Projection-Guided 3D Tooth Model Cutting for Accurate Separation
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Solution Overview
Problem
Current three-dimensional tooth model cutting technologies suffer from low accuracy and inefficiency in processing, failing to meet the demands of precise tooth cutting for orthodontic simulations.
Innovation Solution
A method involving obtaining a two-dimensional projection image of a three-dimensional tooth model, recognizing tooth regions, determining original seed points, expanding them to target seed points, and cutting the model based on these points to achieve accurate tooth separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional tooth cutting methods are used, then the processing speed is fast, but the cutting accuracy is low and tooth missing positions occur
Solution Approach 1:
The patent applies preliminary action by first obtaining a two-dimensional projection image of the three-dimensional tooth model and recognizing tooth regions before performing the actual cutting. Original seed points are determined and expanded to target seed points in advance, establishing precise cutting boundaries before the cutting operation begins. This preliminary processing enables accurate tooth separation while maintaining efficient workflow.
2Measurement precision
If simple operation and automatic operation are used for simulation, then the communication between dentist and patient is improved, but the cutting precision of three-dimensional tooth model is insufficient
Solution Approach 1:
The patent replaces complex manual measurement and marking processes with automated image recognition and computational algorithms. The system automatically obtains two-dimensional projection images, recognizes tooth regions, determines original seed points, and expands them to target seed points through computational geometry operations. This substitution of mechanical/manual operations with digital processing achieves high measurement precision while keeping the user interface simple.
Data Source
AI summary
A method and apparatus for cutting a three-dimensional tooth model are provided. The method includes: obtaining a two-dimensional projection image of a three-dimensional tooth model, and recognizing the two-dimensional projection image to obtain a plurality of tooth regions, the tooth regions corresponding one to one to teeth; determining original seed points corresponding to the plurality of tooth regions in the three-dimensional tooth model; expanding the original seed points within a preset range to obtain target seed points of the teeth in the three-dimensional tooth model; and cutting the three-dimensional tooth model based on the target seed points of the teeth to obtain cut teeth.