Curable Dental Retraction Composition Kit
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Solution Overview
Problem
Current dental retraction materials are often high viscosity, making them unsuitable for accurate dental impressions as they cannot reproduce fine tooth surface contours, and require separate materials for retraction and impression processes, which is inefficient and time-consuming.
Innovation Solution
A curable composition comprising a resin matrix, filler system, and catalyst system, specifically designed as a kit of parts with a Catalyst Part and Base Part, allowing easy mixing and application into the sulcus, maintaining openness, and easy removal after curing, with a suitable mixing ratio and composition to ensure precision and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If high viscosity paste is used for dental retraction, then the sulcus can be kept open and withstand surrounding soft tissue forces, but the material cannot reproduce fine contours on the teeth surface
Solution Approach 1:
The invention divides the dental procedure into two separate applications: first applying a high viscosity retraction paste to open and maintain the sulcus, then applying a low viscosity impression material to capture fine tooth contours. This segmentation allows each material to be optimized for its specific function without compromise.
Solution Approach 2:
The invention creates a universal system that addresses both retraction and impression needs through coordinated use of two materials with complementary properties. The retraction paste provides mechanical support while the impression material captures detail, together achieving both strength and precision requirements.
2Reliability
If separate materials are used for retraction and impression processes, then each function can be optimized, but the overall process becomes time-consuming and complex
Solution Approach 1:
The invention enables continuous workflow by having the retraction paste remain in place to maintain sulcus opening while the impression material is subsequently applied. This eliminates the need to remove retraction material between steps, maintaining continuous useful action throughout the procedure.
Solution Approach 2:
The retraction paste is applied in advance and maintained throughout the impression process, performing preliminary retraction action that prepares and sustains the optimal condition for subsequent impression taking, thereby streamlining the overall 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 composition effectively keeps the sulcus open, allows for precise dental impression, and is easy to apply and remove, addressing the limitations of existing materials by providing a single solution for both retraction and impression processes with improved accuracy and efficiency.
Implementation Method 1
The curable composition comprises a resin matrix, a filler system and a catalyst system, wherein the catalyst system comprises two different kinds of catalysts
Data Source
AI summary
The invention relates to a curable composition for dental retraction comprising a resin matrix comprising at least one polyorganosiloxane with at least two olefinically unsaturated groups as component A1, at least one organohydrogenpolysiloxane as component A2, optionally at least one vinyl functional QM silicone component as component A3, at least one alkylsiloxane having at least one carbinol, silanol, or alkoxy moiety as component B, optionally surfactant(s) as component E, optionally additive(s) as component F, a filler system comprising filler(s) as component D, a catalyst system comprising addition cure catalyst component C-A suitable to cure components A1 and A2, condensation cure catalyst component C-B suitable to cure component B, the curable composition being provided as a kit of part comprising a Catalyst Part I and a Base Part II the Catalyst Part I comprising components C-A, C-B, A1, the Base Part II comprising components A2, A1, B, wherein each of components D, E and F and A3, if present, can be present either in the Catalyst Part I or the Base Part II or the Catalyst Part I and the Base Part II, and wherein component B is present in an amount of 6 wt. % or more with respect to the whole composition.