Patient-Specific Transfer Key for Precise Dentition Positioning
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Solution Overview
Problem
Existing methods lack a precise mechanism to transfer the virtually defined position of a 3D virtual representation of a patient's dentition to a physical articulator, as there is no physical facebow available for this purpose.
Innovation Solution
A patient individual physical transfer key is generated using 3D virtual representations and physical models, allowing for the precise positioning of a physical dentition model within a physical articulator by connecting to support sections and supporting the model components at predefined positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a physical facebow is used to transfer position data from the patient's head to the articulator, then the position transfer accuracy is improved, but the device complexity and requirement for additional physical equipment increases
Solution Approach 1:
The patent creates a digital copy (3D virtual representation) of the patient's dentition and articulator, allowing position data to be transferred and stored in virtual space. This digital model can be repeatedly referenced without requiring physical facebows or additional physical measurement equipment, thus improving position transfer accuracy while reducing device complexity
Solution Approach 2:
The patent replaces the mechanical facebow system with a digital information processing system. Instead of using physical mechanical devices to measure and transfer jaw position data, the invention uses 3D scanning, virtual modeling, and digital data storage to achieve the same position transfer function, thereby eliminating the need for complex physical equipment
2Reliability
If traditional physical methods are used to position dentition models in articulators, then the process requires multiple physical devices (facebows, markers), but the time consumption and procedural complexity increases
Solution Approach 1:
The patent performs preliminary digital scanning and 3D modeling of the patient's dentition and articulator before the actual positioning process. The virtual models are created in advance with precise position data embedded, allowing for quick reference and positioning during the physical setup without requiring time-consuming physical measurements or adjustments during the procedure
Solution Approach 2:
By creating digital copies of the dentition and articulator with embedded position information, the system allows rapid reproduction of accurate positions without repeatedly using physical facebows or measurement devices, significantly reducing the time required for model positioning while maintaining high reliability
Data Source
AI summary
The invention relates to a method for configurating a patient individual physical transfer key for transferring a virtually defined first position of a three-dimensional virtual representation of a physical model of a patients dentition within a 3D virtual representation of a physical articulator to the physical model of the patients dentition and the physical articulator. A 3D virtual representation of the physical transfer key is generated and provided for generating the physical transfer key. The transfer key is configured to be connected to a first support section of the articulator and to support a first one of the 3D virtual representations of the model components of the dentition model at the first position.