Diluted Hydrofluoric Acid Composition for Dental Erosion Inhibition
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Solution Overview
Problem
Conventional fluoride methods are ineffective in preventing dental erosions caused by acidic beverages and stomach acids, as they do not reduce solubility effectively at pH levels below 4.5, where dental erosions occur.
Innovation Solution
A composition using diluted hydrofluoric acid in concentrations of 0.05%-2.00% with a pH between 2.5 and 4.5, combined with humectants, binders, thickening agents, abrasive agents, and surfactants, to reduce the solubility of teeth against erosive acids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fluoride methods are used, then dental caries prevention is achieved through re-mineralization at pH above 4.5, but they are ineffective against dental erosions caused by acids at pH levels below 4.5
Solution Approach 1:
The patent changes the pH parameter of the fluoride composition from conventional neutral or basic pH to acidic pH (2.5-4.5), enabling the composition to effectively reduce enamel solubility in the low pH environment where dental erosions occur, while maintaining fluoride's protective function
Solution Approach 2:
The patent creates a composite protective layer on the enamel surface consisting of calcium fluoride and other minerals formed through the interaction of acidic fluoride solution with tooth minerals, providing enhanced protection against erosion compared to conventional fluoride methods
2Reliability
If fluoride concentration is increased to improve caries prevention, then re-mineralization efficacy increases, but the composition becomes less stable and more harmful at low pH levels
Solution Approach 1:
The patent optimizes the fluoride concentration to 0.05%-2.00% and adjusts the pH to 2.5-4.5, creating a parameter combination that provides sufficient fluoride for protection while maintaining composition stability and reducing toxicity at low pH levels
Solution Approach 2:
The patent uses citric acid as an intermediary substance to provide the acidic pH environment needed for erosion protection while being less harmful than strong acids, and it forms a protective film that mediates between the fluoride ions and the enamel surface
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 significantly reduces the solubility of dental enamel, dentine, and cementum by forming a protective calcium fluoride-like layer, offering protection against severe dental erosions even after brief exposure to erosive acids.
Implementation Method 1
forming a protective calcium fluoride-like layer
Implementation Method 2
reduces their solubility to up to 90%
Data Source
AI summary
The present invention relates to a composition, for inhibiting dental erosion, and the use thereof. The composition comprises an aqueous solution of hydrofluoric acid, in which the concentration of hydrofluoric acid is 0.05%-2.00% and the pH is between 2.5 and 4.5.