Angled Abutment Position Transfer Device for Dental Implants
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Solution Overview
Problem
The challenge lies in accurately transferring the rotational position of angled abutments from a model to implants installed in the jawbone, especially when implants are tilted, as existing methods struggle to control both the depth and rotational position simultaneously, leading to potential misalignment and improper fit between the abutment and the dental restoration.
Innovation Solution
A device comprising an attachment member, an abutment holder, and a connecting member that temporarily attaches to an implant, holds the angled abutment, and connects it to a fixed spatial relationship, allowing for precise alignment of the abutment relative to another implant, facilitating the transfer of the abutment's position from a model to the jawbone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional surgery methods are used to install tilted implants and attach angled abutments, then the implants can be positioned to avoid anatomical structures and provide sufficient space, but the rotational position of the abutment relative to the implant cannot be precisely controlled, leading to misalignment with the dental restoration
Solution Approach 1:
The patent applies preliminary action by pre-attaching the angled abutment to the implant in the model before surgery, and pre-assembling the transfer device with all components (attachment member, abutment holder, connecting member) in their correct spatial relationships. This allows the rotational position to be predetermined and transferred accurately to the patient's jawbone during surgery without requiring complex real-time alignment adjustments.
Solution Approach 2:
The patent uses an intermediary transfer device that mediates between the model (with pre-positioned abutment) and the patient's implant. The attachment member attaches to the implant, the abutment holder holds the angled abutment, and the connecting member fixably connects them in a fixed spatial relationship, transferring the precise rotational position without requiring direct manipulation during surgery.
2Manufacturing precision
If the abutment is attached to the implant before the dental restoration, then the abutment can be secured to the implant, but the depth of the implant and the rotational position of the abutment cannot be controlled simultaneously, making it difficult to achieve proper fit
Solution Approach 1:
The transfer device allows the abutment-implant-fit to be predetermined and tested in the model before surgery. The attachment member, abutment holder, and connecting member are pre-assembled in the correct configuration, so that when attached during surgery, the proper fit is achieved automatically without requiring complex real-time adjustments to implant depth or abutment rotation.
Solution Approach 2:
The patent segments the alignment control into separate functional components: the attachment member for implant attachment, the abutment holder for abutment positioning, and the connecting member for fixed spatial connection. This segmentation allows each component to be optimized for its specific function while working together to achieve precise fit and orientation.
3Measurement precision
If indexing means are used on both the implant and abutment to provide fixed rotational relationship, then the rotational position can be manually adjusted, but it becomes even more cumbersome to achieve correct rotational positioning when implant depth must also be controlled
Solution Approach 1:
The transfer device applies preliminary action by pre-establishing the correct rotational relationship between the attachment member and abutment holder using indexing means during model preparation. This pre-set rotational alignment is then transferred to the patient's implant during surgery, eliminating the need for difficult real-time adjustments of both implant depth and rotational position simultaneously.
Solution Approach 2:
The transfer device acts as an intermediary that carries the pre-determined rotational alignment from the model to the patient's implant. The indexing means on the attachment member and abutment holder work together through this intermediary to transfer the precise rotational relationship without requiring the surgeon to manually coordinate both depth and rotation control.
Data Source
AI summary
A method is provided for transferring the position of an angled abutment from a model to an implant installed in the jawbone of a patient. The method can include attaching an attachment member to the first implant replica, attaching an angled abutment to the second implant replica, attaching an abutment holder to the angled abutment, connecting a connecting member to the attachment member, connecting the connecting member to the abutment holder, releasing the attachment member from the first implant replica, and releasing the angled abutment from the second implant replica.