Marker-Guided Oral Model Matching With CT Data for Edentulous Patients
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Solution Overview
Problem
Existing methods struggle to accurately match oral model data with CT data, especially for edentulous patients, due to the lack of reference matching points, complicating the generation of accurate surgical guides for implant surgery.
Innovation Solution
A method and device that uses markers placed on oral model data to generate a radiographic guide, which is used to align and match oral model data with CT data, utilizing a computing device to recommend and position markers for accurate alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional matching methods are used for edentulous patients, then the matching process becomes impossible or highly inaccurate, but introducing markers increases device complexity and requires additional scanning steps
Solution Approach 1:
The patent introduces markers as intermediary objects that facilitate the matching process between oral model data and CT data. These markers serve as a common reference system that both datasets can be aligned to, solving the fundamental problem of matching edentulous patient data without requiring complex direct matching algorithms
Solution Approach 2:
The markers are placed on the oral model before scanning, and their positions are predetermined based on anatomical landmarks. This preliminary positioning ensures that reference points are available in both the oral model scan and CT scan, enabling accurate matching without requiring complex post-processing
2Measurement precision
If multiple scanning steps with markers are performed, then matching accuracy improves, but the time required for data acquisition and processing increases
Solution Approach 1:
The patent combines the marker placement, oral model scanning, and CT scanning into an integrated workflow. The markers serve dual purposes: they are visible in both optical scans and CT scans, allowing a single set of markers to enable matching across multiple data types without requiring separate marking procedures for each scan type
Solution Approach 2:
The markers create a common reference framework that is copied across different imaging modalities. The same physical markers appear in both the oral model scan and CT scan, providing identical reference points in both datasets that can be directly matched without complex transformation algorithms
3Measurement precision
If manual marker placement is used, then positioning accuracy may be high, but the operation becomes time-consuming and less reproducible
Solution Approach 1:
The system automatically identifies candidate regions for marker placement based on the oral model geometry and recommends optimal positions. This self-service approach reduces reliance on manual expert judgment while maintaining high positioning accuracy through algorithmic analysis of anatomical features
Solution Approach 2:
The system provides feedback by recommending marker positions based on analysis of the oral model data, allowing operators to make informed decisions. The automated recommendations are based on geometric analysis that identifies optimal landmark positions, combining machine precision with human oversight
Data Source
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AI summary
The present disclosure relates to a method and device for matching oral model data that can provide matching points to a user to match oral model data and computerized tomography (CT) data even for edentulous patients. In this way, convenience is increased and matched data can be effectively generated even for edentulous patients for whom matching has been difficult conventionally.