organic solvent
Data Source
AI summary
To provide one liquid type dental adhesive composition that exhibits excellent adhesive property to glass ceramics, oxide-base ceramics and tooth substance, and has excellent storage stability, which are contrary features. One liquid type dental adhesive composition contains (a) silane coupling agent represented by general formula (1), (b) acidic group-containing polymerizable monomer, (c) volatile organic solvent, and (d) water. (In the formula, R1 represents an organic group having at least one functional group selected from the group consisting of a (meth)acryloyl group, a vinyl group and an epoxy group, R2 represents C4-C8 linear alkyl group, R3 represents C1-C8 alkyl group, and n is integer selected from 1 to 3.)