Augmented Reality Tooth Preparation Guidance with Virtual Overlays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Dental professionals face challenges in consistently producing high-quality dental restorations due to variability in tooth preparation methods, leading to issues such as thin or over-reduced crowns, gaps, and improper insertion paths, which can result in long-term failure points.
Innovation Solution
An augmented reality system that uses AI-generated virtual dental preparations superimposed on real-time images of the tooth preparation, providing real-time feedback and alerts to ensure accurate alignment and completion of the preparation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual tooth preparation is performed by dental professionals, then the process is flexible and adaptable to individual cases, but the quality and consistency of tooth preparation vary significantly, leading to improper reduction, thin crowns, gaps, and long-term failure points
Solution Approach 1:
The system implements real-time feedback by continuously capturing images of the tooth preparation process, comparing the actual preparation against the virtual plan, and providing visual overlays that show deviations. This closed-loop feedback mechanism enables the dental professional to immediately correct improper reduction, ensuring the preparation matches the planned geometry and maintains consistent quality across different cases.
Solution Approach 2:
The system creates a digital copy (virtual dental preparation) of the desired tooth preparation geometry before the actual procedure. This virtual model serves as a precise template that is continuously compared against the real preparation, allowing the system to guide the dental professional in replicating the exact desired geometry, thereby improving both precision and consistency.
2Manufacturing precision
If virtual dental preparation plans are created and followed, then the precision and reproducibility of tooth preparation improve, but the complexity of the procedure increases due to the need for real-time imaging, processing, and display systems
Solution Approach 1:
The system employs a multi-functional integrated platform that combines 3D scanning, virtual preparation planning, real-time image capture, image processing, difference computation, and augmented reality display within a single system. This universal device performs multiple functions that would otherwise require separate equipment, managing the complexity through integration while delivering precise tooth preparation guidance.
Solution Approach 2:
The system replaces manual mechanical measurement and assessment methods with automated optical imaging and digital processing. Instead of relying on physical calipers, visual estimation, or manual measurement tools, the system uses cameras and computer vision algorithms to capture, analyze, and compare tooth geometry, substituting mechanical processes with optical-digital processes that provide more precise and consistent results.
3Reliability
If real-time image processing and comparison is performed during tooth preparation, then the quality control and error reduction improve, but the time required for the preparation process increases due to continuous imaging and computation
Solution Approach 1:
The system maintains continuous operation by performing real-time image capture, processing, and comparison throughout the entire tooth preparation process without interrupting the workflow. The continuous feedback loop allows the dental professional to maintain the preparation within acceptable tolerances throughout, preventing errors rather than detecting them after the fact, which actually reduces total time by avoiding rework.
Solution Approach 2:
The system performs preliminary actions by creating the virtual dental preparation plan before the actual tooth preparation begins. This pre-planning phase establishes the target geometry and criteria for success, allowing the real-time comparison to simply check against predetermined standards rather than requiring complex analysis during the procedure, thereby reducing computational time during the actual preparation.
Data Source
AI summary
A method and system that, with a surface representation of a virtual dental preparation being provided for a specific tooth, and until an exit condition is reached, repeat: generating an overlay from the surface representation based on a computed difference between a real-dental preparation and the virtual dental preparation; and coincidently superimposing the overlay upon a feed of images of the real-dental preparation thereby generating an augmented reality feed of images. The exit condition is tied to the computed difference. The method and system allow for displaying the augmented reality feed of images.