scholarly journals Surface Modification Techniques for Biomedical Grade of Titanium Alloys: Oxidation, Carburization and Ion Implantation Processes

10.5772/36318 ◽  
2012 ◽  
Author(s):  
S. Izman ◽  
Mohammed Rafiq ◽  
Mahmood Anwar ◽  
E.M. Nazim ◽  
R. Rosliza ◽  
...  
Keyword(s):  
Surface Modification ◽  
Ion Implantation ◽  
Titanium Alloys ◽  
Surface Modification Techniques

Surface modification of titanium and titanium alloys by ion implantation

2010 ◽  
Vol 93B (2) ◽  
pp. 581-591 ◽  
Author(s):  
Tapash R. Rautray ◽  
R. Narayanan ◽  
Tae-Yub Kwon ◽  
Kyo-Han Kim
Keyword(s):  
Surface Modification ◽  
Ion Implantation ◽  
Titanium Alloys ◽  
Modification Of Titanium

Ion Implantation as Surface Treatment for Osseointegration of Musculoskeletal Implants: From the Lab to the Clinic

2009 ◽  
Vol 1181 ◽  
Author(s):  
Iñigo Braceras ◽  
Jose Iñaki Alava ◽  
Roberto Muñoz ◽  
Miguel Angel De Maeztu
Keyword(s):  
Surface Modification ◽  
Ion Implantation ◽  
Control Surface ◽  
Implant Surface ◽  
Outermost Surface ◽  
Integration Improvement ◽  
Surface Modification Techniques ◽  
Ion Implanted

AbstractA key process in a successful treatment of patients with a great variety of musculoskeletal implants requires a fast, reliable and consistent osseointegration. Among the parameters that affect this process, it is widely admitted that implant surface topography, surface energy and composition play an important role.Different surface modification techniques to improve osseointegration have been proposed and tested to date, but most focus on microscale features, and few control surface modifications at nanoscale. On the other hand, ion implantation modifies the outermost surface properties in relation to the nanotopography, chemical and physical characteristics at nanoscale. The meta-stable surface that results from the treatment, affects the adsorption of bio-molecules in the very first stages of the implant placement, and thus the signaling pathway that promotes the differentiation and apposition of osteoblast cells.This study aimed at assessing the performance, in terms of osseointegration levels and speed, of ion implanted titanium made implants. The study included several in vitro and in vivo tests. The latter, comprised different insertion periods and both experimental and commercial implants as comparative surfaces. The final stage of the study included clinical trials in human patients.In each and every case, bone integration improvement of tested materials/implants was achieved for the CO ion implanted samples. Furthermore, contact osteogenesis was observed in the ion implanted samples, unlike the Ti control samples, where only distance osteogenesis occurred, being this potentially one of the reasons for their faster healing and osseointegration process.Finally, the use of ion implantation as a surface modification tool that allows for evaluating the effects of nanotopography and composition changes independently is presented.

Surface Modification of Casting Al-Alloy by Plasma-Based Ion Implantation

2001 ◽  
Vol 121 (4) ◽  
pp. 372-377
Author(s):  
Tetsuji Yamanishi ◽  
Yoshihito Hara ◽  
Kingo Azuma ◽  
Etsuo Fujiwara ◽  
Mitsuyasu Yatsuzuka
Keyword(s):  
Surface Modification ◽  
Ion Implantation ◽  
Al Alloy

Properties and Applications of Modified Bacterial Cellulose-Based Materials

2020 ◽  
Vol 16 ◽  
Author(s):  
Munair Badshah ◽  
Hanif Ullah ◽  
Fazli Wahid ◽  
Taous Khan
Keyword(s):  
Surface Modification ◽  
Bacterial Cellulose ◽  
Degree Of Polymerization ◽  
Biomedical Science ◽  
Hydroxyl Groups ◽  
Market Demand ◽  
Ideal Candidate ◽  
Fibrous Network ◽  
Potential Applications ◽  
Surface Modification Techniques

Background: Bacterial cellulose (BC) is purest form of cellulose as it is free from pactin, lignin, hemicellulose and other active constituents associated with cellulose derived from plant sources. High biocompatibility and easy molding into desired shape make BC an ideal candidate for applications in biomedical field such as tissue engineering, wound healing and bone regeneration. In addition to this, BC has been widely studied for applications in the delivery of proteins and drugs in various forms via different routes. However, BC lacks therapeutic properties and resistance to free movement of small molecules i.e., gases and solvents. Therefore, modification of BC is required to meet the research ad market demand. Methods: We have searched the updated data relevant to as-synthesized and modified BC, properties and applications in various fields using Web of science, Science direct, Google and PubMed. Results: As-synthesized BC possesses properties such as high crystallinity, well organized fibrous network, higher degree of polymerization, and ability of being produced in swollen form. The large surface area with abundance of free accessible hydroxyl groups makes BC an ideal candidate for carrying out surface functionalization to enhance its features. The various reported surface modification techniques including, but not limited to, are amination, methylation and acetylation. Conclusion: In this review, we have highlighted various approaches made for BC surface modification. We have also reported enhancement in the properties of modified BC and potential applications in different fields ranging from biomedical science to drug delivery and paper-making to various electronic devices.

scholarly journals Osseointegration Improvement of Co-Cr-Mo Alloy Produced by Additive Manufacturing

Pharmaceutics ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 724
Author(s):  
Amilton Iatecola ◽  
Guilherme Arthur Longhitano ◽  
Luiz Henrique Martinez Antunes ◽  
André Luiz Jardini ◽  
Emilio de Castro Miguel ◽  
...  
Keyword(s):  
Surface Modification ◽  
Additive Manufacturing ◽  
Bone Ingrowth ◽  
Orthopedic Implants ◽  
Coated Sample ◽  
High Mechanical Strength ◽  
Coated Surface ◽  
Surface Modification Techniques ◽  
Almost All ◽  
Cobalt Base

Cobalt-base alloys (Co-Cr-Mo) are widely employed in dentistry and orthopedic implants due to their biocompatibility, high mechanical strength and wear resistance. The osseointegration of implants can be improved by surface modification techniques. However, complex geometries obtained by additive manufacturing (AM) limits the efficiency of mechanical-based surface modification techniques. Therefore, plasma immersion ion implantation (PIII) is the best alternative, creating nanotopography even in complex structures. In the present study, we report the osseointegration results in three conditions of the additively manufactured Co-Cr-Mo alloy: (i) as-built, (ii) after PIII, and (iii) coated with titanium (Ti) followed by PIII. The metallic samples were designed with a solid half and a porous half to observe the bone ingrowth in different surfaces. Our results revealed that all conditions presented cortical bone formation. The titanium-coated sample exhibited the best biomechanical results, which was attributed to the higher bone ingrowth percentage with almost all medullary canals filled with neoformed bone and the pores of the implant filled and surrounded by bone ingrowth. It was concluded that the metal alloys produced for AM are biocompatible and stimulate bone neoformation, especially when the Co-28Cr-6Mo alloy with a Ti-coated surface, nanostructured and anodized by PIII is used, whose technology has been shown to increase the osseointegration capacity of this implant.

Surface modification of metal alloys by plasma immersion ion implantation and subsequent plasma nitriding

2004 ◽  
Vol 186 (1-2) ◽  
pp. 204-208 ◽  
Author(s):  
K.G Kostov ◽  
M Ueda ◽  
M Lepiensky ◽  
P.C Soares ◽  
G.F Gomes ◽  
...  
Keyword(s):  
Surface Modification ◽  
Ion Implantation ◽  
Plasma Nitriding ◽  
Metal Alloys ◽  
Plasma Immersion Ion Implantation
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