Orthodontic Aligner Fit Assessment Using Color-Changing Intermediary Material
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Solution Overview
Problem
Conventional methods for monitoring the fit of orthodontic aligners rely on visual examination by trained professionals, which is inefficient and difficult for patients to self-assess, especially in remote settings.
Innovation Solution
A method using a nontoxic, colored plastic material that changes opacity and color based on the fit of the aligner with teeth, allowing patients to visually assess the fit by comparing the material's color intensity, with a color chart for precise evaluation, and optionally using cotton rolls or Chewies to improve alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual examination by trained orthodontist is used to monitor aligner fit, then measurement precision is improved, but device complexity and ease of operation worsen for patient self-assessment
Solution Approach 1:
A colored material is introduced as an intermediary substance between the aligner and teeth. This material visually indicates fit quality through color intensity variations, enabling patients to self-assess without requiring professional training while maintaining measurement precision through objective color-based feedback.
Solution Approach 2:
The patent utilizes color changes in a material disposed between the aligner and teeth to indicate fit quality. The material appears darker and more opaque where fit is poorest, and lighter and more translucent where fit is better, providing visual feedback that enables patient self-assessment with precision comparable to professional evaluation.
2Measurement precision
If professional visual examination is used for monitoring, then measurement precision is improved, but loss of time increases due to frequent office visits
Solution Approach 1:
The patent enables patients to perform fit assessments themselves using the color-indicating material and comparison chart at home, eliminating the need for frequent office visits. Patients can independently monitor their progress while maintaining accurate measurement through the visual color feedback system.
Solution Approach 2:
The color-changing material provides immediate visual feedback to patients about their aligner fit quality. This feedback mechanism allows patients to self-correct issues using cotton rolls or Chewies and track their progress over time without requiring continuous professional intervention.
3Device complexity
If no visual indicator material is used, then device complexity is reduced, but difficulty of detecting and measuring worsens for patient self-assessment
Solution Approach 1:
The patent introduces a colored material that changes appearance based on the amount present between the aligner and teeth. The material appears darker and more opaque where fit is poorest and lighter and more translucent where fit is better, transforming an invisible fit quality issue into visible color variations that patients can easily detect and measure.
Solution Approach 2:
The patent changes the optical parameters (color intensity and opacity) of a material based on the amount of material present, which correlates to fit quality. This parameter change transforms the难以检测的 fit issue into visually detectable color variations without significantly increasing overall device complexity.
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
Enables patients to effectively self-assess and improve the fit of aligners, reducing the need for frequent professional evaluations and enhancing remote monitoring capabilities, while ensuring accurate documentation of fit quality.
Implementation Method 1
The material disposed into the aligner will appear darker and more opaque where the aligner fit is the poorest, and very light colored and translucent where the fit is better
Data Source
AI summary
A method of monitoring the degree of fit of an aligner among a series of aligners includes the steps of selecting an aligner in the series of aligners whose fit to a patient's teeth are to be tested to determine its fit with the selected aligner; disposing a nontoxic colored plastic material into the selected aligner; setting the patient's teeth into the selected aligner containing the material; and determining the amount of material disposed onto the interior aligner's surfaces by visual inspection by assessment of the material disposed therein, a good fit being indicated by a minimum of material extruded onto almost all of the interior aligner surfaces and by a light color, and a poor fit being indicated by an excess of material extruded onto one or more locations of the aligner interior surfaces and a dark color.