Nanopores and nanotubes ceramic oxides elaborated on titanium alloy with zirconium by changing anodization potentials

Stoian, Andrei Bogdan; Vardaki, Maria; Ioniță, Daniela; Enăchescu, Marius; Prodana, Mariana; Brancoveanu, Oana; Demetrescu, Ioana

doi:10.1016/j.ceramint.2018.01.137

Cited by 24 publications

(19 citation statements)

References 37 publications

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“…All nanotubular samples provided better cell viability than the base metal. Samples anodized at smaller potentials (5-10 V) formed only nanopores, with diameters increasing with the increase of the applied potential from 8 nm to 33 nm [23]. The larger diameters and hydrophilic character of samples anodized in two steps at 15 and at 30 V were correlated with higher rates of cell proliferation and viability.…”

Section: Ti50zr Alloy Surface Modificationmentioning

confidence: 92%

“…Young's Modulus (GPa) A series of TiZr alloys were compared with cp-Ti. The TixZr alloys with Zr content ranging from 5% to 85% were characterized [22][23][24] in terms of stress distribution, surface topography at the micro-level, electrochemical stability in a simulated oral cavity environment, in vitro cell cultures, and pre-clinical and clinical studies. Fracture of the implant body and bone resorption caused by stress around implants were investigated by finite element method, and clinical investigations concluded that the narrow-diameter TiZr implants present similar success rates and peri-implant bone resorption as cp-Ti implants of comparable dimensions [24].…”

Section: Methodsmentioning

confidence: 99%

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The Trends of TiZr Alloy Research as a Viable Alternative for Ti and Ti16 Zr Roxolid Dental Implants

et al. 2020

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Despite many discussions about Ti versus Zr, Ti remains the golden standard for dental implants. With the extended use of implants, their rejection in peri-implantitis due to material properties is going to be an important part of oral health problems. Extended use of implants leading to a statistical increase in implant rejection associated with peri-implantitis raises concerns in selecting better implant materials. In this context, starting in the last decade, investigation and use of TiZr alloys as alternatives for Ti in oral dentistry became increasingly more viable. Based on existing new results for Ti16Zr (Roxolid) implants and Ti50Zr alloy behaviour in oral environments, this paper presents the trends of research concerning the electrochemical stability, mechanical, and biological properties of this alloy with treated and untreated surfaces. The surface treatments were mostly performed by anodizing the alloy in various conditions as a non-sophisticated and cheap procedure, leading to nanostructures such as nanopores and nanotubes. The drug loading and release from nanostructured Ti50Zr as an important perspective in oral implant applications is discussed and promoted as well.

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Section: Ti50zr Alloy Surface Modificationmentioning

confidence: 92%

Section: Methodsmentioning

confidence: 99%

The Trends of TiZr Alloy Research as a Viable Alternative for Ti and Ti16 Zr Roxolid Dental Implants

et al. 2020

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“…10,11 Oral cavity environ-ments are very aggressive not only because of saliva, but for their varying pH content as well, and the excellent resistance to corrosion of Zr and Zr alloys especially in combination with Ti is a strong point for recommendation as biomaterial. [12][13][14] The present work reports on formation of zirconium phosphates (α-ZP) as a result of anodizing in inorganic H 3 PO 4 +NaF electrolyte. It is important to know that α-ZP materials 15 thanks to their properties (thermal stability, ion exchange capability, good biological compatibility etc.)…”

Section: Introductionmentioning

confidence: 97%

Micro and Nanostructure Surface and Interface Characterization of Anodized Zr in Two Different Electrolytes

Stoian

Vardaki

Demetrescu

2019

ACSi

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The present work reports on the morphologies and properties of anodized Zr in two different electrolytes. The Zr phosphates (α-ZP) obtained in the inorganic electrolyte containing H 3 PO 4 +NaF and zirconia (ZrO 2) nanostructures formed in the organic glycerol-based electrolyte were investigated by SEM, FT-IR and AFM. The surface analysis was completed by contact angles measurements. It was found that the type of electrolyte along with the applied voltage influence the structure of the sample and being more precise, the anodic oxidation in H 3 PO 4 electrolyte promotes the evolution of flaky structures and eventually of pores by increasing the applied voltage, while the anodizing performed in glycerol-based electrolyte results in the formation of nanoporous structures that evolve into nanotubes as the applied voltage grows. Based on experimental data a film forming mechanism for α-ZP and ZrO 2 was proposed and correlated to analyzed surface properties.

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“…The layer grows predominantly by the inward migration of anions . The aggressive formation of pores that leads to nanotubular structures formation are the result of both electric field assisted dissolution and chemical dissolution of such an oxide barrier layer . As a result, field assisted dissolution will occur at certain locations on the zirconium oxide.…”

Section: Introductionmentioning

confidence: 99%

The influence of oxygen amount in oral cavity media on the corrosion behavior of nanostructures formed on anodized Zr

Buica

Stoian

Ioniță

et al. 2018

Materials & Corrosion

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The aim of this study is to investigate the corrosion behavior of anodized Zr in oral cavity environment simulated by Afnor saliva as a function of the amount of dissolved oxygen. For comparison, non treated Zr was also investigated in the same conditions. In order to study the corrosion behavior at open circuit potential versus time, cyclic potentiodynamic polarization (CPP) and electrochemical impedance spectroscopy (EIS) were performed. scanning electron microscopy (SEM) with energy dispersive X‐ray (EDX) imaging was used to observe the morphology and topography of the modified electrodes. Experimental data show that the decrease of oxygen concentration leads to the inhibition of the corrosion process for non treated Zr and Zr covered with nanotubes. A range of electrochemical stability of zirconia nanotubes in artificial Afnor saliva as a function of oxygen content in simulated oral cavity environment was established.

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Nanopores and nanotubes ceramic oxides elaborated on titanium alloy with zirconium by changing anodization potentials

Cited by 24 publications

References 37 publications

The Trends of TiZr Alloy Research as a Viable Alternative for Ti and Ti16 Zr Roxolid Dental Implants

The Trends of TiZr Alloy Research as a Viable Alternative for Ti and Ti16 Zr Roxolid Dental Implants

Micro and Nanostructure Surface and Interface Characterization of Anodized Zr in Two Different Electrolytes

The influence of oxygen amount in oral cavity media on the corrosion behavior of nanostructures formed on anodized Zr

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