Orthodontic Protection Device with Hygroscopic Adhesive
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Solution Overview
Problem
Existing orthodontic protection devices face challenges such as poor adhesion to moist orthodontic braces, inconvenient application procedures, and difficulty in achieving proper adhesion due to the moist environment of the mouth, leading to frequent dislodgment and inadequate protection against demineralization.
Innovation Solution
A moldable orthodontic protection device featuring a thixotropic semi-solid material with a hygroscopic polymeric adhesive layer, which is dehydrated to enhance adhesion and packaged with a moisture barrier for hygienic use, allowing for easy application and retention on orthodontic appliances despite saliva presence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a thixotropic semisolid silicone material is used for orthodontic protection, then the material can be easily molded onto braces, but it adheres poorly to moist orthodontic appliances and easily dislodges
Solution Approach 1:
The patent combines a thixotropic semisolid silicone base material with a hygroscopic polymeric adhesive layer to create a composite protective device. The silicone provides moldability and protection, while the hygroscopic polymer layer absorbs saliva moisture and creates strong adhesion to the orthodontic appliance, resolving the contradiction between ease of molding and reliable adhesion in a moist environment.
Solution Approach 2:
The patent changes the physical and chemical parameters of the adhesive layer by using a hygroscopic polymeric material that undergoes hydration when exposed to saliva. This parameter change (from dry to hydrated state) triggers strong adhesion to the orthodontic appliance, allowing the material to maintain both moldability and reliable adhesion under moist conditions.
2Reliability
If the braces are kept dry for optimal adhesion, then the silicone material adheres properly, but this is difficult to achieve in the moist environment of the mouth without professional assistance
Solution Approach 1:
The patent converts the harmful effect of saliva moisture (which causes dislodgment of conventional silicone wax) into a beneficial effect. The hygroscopic polymeric adhesive layer is designed to absorb the saliva moisture and utilize it to create strong adhesion bonds, thereby converting the problematic moist environment into a condition that enhances rather than harms adhesion.
Solution Approach 2:
The hygroscopic polymeric adhesive layer acts as an intermediary between the silicone protective material and the orthodontic appliance. This intermediate layer manages the moisture interface by absorbing saliva and creating optimal bonding conditions, eliminating the need to keep the braces dry for proper adhesion.
3Ease of operation
If the silicone material sticks aggressively to dry fingers, then it can be easily handled during application, but it pulls off the braces during attempted application when braces are wet
Solution Approach 1:
The patent applies different properties to different parts of the protective device: the main body remains as thixotropic semisolid silicone for moldability and protection, while the facial surface (the part contacting the appliance) is covered with a hygroscopic polymeric adhesive layer. This local differentiation allows the material to stick to fingers during handling while ensuring strong retention on the wet orthodontic appliance during application.
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 device effectively adheres to both dry and wet orthodontic appliances, reducing the risk of dislodgment and providing enhanced protection against soft tissue injury and demineralization, while being easy to apply and use in a hygienic manner.
Implementation Method 1
an adhesive layer including at least one hygroscopic polymeric material on a facial surface of the protective layer
Implementation Method 2
which is dehydrated to enhance adhesion
Data Source
AI summary
An orthodontic protection device including: a protective layer shaped sized to fit over the facial surface of at least one tooth of a human and any orthodontic appliances affixed to the facial surfaces of the at least one tooth, wherein the protective layer includes a moldable material; and an adhesive layer including at least one hygroscopic polymeric material on a facial surface of the protective layer.