Dental Scanning Indicator for Precision Alignment
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Solution Overview
Problem
Current methods for acquiring three-dimensional shape data inside the oral cavity using scanners result in inconsistent data due to size and positional variations, leading to inaccuracies in prosthesis manufacturing, causing issues like malocclusion and tooth deformation.
Innovation Solution
An indicator and composition that adjust the relative size of scanned images to an absolute size and align them according to position, using a combination of materials like metals, alloys, and a light scannability enhancer with specific formulations, to enhance scanning precision and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a small size scanner is inserted into the oral cavity to acquire three-dimensional shape data, then the scanner can be actually inserted and operated, but the distance and angle between the scanner and subject are continually changed resulting in scanning data inconsistency and low measurement precision
Solution Approach 1:
The patent introduces an indicator as an intermediary object that is attached to the subject's teeth. This indicator serves as a reference marker that remains stationary relative to the teeth while the scanner moves, allowing the system to track and compensate for changes in distance and angle. The indicator provides fixed reference points that enable accurate spatial relationship calculation between multiple scanning positions, thereby resolving the inconsistency caused by scanner movement.
Solution Approach 2:
The patent changes the reference frame from scanner-centered coordinates to indicator-centered coordinates. By establishing a fixed coordinate system based on the indicator attached to the teeth, the system can transform and align scanning data from different positions and angles into a consistent three-dimensional model, compensating for the variable distance and angle parameters during scanning.
2Productivity
If scanning data is composed by adjusting size and directly connecting scanning data from different positions, then three-dimensional shape data can be formed, but the formed structure is considerably different from the actual subject resulting in manufacturing precision errors
Solution Approach 1:
The indicator acts as a mediator that establishes accurate spatial relationships between scanning data from different positions. By using the indicator's known geometry and position on the teeth as a reference, the system can precisely calculate transformation parameters between views, ensuring that the composed three-dimensional shape data accurately represents the actual subject geometry.
Solution Approach 2:
The indicator provides feedback reference points that allow the system to verify and adjust the alignment of scanning data from different positions. By comparing the indicator's appearance across multiple scans against its known geometry, the system can detect and correct positioning errors, ensuring high precision in the final three-dimensional reconstruction.
Data Source
AI summary
Provided is an indicator for enhancing scanning precision, a composition for enhancing scanning precision, and a method of enhancing scanning precision of an article. The disclosed indicator serves to adjust, to an absolute size, a relative size of each of a plurality of images acquired by scanning a subject with a scanner, and to align each image according to position.