Dental Component Metal Adapter Rotational Stability
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Solution Overview
Problem
Existing dental components with adapters for implants suffer from small abutment-implant contact surfaces and rotational play issues due to inadequate design, leading to instability and potential misalignment.
Innovation Solution
A dental component with a metal adapter featuring convex lobes that abut against concave recesses in both the component body and the implant, reducing rotational play by providing a single secure connection and utilizing flexible arms for secure attachment without additional fastening means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hexagonal first portion and lobed second portion are used in the adapter, then the adapter can be easily assembled with the spacer and implant, but rotational play occurs between the adapter portions and the implant
Solution Approach 1:
The adapter features a single convex lobe that fits into a corresponding concave recess in the implant, creating an asymmetric connection that eliminates rotational play. This asymmetric design provides a unique orientation and prevents rotation while maintaining ease of assembly through the matching geometric forms.
2Device complexity
If the abutment-implant contact surface is small, then the adapter design is simpler, but the connection stability and strength are reduced
Solution Approach 1:
The convex lobe and concave recess are designed with curved, complementary surfaces that provide optimal contact area and stress distribution. The rounded geometric forms increase the effective contact surface between the adapter and implant, enhancing connection strength while maintaining a relatively simple overall adapter design.
3Stability of the object's composition
If multiple connection features are used on the adapter, then rotational play is reduced, but the device complexity increases
Solution Approach 1:
The adapter combines multiple functions into a single convex lobe feature: it provides rotational constraint, structural connection, and stress distribution. By merging these functions into one integrated geometric element rather than using multiple separate features, the design achieves rotational stability without increasing overall device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enhances stability and strength by increasing contact surface area and reducing rotational play, allowing for secure attachment and detachment of the metal adapter without tools, while maintaining a secure fit with the implant.
Implementation Method 1
the metal adapter includes at least one convex lobe adapted to abut against the at least one concave recess in the component body for preventing rotation between the component body and the metal adapter
Implementation Method 2
The metal adapter may comprise at least one flexible arm with a protrusion adapted to press against a side wall and/or snap into a corresponding undercut (if there is any) of the component body for securing the metal adapter to the component body in the coronal-apical direction
Data Source
AI summary
The present invention relates to a dental component (10) for attachment to a dental implant (46), wherein the dental component comprises: a component body (12) including at least one concave recess (38); and a metal adapter (14) removably attachable to the component body, wherein the metal adapter includes at least one convex lobe (16) adapted to abut against the at least one concave recess in the component body for preventing rotation between the component body and the metal adapter, and wherein said at least one convex lobe extends apically of an apical end (34) of the component body when the metal adapter is attached to the component body.