Calcium Silicate Cement Delivery Kit for Consistent Self-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 water content variability, 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, allowing for pre-mixed delivery of a self-hardening calcium silicate cement through 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 anhydrous calcium silicate powder 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-prepared with all necessary components (water, set accelerator, radiopacifier) in a controlled manner before use. This preliminary preparation ensures that when mixing occurs, the composition achieves optimal hardening properties without requiring additional adjustments, thus reducing mixing time while maintaining stability.
2Device complexity
If manual mixing is required, then device complexity is reduced, but hardening consistency and reliability deteriorate
Solution Approach 1:
The system enables self-mixing through a simple mechanical action (pressing a plunger) that automatically mixes the two phases in a controlled manner. This eliminates the need for complex mixing devices while ensuring consistent hardening results through standardized mixing parameters, resolving the contradiction between device complexity and hardening consistency.
3Ease of operation
If water content is not controlled, then ease of operation is improved, but hardening reliability and setting time consistency deteriorate
Solution Approach 1:
The aqueous liquid phase is formulated with precise control over water content, set accelerator concentration, and radiopacifier amount. By optimizing these parameters in advance, the system achieves consistent hardening results while maintaining ease of operation, as the practitioner simply needs to mix the pre-formulated phases without adjusting water content or other critical parameters.
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 provides a ready-to-use, self-hardening dental cement with controlled consistency for easy injection, reducing setting time and minimizing user-dependent variability in hardening 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.