Dental Implant Interface Assembly with Auxiliary Cutting Guide
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Solution Overview
Problem
Existing interface parts for dental implants have pillars with fixed heights, which may not be suitable for all types of dental prostheses, requiring technicians to modify the pillars with markings for cutting, leading to precision issues and potential weakening of the retention mechanism.
Innovation Solution
An assembly comprising an interface part with a tubular shape and an auxiliary part that can be coupled to the interface part, allowing for precise cutting of the pillar to a variable height without modifying the interface part, using the auxiliary part's planar face to define the cutting plane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If markings are provided on the pillar to indicate cutting positions, then the technician can identify cutting heights, but the pillar structure is modified and retention grooves are weakened
Solution Approach 1:
A separate auxiliary part with markings is introduced as an intermediary element. This auxiliary part couples to the interface part and provides the markings without modifying the pillar structure itself. The markings are placed on the auxiliary part's peripheral surface, allowing cutting height identification while preserving the pillar's retention grooves and structural integrity.
2Ease of manufacture
If the technician uses their own machining implements for cutting, then cutting can be performed, but precise cutting is difficult due to small dimensions and lack of guidance
Solution Approach 1:
The auxiliary part serves as a guiding intermediary that provides a planar face with markings indicating the precise cutting plane. This planar face offers a stable reference surface for the cutting tool, enabling accurate cutting at the desired height without requiring complex custom machining implements from the technician.
Solution Approach 2:
The auxiliary part is designed with specific geometric parameters (planar face orientation, marking positions) that define the cutting parameters. By changing the auxiliary part's geometry, different cutting heights and orientations can be achieved, providing precision control over the cutting operation.
3Ease of manufacture
If the pillar height is fixed, then manufacturing is simplified, but the interface part cannot be adapted to different prosthesis types and dimensions
Solution Approach 1:
The solution segments the interface part into two components: the main interface part with the pillar (manufactured with fixed dimensions) and a separate auxiliary part (selected based on required cutting height). This segmentation allows the main component to be manufactured simply while providing adaptability through the selectable auxiliary parts with different geometries.
Solution Approach 2:
The auxiliary part serves multiple functions: it provides the cutting guide planar face, displays the cutting height markings, and couples to the interface part. By selecting different auxiliary parts, the same interface part can be adapted to different prosthesis requirements, achieving universality without complicating the main component's manufacturing.
Data Source
AI summary
A method involves an assembly for forming an interface part for dental implants with variable height. The assembly comprises a tubular interface part with a central axis and an auxiliary part which is coupled to the interface part. In a coupled position: the auxiliary part is integral with the interface part at least in a sense of direction parallel to the central axis; a final segment of the abutment protrudes through an upper end of the auxiliary part; and a peripheral surface outside the abutment comprises at least one planar face in a plane which intersects with the final segment of the abutment and the central axis. The planar face of the auxiliary part serves as a guide for cutting the abutment at a specific height.