Dental Implant Plate Thread Design for Stability
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Solution Overview
Problem
Dental implants face challenges in achieving stable and non-tilting insertion into the jawbone, particularly during chewing, due to insufficient mechanical stability and risk of displacement.
Innovation Solution
The dental implant features a plate thread design with thread flanks perpendicular to the longitudinal axis, providing increased resistance to longitudinal movements and axial displacement, combined with a microthread and torsion in the thread form for enhanced bone ingrowth and a cervical groove to minimize bacterial penetration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional thread design is used for the post part, then the implant can be inserted into the jawbone, but the mechanical stability and resistance to longitudinal movements are insufficient
Solution Approach 1:
The thread design parameters are fundamentally changed by making the thread flanks perpendicular to the longitudinal axis instead of the conventional angled design. This parameter change creates a plate thread with increased flank depth (at least 1.25 times, preferably about 2 times greater than the flank height), which dramatically improves resistance to longitudinal movements and mechanical stability while maintaining ease of insertion.
2Reliability
If the thread flanks are made perpendicular to the longitudinal axis, then resistance to longitudinal movements is maximized, but the manufacturing complexity increases
Solution Approach 1:
The thread design transitions from a conventional three-dimensional helical thread to a two-dimensional plate thread configuration where the flanks are perpendicular to the longitudinal axis. This dimensional change simplifies manufacturing while maximizing the resistance to longitudinal movements, as the perpendicular orientation creates a flat interface that is easier to machine and assemble compared to complex angled threads.
3Device complexity
If a single-piece design is used for the implant, then the structure is simpler, but the mechanical stability under chewing loads is reduced
Solution Approach 1:
The implant is divided into two separate components: a post part with the specialized plate thread for insertion into the jawbone, and an abutment part for attaching the prosthetic tooth. This segmentation allows each component to be optimized independently - the post part focuses on mechanical stability and bone integration, while the abutment part focuses on prosthetic attachment - resulting in superior overall mechanical stability under chewing loads compared to a single-piece design.
Data Source
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AI summary
The invention relates to a dental implant (1) comprising a post part (2) which can be inserted into a jawbone and comprising a superstructure part (4) which is paired with said post part and onto which a dental prosthesis can be attached. The aim of the invention is to allow the dental implant to be inserted into the jawbone in a particularly stable and non-tipping manner as part of a minimally invasive operation. According to the invention, the post part comprises a thread for this purpose, said thread being designed as a plate thread in at least one thread section (18), in which at least one of the thread flanks (30) has a flank depth that is at least 1.25 times, preferably approximately 2 times, greater than the flank height specified by the height of the corresponding end face (32).