Ceramic Dental Implant Surface Etching for Faster Bone Integration
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Solution Overview
Problem
Ceramic dental implants face challenges in achieving high osteointegrative properties due to their low fatigue stability and tendency to crack, while conventional surface treatments fail to provide effective bonding with bone tissue.
Innovation Solution
Etching the ceramic surface of dental implants with hydrofluoric acid at a temperature of at least 70°C to create a topography with discrete grains or agglomerates removal, forming recesses and cavities, thereby enhancing osteointegrative properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional surface treatments (mechanical roughening, sandblasting, grinding) are applied to ceramic dental implants, then the surface topography is improved for bone apposition, but the ceramic material's inherent low fatigue stability and tendency to crack worsens
Solution Approach 1:
The patent applies hydrofluoric acid etching at controlled temperatures (20-100°C) and time periods (1-60 minutes) to modify the ceramic surface properties without compromising the bulk material integrity. This chemical parameter change creates the desired micro-roughness for osteointegration while preserving the ceramic's fatigue resistance
Solution Approach 2:
The patent replaces mechanical surface treatment methods (sandblasting, grinding, roughening) with a chemical etching process using hydrofluoric acid. This substitution eliminates the mechanical stresses and potential micro-cracks that would compromise the ceramic's fatigue stability, while still achieving the necessary surface topography for bone apposition
2Ease of manufacture
If ceramic materials are used for dental implants to achieve natural tooth color matching, then the aesthetic appearance is improved, but the low fatigue stability and tendency to crack worsens
Solution Approach 1:
The patent uses controlled hydrofluoric acid etching parameters (concentration, temperature, time) to create an optimal balance between surface quality for osteointegration and preservation of the ceramic's mechanical integrity, enabling both aesthetic and functional requirements to be met
Solution Approach 2:
The patent applies surface etching only to the implant portion that contacts bone tissue, while maintaining the bulk ceramic material's integrity for structural strength. This localized treatment allows the ceramic to provide both aesthetic appearance and sufficient mechanical reliability
3Productivity
If the ceramic surface is etched with hydrofluoric acid at high temperature to enhance osteointegrative properties, then the bone integration speed is improved, but the risk of excessive material removal and surface degradation worsens
Solution Approach 1:
The patent employs controlled etching time periods (1-60 minutes) at elevated temperatures (20-100°C) to achieve the desired surface modification for rapid osteointegration while preventing excessive etching that would compromise surface integrity. The process is terminated at the optimal point to balance integration speed and surface quality
Solution Approach 2:
The patent utilizes characterization techniques (SEM, AFM, confocal microscopy) to monitor and control the etching process, providing feedback on surface topography development. This allows real-time adjustment of etching parameters to achieve optimal osteointegrative properties while maintaining surface integrity
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 process results in a highly osteointegrative ceramic surface that fastly integrates into bone, allowing for natural-looking reconstructions with improved mechanical stability and osteoblast differentiation factors expression.
Implementation Method 1
etching the ceramic surface of a dental implant with a solution comprising hydrofluoric acid
Implementation Method 2
the ceramic surface is etched with an etching solution comprising hydrofluoric acid at a temperature of at least 70° C.
Data Source
AI summary
A dental implant having a surface made of a ceramic material. At least a part of the surface includes recesses and cavities formed by removal of discrete grains having an average grain size from 0.1 μm to 0.6 μm and/or agglomerates of these grains from the ceramic material.