One-Pack Dental Adhesive Composition with Silane and Acid Monomers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current dental adhesive compositions require mixing of silane coupling agents and acid monomers immediately before use due to storage stability issues and lack of universal adhesion to various dental materials, necessitating selection based on the adherend material.
Innovation Solution
A one-pack dental adhesive composition combining a silane coupling agent, an acidic group-containing polymerizable monomer, and a sulfur atom-containing polymerizable monomer in a single solution, which includes a phosphonic acid group-containing (meth)acrylate-based monomer and a (meth)acrylate ester derivative with a disulfide cyclic group, along with a volatile organic solvent, to provide excellent adhesion to dental ceramics, organic composites, noble metals, and non-noble metals without the need for pre-mixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If silane coupling agent and acid monomer are stored in the same solvent for long period, then storage stability deteriorates, but mixing immediately before use increases operation complexity and time loss
Solution Approach 1:
The adhesive composition is divided into two separate packs: Pack A containing silane coupling agent and Pack B containing acid monomer. This segmentation prevents direct contact between incompatible components during storage, maintaining stability while allowing simple mixing before use. The segmented structure resolves the contradiction by isolating reactive components until the moment of application.
Solution Approach 2:
The silane coupling agent and acid monomer are prepared in advance in separate containers with optimized concentrations and formulations. This preliminary preparation ensures that each component is ready for use without requiring complex mixing procedures, reducing operation time while maintaining storage stability. The pre-prepared state eliminates the need for on-site formulation adjustments.
2Reliability
If different adhesive materials are selected based on adherend material type, then adhesion performance improves, but device complexity and selection difficulty increase
Solution Approach 1:
The adhesive composition is designed with dual functionality: silane coupling agent for silica-based materials (dental ceramics, porcelain) and acid monomer for metal substrates (noble and non-noble metals). This multi-functional formulation eliminates the need for separate adhesive products for different materials, simplifying selection while maintaining optimal adhesion performance across diverse dental substrates.
Solution Approach 2:
The adhesive combines silane coupling agent and acid monomer in a single formulation, creating a composite adhesive system that integrates multiple bonding mechanisms. This composite approach enables universal application to both ceramic and metal dental materials, reducing the number of required adhesive products while ensuring reliable adhesion through synergistic chemical interactions.
3Reliability
If surface treatment (tin plating or oxidation) is applied to noble metals, then adhesion to noble metal improves, but process complexity increases
Solution Approach 1:
The complex surface treatment steps (tin plating or oxidation) are extracted and replaced by a simplified acid monomer-based adhesive system. The acid monomer directly bonds to the noble metal surface without requiring preliminary surface modification, eliminating multiple treatment steps while maintaining strong adhesion. This extraction of unnecessary intermediate steps reduces process complexity significantly.
Solution Approach 2:
The acid monomer acts as an intermediary bonding agent between the noble metal surface and the restorative material. Instead of modifying the metal surface through plating or oxidation, the acid monomer directly interacts with the metal surface and provides bonding functionality, serving as a simplified mediator that eliminates complex surface treatment processes.
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 composition exhibits excellent adhesion and durability to a wide range of dental materials, including silica-based, alumina-based, and zirconia-based materials, with improved storage stability and simplified application, reducing operation time and technical errors.
Implementation Method 1
the silane coupling agents improve adhesion to materials having silicon dioxide as a main component
Implementation Method 2
The acid monomers improve adhesion to materials having alumina or zirconia as a main component
Implementation Method 3
a disulfide cyclic group-containing compound has a high adhesive force to noble metal
Data Source
AI summary
An object of the present invention is to provide a one-pack type dental adhesive composition which can exhibit excellent adhesion to any material, for example, dental ceramics, organic composites containing inorganic compounds, dental noble metals and dental non-noble metals, and also has excellent storage stability.Disclosed is a one-pack type dental adhesive composition comprising a silane coupling agent as a component (a), an acidic group-containing polymerizable monomer as a component (b), a sulfur atom-containing polymerizable monomer as a component (d), and other components.