Transgingival Dental Implant Ring With Micro-Nano Bacteriostatic Surface
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Solution Overview
Problem
Current dental implants lack the ability to effectively prevent periodontitis and accelerate gingival-implant interface integration, as existing bacteriostatic surface technologies fail to maintain efficacy in complex oral environments and face challenges in quality control, sterilization, and long-term preservation, leading to difficulties in obtaining medical device registration.
Innovation Solution
A dental implant surface is designed with a three-level micro-nano composite structure created by plasma injection of bioactive elements like C, N, Ca, and P, combined with femtosecond laser machining, which enhances corrosion and wear resistance while promoting adhesion and proliferation of gingival fibroblasts and mesenchymal stem cells, while inhibiting oral bacteria adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a chemical grafting method is used to improve bacteriostatic performance of the implant surface, then the bacteriostatic ability is enhanced, but the implant cannot meet quality control, sterilization and long-term preservation requirements
Solution Approach 1:
The patent replaces chemical grafting methods with physical plasma immersion ion implantation and femtosecond laser machining. The plasma process physically embeds bacteriostatic elements (Ag, Zn, Cu) into the implant surface, while the laser creates micro-nano structures. This physical approach eliminates chemical coating issues, enabling better quality control, sterilization compliance, and long-term preservation while maintaining bacteriostatic efficacy.
Solution Approach 2:
The patent creates a composite surface structure combining multiple bacteriostatic elements (Ag, Zn, Cu) embedded in the implant material matrix. This composite approach provides sustained release of bacteriostatic ions while maintaining structural integrity, meeting both bacteriostatic performance requirements and medical device quality standards.
2Object-affected harmful factors
If a chemical coating is applied to the implant surface, then bacteriostatic efficacy is improved, but the coating cannot maintain efficacy in complex oral environment for long time
Solution Approach 1:
The plasma immersion ion implantation process pre-embeds bacteriostatic elements (Ag, Zn, Cu) deep into the implant surface (50-200 nm depth), creating a reservoir that releases ions continuously over time. This preliminary embedding ensures long-term efficacy in the complex oral environment, unlike surface coatings that degrade quickly.
Solution Approach 2:
The femtosecond laser creates a porous micro-nano structured surface that increases surface area and provides channels for controlled release of bacteriostatic elements. This porous structure maintains efficacy long-term by enabling sustained ion release while preventing bacterial adhesion.
3Productivity
If the implant surface is designed to promote cell adhesion, then gingival-implant interface integration is accelerated, but the risk of bacterial adhesion increases
Solution Approach 1:
The patent applies different surface properties to different scales: macroscopically smooth surface for overall hygiene, microscopically structured surface (1-10 μm features) for cell adhesion promotion, and nanoscopically rough surface (10-100 nm features) for bacterial adhesion prevention. This multi-scale local quality differentiation simultaneously accelerates gingival-implant integration and reduces bacterial adhesion risk.
Solution Approach 2:
The patent transitions from two-dimensional surface coating to three-dimensional micro-nano structured surface with controlled porosity. This dimensional transformation creates a hierarchical structure that selectively interacts with cells and bacteria based on their size, promoting cell adhesion while preventing bacterial colonization.
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 surface effectively reduces the risk of periodontal infection by promoting interface integration and preventing bacterial adhesion, improving implant success rates without conflicting with existing production processes or registration requirements.
Implementation Method 1
bioactive, wear-resistant or corrosion-resistant C, N, Ca and P elements are injected into a transgingival part of an implant tooth by a plasma injection method
Implementation Method 2
a three-level micro-nano structure is prepared at a part in which the elements are injected
Implementation Method 3
promoting adhesion and proliferation of gingival fibroblasts and mesenchymal stem cells
Implementation Method 4
inhibiting adhesion of various oral bacteria to a nano structure ring at a transgingival part
Data Source
AI summary
Provided are a dental implant with a nano bacteriostatic structure ring at a transgingival part and a machining method thereof. The transgingival part of the dental implant has a three-level micro-nano composite structure, and the three-level micro-nano composite structure endows a surface of the transgingival part of the implant with functions of promoting adhesion and proliferation of a gingival fibroblast and a gingival mesenchymal stem cell and inhibiting adhesion and growth of various oral bacteria. A preparation method thereof comprises: firstly, injecting bioactive, wear-resistant or corrosion-resistant C, N, Ca and P elements into the transgingival part of the dental implant by a plasma injection method; and then, preparing the three-level micro-nano composite structure at a part in which the elements are injected.