3D Dental Model Generation via Surface and CBCT Data Integration
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Solution Overview
Problem
Current orthodontic treatment planning lacks accurate three-dimensional models of a patient's dentition and surrounding anatomy, particularly in areas like roots, bones, and soft tissues, which are essential for efficient and precise tooth movement simulations.
Innovation Solution
Combining surface scan data with volume scan data using Cone Beam Computed Tomography (CBCT) or Magnetic Resonance Tomography (MRT) imaging to generate comprehensive three-dimensional models, including tooth roots, bones, and soft tissues, through a unified workstation that processes and merges the data for precise treatment planning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If surface scan data alone is used to create dental models, then the modeling process is simple and fast, but the models lack accurate representation of roots, bones, and soft tissues
Solution Approach 1:
The patent combines surface scan data (providing detailed tooth crown information) with volume scan data from CBCT or MRT (providing roots, bones, and soft tissues) to create comprehensive 3D dental models. This merging of multiple data sources resolves the contradiction by achieving high measurement precision while managing device complexity through integrated processing.
Solution Approach 2:
The patent segments the dental modeling process into distinct components: surface scanning for crown geometry, volume scanning for internal structures, and computational integration. This segmentation allows each scanning modality to specialize in what it does best while the system as a whole achieves comprehensive accuracy.
2Measurement precision
If volume scan data from CBCT or MRT is used alone, then roots, bones, and soft tissues are captured, but the detail and resolution of tooth crowns are insufficient
Solution Approach 1:
The patent merges surface scan data (high-resolution tooth crowns) with volume scan data (comprehensive anatomical structures) to create integrated 3D models. This combination prevents information loss by ensuring both surface detail and internal structure completeness are preserved in the final model.
Solution Approach 2:
The patent applies different scanning methodologies to different regions of the dentition: surface scanning provides high local quality for tooth crowns where surface detail is critical, while volume scanning provides comprehensive coverage for roots and bones where structural completeness is paramount. Each region receives the appropriate level of detail from the most suitable scanning method.
3Measurement precision
If traditional plaster models and manual set-up are used, then comprehensive anatomical information is obtained, but the process requires extreme time and labor
Solution Approach 1:
The patent replaces the mechanical manual process of creating plaster models and performing hand-set-up with automated digital scanning and computer-based 3D modeling. This substitution maintains high measurement precision for treatment planning while dramatically reducing the time and labor required, as digital processes can be performed rapidly without manual fabrication steps.
Solution Approach 2:
The patent creates digital 3D copies of the patient's dentition and surrounding anatomy through scanning, replacing physical plaster models. These digital copies retain all necessary anatomical information for accurate treatment planning while eliminating the time-consuming process of physical model fabrication, cutting, and assembly.
4Productivity
If brackets are placed directly on patient's teeth without simulation, then the bonding process is quick, but there is no way to confirm correct placement and requires corrections later
Solution Approach 1:
The patent performs preliminary 3D treatment simulation and bracket placement planning on the digital model before actual bonding. This preliminary action allows the orthodontist to verify correct bracket positioning and treatment outcomes in advance, ensuring high reliability of placement while maintaining quick bonding execution during the actual procedure.
Solution Approach 2:
The patent provides visual feedback through 3D digital models showing simulated treatment outcomes and bracket placements before actual bonding occurs. This feedback mechanism allows the orthodontist to confirm correct placement accuracy in advance, preventing errors and reducing the need for corrections during or after treatment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach provides accurate and detailed three-dimensional models, enhancing the precision of orthodontic treatment planning by integrating data on tooth crowns, roots, bones, and soft tissues, thereby improving the predictability and efficiency of orthodontic treatments.
Implementation Method 1
Volume scans of the patient's dentition are obtained using Cone Beam Computed tomography (CBCT) or Magnetic Resonent Tomography (MRT) imaging equipment
Implementation Method 2
Volume scans of the patient's dentition are obtained using Cone Beam Computed tomography (CBCT) or Magnetic Resonent Tomography (MRT) imaging equipment
Data Source
AI summary
A method and apparatus are disclosed enabling an orthodontist or a user to create an integrated three dimensional digital model of dentition and surrounding anatomy of an orthodontic patient from a three-dimensional digital model obtained using a scanner with a three-dimensional digital model obtained using a Cone Beam Computed Tomography (CBCT) or Magnetic Resonance Tomography (MRT) imaging devices. The digital data obtained from scanning as well as from CBCT imaging are downloaded into a computer workstation, and registered together in order to create a comprehensive 3-D model of the patient's teeth with roots, bones and soft tissues. The invention provides substantial improvement over the traditional two dimensional imaging modalities such as x-rays, photographs, cephalometric tracing for diagnosis and treatment planning.