Multi-Unit Abutment Angular Adjustment for Zygomatic Implants
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Solution Overview
Problem
Existing dental abutments struggle to form a proper angle between the implant screw and the prosthetic tooth, particularly in cases like zygomatic implants where there is a significant distance between the implant site and the prosthetic site.
Innovation Solution
A multi-unit abutment apparatus that includes an implant screw with a first threaded portion for engaging the bone, an elongated extension portion with a conical bottom for engaging the implant screw, and an abutment portion with an anti-rotation feature and a mounting portion for the prosthetic tooth, allowing for various degrees of angular adjustment between the implant screw and the prosthetic tooth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-unit abutment is used to connect the implant screw to the prosthetic tooth, then the structure is simple, but the ability to form proper angles between the implant screw and prosthetic tooth is limited
Solution Approach 1:
The abutment is divided into multiple independent units: an implant screw with first threaded portion, an elongated extension portion with conical bottom and socketed top, and an abutment portion with anti-rotation feature. This segmentation allows each component to be optimized independently and connected at specific angles, enabling proper angular alignment between the implant screw and prosthetic tooth while maintaining structural simplicity through modular assembly
Solution Approach 2:
The multi-unit abutment system provides dynamic angular adjustment capability by allowing the elongated extension portion to be positioned at various angles relative to the implant screw's longitudinal axis. This dynamic configuration enables the abutment to adapt to different anatomical requirements and achieve optimal angles for both the implant screw insertion and prosthetic tooth placement
2Ease of operation
If zygomatic implants are used to reach distant prosthetic sites, then the anchoring capability is improved, but the distance between implant and prosthetic sites creates alignment challenges
Solution Approach 1:
The elongated extension portion introduces an additional spatial dimension by extending along the longitudinal axis of the implant screw while allowing angular deviation. This dimensional extension enables the abutment to bridge the large distance between the zygomatic implant anchor point and the prosthetic tooth site, facilitating proper alignment despite the extended reach required
Data Source
AI summary
A multi-unit abutment apparatus for prosthetic teeth includes an implant screw having a first threaded portion for engaging and anchoring in the osseous bone. An elongated extension portion has a conical bottom portion for engaging the implant screw and having a socketed top. An abutment portion has an anti-rotation portion configured to engage the socketed top of the elongated extension portion in a non-rotational arrangement. The abutment portion has a body having a screw bore in axial parallel with the elongated extension portion and the implant screw and includes a mounting portion having a seat configured for seating the prosthetic tooth at between zero and sixty degrees.