Patient-Individualized Denture Modeling via Dynamic Geometric Adaptation
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Solution Overview
Problem
Current methods for modeling patient-individualized denture parts are complex and cumbersome, often requiring manual adjustments that can lead to unintended changes in the denture model, necessitating time-consuming iterative processes to satisfy geometric adaptation criteria and risking numerical inaccuracies.
Innovation Solution
A computer-implemented method that provides a digital three-dimensional patient situation model and a starting denture part model, allowing for user-defined changes while automatically calculating state-specific geometries to ensure geometric adaptation criteria are met, reducing the need for rectifications and improving the understanding of changes through dynamic visualization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual adjustments are made to the denture model to satisfy geometric adaptation criteria, then the denture part can be adapted precisely to patient-specific geometry, but the process becomes complex and time-consuming with risk of numerical inaccuracies
Solution Approach 1:
The patent pre-calculates and stores adaptation data for common geometric adaptation criteria before the actual denture modeling process. When a user selects predefined criteria, the system retrieves pre-computed adaptation parameters, avoiding time-consuming real-time calculations while maintaining precision in adapting the denture part to patient-specific geometry
Solution Approach 2:
The patent implements a dynamic modeling system that automatically adjusts the denture model based on selected geometric adaptation criteria. The system provides real-time feedback and automatically iterates to satisfy constraints, replacing manual trial-and-error adjustments with automated dynamic adaptation that reduces time while maintaining precision
2Manufacturing precision
If iterative adjustments are performed to satisfy geometric adaptation criteria, then the denture part geometry can be precisely adapted, but the process becomes cumbersome and requires repeated rectifications
Solution Approach 1:
The patent pre-defines multiple geometric adaptation criteria (e.g., point-to-point, point-to-line, point-to-plane adaptations) with pre-configured parameters and constraints. Users can select from these predefined criteria without needing to understand the complex mathematical computations behind each adaptation type, simplifying the interface while maintaining precise geometric adaptation capability
Solution Approach 2:
The patent implements an automated feedback mechanism that continuously monitors whether geometric adaptation criteria are satisfied during the modeling process. The system provides real-time feedback on constraint satisfaction and automatically adjusts the denture model parameters, eliminating the need for manual trial-and-error rectifications and reducing process complexity while maintaining high geometric accuracy
3Adaptability or versatility
If manual modeling methods are used to adapt denture parts to patient-specific geometry, then flexibility in design is maintained, but the process lacks automation and efficiency
Solution Approach 1:
The patent creates a universal modeling system that can handle multiple types of geometric adaptation criteria (point-to-point, point-to-line, point-to-plane, surface-to-surface) and various denture part types through a single automated platform. The system maintains design flexibility by allowing users to select from multiple adaptation strategies while automatically executing the appropriate computations, significantly improving productivity compared to manual methods
Solution Approach 2:
The patent replaces manual mechanical modeling operations with automated computer-based computations. The system uses algorithms to automatically calculate and apply geometric adaptations based on patient-specific data and selected criteria, substituting manual draftsmanship and measurement with automated digital processing that maintains design flexibility while dramatically increasing modeling efficiency
Data Source
AI summary
The invention relates to a method for modelling a patient-individualised denture part (140). The method comprises providing a digital three-dimensional patient situation model (118), a digital three-dimensional denture part model (114), and one or more geometric adaptation criteria defined using patient-specific delimiting surfaces. A denture part geometry of the denture part model is adapted in a patient-individualised manner to a patient situation geometry of the patient situation model. The patient-individualised adaptation process also comprises repeatedly interactively making user-defined changes to the denture part model, wherein the denture part model dynamically passes through a sequence of intermediate states during the course of each of the user-defined changes until a change state resulting from each user-defined change is reached. The dynamic passing through of the relevant sequence of intermediate states until the corresponding change state has been reached is displayed on a display device (108) by means of a graphical user surface (119).