Vegetable Oil Adhesive for Mandibular Prostheses
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Solution Overview
Problem
Existing adhesive preparations for jaw prostheses often cause irritation and rely on paraffin or petroleum jelly, which can lead to raw material shortages and inconsistent adhesion properties, and replacing these with vegetable oils results in suboptimal adhesion and consistency.
Innovation Solution
A novel adhesive preparation using vegetable oils as a base, combined with highly porous silicon dioxide as a filler and polyacrylic acid as an adhesive, achieving a balanced adhesion force and stability without the need for paraffin or petroleum jelly, ensuring a smooth, pleasant, and durable adhesive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If paraffin or petroleum jelly is used as a base substance, then smooth consistency is achieved, but throat irritation occurs and raw material shortages may arise
Solution Approach 1:
The patent replaces expensive, problematic paraffin and petroleum jelly with cheaper, safer vegetable oils that are readily available and do not cause throat irritation. The vegetable oil base (olive oil, sunflower oil, or rapeseed oil) provides the necessary smooth consistency without the harmful effects of petroleum-based substances.
2Object-affected harmful factors
If vegetable oil is used as a base substance, then throat irritation is avoided, but adhesion strength and consistency deteriorate
Solution Approach 1:
The patent creates a composite adhesive system combining vegetable oil base with multiple functional components: polyacrylic acid (1-10 wt.%) for adhesion, carboxymethylcellulose (5-30 wt.%) for consistency and stability, and highly dispersed silica (0.1-5 wt.%) as a filler. This composite formulation achieves both smooth consistency and adhesion strength above 40 Newtons, resolving the contradiction between safety and performance.
Solution Approach 2:
The patent optimizes the concentrations of each component to achieve the desired balance. Specifically, polyacrylic acid at 1-10 wt.%, carboxymethylcellulose at 5-30 wt.%, and silica at 0.1-5 wt.% create the right viscosity and adhesion properties. The total amount of vegetable oil and stabilizer is controlled to be less than 90 wt.% to maintain proper consistency.
3Strength
If adhesive proportion is increased to improve adhesion, then bond strength improves, but consistency and stability deteriorate
Solution Approach 1:
The patent carefully controls the adhesive (polyacrylic acid) concentration at 1-10 wt.%, which is sufficient to achieve adhesion strength above 40 Newtons while maintaining consistency. The stabilizer (carboxnymethylcellulose) at 5-30 wt.% provides the necessary viscosity and structural stability, preventing the adhesive from becoming too thick or unstable. This balanced parameter selection resolves the contradiction between adhesion strength and composition stability.
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 adhesive preparation achieves a high and stable adhesion force above 40 Newtons with optimal consistency, maintaining stability over time and avoiding the risks of excessive adhesion or decomposition, while providing an anti-inflammatory effect and suppleness.
Implementation Method 1
The filler, or at least its main component silicon dioxide (silica), is highly porous. The filler and/or the silicon dioxide has a density of 1.9 to 2.1 g/cm3.
Implementation Method 2
a carbomer (polyacrylic acid) as an adhesive in a proportion of 1 to 15 wt.%
Implementation Method 3
Due to their chemical composition, the use of vegetable oils can provide an anti-inflammatory effect in cases of irritation.
Data Source
Figure 1
AI summary
The invention relates to a vegetable-based adhesive preparation for mandibular prostheses, said preparation having improved adhesive properties, consistency and stability as a result of a filler containing: 35 to 45 wt. % vegetable oil; 25 to 50 wt % structure-forming stabilizer; 5 to 15 wt % bonding agent; and silicon oxide making up the remainder.