PVA Hydrogel Chlorhexidine Delivery for Oral Tissues
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Solution Overview
Problem
Current treatments for gum diseases like gingivitis and periodontitis, such as chlorhexidine rinses, face challenges including low bioavailability due to first-pass metabolism, erratic absorption, and adverse effects like bitter taste, which reduce patient compliance and effectiveness.
Innovation Solution
Development of new hydrogel compositions loaded with chlorhexidine, incorporating polyvinyl alcohol (PVA) and humectants like glycerol, designed to maintain a moist environment and be attached to oral appliances with minimal leakage, providing targeted and sustained delivery to oral tissues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chlorhexidine rinse is used to treat gum disease, then antimicrobial effect is achieved, but patient compliance deteriorates due to bitter taste and adverse effects
Solution Approach 1:
The patent uses a hydrogel matrix as an intermediary carrier to deliver chlorhexidine. The hydrogel encapsulates the medicament, controlling its release while reducing direct contact with oral tissues, thereby maintaining antimicrobial efficacy while minimizing bitter taste and irritation that cause poor compliance
Solution Approach 2:
The patent modifies the physical and chemical parameters of chlorhexidine delivery by incorporating it into a hydrogel system. This changes the release profile from immediate to sustained, maintains effective concentration at the target site while reducing peak concentrations that cause adverse effects, thereby improving both effectiveness and compliance
2Reliability
If oral dosage forms are designed for GI delivery, then systemic treatment is achieved, but absorption efficiency deteriorates due to first-pass metabolism
Solution Approach 1:
The patent extracts the medicament delivery route from the conventional gastrointestinal path and redirects it to the oral cavity's gingival tissues. By using a hydrogel applied topically to the gums, the system bypasses the digestive tract and first-pass metabolism in the liver, enabling systemic treatment while preserving medicament bioavailability
Solution Approach 2:
The hydrogel serves as an intermediary delivery system that enables alternative absorption through oral mucosal tissues. This intermediary approach allows the medicament to enter the bloodstream directly through the gingiva, avoiding the gastrointestinal metabolism pathway while still achieving systemic distribution
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 hydrogel compositions enhance bioavailability and compliance by maintaining a moist environment, reducing irritation, and providing sustained antimicrobial action, thereby improving wound healing and treatment efficacy for oral and systemic conditions.
Implementation Method 1
incorporating polyvinyl alcohol (PVA) and humectants like glycerol, designed to maintain a moist environment
Implementation Method 2
providing targeted and sustained delivery to oral tissues
Data Source
AI summary
A composition for treating an oral cavity in a patient in need is provided. The composition comprising a medicament, a polyvinyl alcohol (PVA), and optionally a humectant, the medicament in an amount of about 0.001% w/w, v/v or w/v to about 5% w/w, v/v or w/v, the polyvinyl alcohol in an amount of about 5% w/w, v/v or w/v to about 99% w/w, v/v or w/v, the humectant in an amount of about 0.5% w/w, v/v or w/v to about 15% w/w, v/v or w/v based on a total w/w, v/v or w/v of the composition. A method of making a composition for treating an oral cavity in a patient in need is also provided.