Dual-Container Calcium Silicate Cement Delivery for Consistent Hardening
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Solution Overview
Problem
Existing dental compositions, such as calcium silicate-based cements, require separate packaging and manual mixing, which is time-consuming and user-dependent, and the hydration process is affected by variability in water content, leading to inconsistent hardening.
Innovation Solution
A kit of parts comprising a waterproof container with anhydrous calcium silicate semi-solid and an aqueous container with a set accelerator, designed for easy mixing and delivery of a self-hardening calcium silicate-based cement using an injection system, ensuring consistent hardening and reduced setting time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If separate packaging of calcium silicate powder and aqueous liquid is used, then storage stability is improved, but mixing time and operational complexity increase
Solution Approach 1:
The system divides the calcium silicate cement into two separate containers: one containing the powder phase and another containing the aqueous liquid phase. This segmentation allows stable storage of each component separately while enabling rapid mixing when needed, resolving the contradiction between storage stability and mixing time.
Solution Approach 2:
The aqueous liquid phase is pre-mixed with accelerator agents and other additives before storage. This preliminary preparation ensures that when the components are mixed, the setting process is immediately activated and optimized, reducing the overall mixing and setting time while maintaining storage stability during separate packaging.
2Device complexity
If manual mixing is required, then device complexity is reduced, but operational consistency and precision deteriorate
Solution Approach 1:
The system enables self-mixing through a simple pump mechanism that automatically delivers the correct proportions of powder and aqueous liquid phases. The user simply activates the pump, and the system handles the mixing process itself, ensuring consistent results without complex manual procedures or advanced mixing devices.
Solution Approach 2:
The manual mechanical mixing process is replaced with an automated pump-based delivery system. The pump mechanically delivers the aqueous liquid phase to the powder phase in controlled amounts, eliminating the need for manual mixing techniques and ensuring consistent, reproducible mixing results.
3Ease of operation
If water content is not controlled, then ease of operation is improved, but hardening consistency and reliability deteriorate
Solution Approach 1:
The system controls the water content parameter by formulating the aqueous liquid phase with specific concentrations of water, accelerator agents, and other additives. This parameter control ensures consistent hardening results while maintaining ease of operation, as the user simply needs to activate the pump without managing water content manually.
Solution Approach 2:
The system incorporates accelerator agents in the aqueous liquid phase that provide feedback control for the hardening process. These agents monitor and regulate the setting time and hardening progression, ensuring consistent results while keeping the operation simple for the user.
4Ease of operation
If setting time is extended, then material handling is improved, but productivity and efficiency deteriorate
Solution Approach 1:
The system uses accelerator agents in the aqueous liquid phase that act as chemical catalysts to speed up the hardening process. These accelerators strengthen the chemical reaction between the powder and liquid phases, reducing setting time while maintaining good material handling properties during the brief mixing window.
Solution Approach 2:
The system optimizes the parameter of setting time by controlling the composition and concentration of the aqueous liquid phase. By adjusting the water content, accelerator agent concentration, and other parameters, the system achieves rapid hardening without compromising material handling capabilities during the mixing and placement process.
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 system allows for ready-to-use, efficient delivery of a calcium silicate-based cement with controlled consistency, reducing setting time and improving user convenience while maintaining mechanical properties.
Implementation Method 1
the hardening process resulting from the hydration of calcium silicate particles
Data Source
AI summary
Delivery and/or injection systems, preferably for medical applications. Especially, a kit of parts for providing a dental composition able to self-hardening. The kit of parts includes a first waterproof container including an anhydrous calcium silicate phase; and a second container including an aqueous phase. The kit of parts may be used in delivery and/or injection systems so that it delivers a homogenous calcium silicate-based composition having a volume ratio between the calcium silicate phase and the aqueous phase ranging from 1 to 3. Also, the hardened material obtained from the kits of parts, the delivery and/or injection system.