Titanium Bioactive Surface Formation Via Alkali and Heat Treatments for Rapid Osseointegration

Oliveira, Marcelo Gabriel de; Radi, Polyana Alves; Reis, Danieli Aparecida Pereira; Reis, Adriano Gonçalves dos

doi:10.1590/1980-5373-mr-2020-0514

Cited by 2 publications

(1 citation statement)

References 28 publications

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“…Titania nanosheets (TNSs), i.e., nanometerscale structures, can be formed on the material surface by treating titanium with alkali to create a rough surface at nanoscale. Furthermore, the precipitated nano-modified titanium surface is useful for improving the initial adhesion ability of rat bone marrow cells (RBMCs) and inducing hard tissue differentiation [16][17][18][19]. Further, TNSs have been reported to be more hydrophilic than untreated titanium surfaces [13,14].…”

Section: Introductionmentioning

confidence: 99%

Effects of Argon Gas Plasma Treatment on Biocompatibility of Nanostructured Titanium

Hayashi,

Takao,

Komasa

et al. 2023

IJMS

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In this study, we applied argon plasma treatment to titanium surfaces with nanostructures deposited by concentrated alkali treatment and investigated the effects on the surface of the material and the tissue surrounding an implant site. The results showed that the treatment with argon plasma removed carbon contaminants and increased the surface energy of the material while the nanoscale network structure deposited on the titanium surface remained in place. Reactive oxygen species reduced the oxidative stress of bone marrow cells on the treated titanium surface, creating a favorable environment for cell proliferation. Good results were observed in vitro evaluations using rat bone marrow cells. The group treated with argon plasma exhibited the highest apatite formation in experiments using simulated body fluids. The results of in vivo evaluation using rat femurs revealed that the treatment improved the amount of new bone formation around an implant. Thus, the results demonstrate that argon plasma treatment enhances the ability of nanostructured titanium surfaces to induce hard tissue differentiation and supports new bone formation around an implant site.

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Section: Introductionmentioning

confidence: 99%

Effects of Argon Gas Plasma Treatment on Biocompatibility of Nanostructured Titanium

Hayashi,

Takao,

Komasa

et al. 2023

IJMS

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Microstructure and Mechanical Characteristics of Ti-Ta Alloys before and after NaOH Treatment and Their Behavior in Simulated Body Fluid

et al. 2023

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In the present study, the microstructure and mechanical properties of Ti-xTa (x = 5%, 15%, and 25% wt. Ta) alloys produced by using an induced furnace by the cold crucible levitation fusion technique were investigated and compared. The microstructure was examined by scanning electron microscopy and X-ray diffraction. The alloys present a microstructure characterized by the α′ lamellar structure in a matrix of the transformed β phase. From the bulk materials, the samples for the tensile tests were prepared and based on the results and the elastic modulus was calculated by deducting the lowest values for the Ti-25Ta alloy. Moreover, a surface alkali treatment functionalization was performed using 10 M NaOH. The microstructure of the new developed films on the surface of the Ti-xTa alloys was investigated by scanning electron microscopy and the chemical analysis revealed the formation of sodium titanate and sodium tantanate along with titanium and tantalum oxides. Using low loads, the Vickers hardness test revealed increased hardness values for the alkali-treated samples. After exposure to simulated body fluid, phosphorus and calcium were identified on the surface of the new developed film, indicating the development of apatite. The corrosion resistance was evaluated by open cell potential measurements in simulated body fluid before and after NaOH treatment. The tests were performed at 22 °C as well as at 40 °C, simulating fever. The results show that the Ta content has a detrimental effect on the investigated alloys’ microstructure, hardness, elastic modulus, and corrosion behavior.

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Titanium Bioactive Surface Formation Via Alkali and Heat Treatments for Rapid Osseointegration

Cited by 2 publications

References 28 publications

Effects of Argon Gas Plasma Treatment on Biocompatibility of Nanostructured Titanium

Effects of Argon Gas Plasma Treatment on Biocompatibility of Nanostructured Titanium

Microstructure and Mechanical Characteristics of Ti-Ta Alloys before and after NaOH Treatment and Their Behavior in Simulated Body Fluid

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