Zinc-Loaded Polymer Films for Oral Care
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Solution Overview
Problem
Existing oral and personal care compositions, particularly those containing zinc, face challenges with solubility limitations and consumer astringency, leading to reduced efficacy and acceptance due to limited zinc ion delivery and adverse reactions.
Innovation Solution
A film-based oral care composition with a high concentration of zinc-containing compounds (35-60% by weight) entrained in a carrier, utilizing a polymer matrix with cellulose polymers and colloidal particles, which enhances zinc ion delivery and stability, reducing adverse reactions and improving aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If higher concentrations of zinc-containing compounds are used in the film, then zinc ion delivery and therapeutic efficacy are improved, but consumer astringency and adverse reactions increase
Solution Approach 1:
The patent uses water-soluble polymers and wettability-enhancing compounds as intermediaries to deliver zinc-containing compounds to the oral cavity. These carriers facilitate controlled release of zinc ions, providing therapeutic benefits while reducing direct contact effects that cause astringency. The film matrix acts as a mediator between the zinc compound and the consumer's oral tissues.
Solution Approach 2:
The patent changes the physical and chemical parameters of zinc delivery by incorporating zinc-containing compounds into a water-soluble film matrix. This transformation allows for controlled dissolution and release kinetics, modifying how zinc ions are delivered to achieve higher effective concentrations without the immediate adverse effects associated with direct high-concentration zinc application.
2Quantity of substance
If higher zinc loading is incorporated into the film, then therapeutic benefits are improved, but film stability and chemical degradation resistance worsen
Solution Approach 1:
The patent creates a composite film system combining water-soluble polymers with zinc-containing compounds. This composite structure provides both the therapeutic zinc delivery function and the structural stability needed for film integrity. The polymer matrix protects the zinc compounds from premature degradation while allowing controlled release.
Solution Approach 2:
The patent applies different functional properties to different components of the film system. The water-soluble polymer provides structural stability and controlled dissolution, while the zinc-containing compounds provide therapeutic activity. Each component is optimized for its specific function, allowing high zinc loading without compromising overall film stability.
3Quantity of substance
If more film material is used to deliver effective zinc levels, then zinc ion delivery is improved, but aesthetic appeal and consumer acceptance worsen
Solution Approach 1:
The patent changes the concentration parameter of zinc-containing compounds within the film, achieving high zinc ion delivery through increased loading density rather than increased film quantity. This allows thin, aesthetically pleasing films to deliver effective zinc levels, improving both therapeutic efficacy and consumer acceptance.
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 achieves increased zinc ion delivery, improved stability, and enhanced consumer acceptance by providing controlled release and reduced astringency, allowing for higher zinc loading with lower film amounts, thus improving oral health benefits.
Implementation Method 1
Water-soluble films for oral administration of therapeutic agents are well known in the art
Implementation Method 2
A polymer matrix film comprising one or more cellulose polymers, and colloidal particles
Data Source
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AI summary
Described herein are polymer matrix films, compositions comprising the polymer matrix films, and methods of preparing and using the same.