Photogrammetry-Based Tooth Modeling for Size-Matched Dental Laminates
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing dental treatments for cosmetic purposes, such as orthodontics, implants, and laminates, are inconvenient, costly, and can cause irreversible damage to teeth, with orthodontics requiring long-term use and implants being costly and restricted by patient anatomy, while laminates involve enamel removal and risk malocclusion and inflammation.
Innovation Solution
A system for manufacturing a 3D dental laminate using image information from a user's teeth, involving image analysis, 3D modeling, and adjustment for actual tooth size, allowing for precise dental laminate production without irreversible tooth loss, using a processor, memory, and 3D printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional dental treatments (orthodontics, implants, laminates) are used for cosmetic purposes, then aesthetic improvement is achieved, but the treatment process becomes complex, costly, and time-consuming with potential irreversible damage
Solution Approach 1:
The patent uses photogrammetry to create a 3D digital copy of the patient's teeth from 2D photographs. This digital model serves as a precise replica that can be manipulated and measured without physical contact, eliminating the need for traditional physical measurement tools and complex dental procedures while maintaining high measurement precision.
Solution Approach 2:
The patent replaces mechanical measurement systems (physical calipers, molds, and direct tooth contact methods) with optical-based photogrammetry. By using multiple 2D images captured from different angles and computationally reconstructing the 3D structure, the system achieves precise tooth measurements without mechanical intervention, thereby reducing treatment complexity and avoiding irreversible tooth modification.
2Manufacturing precision
If 3D scanning and precise measurement are performed using conventional methods, then accurate tooth alignment is achieved, but the patient must visit the dentist multiple times for treatment
Solution Approach 1:
The patent performs all measurement, 3D modeling, and laminate design operations in advance using photogrammetry and computer-based systems. The digital 3D model is created from photographs taken during a single visit, and the laminate design is finalized before manufacturing begins. This preliminary digital preparation eliminates the need for multiple adjustment visits and allows manufacturing to proceed with high precision based on pre-established data.
Solution Approach 2:
The patent creates a complete digital 3D copy of the patient's dentition that can be manipulated, measured, and used for manufacturing purposes without requiring the patient's physical presence during subsequent stages. This digital replica enables all necessary measurements and design adjustments to be made virtually, reducing the need for repeated dental visits while maintaining manufacturing precision.
3Ease of operation
If laminate-based treatment is performed by removing tooth enamel, then cosmetic improvement is achieved, but irreversible damage occurs and risks such as malocclusion and gum inflammation arise
Solution Approach 1:
The patent uses photogrammetry to create accurate digital 3D models of the patient's teeth, allowing for virtual simulation and planning of the laminate treatment. This digital copy enables precise measurement and design of the laminate to ensure proper fit and alignment, eliminating the need for excessive enamel removal and reducing risks of malocclusion and gum inflammation while maintaining ease of treatment implementation.
Solution Approach 2:
The patent performs comprehensive 3D modeling and laminate design in advance using the digital tooth model. By simulating the treatment outcome and measuring the required laminate dimensions digitally before manufacturing, the system ensures that the final laminate fits precisely, minimizing the need for aggressive tooth preparation and reducing the risk of harmful effects such as malocclusion and inflammation.
Data Source
AI summary
A system for manufacturing a three-dimensional dental laminate according to the present invention includes at least one processor and a memory. The memory stores instructions causing the at least one processor to perform in response to execution of the instructions, receiving images including a user's teeth, estimating poses of a camera by analyzing the received images, computing sparse 3D points by tracking feature points in the received images and triangulating a three-dimensional position of the feature points based on relative movements among the estimated poses of the camera, generating a three-dimensional tooth modeling file based on the sparse 3D points and adjusting for the size of an actual tooth, generating a three-dimensional dental laminate modeling file based on the adjusted three-dimensional tooth modeling file, and manufacturing a three-dimensional dental laminate based on the generated three-dimensional dental laminate modeling file.