Dental Implant Abutment With Occlusal Force Buffering Structure

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Solution Overview

Problem

Conventional dental implants lack occlusal force buffering, leading to issues such as food impaction, fracture of prostheses and fixtures, excessive force transmission to adjacent teeth, and the need for thick and long fixtures to support occlusal forces, failing to replicate the unique movement and function of natural teeth.

Innovation Solution

An abutment for dental implants featuring an inner coffin with helical slit portions and an outer coffin coupled via elastic deformation, along with an occlusal force buffer that includes a longitudinal helical slit structure to buffer vertical and lateral forces, ensuring elastic coupling and threaded engagement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional dental implant uses a firmly coupled abutment to fixture structure, then the implant structure is simple and strong, but it cannot buffer occlusal forces and transmits excessive force to adjacent natural teeth and opposing teeth

Engineering Contradiction:

Improveocclusal force buffering functionVSAvoidabutment structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The abutment is divided into two separate components: an inner coffin coupled to the fixture and an outer coffin coupled to the prosthesis. These two coffins are connected through elastic deformation of the inner coffin's wall, creating a segmented structure that allows independent movement and occlusal force buffering while maintaining overall structural integrity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The inner coffin's wall is designed with elastic deformation capability, allowing it to change its mechanical parameters (rigidity, flexibility) in response to occlusal forces. This parameter change enables the abutment to buffer vertical and lateral occlusal forces while reproducing the unique movement function of natural teeth.

Inventive Principle:

Principle #35Parameter changes

2Strength

If a conventional dental implant lacks occlusal force buffering, then the structure is simpler, but it requires a thick and long fixture to sufficiently support occlusal force

Engineering Contradiction:

Improveocclusal force support capabilityVSAvoidfixture length

Core Design Contradiction:

StrengthVSLength of moving object

Solution Approach 1:

The elastic inner coffin wall acts as an intermediary element between the fixture and the outer coffin. It absorbs and buffers occlusal forces through elastic deformation, reducing the need for an excessively long fixture while maintaining sufficient strength to support occlusal loads.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If a conventional dental implant transmits occlusal force directly to the fixture and fixing screw, then the force transmission path is direct and simple, but it may lead to fracture of the prosthesis, fixture, or fixing screw

Engineering Contradiction:

Improvefracture resistanceVSAvoidforce transmission path complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The elastic inner coffin wall provides beforehand cushioning by absorbing occlusal forces through elastic deformation before they can be transmitted directly to the fixture and fixing screw. This cushioning effect prevents excessive force transmission that could lead to fracture of critical components.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

4Reliability

If a conventional dental implant lacks occlusal force buffering, then the structure is simpler, but it causes food impaction between the implant and adjacent natural teeth

Engineering Contradiction:

Improvefood impaction preventionVSAvoidmastication function

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The inner coffin is designed to dynamically respond to occlusal forces through elastic deformation, allowing the abutment to reproduce the unique movement function of natural teeth. This dynamic behavior prevents food impaction by creating slight movement gaps during mastication, while maintaining proper contact when no force is applied.

Inventive Principle:

Principle #15Dynamics

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 abutment effectively reduces food impaction, fractures, and excessive force transmission, replicating the natural tooth's movement and function, allowing for thinner fixtures and reducing stress on adjacent teeth.

Implementation Method 1

an elastic deformation structure formed by providing a plurality of slit portions on an outer surface of the inner coffin to extend continuously over a predetermined section from an upper end of the inner coffin

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Data Source

PatentEP4678139A1Abutment for dental implant

Publication Date: 2026.01.14 DENFLEX CO LTD

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AI summary

Proposed is an abutment for a dental implant coupled to a fixture for a dental implant implanted in the alveolar bone, and the abutment for a dental implant includes an inner coffin which has a first end coupled to the fixture and has an axial hole formed to extend downward from an upper end surface of a second end thereof, an outer coffin coupled to an outer surface of an upper portion of the inner coffin, and an occlusal force buffer which is provided with an occlusal force buffering portion along a longitudinal direction thereof, and is inserted through an axial opening formed on an upper end surface of the outer coffin to be disposed within the axial hole of the inner coffin.