Dental Prosthesis Fixation Base for Accurate Intraoral Scanning
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Solution Overview
Problem
Existing dental prosthesis installation methods face challenges such as inaccurate scanning in bloody environments, difficulty in aligning multiple scans, and time-consuming processes, particularly in digital workflows for full-arch restorations on implants.
Innovation Solution
A method utilizing geometric dental guides and a fixation base that provides precise reference points, allowing for the installation of a multi-tooth prosthesis in a single session, using tools like a mouthpiece, abutment guide base, and drill guide to ensure accurate implant placement and prosthesis integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple fiducial scans are performed before and after surgery to capture implant positions, then complete anatomical data can be obtained, but the scanning process becomes time-consuming and accuracy deteriorates in bloody surgical environments
Solution Approach 1:
The fixation base is installed during surgery to establish reference points beforehand, eliminating the need for post-surgery scanning. The geometric features of the fixation base are captured pre-surgery or immediately post-surgery when the environment is still clean, avoiding the need to scan in bloody conditions.
Solution Approach 2:
The fixation base acts as an intermediary object that provides stable geometric reference points for capturing implant positions. Instead of scanning directly in the bloody surgical field, the fixation base serves as a clean, stable mediator that can be scanned under optimal conditions and then used to register implant positions.
2Loss of information
If multiple separate scans (before surgery, after surgery, fiducial markers, implants) are performed and stacked together, then complete anatomical information is captured, but the process becomes complex and alignment accuracy deteriorates
Solution Approach 1:
The fixation base combines multiple reference functions into a single object. It provides both fiducial marker functionality and implant position reference in one integrated component, eliminating the need for separate scanning protocols for fiducials and implants.
Solution Approach 2:
The fixation base serves multiple functions: it acts as a fiducial marker for registration, provides geometric reference points for implant positioning, and serves as a stable mounting structure. This multi-functionality reduces the number of separate scanning operations needed.
3Reliability
If traditional scanning protocols are used in bloody surgical environments, then implant positions can be captured, but measurement accuracy deteriorates due to blood and tissue interference
Solution Approach 1:
The scanning of reference points is extracted from the bloody surgical environment. The fixation base is installed during surgery, but the critical scanning operations are performed when the field is still clean, separating the scanning process from the harmful bloody environment.
Solution Approach 2:
Reference points on the fixation base are captured pre-surgery or immediately post-surgery when the surgical field is still relatively clean. This preliminary capture of geometric data avoids the need to perform accurate scanning in the bloody, interfering post-surgical environment.
Data Source
AI summary
Apparatus and method for installing a dental prosthesis to maxillary or mandibular jawbone of a patient are shown and described. The apparatus and method include a fixation base for providing an attachment surface, where the fixation base has at least one feature that is designed to be scannable by an intraoral scanner.