Dental Implant Socket with Annular Recess for Tool Engagement
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Solution Overview
Problem
Existing threaded dental implants face challenges in maintaining retention force during insertion into the jawbone without damaging the socket arrangement, and achieving precise manufacturing tolerances for the retention and disengagement of the insertion tool, which can result in either inadequate retention or difficult disengagement.
Innovation Solution
A threaded dental implant with a socket arrangement featuring separate first and second sections for abutment and insertion tool interaction, including an annular retention recess with tapered sections to manage retention and disengagement forces, and an octagonal cross-sectional arrangement for enhanced contact area and anti-rotational resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the insertion tool engages with the Allen socket using lateral contact surfaces, then the implant can be screwed into the jawbone with required torque forces, but material welding or deformation occurs within the lateral contact surfaces
Solution Approach 1:
The socket arrangement is divided into two completely separate sections: a first section with lateral contact surfaces for abutment positioning and a second section with an Allen socket for insertion tool engagement. This segmentation prevents the insertion tool from damaging the abutment contact surfaces, as each section serves its specific function independently without interfering with the other.
2Device complexity
If the same lateral contact surfaces are used for both abutment positioning and insertion tool engagement, then the device structure is simplified, but the abutment cannot fit into the implant in the determined position due to changes in the socket
Solution Approach 1:
The socket is segmented into two distinct functional zones: the first section provides precise lateral contact surfaces for abutment positioning, while the second section houses the Allen socket for insertion tool engagement. This ensures that the abutment contact surfaces remain undamaged and maintain their geometric precision for accurate abutment positioning.
Solution Approach 2:
Different regions of the socket are given different functional qualities: the first section has smooth lateral contact surfaces optimized for abutment positioning, while the second section has the Allen socket geometry optimized for torque transmission during insertion. Each region is locally optimized for its specific function without compromising the other.
3Reliability
If the external diameter of the insertion tool tips is manufactured with tight tolerances to engage with the annular recess, then reliable retention and controlled disengagement are achieved, but manufacturing costs increase and the process becomes more difficult
Solution Approach 1:
The annular recess is designed with a tapered geometry rather than a cylindrical shape. This parameter change in the recess profile allows the insertion tool tips to engage and disengage more easily, reducing the stringency of manufacturing tolerances required while maintaining reliable retention during insertion and controlled disengagement when needed.
Data Source
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AI summary
A threaded dental implant to be screwed into a jawbone for supporting at least one abutment and/or a dental superstructure, and having a socket arrangement with a first section and a second section with respective geometrical profiles around a longitudinal center axis of the implant. The first section cooperates with the abutment for securing the abutment in a determined position in the implant. The second section cooperates with an insertion tool for screwing the implant into the jawbone. The first section includes an annular coronal contact surface on top of an opening centric at a coronal end of the implant, followed in an apical direction by a first tapered section having a diameter decreasing in the apical direction, by a first cylindrical section, by first anti-rotational elements and by a threaded section.