Dental Prosthesis Abutment Hole Tolerance for One-Day Implant Occlusion
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Solution Overview
Problem
In one-day implant surgeries, there is a need for a dental prosthesis that can be placed immediately after surgery while accounting for potential deviations in implant placement and ensuring proper occlusion, which existing methods fail to address effectively.
Innovation Solution
A method for designing a digital prosthesis with enlarged abutment holes and a positioning guide that can accommodate implant movement, ensuring proper occlusion by using CAD software to create a digital prosthesis design and guide design, which are then manufactured using 3D processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the abutment hole is designed to fit the digital abutment representation precisely, then the prosthesis positioning accuracy is improved, but the prosthesis cannot accommodate implant placement deviations
Solution Approach 1:
The abutment hole dimensions are modified from the precise digital abutment representation by applying specific enlargements in defined directions. The hole is enlarged more in the occlusal direction than in the apical direction, creating an asymmetric tolerance zone that maintains positioning accuracy while accommodating implant deviations.
Solution Approach 2:
The asymmetric enlargement of the abutment hole is predetermined in the digital design phase based on expected implant placement deviations. This preliminary adjustment ensures that the prosthesis can be placed correctly even if the implant position varies from the planned position, eliminating the need for adjustments during surgery.
2Adaptability or versatility
If the abutment hole shape is enlarged to accommodate implant deviations, then the prosthesis can be placed on implants with position variations, but the occlusion accuracy deteriorates
Solution Approach 1:
The abutment hole is enlarged asymmetrically with different enlargement amounts in different directions. The occlusal enlargement is controlled to be larger than the apical enlargement, creating a directional tolerance zone that accommodates implant deviations while maintaining occlusal contact precision through the guided insertion path.
Solution Approach 2:
The asymmetric abutment hole acts as an intermediary element between the implant and the prosthesis. It provides a tolerance zone that absorbs position variations while the guided insertion path ensures that the prosthesis still achieves correct occlusal contact, effectively mediating between implant position variability and occlusion accuracy requirements.
3Manufacturing precision
If multiple appointments are scheduled for implant surgery and prosthesis placement, then the prosthesis can be precisely fitted, but the treatment time and patient visits increase
Solution Approach 1:
The asymmetric abutment hole design and guided insertion path are predetermined in the digital planning phase before surgery. This preliminary preparation allows the prosthesis to be placed immediately after implant insertion in a single appointment, achieving both precision and time efficiency without requiring multiple follow-up visits for adjustments.
Solution Approach 2:
The prosthesis placement process is segmented into a pre-planned digital design phase and a single surgical execution phase. All complex positioning and fitting considerations are resolved in the digital planning stage, allowing the actual surgical procedure to be completed in one appointment with immediate prosthesis placement.
Data Source
Figure 1A~1D
Figure 2A~2B
AI summary
Disclosed herein is method for designing a dental prothesis and a positioning guide for placing the dental prothesis on implants in the jaw while maintain proper occlusion. In particular the method relates to a method for designing the dental prothesis and the positioning guide prior to implant placement. Accordingly, the disclosure relates to a method and a kit of components suited for one-day implant surgery thereby reducing the time the patient spend in the dentist chair.