Tribocorrosion behavior of bio-functionalized highly porous titanium

Toptan, Fatih; Alves, Alexandra Manuela Vieira Cruz Pinto; Pinto, A. M. P.; Ponthiaux, Pierre

doi:10.1016/j.jmbbm.2017.01.006

Cited by 46 publications

(47 citation statements)

References 63 publications

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“…The authors concluded that cell viability/proliferation was improved on PEO treated samples. Some of the present authors have also reported recently that bio‐functionalization of highly porous Ti by MAO improved the tribocorrosion behavior owing both to improved corrosion behavior through the oxide layers formed on the inner and outer pore surfaces, and improved wear resistance through the increased hardness of the anodic layers. However, surface functionalization parameters should be carefully selected in order to attain the desired properties.…”

Section: Introductionsupporting

confidence: 59%

“…After bio‐functionalization, the surfaces exhibited the typical multiscale porous volcano‐like structure and the grinding marks were not distinguishable. Furthermore, the surface roughness ( S a ) increased to 1.27 μm after bio‐functionalization. SEM observations also revealed that bio‐functionalization was also successful on the porous samples surfaces since the pore surfaces were effectively covered by the anodic layers [Figure (e,f)].…”

Section: Resultsmentioning

confidence: 99%

“…The grinded surfaces were homogenized by etching where the surface roughness ( S a ) increased from 0.40 to 0.63 μm after etching. However, as‐etched Ti surfaces [Figure (a)] still presented grinding marks.…”

Section: Resultsmentioning

confidence: 99%

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Influence of macroporosity on NIH/3T3 adhesion, proliferation, and osteogenic differentiation of MC3T3‐E1 over bio‐functionalized highly porous titanium implant material

et al. 2018

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Highly porous Ti implant materials are being used in order to overcome the stress shielding effect on orthopedic implants. However, the lack of bioactivity on Ti surfaces is still a major concern regarding the osseointegration process. It is known that the rapid recruitment of osteoblasts in bone defects is an essential prerequisite for efficient bone repair. Conventionally, osteoblast recruitment to bone defects and subsequent bone repair has been achieved using growth factors. Thus, in this study highly porous Ti samples were processed by powder metallurgy using space holder technique followed by the bio-functionalization through microarc oxidation using a Ca- and P-rich electrolyte. The biological response in terms of early cell response, namely, adhesion, spreading, viability, and proliferation of the novel biofunctionalized highly porous Ti was carried out with NIH/3T3 fibroblasts and MC3T3-E1 preosteoblasts in terms of viability, adhesion, proliferation, and alkaline phosphatase activity. Results showed that bio-functionalization did not affect the cell viability. However, bio-functionalized highly porous Ti (22% porosity) enhanced the cell proliferation and activity. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2018.

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Section: Introductionsupporting

confidence: 59%

Section: Resultsmentioning

confidence: 99%

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Influence of macroporosity on NIH/3T3 adhesion, proliferation, and osteogenic differentiation of MC3T3‐E1 over bio‐functionalized highly porous titanium implant material

et al. 2018

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“…[69] This is promising from a biomedical point of view, as porosity seems not to decrease Ti corrosion resistance. [73] As shown above, corrosion resistance of porous titanium implants is not completely explained. They studied the influence of porosity of Ti scaffolds ranged from 45 to 75% on corrosion resistance.…”

Section: Corrosion Resistancementioning

confidence: 95%

Porous Titanium Implants: A Review

2018

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Titanium and its alloys are commonly used in almost all disciplines of medicine because of their sufficient biocompatibility and meeting of mechanical requirements. However, dense metallic biomaterials represent only an interfacial connection with host tissue, may develop stress shielding which causes ingrowth of the fibrous tissue, and are prone to microbial adhesion and development of biomaterial associated infections. Therefore, development of a new, porous titanium biomaterial is proposed to improve an implant's interconnection with bone, provide better stabilization, and reduce the risk of the loss of the implant. In this review, recent findings in porous titanium biomaterials engineering are discussed, including the structural and strengthening aspects of titanium alloys. The porosity and design of porous structures, as well as the optimization process are also described. An extensive part of this section is dedicated to manufacturing processes. The next section of the review is devoted to osseointegration of porous implants and surface treatment processes, whose purpose are antibacterial activity or local drug delivery. Summarizing the article, some future predictions have been presented.

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“…It has also been reported that the number of pores can reach as high as 7.7 mm -2 × 10 8 mm -2 . Therefore, the hole filling technology is urgently needed to enhance the corrosion resistance, antipollution and electrical insulating properties, keeping the surface of the aluminium alloys in a good state [12].…”

Section: Introductionmentioning

confidence: 99%

Sealing Holes of an Anodic Aluminum Oxide Alloy by Nanotitania for Enhanced Corrosion Resistance

Chang¹,

Wei²,

Chen³

et al. 2017

Nano Res Appl

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This study aims to explore an effective, novel, and environmentally friendly method that overcomes the limitations and shortcomings existing in the traditional approaches for sealing holes on aluminum alloy. Herein, the holesealing treatment of an Anodic Aluminum Oxide (AAO) alloy film using two types of titanium sources with a high stability in aqueous electrolytes, that is, ammonium fluorotitanate and titanium potassium oxalate, to electrically deposit nanotitania on the film surface was investigated. The nanotitania deposited electrochemically for hole sealing has the advantages of the high physiochemical stability, low cost, and non-toxicity, which can thus readily improve the corrosion resistance of the sealed AAO in an environmentally friendly manner. Such sealed AAO can also result in a UV-shielding performance due to the commonly-known UV absorption properties of nanotitania. The hole sealing effect is also compared between the two systems involving the two types of titanium sources at different concentrations, voltages and time. The optimization of the preparation conditions is achieved by means of weight loss measurements. Potentiodynamic scan and electrochemical impedance spectroscopy results reveal that the hole-sealed sample-based on ammonium fluorotitanate shows a higher corrosion resistance as compared to the one based on titanium potassium oxalate. Significantly, the optimal conditions for the hole sealing of the aluminum alloy are evidenced to be the concentration of ammonium fluorotitanate of 0.1 mol/L, AC voltage of 3 V, and time of 900 s.

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Tribocorrosion behavior of bio-functionalized highly porous titanium

Cited by 46 publications

References 63 publications

Influence of macroporosity on NIH/3T3 adhesion, proliferation, and osteogenic differentiation of MC3T3‐E1 over bio‐functionalized highly porous titanium implant material

Influence of macroporosity on NIH/3T3 adhesion, proliferation, and osteogenic differentiation of MC3T3‐E1 over bio‐functionalized highly porous titanium implant material

Porous Titanium Implants: A Review

Sealing Holes of an Anodic Aluminum Oxide Alloy by Nanotitania for Enhanced Corrosion Resistance

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