Formation of bioactive coatings on a Ti–6Al–7Nb alloy by plasma electrolytic oxidation

Krząkała, A.; Sluzalska, Katarzyna Dominika; Widziolek, Magdalena; Szade, J.; Winiarski, A.; Dercz, Grzegorz; Kazek, Alicja; Tylko, Grzegorz; Michalska, Joanna; Iwaniak, A.; Osyczka, Anna M.; Simka, Wojciech

doi:10.1016/j.electacta.2012.07.075

Cited by 44 publications

(16 citation statements)

References 72 publications

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“…Since the use of titanium emerged in the manufacture of medical, dental implants, and osseointegration principles, several modifications to this material have appeared [1][2][3][4][5]. These modifications aimed to increase the mechanical resistance and corrosion as well as improve the Materials 2020, 13, 1604; doi:10.3390/ma13071604 www.mdpi.com/journal/materials biological responses related to bone-to-implant contact by increasing the surface area.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, cells of the osteoblastic lineage are attracted more quickly and effectively, especially to regions of lower bone tissue density [6,7]. Combining the favorable characteristics of microstructural and biological behavioral aspects is a concern related to this range of texturing options [3][4][5], because the literature has shown that some of these methods alter titanium mechanical strength, electrochemical behavior, and bone healing responses [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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Comparison between Plasma Electrolytic Oxidation Coating and Sandblasted Acid-Etched Surface Treatment: Histometric, Tomographic, and Expression Levels of Osteoclastogenic Factors in Osteoporotic Rats

Momesso

Santos

et al. 2020

Materials

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Plasma electrolytic oxidation (PEO) has been a promising surface coating with better mechanical and antimicrobial parameters comparing to conventional treatment surfaces. This study evaluated the peri-implant bone repair using (PEO) surface coatings compared with sandblasted acid (SLA) treatment. For this purpose, 44 Wistar rats were ovariectomized (OVX-22 animals) or underwent simulated surgery (SS-22 animals) and received implants in the tibia with each of the surface coatings. The peri-implant bone subsequently underwent molecular, microstructural, bone turnover, and histometric analysis. Real-time PCR showed a higher expression of osteoprotegerin (OPG), receptor activator of nuclear kappa-B ligand (RANKL), and osteocalcin (OC) proteins in the SLA/OVX and PEO/SS groups (p < 0.05). Computed microtomography, confocal microscopy, and histometry showed similarity between the PEO and SLA surfaces, with a trend toward the superiority of PEO in OVX animals. Thus, PEO surfaces were shown to be promising for enhancing peri-implant bone repair in ovariectomized rats.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison between Plasma Electrolytic Oxidation Coating and Sandblasted Acid-Etched Surface Treatment: Histometric, Tomographic, and Expression Levels of Osteoclastogenic Factors in Osteoporotic Rats

Momesso

Santos

et al. 2020

Materials

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“…MAO treatments have been applied to Ti surfaces targeting an improvement of its bioactive and osseointegrative responses through the formation of a Ca-and P-rich oxide film [1,6]. Recently, Krzakala et al [12], Kazek-Kesik et al [12,13] and Tsutsumi et al [14] have obtained noticeable improvements of hard-tissue compatibility in some commercial Ti-based alloys by using MAO treatment. Furthermore, MAO-treated Ti surfaces have also exhibited better tribocorrosion resistance, avoiding the release of potential harmful debris from the implant surface to the human body, as reported by Alves et al [10], Oliveira et al [8] and Felgueiras et al [15].…”

Section: Introductionmentioning

confidence: 99%

Growth mechanisms of Ca- and P-rich MAO films in Ti-15Zr-xMo alloys for osseointegrative implants

Corrêa

Rocha

Ribeiro

et al. 2018

Surface and Coatings Technology

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In this study, a micro-arc oxidation treatment was applied to Ti-15Zr-xMo (x = 0, 5, 10 and 15 wt%) alloys to produce porous oxide layers enriched with bioactive ions (calcium and phosphorus) for use as osseointegrative implants. Biocompatibility studies, namely metabolic activity, mineralization and differentiation studies were conducted with human osteoblastic cell line SAOS-2. A typical porous coating was obtained in all samples, with similar morphologies and thicknesses, which were found to be dependent on the maximum applied voltage. Calcium and phosphorus ions were incorporated into the films, as indicated by EDX analysis. Chemical analyses indicated that the films were composed preferentially of Ti and Zr oxides. XRD patterns revealed mostly substrate Ti phases. However, cross-sectional TEM imaging and automated phase and orientation mapping showed distinct amorphous and nanocrystalline regions within the films, with a higher fraction of Ca atoms incorporated in the outer layer. After immersion in Hanks' Balanced Salt Solution (HBSS) for seven days, small amounts of calcium phosphate precipitates were observed at the surface of all samples which were confirmed by ICP-AES measurements, indicating that the MAO treatment possibly introduced a considerable bioactive response in the samples. Biological results indicate that Ti-15Zr-15Mo MAO-treated surfaces are biocompatible and induce a higher osteoblasts viability and mineralization. The combination of porous structure and bioactive composition of the oxide layers can be suitable for use as advanced biomedical implants with osseointegration ability.

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“…12. The shape of the polarisation curve recorded for the etched niobium sample is typical of valve metals [23,[57][58][59]. The anodic scan reveals that the surface passivation phenomenon commenced at approximately 0.2 V, where NbO and NbO 2 are oxidised to Nb 2 O 5 [59], with a characteristic plateau, and at a potential of 1.7 V, the evolution of oxygen took place (Fig.…”

Section: O 1smentioning

confidence: 97%

Modification of niobium surfaces using plasma electrolytic oxidation in silicate solutions

Sowa

Kazek-Kęsik

Krząkała

et al. 2013

J Solid State Electrochem

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Herein, a study of the plasma electrolytic oxidation (PEO) of niobium in an anodising bath composed of potassium silicate (K 2 SiO 3 ) and potassium hydroxide (KOH) is reported. The effects of the K 2 SiO 3 concentration in the bath and the process voltage on the characteristics of the obtained oxide layers were assessed. Compact, barrier-type oxide layers were obtained when the process voltage did not exceed the breakdown potential of the oxide layer. When this threshold was breached, the morphology of the oxide layer changed markedly, which is typical of PEO. A significant amount of silicon, in the form of amorphous silica, was incorporated into the oxide coatings under these conditions compared with the amount obtained with conventional anodising. This surface modification technique led to an improvement in the corrosion resistance of niobium in Ringer's solution, regardless of the imposed process conditions.

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Formation of bioactive coatings on a Ti–6Al–7Nb alloy by plasma electrolytic oxidation

Cited by 44 publications

References 72 publications

Comparison between Plasma Electrolytic Oxidation Coating and Sandblasted Acid-Etched Surface Treatment: Histometric, Tomographic, and Expression Levels of Osteoclastogenic Factors in Osteoporotic Rats

Comparison between Plasma Electrolytic Oxidation Coating and Sandblasted Acid-Etched Surface Treatment: Histometric, Tomographic, and Expression Levels of Osteoclastogenic Factors in Osteoporotic Rats

Growth mechanisms of Ca- and P-rich MAO films in Ti-15Zr-xMo alloys for osseointegrative implants

Modification of niobium surfaces using plasma electrolytic oxidation in silicate solutions

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