Augmented Reality Orthodontic Planning for Appliance Fit and Force Analysis
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Solution Overview
Problem
Existing orthodontic treatment planning methods lack efficient and precise tools for real-time scanning, tracking progress, and modifying treatment plans without requiring complex intraoral scanners, and do not effectively evaluate the fit and forces of orthodontic appliances on patients' teeth.
Innovation Solution
Utilizing augmented reality (AR) and virtual reality (VR) systems with wearable displays to scan, track, and modify orthodontic treatment plans, including real-time 3D imaging, virtual manipulation of teeth, and visualization of forces and appliance fit, without the need for full intraoral scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex intraoral scanners are used for real-time scanning and treatment tracking, then measurement precision and reliability are improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent uses augmented reality to create a virtual copy of the patient's dentition that is overlaid onto the real-world view. This virtual model serves as a simplified representation that provides precise tooth position tracking without requiring complex physical scanning infrastructure. The AR system captures the essential geometric information needed for orthodontic monitoring while eliminating the need for bulky intraoral scanners.
Solution Approach 2:
The patent replaces the mechanical intraoral scanning system with an optical-based augmented reality system. Instead of using physical probes and mechanical scanners to capture tooth positions, the system uses cameras and computer vision algorithms to track tooth movement and overlay virtual models onto the real dental arch, significantly reducing device complexity.
2Measurement precision
If full intraoral scanning is performed for treatment planning, then measurement precision is improved, but loss of time and productivity deteriorate
Solution Approach 1:
The patent implements partial scanning by capturing only the essential features of the dental arch needed for orthodontic monitoring. Rather than performing complete 360-degree scans of the entire oral cavity, the system focuses on capturing and tracking the teeth and dental appliances, reducing scanning time while maintaining sufficient measurement precision for treatment planning.
Solution Approach 2:
The patent performs preliminary capture of dental arch images and superimposes treatment plan visuals before actual treatment begins. This allows the orthodontist to plan and visualize tooth movement trajectories in advance, reducing the time needed during actual treatment procedures and appointments.
3Ease of operation
If traditional treatment planning methods are used, then ease of operation is maintained, but measurement precision and treatment tracking accuracy deteriorate
Solution Approach 1:
The patent introduces augmented reality as an intermediary layer between the orthodontist and the patient's dentition. The AR system provides a visual overlay that shows tooth positions, appliance fit, and treatment progress directly in the orthodontist's field of view, maintaining the simplicity of direct observation while dramatically improving measurement precision and tracking accuracy.
4Productivity
If augmented reality systems are implemented for real-time feedback, then measurement precision and productivity are improved, but device complexity worsens
Solution Approach 1:
The patent designs the augmented reality system to perform multiple functions: capturing dental arch images, tracking tooth positions, monitoring appliance fit, visualizing treatment plans, and providing real-time feedback. By consolidating these functions into a single AR platform, the system improves productivity across all treatment planning activities while managing device complexity through integration rather than proliferation of separate tools.
Data Source
AI summary
Apparatuses and methods for performing orthodontic treatment planning are provided. Virtual/Augmented Reality devices can be used to virtually manipulate patient's teeth, modify virtual models of the patient's teeth, analyze the fit of a dental appliance on the patient's teeth, analyze the position of attachment sites for dental appliances, and provide overlays showing forces applied to the patient's teeth. The VR/AR devices can be used by physicians and/or the patient to provide and display treatment planning. In some examples, a length and/or angle of an elastic band or wire and one or more effective forces on a patient's teeth when a dental appliance is applied to the patient's teeth may be determined. A visual overlay graphically illustrating the one or more effective forces may be generated and displayed.