Orthodontic Bracket Charge Hole Adhesion Design
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Solution Overview
Problem
Conventional dental braces require complex manufacturing processes and expensive equipment for adhesion enhancement, leading to increased product costs and discomfort during fitting, due to the need for undercuts, separate adhesive layers, and photopolymerization adhesives.
Innovation Solution
A dental brace design featuring a bracket main body with a concave archwire insertion groove, an opening/closing lid portion, and a tooth abutting plate with charge hole portions that allow for simple adhesive application and curing, providing enhanced adhesion strength without the need for additional adhesive layers or specialized equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If an undercut is formed in the tooth abutting surface to increase adhesion strength, then the holding force of the adhesive is enhanced, but the operation process becomes significantly complicated and manufacturing cost increases
Solution Approach 1:
The invention transitions from a two-dimensional surface modification (undercut on the surface) to a three-dimensional volume utilization (charge hole penetrating through the bracket). The charge hole provides a volumetric space for adhesive accumulation, effectively increasing the adhesion area without complicating surface processing operations.
Solution Approach 2:
The charge hole is pre-formed in the bracket structure before bonding, allowing the adhesive to be directed and accumulated in a predetermined location. This preliminary preparation simplifies the bonding process by ensuring proper adhesive distribution and eliminates the need for complex surface undercuts to achieve the same effect.
2Strength
If a mesh layer is formed as a separate member to enhance adhesion force, then the adhesive holding layer is improved, but the number of manufacturing steps increases due to the need for attaching the mesh layer to the dental brace
Solution Approach 1:
The invention merges the adhesive accumulation function and the structural support function into a single integrated component (the bracket with charge hole). Instead of using a separate mesh layer that needs to be attached, the charge hole in the bracket itself serves as the adhesive holding structure, eliminating the need for additional layers and their associated assembly steps.
3Strength
If photopolymerization adhesive is used to cure the adhesive in the mesh layer, then the adhesion is enhanced, but expensive equipment such as light application unit is required which increases cost and reduces ease of practice
Solution Approach 1:
The invention favors the use of conventional adhesive materials and curing methods that are already widely available in dental practices, rather than requiring specialized photopolymerization systems. This approach uses readily accessible, cost-effective materials and equipment that dentists are already familiar with, reducing the need for expensive specialized equipment.
4Ease of operation
If the size of the dental brace is kept small, then the comfort during fitting is improved, but advanced and precise operation is required for processing which increases manufacturing complexity
Solution Approach 1:
The invention divides the bracket into functional segments (body, charge hole, and bonding surface) that can be manufactured separately and then assembled. This segmentation allows each component to be produced using standard manufacturing processes without requiring ultra-precise operations on the entire small-scale bracket, thereby maintaining comfort while simplifying manufacturing.
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3(a)~3(b)
AI summary
[Object] An object is to provide dental braces in which sufficient adhesion strength can be maintained by simple processing within the oral cavity of a person to be treated for a long time and with which it is possible to reduce an uncomfortable feeling when the dental braces are fitted. [Solution Means] A dental brace 1a is mainly formed with a bracket main body portion 2a, an opening/closing lid portion 3a and a tooth abutting plate portion 4a. The tooth abutting plate portion 4a includes, on one surface side, a first surface portion 41 which abuts on the surface of a tooth T on the side of a tongue and includes, on a side opposite to the first surface portion 41, a second surface portion 42 to which the bracket main body portion 2b is adhered, and a charge hole portion 44 is formed which penetrates from the first surface portion 41 to the second surface portion 42. The charge hole portion 44 is formed such that the diameter of an inner wall surface on the side of the second surface portion 42 is wider than the diameter of the inner wall surface on the side of the first surface portion 41, and thus an adhesive R applied to the first surface portion 41 enters the charge hole portion 44 so as to be cured, with the result that the adhesive R functions as a member for preventing the tooth abutting plate portion 4a from being removed in the direction of the side of the tongue.