Elastic Retention Insert for Dental Implant Misalignment
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Solution Overview
Problem
Current connection mechanisms for dental prostheses and implants face challenges in achieving precise alignment and easy mounting/dismounting, often requiring deformation of retention parts, leading to wear and tear, and difficulty in adapting to varying implant positions due to osseointegration and jaw bone conditions.
Innovation Solution
A connection device featuring a holding shell and retention insert with a ring-shaped design, allowing for a loose initial connection that becomes secure under radial forces, enabling easy handling and compensation for misalignment without significant deformation, and featuring recesses for varying hardness and a projection/groove system for secure yet removable attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If retention parts are deformed to achieve secure connection, then connection strength is improved, but wear and tear increases and lifespan decreases
Solution Approach 1:
The retention insert is designed with elastic properties allowing it to dynamically adapt to radial forces. When radial forces are applied, the retention rim deforms elastically to engage with the holding rim, providing secure connection. When forces are removed, it returns to original shape, avoiding permanent deformation and wear accumulation.
Solution Approach 2:
The patent changes the material parameter of the retention insert from rigid to elastic. This parameter change allows the retention part to achieve secure connection through elastic deformation rather than permanent deformation, thereby reducing wear and extending lifespan while maintaining connection strength.
2Manufacturing precision
If retention parts are made rigid for precise connection, then alignment precision is improved, but adaptability to misalignment decreases
Solution Approach 1:
The retention insert material parameter is changed from rigid to elastic, enabling it to maintain precise geometric features for accurate alignment while simultaneously adapting to misalignments through elastic deformation. This resolves the contradiction by allowing both precision and adaptability.
Solution Approach 2:
The elastic retention insert dynamically adjusts its shape in response to misalignment conditions while maintaining precise engagement features. This dynamic behavior allows the component to adapt to varying implant positions without sacrificing connection precision.
3Ease of operation
If retention parts are made soft and elastic for easy mounting/dismounting, then ease of operation is improved, but connection strength decreases
Solution Approach 1:
The retention insert uses an elastic material with optimized properties that provide both ease of operation and connection strength. The elastic nature allows simple insertion and removal, while the material's mechanical properties ensure strong connection when engaged, resolving the contradiction between softness and strength.
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
Facilitates easy and efficient mounting/dismounting of prosthesis structures, reduces wear on retention parts, and allows for adaptation to specific implant conditions, extending the connection device's lifespan and simplifying the selection process for different hardness levels.
Implementation Method 1
the outer surface of the retention rim of the retention insert is arranged at least partly in a manner spaced from and adjacent to the inner surface of the holding rim of the holding shell when the retention insert is arranged in the retainer of the holding shell and when no radial forces are acting on the holding rim of the holding shell and on the retention rim of the retention insert
Data Source
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AI summary
A connection device for connecting a prosthesis structure with an implant structure comprises a holding shell and a retention insert. The retention insert comprises an end side and a substantially ring-shaped retention rim projecting therefrom. The holding shell comprises an end side and a substantially ring-shaped holding rim projecting therefrom. The holding rim and the end side of the holding shell form a retainer in which the retention insert can be arranged such that an outer surface of the retention rim is adjacent to an inner surface of the holding rim. Moreover, the outer surface of the retention rim is at least partly spaced from and adjacent to the inner surface of the holding rim when the retention insert is arranged in the retainer of the holding shell and when essentially no radial forces are acting on the holding rim and on the retention rim. In that the adjacent outer surface of the retention rim and inner surface of the holding rim are at least partly not contacting each other but are spaced from each other when essentially no radial forces are acting on the holding rim and on the retention rim, it can, i.a., be achieved that the retention insert is connected relatively loosely with the holding shell when the connection device has not yet been placed on the implant structure. This loose connection can allow the retention insert to be relatively easily removed from the holding shell and inserted in the holding shell without having to be substantially deformed or strained in any other way. Thus, it is possible to insert and remove the retention insert gently, which can improve the flexibility and lifetime of the connection device.