Dental Prosthesis 3D Scan Data Alignment Using Digital Library
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Solution Overview
Problem
Current methods for manufacturing dental prostheses face challenges in accurately scanning abutments and scanbodies due to diffused reflection and limited scanning angles within the oral cavity, leading to incomplete data acquisition and prolonged scanning times, without standardized alignment methods.
Innovation Solution
A method that involves acquiring 3D image data of the oral cavity using a 3D scanner, comparing it to reference data, and automatically aligning the scanned data with CAD or surface data to determine precise location alignment, allowing for efficient data acquisition and reduced scanning time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an intraoral scanner is used to scan an abutment or scanbody in the oral cavity, then 3D data can be acquired for prosthesis design, but the scanning process becomes time-consuming and may fail to accurately capture the margin due to diffused reflection and limited scanning angles
Solution Approach 1:
The patent uses a pre-designed digital library containing standardized abutment and scanbody models as templates. Instead of relying solely on potentially incomplete or inaccurate scanning of the actual physical abutment or scanbody in the oral cavity, the system copies the relevant geometric data from the digital library that matches the identified abutment or scanbody type. This eliminates the need to scan difficult-to-access areas like the margin, significantly reducing scanning time while maintaining accuracy through the use of pre-validated digital models.
2Measurement precision
If the scanning process is extended to ensure complete data acquisition of the abutment or scanbody, then measurement accuracy improves, but patient discomfort increases and productivity decreases
Solution Approach 1:
The system performs preliminary identification of the abutment or scanbody type before completing the full scanning process. By recognizing the specific model from the digital library early in the process, the system can substitute the remaining unscanned portions with corresponding data from the library, eliminating the need for time-consuming complete scanning while ensuring data completeness through the use of accurate pre-existing models.
Solution Approach 2:
The system copies complete abutment or scanbody models from the digital library to supplement partially scanned data. This allows the system to achieve complete and accurate 3D data without requiring the scanner to capture every detail during the scanning process, thereby improving productivity while maintaining measurement precision.
3Adaptability or versatility
If manual alignment and data processing are performed without automated recognition, then flexibility in handling various abutment types is maintained, but the complexity of the process increases and time consumption rises
Solution Approach 1:
The system implements automated recognition that enables the scanning process to self-identify the abutment or scanbody type and automatically retrieve corresponding data from the digital library. This self-service capability eliminates the need for manual intervention in identifying and matching abutment types, reducing process complexity and time consumption while maintaining the ability to handle various abutment types through the comprehensive digital library.
Data Source
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AI summary
The present invention relates to a method of processing three-dimensional scan data for manufacture of dental prosthesis, the method identifies a position for an implant procedure on the basis of image data for an oral structure, and generates aligned image data by retrieving, from a library, data corresponding to a scan body or an abutment, only a part of which has been scanned, by replacing a part or the whole of the image data with the retrieved data, and by aligning a position and a direction of the image data. By using the method, user can easily identify an oral structure from the image data obtained by scanning partial shape of the scan body or the abutment, and the method provides feedback to the user so that the method guides the user to correct measurement. Therefore, the prosthesis can be manufactured more quickly due to reduced scan time.