Bioactive Ceramic Coatings for Metallic Implants

2012 ◽  
pp. 59-84
Author(s):  
Niko Moritz ◽  
Paula Linderbäck ◽  
Timo Närhi
Keyword(s):  
Ceramic Coatings ◽  
Metallic Implants ◽  
Bioactive Ceramic

Interface Biomechanical Properties between Femora and Bioactive Ceramic Coatings Prostheses during the Initial Implant Stage

2007 ◽  
Vol 336-338 ◽  
pp. 1806-1809
Author(s):  
Liu Ding Tang ◽  
W.M. Zhao ◽  
L.Y. Tian ◽  
Bing Zhe Li
Keyword(s):  
Circumferential Stress ◽  
Biomechanical Properties ◽  
Ceramic Coatings ◽  
Homogeneous Layer ◽  
Ti Alloy ◽  
Biomechanical Models ◽  
Press Fit ◽  
The Press ◽  
Shearing Strength ◽  
Bioactive Ceramic

Biomechanical models of implanting prostheses into femora by means of press fit, i.e. the mechanics of non-homogeneous layer-like composites, have been used to quantify the press-fit strength and circumferential stress of the interface, when femora are partially replaced by different thicknesses of bioactive ceramic coatings on a prosthesis surface during the initial implant stage. The maximum press-fit strength appears on the interface between femora and Ti alloy prostheses with non-coating; the press-fit strength decreases with the increased thickness of the coating. The circumferential stress displayed as the large tensile stress at the femoral side of the interface; the compressive stress, appeared at the side of the coating and Ti alloy prosthesis. The shearing strength, jointing between the prostheses and femora would be bigger with the thinner bioactive ceramic coatings. Considering the biodegradability of bioactive ceramic coatings, e.g. hydroxyapatite, HA, it is concluded that the optimum thickness of the bioactive ceramic coatings will be about 50-60 microns.

Mineralization Behavior of Bioactive Ceramic Coatings Formed by Micro-Arc Oxidation on Titanium

2007 ◽  
Vol 330-332 ◽  
pp. 629-632 ◽  
Author(s):  
Kai Hui Nan ◽  
G.X. Pei
Keyword(s):  
Calcium Phosphate ◽  
Simulated Body Fluid ◽  
Titanium Oxide ◽  
Body Fluid ◽  
Ceramic Coatings ◽  
P Elements ◽  
Micro Arc Oxidation ◽  
Bioactive Ceramic ◽  
The Difference ◽  
Titanium Oxide Films

Titanium oxide films were obtained by MAO at the applied voltages of 250-550V and their bio-mineralization behavior was investigated. The films were composed mainly of TiO2 phases in the form of anatase and rutile and enriched with Ca and P elements in the form of CaTiO3 and amorphous calcium phosphate. Their bio-mineralization behavior was evaluated in a simulated body fluid (SBF). After immersed in SBF for 72 h, white mineralized layers were observed on the samples obtained at high voltages. The bio-mineralized rate of samples increased with the applied voltages, which resulted in the difference on morphology of different samples. The structure and composition of the films have an important effect on their bio-mineralization behavior.

scholarly journals Bioactive Glass and Silicate-Based Ceramic Coatings on Metallic Implants: Open Challenge or Outdated Topic?

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2929 ◽  
Author(s):  
Giulia Brunello ◽  
Hamada Elsayed ◽  
Lisa Biasetto
Keyword(s):  
Ceramic Coatings ◽  
Apatite Formation ◽  
Bioactive Glasses ◽  
Coating Materials ◽  
Bioactive Coatings ◽  
Metallic Implants ◽  
Speed Up

The overall success and long-term life of the medical implants are decisively based on the convenient osseointegration at the hosting tissue-implant interface. Therefore, various surface modifications and different coating approaches have been utilized to the implants to enhance the bone formation and speed up the interaction with the surrounding hosting tissues, thereby enabling the successful fixation of implants. In this review, we will briefly present the main metallic implants and discuss their biocompatibility and osseointegration ability depending on their chemical and mechanical properties. In addition, as the main goal of this review, we explore the main properties of bioactive glasses and silica-based ceramics that are used as coating materials for both orthopedic and dental implants. The current review provides an overview of these bioactive coatings, with a particular emphasis on deposition methods, coating adhesion to the substrates and apatite formation ability tested by immersion in Simulated Body Fluid (SBF). In vitro and in vivo performances in terms of biocompatibility, biodegradability and improved osseointegration are examined as well.

scholarly journals Surface Engineering of Biodegradable Implants: Emerging Trends in Bioactive Ceramic Coatings and Mechanical Treatments

2021 ◽  
Author(s):  
Sagar Nilawar ◽  
Mohammad Uddin ◽  
Kaushik Chatterjee
Keyword(s):  
Biodegradable Polymers ◽  
Surface Engineering ◽  
Ceramic Coatings ◽  
Biodegradable Implants ◽  
Emerging Trends ◽  
Bioactive Ceramic

Biodegradable polymers, metals, and ceramics have emerged as promising alternatives to prepare degradable implants in recent years as better alternatives to conventional non-degradable implants to treat a broad range of...

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