Single Paste Dental Filler via Moisture Absorption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional root canal fillers face challenges such as potential tooth fracture during application, complex root canal shapes requiring secure sealing, and materials with low biocompatibility or poor physical properties, especially in humid environments, and existing MTA cement products have limited usability due to mixing requirements and poor flowability.
Innovation Solution
A single paste type hydraulic dental filling composition comprising Pozzolan cement, non-aqueous hygroscopic liquid, radiopaque material, and hygroscopic clay, which hardens by absorbing moisture from ambient air or tissue fluids, eliminating the need for mixing and application of heat or pressure, and ensuring biocompatibility and effective sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional root canal fillers (gutta percha and sealers) are used with lateral or vertical condensation techniques, then the root canal can be filled, but the root canal may be fractured or damaged due to applied pressure
Solution Approach 1:
The patent replaces the mechanical condensation system (spreader tools, plugger tools, and manual pressure application) with a chemical setting system. The hydraulic cement composition sets through chemical reaction with moisture, eliminating the need for mechanical compression that could fracture the root canal. The material is injected and sets in place without requiring lateral or vertical condensation techniques.
2Reliability
If MTA cement is used for retrograde filling, then biocompatibility and sealing properties are improved, but usability deteriorates due to mixing requirements and poor flowability
Solution Approach 1:
The patent combines the hydraulic cement powder and non-aqueous liquid components into a single pre-mixed paste formulation. This merging of components eliminates the need for separate mixing steps while maintaining the hydraulic setting properties and sealing capabilities of MTA cement. The single paste can be directly injected into the root canal without additional preparation.
Solution Approach 2:
The patent modifies the physical parameters of the cement by using a non-aqueous liquid vehicle instead of traditional aqueous mixtures. This parameter change improves flowability and ease of injection while the hydraulic cement components maintain the sealing properties. The paste has optimized viscosity for direct injection without requiring mixing or heat/pressure application.
3Reliability
If hydraulic cement is used that hardens with water, then sealing properties are improved in humid environments, but application becomes complex requiring mixing and controlled humidity
Solution Approach 1:
The patent enables the hydraulic cement to self-set by absorbing moisture from the ambient environment or tissue fluids within the root canal. The material does not require external mixing, heat application, or controlled humidity environments. It automatically hardens through contact with moisture present in the treatment site, simplifying the application process while maintaining excellent sealing properties.
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 provides quick hardening, enhanced biocompatibility, and secure three-dimensional sealing of root canals without additional processing, ensuring safety and effective sealing in both dry and humid conditions.
Implementation Method 1
non-aqueous liquid having hygroscopic properties; characterized in that the content of the radiopaque material is 20 to 55 wt% with respect to the entire composition, and wherein the single paste type hydraulic dental filling composition further comprises hygroscopic clay
Data Source
Figure 1
AI summary
According to one aspect of the present invention, there is provided a single paste type hydraulic dental filling composition, comprising: hydraulic cement; non-aqueous liquid having hygroscopic properties; and a radiopaque material.