Intraoral Scan Post Positioning Using 3D Stitching References
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Solution Overview
Problem
Intraoral scanning data obtained by existing scanners suffer from cumulative errors due to the limitation of scanning range, leading to inaccurate positioning of scan posts and poor accuracy in implantation.
Innovation Solution
A method and system for processing intraoral scanning that includes installing intraoral scan posts with auxiliary feature points, using a single-lens reflex photogrammetry system to obtain true value coordinates, and stitching initial three-dimensional data with a preset model to determine precise positioning information of scan posts for accurate dental prosthesis design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multi-data stitching solution is used to expand scanning range, then scanning coverage is improved, but positioning accuracy deteriorates due to cumulative errors
Solution Approach 1:
The patent introduces scan posts with auxiliary feature points as intermediary objects between the scanner and the oral cavity. These scan posts serve as reference mediators that provide known coordinate points for stitching calculations, enabling accurate positioning even when multiple scanning sessions are combined to expand coverage area.
Solution Approach 2:
The patent creates a virtual 3D model that copies and reconstructs the physical oral cavity geometry. By stitching scanned data to this virtual model using auxiliary feature points as references, the system maintains positioning accuracy while expanding scanning coverage through multiple data acquisitions.
2Productivity
If conventional scanning method is used, then scanning speed is maintained, but implantation accuracy deteriorates
Solution Approach 1:
The patent performs preliminary positioning by placing scan posts with known auxiliary feature points into the oral cavity before scanning. These pre-positioned references enable the stitching algorithm to accurately align multiple scanning sessions without requiring slower, more meticulous scanning procedures, thus maintaining productivity while improving implantation accuracy.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the accuracy of scan post positioning by obtaining precise three-dimensional data and stitching it with real-time coordinate points, improving the accuracy of dental implantation.
Implementation Method 1
using a single-lens reflex photogrammetry system to obtain true value coordinates
Data Source
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AI summary
Embodiments of the present disclosure relate to a method and system for processing intraoral scanning, an electronic device, and a medium. The method includes: obtaining a positioning mode of a scan post in response to a request for scanning an oral cavity including scan posts, scanning the oral cavity to obtain target scanning data, and performing processing based on the positioning mode of the scan post and the target scanning data to determine positioning information of the scan posts. By adopting the above technical solution, the positioning information of the scan posts can be acquired based on a scanning result, and the requirement for positioning the scan posts in an intraoral scanning scenario is further satisfied.