Dental Scan Fixture Assembly for Flexible 3D Prosthesis Modeling
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Solution Overview
Problem
Existing dental restoration methods require predefined scan bodies for generating patient-specific prostheses, which are not anatomic and limit restorative flexibility, leading to potential additional visits and compromised aesthetics.
Innovation Solution
A patient-specific qualification and restorative scan assembly using a scan fixture and attachment member, which includes a nonrotational structure and unique identification codes, enabling accurate virtual 3D modeling without predefined scan bodies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If predefined scan bodies are used for generating virtual 3D models, then the scanning process is simplified and standardized, but the restorative flexibility is limited and additional visits may be required
Solution Approach 1:
The patent uses a patient-specific qualification scan assembly that creates a digital copy of the patient's unique anatomical structures (gingival tissue, bone, implant position). This digital model serves as a virtual replica that can be manipulated and used for treatment planning without requiring physical trial fittings, thereby maintaining scanning simplicity while dramatically improving restorative flexibility.
Solution Approach 2:
The qualification scan assembly performs preliminary digital modeling and virtual try-in of prosthetic designs before the actual restorative procedure. This allows the treatment plan to be finalized in advance with perfect anatomical matching, eliminating the need for additional adjustment visits and providing complete restorative flexibility within the initial scanning process.
2Ease of manufacture
If standard healing abutments with round profiles are used, then the healing process is simplified, but the aesthetic outcome is compromised due to mismatch with final prosthesis contours
Solution Approach 1:
The patent applies local quality by creating patient-specific qualification scan assemblies that capture the unique local anatomical characteristics of each patient's gingival tissue and bone structure. The digital models preserve these local variations and use them to design prosthetics with precise contour matching, thereby achieving both simplified healing (through patient-specific customization) and superior aesthetic outcomes (through precise contour replication).
Solution Approach 2:
The system creates accurate digital copies of the patient's specific gingival emergence profile and surrounding anatomy. These digital replicas allow for virtual design of prosthetics that perfectly match the patient's unique anatomical contours, ensuring that the final prosthesis will achieve optimal aesthetic results while the healing process remains simplified through customized patient-specific fixtures.
3Measurement precision
If pre-defined scan bodies are required for digital workflows, then scanning accuracy is maintained, but treatment complexity increases and restorative flexibility is reduced
Solution Approach 1:
The patient-specific qualification scan assembly serves multiple functions: it acts as a scanning reference object for accurate 3D modeling, a virtual try-in fixture for treatment planning, and a digital archive of the patient's unique anatomy. This multi-functional approach maintains scanning accuracy while eliminating the need for separate predefined scan bodies, thereby reducing treatment complexity and increasing restorative flexibility.
Data Source
AI summary
The present disclosure is directed to a computational system and method that receive fixture scan data comprising an image of a scan fixture engaging a scan fixture calibration object and a dental analog having a nonrotational structure orientation, generate, from the fixture scan data, a virtual three-dimensional model of the scan fixture and scan fixture calibration object, and replace, in the virtual attachment member three-dimensional model, the image of the scan fixture with a virtual counterpart of the scan fixture calibration object to form a modified virtual three-dimensional fixture model comprising one or more of a reference coordinate system position relative to a surface of the scan fixture and an orientation of the nonrotational structure relative to a surface of the scan fixture.