Orthodontic Treatment Planning System for Safe Tooth Stripping
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Solution Overview
Problem
Current orthodontic treatment planning often faces challenges in predicting and executing tooth stripping procedures effectively, leading to potential collisions between teeth, which can result in anatomical constraints and complications such as damage to the pulp cavity or loss of teeth, and inefficient use of computational resources.
Innovation Solution
A method and system that pre-qualify tooth stripping as part of the orthodontic treatment plan using a two-phase approach, determining whether adjacent teeth are close enough for stripping and ensuring the procedure can be conducted safely by analyzing 3D digital models to prevent collisions and ensure safe removal of tooth material without damaging the dentine or pulp cavity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If tooth stripping is performed to avoid collisions between teeth, then the accuracy of orthodontic treatment planning is improved, but the risk of damaging dentine or pulp cavity increases
Solution Approach 1:
The system performs preliminary validation of tooth stripping requests before executing the procedure. It calculates the distance from the proposed stripping plane to the pulp cavity and dentine layer in advance, checking whether these distances meet safety thresholds. This preliminary action prevents harmful stripping operations from being performed, thereby resolving the contradiction between achieving accurate collision avoidance and preventing damage to tooth structures.
2Reliability
If comprehensive validation of tooth stripping is performed, then the safety of the procedure is improved, but the computational resources required increase
Solution Approach 1:
The validation process is segmented into distinct phases: first, the system checks whether the distance between adjacent teeth exceeds a threshold (quick rejection criterion), and only if this initial check passes does it proceed to the more computationally intensive validation of stripping plane distance to pulp cavity and dentine layer. This segmentation allows the system to quickly eliminate unsafe stripping requests without performing full validation on all cases, thereby resolving the contradiction between comprehensive safety validation and computational efficiency.
3Productivity
If tooth stripping is performed without validation, then the treatment plan can be executed quickly, but collisions between teeth may occur
Solution Approach 1:
The system performs preliminary validation checks before finalizing the treatment plan, including checking the distance between adjacent teeth and the distance from the stripping plane to critical tooth structures. By performing these checks in advance, the system ensures collision avoidance accuracy is maintained while keeping the overall treatment plan execution efficient, as the validation occurs as part of the planning phase rather than delaying implementation.
Data Source
AI summary
A method and a system for determining an orthodontic treatment plan including a tooth stripping step are provided. The method comprises: acquiring a 3D digital model of a first tooth and a second tooth of the subject, the second tooth being adjacent the first tooth; receiving a stripping request for stripping tooth material, from at least one of the first tooth along a first stripping plane and the second tooth along a second stripping plane; determining, along a surface of the first tooth, a first area of interest; determining, along the surface of the second tooth, a second area of interest; determining a distance between a first set of vertices associated with the first area of interest and a second set of vertices associated with the second area of interest; in response to the distance being greater than a predetermined distance threshold, denying, by the processor, the stripping request.