Orthodontic Appliance Sensor Monitoring Tooth Movement

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Solution Overview

Problem

Current orthodontic appliances often experience discrepancies between planned and actual forces applied to teeth, leading to incomplete or undesirable tooth movements, necessitating improved monitoring approaches to ensure effective treatment.

Innovation Solution

The development of orthodontic apparatuses equipped with sensors to generate data on tooth movement and force application, processed by a processor to assess appliance performance and adjust treatment plans, enabling adaptive closed-loop treatment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If orthodontic appliances are used to reposition teeth, then tooth movement is achieved, but discrepancies between planned and actual forces lead to incomplete or undesirable tooth movements

Engineering Contradiction:
Improvetooth repositioning accuracyVSAvoidforce application consistency
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

The patent implements a feedback mechanism by incorporating sensors that continuously monitor the actual forces applied to teeth and the resulting tooth movements. This sensor data is transmitted to a remote device where it is compared against the planned treatment parameters, enabling real-time feedback to both the system and the practitioner to correct deviations from the treatment plan.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces traditional mechanical force application systems with a smart system that uses sensors, wireless communication, and computational analysis. Instead of relying solely on mechanical appliance design to deliver precise forces, the system uses electronic sensing and digital processing to monitor and verify force application, substituting mechanical precision requirements with electronic measurement and control.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If sensors are integrated into orthodontic appliances to monitor tooth movement, then treatment progress can be assessed, but device complexity increases

Engineering Contradiction:
Improvetooth movement monitoring accuracyVSAvoidappliance structure complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent divides the monitoring system into separate functional modules: sensors integrated into the appliance for local measurement, a wireless communication module for data transmission, and a remote processing system for analysis. This segmentation allows the appliance itself to remain relatively simple while distributing the complexity across multiple components that can be optimized independently.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces a wireless communication system as an intermediary between the sensors in the appliance and the remote processing device. This intermediary enables data transmission without requiring complex wired connections or increasing the mechanical complexity of the appliance structure, allowing precise measurement while maintaining appliance simplicity.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Adaptability or versatility

If real-time monitoring of orthodontic appliance performance is implemented, then treatment plans can be adjusted, but data processing requirements increase

Engineering Contradiction:
Improvetreatment plan flexibilityVSAvoiddata processing automation level
Core Design Contradiction:
Adaptability or versatilityVSExtent of automation

Solution Approach 1:

The system implements feedback by automatically comparing sensor data against the planned treatment parameters and generating alerts or notifications when deviations are detected. This automated feedback loop enables practitioners to adjust treatment plans based on objective data without requiring manual analysis of all sensor data, balancing adaptability with practical data processing requirements.

Inventive Principle:
Principle #23Feedback

Data Source

PatentEP3988048B1Orthodontic appliance performance monitor
Publication Date: 2024.01.17 ALIGN TECHNOLOGY INC
  • EP3988048B1 patent drawingFigure 1A
  • EP3988048B1 patent drawingFigure 1B
  • EP3988048B1 patent drawingFigure 2~3A

AI summary

Apparatuses and methods for monitoring the performance of an orthodontic appliance for repositioning a patient's teeth. An orthodontic appliance may include a plurality of teeth receiving cavities shaped to reposition the patient's teeth from an initial arrangement towards a target arrangement, and one or more sensors configured to determine tooth movement (based on position and/or orientation) and/or forces applied to the teeth. The sensor may be distributed between attachments and aligners that mate with the attachments.