Complete Tooth 3D Modeling via Generic Root Morphing
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Solution Overview
Problem
Current computational orthodontics techniques are limited to crown modeling and fail to account for root information, leading to incomplete tooth models that do not consider root movement, which hinders orthodontic treatment and can result in root collisions.
Innovation Solution
A system and method for creating three-dimensional models of complete teeth by combining generic root and crown components with actual patient data, using automated morphing and adjustment techniques to generate accurate root and crown models, including the use of X-ray imaging for precise root shape approximation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If impression-based computational orthodontics techniques are used for crown modeling, then crown and gum shape information can be captured, but root information is not captured and root movement cannot be accounted for
Solution Approach 1:
The tooth is segmented into two distinct components: crown (visible portion) and root (embedded portion). The crown is captured using impression-based scanning techniques, while the root is modeled using a combination of generic root templates and X-ray imaging data. This segmentation allows each component to be captured using the most appropriate method, preserving root information without requiring a completely new modeling system.
Solution Approach 2:
X-ray imaging serves as an intermediary tool to capture root information that cannot be directly observed. The X-ray data is processed and integrated with the crown model to create a complete tooth model. This intermediary approach enables root information capture without requiring direct physical access to the root structure.
2Reliability
If complete tooth models including root are created, then root movement and collision detection can be achieved, but the modeling process becomes more complex requiring integration of multiple data sources
Solution Approach 1:
The system merges multiple data sources including impression-based crown models, generic root templates, and patient-specific X-ray imaging data into a single integrated complete tooth model. This merging process combines the strengths of each data source to create a comprehensive model that includes both crown and root information, enabling accurate root movement prediction and collision detection.
Solution Approach 2:
The complete tooth modeling system serves multiple functions: it captures crown geometry, models root structure, predicts root movement, and performs collision detection. By creating a unified model that handles all these functions, the system improves orthodontic treatment reliability without requiring separate specialized systems for each function.
3Productivity
If generic root models are morphed with actual crown models, then complete tooth models can be generated efficiently, but variations in actual root shape may not be fully captured
Solution Approach 1:
The system uses parameter changes to adapt generic root templates to individual patients. X-ray imaging data provides specific parameters (such as root length, curvature, and cross-sectional shape) that are used to modify the generic templates. This allows efficient generation of complete tooth models while capturing patient-specific root shape variations through controlled parameter adjustments.
Data Source
AI summary
A system and method for modeling of complete tooth, including root and crown, of a patient to facilitate orthodontic treatment are provided, wherein generic tooth modeling is combined with tooth crown modeling for a patient to yield complete tooth modeling. A generic tooth 3D model for a particular tooth is morphed with a 3D model of a patient's crown for the corresponding tooth to yield a complete 3D model for that tooth. Modeling techniques can be conducted with computer-based systems, such as systems configured for storing patient data and generic tooth data, morphing such data and/or facilitating additional orthodontic treatment applications, through the use of one or more algorithms. Adjustment of the complete tooth model for the tooth can be provided through additional patient information, such as X-ray imaging, to address variations in root shape between a generic root and an actual root shape for a patient.