Autologous Root Abutment for Bone Preservation in Dental Implants

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Solution Overview

Problem

Dental implants in esthetic cases with limited bone volume face challenges due to bone resorption and soft tissue recession, often requiring additional bone augmentation procedures for satisfactory outcomes.

Innovation Solution

A method involving the extraction and reattachment of a tooth with an autologous root part attached to a customized or standard abutment, which is connected to a dental implant, utilizing CAD/CAM technology to create a precise fit, maintaining autologous tissue vitality and preventing bone loss through periodontal connective tissue attachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a tooth is extracted in the anterior maxilla, then the implant can be placed, but the surrounding thin bone will be resorbed due to surgical trauma and lack of natural force induction

Engineering Contradiction:

Improveimplant placementVSAvoidbone resorption

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The patent uses an intermediary device (the abutment with connecting portion) that mediates between the implant and the extracted tooth root. This intermediary transmits functional forces from the prosthetic restoration through the implant to the surrounding bone, preventing bone resorption while maintaining the implant placement

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent performs preliminary action by extracting the tooth, preserving the root, and preparing the abutment with a connecting portion before final implant placement. This preliminary preparation allows the root to be reattached later, establishing natural force induction pathways that prevent subsequent bone resorption

Inventive Principle:

Principle #10Preliminary action

2Loss of time

If an immediately placed implant is used, then treatment time is reduced, but bone loss and soft tissue recession still occur

Engineering Contradiction:

Improvetreatment timeVSAvoidbone loss

Core Design Contradiction:

Loss of timeVSLoss of substance

Solution Approach 1:

The patent merges multiple functions into a single integrated solution: the abutment serves both as a connector to the implant and as a support structure for the extracted tooth root. This combination allows immediate implant placement while simultaneously preventing bone loss through the reattached root's natural force induction

Inventive Principle:

Principle #5Merging (Combining)

3Quantity of substance

If a separate bone augmentation procedure is performed, then bone volume is increased for satisfactory outcomes, but treatment complexity and time increase

Engineering Contradiction:

Improvebone volumeVSAvoidprocedure complexity

Core Design Contradiction:

Quantity of substanceVSDevice complexity

Solution Approach 1:

The patent converts the extracted tooth root, which would normally be discarded as waste, into a beneficial element that prevents bone resorption and maintains bone volume. The root serves as a natural force-inducing structure that eliminates the need for separate bone augmentation procedures

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Data Source

PatentEP2967764B1Dental abutment

Publication Date: 2021.05.05 THE RES FOUNDATION FOR THE STATE UNIV OF NEW YORK

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AI summary

A dental treatment method is provided. In this method, a tooth of a patient is extracted and prepared to provide a root part. A root canal in the extracted tooth is prepared and treated. A post of an abutment is fitted into the root canal to attach the root part to the abutment. The abutment having the root part is attached to a dental implant. With the root part attached to the abutment, periodontal connective tissue maintains the jaw bone associated with the extracted tooth, without significant hard tissue loss.