Synchronized Video and 3D Model for Dental Margin Marking
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Solution Overview
Problem
Current dental scanning technologies face challenges in accurately capturing three-dimensional data around the margin of a prepared tooth surface due to obstacles like tissue collapse, blood, and saliva, leading to ambiguities in digital models.
Innovation Solution
The integration of synchronized still images and three-dimensional models, allowing users to interactively mark margins through a graphical user interface that includes video controls, stereoscopic views, and image enhancement techniques to improve visual clarity and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If intra-oral scanning is performed to capture digital dental impressions, then three-dimensional data of dentition is obtained, but ambiguities arise in margin areas due to tissue collapse, blood, and saliva obscuring the margin
Solution Approach 1:
The patent combines two-dimensional video images captured during intra-oral scanning with three-dimensional digital models of dentition. The video images provide clear visual information about tooth margins that is not obscured by tissue collapse, blood, or saliva, while the 3D model provides spatial context. By merging these complementary data sources, the system resolves ambiguities in margin detection that exist in either modality alone.
Solution Approach 2:
The patent transitions from relying solely on three-dimensional model data to incorporating two-dimensional video image data for margin detection. This dimensional complementarity allows the system to view margin information from a different perspective - the 2D video provides unobstructed visual access to margin areas that may be collapsed or obscured in the 3D spatial representation, thereby resolving detection ambiguities.
2Measurement precision
If synchronized video images and three-dimensional models are integrated in the graphical user interface, then visual clarity and accuracy of margin marking is improved, but device complexity increases
Solution Approach 1:
The patent introduces a synchronization mechanism that acts as an intermediary between the video image display and the three-dimensional model display in the graphical user interface. This synchronization system coordinates the presentation of both data modalities, ensuring they are displayed in correspondence with each other, which simplifies the user interaction despite the underlying complexity of integrating multiple data sources and display mechanisms.
Data Source
AI summary
Tools are described for preparing digital dental models for use in dental restoration production processes, along with associated systems and methods. Dental modeling is improved by supplementing views of three-dimensional models with still images of the modeled subject matter. Video data acquired during a scan of the model provides a source of still images that can be displayed alongside a rendered three-dimensional model, and the two views (model and still image) may be synchronized to provide a common perspective of the model's subject matter. This approach provides useful visual information for disambiguating surface features of the model during processing steps such as marking a margin of a prepared tooth surface for a restoration. Interactive modeling tools may be similarly enhanced. For example, tools for margin marking may synchronize display of margin lines between the still image and the model so that a user can interact with either or both of the visual representations, with changes to a margin reflected in both displays.