Virtual Articulation for Orthodontic Treatment Planning
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Solution Overview
Problem
Current orthodontic treatment planning is time-consuming and inefficient, particularly in determining optimal tooth trajectories and articulation, as it relies on manual processes and expensive analog devices, struggling to handle complex tooth movements and collisions effectively.
Innovation Solution
A computer-implemented method and system for virtual articulation that evaluates and modifies three-dimensional tooth scans to determine dynamic collision metrics, comfort measurements, and treatment efficacy, enabling automated generation of treatment plans for clear tray aligners and other modalities, incorporating biomechanics-based rules and multi-appliance treatments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual processes using face bow and lab articulator are used to capture mandibular articulation data, then accurate articulation can be achieved, but the process is time consuming and requires expensive analog devices
Solution Approach 1:
The patent uses digital 3D scans of teeth and arches to create virtual copies of the patient's dentition, replacing the need for physical analog articulators and face bow measurements. These digital models serve as accurate replicas that can be manipulated and analyzed computationally without requiring expensive physical equipment or time-consuming manual procedures.
Solution Approach 2:
The patent replaces the mechanical face bow and lab articulator system with a digital computation system. Instead of using physical mechanical devices to capture and simulate mandibular movements, the system uses computer algorithms to process digital 3D models and calculate articulation data, thereby eliminating the need for expensive mechanical equipment and reducing acquisition time.
2Reliability
If manual treatment planning processes are used, then treatment plans can be determined, but the process is very time consuming
Solution Approach 1:
The patent performs preliminary digital setup of teeth in a virtual environment before actual treatment begins. The system pre-calculates optimal tooth trajectories, intermediate stages, and articulation data by processing digital 3D models, thereby preparing all necessary treatment planning information in advance through automated computation rather than manual analysis during the treatment process.
Solution Approach 2:
The patent replaces manual treatment planning with automated computer-based planning. The system uses computational algorithms to analyze digital 3D scans, determine optimal tooth movements, calculate intermediate stages, and generate treatment plans, thereby eliminating time-consuming manual processes while maintaining or improving planning accuracy through digital processing capabilities.
3Ease of operation
If clear tray aligners are used for orthodontic treatment, then tooth positioning can be achieved, but complex tooth movements such as root movements and rotations cannot be effectively accomplished
Solution Approach 1:
The patent creates dynamic virtual models of teeth and their movements through the treatment process. The system simulates complex tooth movements including rotations, root movements, and intermediate positioning stages in a computer environment, allowing for the planning and evaluation of treatments that go beyond simple linear tooth movements. This dynamic virtual simulation enables the system to handle complex movements that would be difficult to achieve with clear tray aligners alone.
Solution Approach 2:
The patent introduces virtual articulation and digital simulation as intermediary tools between the treatment plan and actual tooth movement execution. These virtual models serve as mediators that allow for the planning, visualization, and optimization of complex tooth movements before treatment begins, enabling the consideration of complex movements like root positioning and rotations that would be difficult to achieve directly with traditional clear tray aligners.
4Reliability
If multiple treatment options are generated for a patient, then treatment efficacy can be optimized, but the search space becomes large and complex
Solution Approach 1:
The patent segments the complex tooth movement problem into discrete intermediate stages and individual tooth movements. The system breaks down the overall treatment plan into manageable steps, calculating optimal movements for each tooth at each stage separately. This segmentation allows the system to handle the complexity of multiple treatment options by processing them in organized, manageable portions rather than attempting to evaluate all possibilities simultaneously.
Solution Approach 2:
The patent replaces manual evaluation of multiple treatment options with automated computer-based optimization. The system uses computational algorithms to generate, evaluate, and compare multiple treatment plans automatically, processing the large search space through digital computation rather than manual analysis. This substitution enables the consideration of numerous treatment options and the optimization of treatment efficacy without overwhelming complexity in the planning process.
Data Source
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AI summary
This disclosure describes a computer-implemented method and system for evaluating, modifying, and determining setups for orthodontic treatment using metrics computed during virtual articulation. The virtual articulation techniques of this disclosure may further be combined with techniques for determining dynamic collision metrics, determining a comfort measurement, determining treatment efficacy, and/or determining dental conditions, such as bruxism. The techniques of this disclosure further include user interface techniques that provide an orthodontist/dentist/technician with information regarding various treatment plans based on metrics gathered during virtual articulation.