Metal Closed-Loop Orthodontic Device for Consistent Lateral Tooth Movement
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Solution Overview
Problem
Existing orthodontic methods using elastomeric chains apply high initial forces that rapidly decrease, requiring frequent replacements and are prone to bacterial plaque accumulation, leading to discomfort and slower tooth movement.
Innovation Solution
An orthodontic device featuring a closed loop made of a metal wire with elastic properties, such as nitinol, that applies a consistent and continuous force for tooth movement, reducing the need for frequent adjustments and minimizing plaque buildup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If elastomeric chains are used to close spacing between teeth, then initial force application is high, but force level decreases rapidly requiring frequent replacement
Solution Approach 1:
The patent changes the material parameter from elastomeric to metal alloy with shape memory properties, and changes the force delivery parameter from rapid decay to sustained constant force over extended periods. The metal alloy's superelasticity and shape memory effects enable maintained force levels without frequent replacement.
Solution Approach 2:
The metal alloy chain utilizes its inherent shape memory and superelastic properties to automatically maintain force levels without requiring external intervention or replacement. The material self-regulates its force output through phase transformation mechanisms, eliminating the need for frequent orthodontist visits.
2Productivity
If elastomeric chains are used to close spacing between teeth, then force is applied to move teeth, but heavy inconsistent forces increase patient discomfort and slow tooth movement
Solution Approach 1:
The patent changes the force parameter from heavy and inconsistent to light and continuous through the use of metal alloy materials with controlled superelasticity. This enables optimal tooth movement forces that are consistently applied without causing patient discomfort or root damage.
3Productivity
If elastomeric chains are used to close spacing between teeth, then space closing is achieved, but porous material allows bacterial plaque accumulation increasing enamel damage risk
Solution Approach 1:
The patent changes the material parameter from porous elastomeric to non-porous metal alloy, eliminating the surface porosity that allows bacterial plaque accumulation. The smooth metal surface resists plaque adhesion while maintaining the space-closing function through controlled elastic deformation.
4Reliability
If elastomeric chains require frequent replacement to maintain force levels, then force can be reapplied to continue tooth movement, but patient must return to orthodontist frequently increasing treatment time
Solution Approach 1:
The metal alloy chain automatically maintains its force-generating properties through its shape memory and superelastic characteristics, eliminating the need for frequent professional intervention. The device serves itself by continuously providing reliable force without degradation that would require replacement.
Solution Approach 2:
The patent ensures continuous force application over extended periods through the metal alloy's sustained elastic properties. The force is applied continuously without interruption or degradation, eliminating treatment gaps that occur with frequent replacement of traditional elastomeric chains.
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 provides a steady, comfortable force for tooth alignment, minimizing patient visits and promoting better oral hygiene by resisting plaque formation.
Implementation Method 1
a closed loop made of a metal wire with elastic properties, such as nitinol, that applies a consistent and continuous force for tooth movement
Implementation Method 2
a metal wire with elastic properties, such as nitinol
Data Source
AI summary
An orthodontic system having a plurality of orthodontic brackets, an archwire, and a closed loop formed from a metal wire having elastic properties. The brackets include first and second brackets attached to first and second teeth in an upper jaw or a lower jaw. The archwire is arranged around the jaw and coupled to the first and second brackets. The loop has first and second ends and a plurality of lobe pairs, each including an upper lobe and a lower lobe, arranged between the first and second ends. The first end of the loop is hooked around the first bracket. The second end of the loop is stretched and hooked around the second bracket, placing the loop in tension between the first and second brackets. Each successive lobe pair of the plurality of lobe pairs defines a loop segment that is positioned around a successive bracket along the first jaw.