Electrochemical assessment of laser-treated titanium alloy used for dental applications at acidic pH condition (in vitro study)

daym, Dalia A. Abd El; Gheith, Mostafa; Abbas, Nadia A.; Rashed, Laila Ahmed; Aziz, Zeinab A. Abd El

doi:10.4103/1735-3327.266097

Cited by 2 publications

(3 citation statements)

References 21 publications

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“…Meanwhile, porous titanium samples were manufactured by space holder technique, with a particle size range of 100-200 µm. Ammonium hydrogen carbonate (NH 4 HCO 3 ) from (Cymit Química SL, Barcelona, Spain) was used as a space holder with different content (30,40,50, and 60 vol. %).…”

Section: Manufacturing Of Surface Modified Porous Titanium Discs Usin...mentioning

confidence: 99%

“…It is, therefore, that researchers have thoroughly used Electric Impedance Spectroscopy (EIS) as an electrochemical tool for both purposes. In this sense, several corrosion studies have been carried out on titanium or titanium alloys surfaces, using electrochemical impedance spectroscopy [38][39][40] to follow the formation of passive TiO 2 layer. Moreover, other surface features could be evaluated using impedance spectroscopy, such as porosity or pores sizes, with a clear advantage over other techniques such as Image Analysis or Archimedes Test, since it is a non-invasive technique and enables measurements to be carried out in situ.…”

Section: Introductionmentioning

confidence: 99%

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Electrical Impedance of Surface Modified Porous Titanium Implants with Femtosecond Laser

et al. 2022

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The chemical composition and surface topography of titanium implants are essential to improve implant osseointegration. The present work studies a non-invasive alternative of electrical impedance spectroscopy for the characterization of the macroporosity inherent to the manufacturing process and the effect of the surface treatment with femtosecond laser of titanium discs. Osteoblasts cell culture growths on the titanium surfaces of the laser-treated discs were also studied with this method. The measurements obtained showed that the femtosecond laser treatment of the samples and cell culture produced a significant increase (around 50%) in the absolute value of the electrical impedance module, which could be characterized in a wide range of frequencies (being more relevant at 500 MHz). Results have revealed the potential of this measurement technique, in terms of advantages, in comparison to tiresome and expensive techniques, allowing semi-quantitatively relating impedance measurements to porosity content, as well as detecting the effect of surface modification, generated by laser treatment and cell culture.

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Section: Manufacturing Of Surface Modified Porous Titanium Discs Usin...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrical Impedance of Surface Modified Porous Titanium Implants with Femtosecond Laser

et al. 2022

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“…This film is equally protective, but it does not form spontaneously like anatase and rutile [32]. However, the destruction of the Ti oxide layer can lead to high susceptibility to Cl − ions resulting in damage to the abutment surface [35] because of the penetration and subsequent destabilization of the protective layer and hindrance of the passivation process [36,37].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Resistance of Titanium Dental Implant Abutments: Comparative Analysis and Surface Characterization

Kowalski,

Rylska,

Januszewicz

et al. 2023

Materials

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Metals subjected to the oral environment are prone to corrosion over time and this can be harmful. Metallic restoration components such as dental subgingival implant abutments are exposed to pH changes and different ions while in contact with saliva. The aim of the study was to evaluate the corrosion resistance of titanium dental implant abutments and to compare and contrast the surface characteristics of these alloys before and after corrosion. The corrosion examination (Ecorr, jcorr, OCP, polarization curve) of two implant abutments (TiDesign EV, Astra Tech, Dentsply, York, PA, USA; Individual Titanium Abutment, Apollo Implants Components, Pabianice, Poland) was performed in 0.9% NaCl and 5% HCl. Moreover, specimens were investigated using SEM-EDS before and after the corrosion test. The value of jcorr in NaCl was higher for Astra (34.2 × 10−8 ± 2.5 × 10−8 A/cm2) than for Apollo (8.8 × 10−8 ± 2.5 × 10−8 A/cm2). Whereas, in HCl, the opposite relationship was observed (Astra 2.9 × 10−4 ± 0.8 × 10−4 A/cm2 and Apollo 62.7 × 10−4 ± 9.3 × 10−4 A/cm2). An average reactive anodic current density in NaCl for Astra amounted up to ~0.2 × 10−5–1.5 × 10−5 A/cm2, while for Apollo-up to ~3.3–9.7 × 10−7 A/cm2. The composition of both alloys after corrosion in NaCl demonstrated some changes: a decrease in the Ti, and Al and an increase in oxygen content. Hence, both alloys after corrosion in HCl demonstrated some minor changes in the elemental composition. Based on the results it can be concluded that: 1. Astra and Apollo abutments revealed good corrosion resistance and a passivation layer on the surface. 2. Apollo abutments exhibited better corrosion resistance in a neutral environment, suggesting that Astra abutments were found to be more resistant to corrosion in an acidic medium.

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Electrochemical assessment of laser-treated titanium alloy used for dental applications at acidic pH condition (in vitro study)

Cited by 2 publications

References 21 publications

Electrical Impedance of Surface Modified Porous Titanium Implants with Femtosecond Laser

Electrical Impedance of Surface Modified Porous Titanium Implants with Femtosecond Laser

Corrosion Resistance of Titanium Dental Implant Abutments: Comparative Analysis and Surface Characterization

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