Direct preparation of CaTi4 (PO4)6 coatings on the surface of titanium substrate by micro arc oxidation

Zhao, Zhongwei; Wen, Shimei

doi:10.1007/s10856-007-3115-5

Cited by 10 publications

(6 citation statements)

References 29 publications

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“…Currently, plasma spraying, 4 hot isostatic pressing, 5 and sol‐gel technique 6 are the most widely used ceramics coating techniques. These techniques of ceramics coating need a heating treatment for sintering and fixing on the surface, however, these ceramics coatings are easily decomposed at high temperature 7 …”

Section: Introductionmentioning

confidence: 99%

Influence of alkyl chain length on calcium phosphate deposition onto titanium surfaces modified with alkylphosphonic acid monolayers

Hirata

Zhao

et al. 2013

J Biomedical Materials Res

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Much attention has been paid to the modification of a titanium surface with an alkylphosphonic acid (PA)-based self-assembled monolayer (SAM) to accelerate hydroxyapatite (HA) deposition on the surface. In order to further accelerate the rate of HA deposition, we examined here the effect of alkyl chain length of SAMs on the formation of a HA layer. PAs with three different alkyl chain lengths (3, 6, and 16 methylene units) were used for the preparation of a SAM on titanium. The titanium specimens with monolayers were soaked in a simulated body fluid under physiological conditions for 4 weeks. The deposited substances were analyzed by scanning electron microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction. These analyses revealed that the formation of PA SAMs accelerate the deposition of poorly crystallized HA, in an alkyl chain length-dependent manner. Among PAs studied here, PA containing a 16-carbon alkyl chain gave rise to the titanium surface most effective for the deposition of HA.

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Section: Introductionmentioning

confidence: 99%

Influence of alkyl chain length on calcium phosphate deposition onto titanium surfaces modified with alkylphosphonic acid monolayers

Hirata

Zhao

et al. 2013

J Biomedical Materials Res

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“…However, being bioinert, the integration of titanium alloy implants in bone was not in good condition 8. Studies suggest that the osseointegration of titanium alloys is mainly determined by the properties of the surface oxide layer in terms of its structure, morphology, and composition 9.…”

Section: Introductionmentioning

confidence: 99%

“…The plasma spraying technique also has some defects: the ceramics coating is easy to decompose at high temperature. And it is hard and expensive to treat implant surface with complicated geometric shapes 8…”

Section: Introductionmentioning

confidence: 99%

Improved biological performance of microarc‐oxidized low‐modulus Ti‐24Nb‐4Zr‐7.9Sn alloy

Liu

Zhao

et al. 2009

J Biomed Mater Res

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Ti-24Nb-4Zr-7.9Sn (TNZS) is a newly developed beta-titanium alloy with low modulus and it has been considered as good material for dental or orthopedic implant. The purpose of the current study is to evaluate the effect of micro-arc oxidation (MAO) treatment on the biological performance of TNZS surface. The phases, morphology and chemical composition of the MAO-treated surface were characterized by X-ray diffraction, energy dispersive spectroscope and scanning electron microscopy analysis respectively. Then we tested the biocompatibility by examining the cell morphology and viability of osteoblast cells growing on MAO-TNZS surface. The bone binding strength of the specimens was evaluated by removal torque test after implantation in rabbit tibiae for 6 weeks. Compared with the none-treated titanium and TNZS specimens, MAO treated TNZS specimens showed a significant increase (p<0.05) in hydrophilicity, roughness, cell viability and removal torque forces. In summary, MAO treatment helps to form a porous surface with a biologically active bone-like apatite layer on TNZS specimens, which may improve the biological response of MAO-TNZS implants.

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“…These properties govern initial cell attachment, proliferation, and differentiation. [62][63][64][65] Titanium alloys are generally viewed as bioinert 66 and can be rendered bioactive through surface modification, as described here via electrochemical anodization, when nanotubular titania of diameter $80 nm forms on the surface of the struts (Figure 1(a)). There is some evidence in the literature that suggests that anodization changes wettability and surface energy and impacts cellular activity.…”

Section: Discussionmentioning

confidence: 99%

Surface nanotopography-induced favorable modulation of bioactivity and osteoconductive potential of anodized 3D printed Ti-6Al-4V alloy mesh structure

et al. 2017

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The objective of the study described here is to fundamentally elucidate the biological response of 3D printed Ti-6Al-4V alloy mesh structures that were surface modified to introduce titania nanotubes with an average pore size of ∼80 nm via an electrochemical anodization process from the perspective of enhancing bioactivity. The bioactivity of the mesh structures were analyzed through immersion test in simulated body fluid, which confirmed the nucleation and growth of fine globular nanoscale apatite on the nanoporous titania-modified (anodized) mesh structure surface, and agglomerated apatite with fine flakes of apatite crystals on as-fabricated mesh structure surface, that were rich in calcium and phosphorous. The cellular activity of bioactive anodized mesh structure was explored in terms of cell-material interactions involving adhesion, proliferation, synthesis of extracellular and intracellular proteins, differentiation, and mineralization. Cells adhered with a sheet-like morphology on as-fabricated mesh structure, whereas, on anodized mesh structure, numerous filopodia-like cellular extensions interacting with nanotube pores were observed. The formation of a bioactive nanoscale apatite, cell-nanotube interactions as imaged via electron microscopy, higher expression of proteins (actin, vinculin, fibronectin, and alkaline phosphatase (ALP)), and calcium content points toward the determining role of anodized mesh structure in modulating osteoblasts functions. The unique combination of nanoporous bioactive titania and interconnected porous architecture of anodized titanium alloy mesh structure provided a multimodal roughness surface ranging from nano to micro to macroscale, which helps in attaining strong primary and secondary fixation of the implant device along with the pathway for supply of nutrients and oxygen to cells and tissue.

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Direct preparation of CaTi4 (PO4)6 coatings on the surface of titanium substrate by micro arc oxidation

Cited by 10 publications

References 29 publications

Influence of alkyl chain length on calcium phosphate deposition onto titanium surfaces modified with alkylphosphonic acid monolayers

Influence of alkyl chain length on calcium phosphate deposition onto titanium surfaces modified with alkylphosphonic acid monolayers

Improved biological performance of microarc‐oxidized low‐modulus Ti‐24Nb‐4Zr‐7.9Sn alloy

Surface nanotopography-induced favorable modulation of bioactivity and osteoconductive potential of anodized 3D printed Ti-6Al-4V alloy mesh structure

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