Intraoral Scanner Registration With 3D Face Scans
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Solution Overview
Problem
Existing dental scanning technologies do not effectively integrate 3D models of patient dental arches with facial models, limiting comprehensive treatment planning in dentistry.
Innovation Solution
A system combining intraoral scanning with face scanning, using a 3D image capture device and computing device to register intraoral scan data with facial images based on the position and orientation of the intraoral scanner, enabling the generation of integrated 3D models of dental arches and faces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If intraoral scanning is performed separately from face scanning, then intraoral scan data can be obtained, but 3D models of dental arches cannot be integrated with facial models
Solution Approach 1:
The patent combines intraoral scanning and face scanning into a single integrated system. The computing device receives both intraoral scan data and 3D face images, then registers them together to create a unified 3D model that includes both dental arches and facial features, eliminating the need for separate scanning processes
Solution Approach 2:
The intraoral scanner serves as an intermediary object that appears in both the intraoral scan data and the 3D face images. By detecting the position and orientation of the intraoral scanner in the 3D face images and using its known position in the intraoral scan data, the system establishes a transformation relationship that enables registration between the two datasets
2Loss of information
If multiple separate scanning processes are used, then comprehensive dental data can be collected, but treatment planning efficiency decreases
Solution Approach 1:
The system performs face scanning and intraoral scanning in a continuous process rather than as separate discrete steps. The computing device simultaneously processes both intraoral scan data and 3D face images, continuously registering them to build a complete 3D model that supports comprehensive treatment planning in a single workflow
3Adaptability or versatility
If 3D models of dental arches and facial models are kept separate, then scanning processes remain simple, but advanced treatment planning and simulation cannot be performed
Solution Approach 1:
The patent integrates 3D facial data and 3D intraoral data into a unified multi-dimensional space. By establishing a transformation relationship between the coordinate systems of the two datasets through the intraoral scanner's position and orientation, the system creates a combined 3D model that enables advanced treatment planning, orthodontic simulation, and prosthodontic design
Data Source
AI summary
A system comprises an intraoral scanner, a three-dimensional (3D) image capture device, and a computing device operatively coupled to the intraoral scanner and to the 3D image capture device. The computing device receives intraoral scan data of a dental site of a patient generated by the intraoral scanner during intraoral scanning. The computing device further receives one or more 3D images of a face of the patient generated by the 3D image capture device during the intraoral scanning, wherein the intraoral scanner is captured in the one or more 3D images. The computing device registers the one or more 3D images of the face of the patient to the first intraoral scan data based at least in part on a first position of the intraoral scanner relative to the face of the patient in the one or more 3D images.