Vacuum Plasma Surface Modification of 3Y-TZP Zirconia Implants

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Solution Overview

Problem

Dental 3Y-TZP zirconia implants face challenges in achieving improved chemical activity, cell adhesion, and antibacterial effects, which are essential for long-term functionality and biocompatibility.

Innovation Solution

The surface of 3Y-TZP zirconia materials and implants is modified using plasma treatment under vacuum conditions, specifically with a carrier gas mixture of N2 or N2/Ar, to enhance cell proliferation, adhesion, motility, and antibacterial properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional zirconia implants are used, then manufacturing simplicity is maintained, but cell adhesion and antibacterial effects are insufficient

Engineering Contradiction:

Improvecell adhesionVSAvoidsurface modification complexity

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent applies plasma treatment under vacuum conditions with specific gas compositions (N2, N2/Ar mixtures) to modify the surface properties of zirconia implants. By controlling plasma parameters such as gas type, pressure, and treatment duration, the surface chemistry and topography are altered to enhance cell adhesion and antibacterial effects without changing the bulk material composition

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent utilizes vacuum plasma treatment in an inert or controlled atmosphere to modify the zirconia surface. The vacuum environment prevents unwanted oxidation and allows precise control over plasma-generated reactive species that interact with the surface, creating a controlled modification process that enhances biocompatibility

Inventive Principle:

Principle #39Inert atmosphere (Inert environment)

2Reliability

If conventional zirconia implants are used, then manufacturing simplicity is maintained, but antibacterial effects are insufficient

Engineering Contradiction:

Improveantibacterial effectVSAvoidsurface modification complexity

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent employs plasma treatment with specific gas compositions (N2, N2/Ar) and controlled vacuum conditions to alter the surface properties of zirconia implants. By adjusting plasma parameters, the surface is modified to exhibit enhanced antibacterial properties through increased chemical reactivity and modified surface energy, without affecting the bulk material

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces conventional mechanical surface treatment methods with plasma-based chemical modification. Instead of mechanical abrasion or coating, the invention uses plasma-generated reactive species to chemically modify the surface, achieving antibacterial effects through surface chemistry rather than physical structure

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If plasma treatment is applied to enhance surface properties, then cell adhesion and antibacterial effects are improved, but treatment time and energy consumption increase

Engineering Contradiction:

Improvechemical reactivityVSAvoidtreatment time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent optimizes plasma treatment parameters including gas composition (N2, N2/Ar ratios), vacuum pressure levels, and plasma power to achieve effective surface modification in minimal time. By carefully controlling these parameters, the treatment achieves the desired chemical reactivity and surface properties without excessive treatment duration

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent determines optimal treatment durations that provide sufficient surface modification without excessive treatment time. Through systematic investigation of treatment time effects, the invention identifies the minimum effective treatment duration that achieves the desired biological properties, avoiding both under-treatment and over-treatment

Inventive Principle:

Principle #16Partial or excessive action

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 plasma-treated zirconia surfaces exhibit improved cell adhesion, antibacterial effects, and chemical reactivity, reducing inflammatory reactions and enhancing the success rate of implant surgery.

Implementation Method 1

The surface of 3Y-TZP zirconia materials and implants is modified using plasma treatment under vacuum conditions

Methodology Applied

Scientific EffectPlasma: Plasma

Data Source

PatentUS20250099342A1Surface modification method of zirconia material using vacuum plasma

Publication Date: 2025.03.27 AJOU UNIV IND ACADEMIC COOP FOUND

AI summary

The present invention relates to a dental 3Y-TZP zirconia material whose surface is modified by plasma treatment, an implant and a manufacturing method thereof. The 3Y-TZP zirconia material and implant manufactured according to the present invention have improved cell adhesion and antibacterial effects, thereby improving biocompatibility and minimizing inflammatory reactions of the user.