The Influence of Artificial Body Fluids on Metallic Corrosion

Brett, Christopher M. A.; Mureşan, I

doi:10.4028/www.scientific.net/kem.230-232.459

Cited by 8 publications

(6 citation statements)

References 4 publications

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“…The effect of the bathing solution on corrosion rate has not been extensively investigated and, with the rare exception of [17], has only recently begun to be studied [18,19]. There are large numbers of possible solutions, which have been used to simulate body fluids in these studies, particularly those similar to saliva and to physiological serum.…”

Section: Introductionmentioning

confidence: 98%

The corrosion of dental amalgam in artificial salivas: an electrochemical impedance study

Brett

Trandafir

2004

Journal of Electroanalytical Chemistry

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An electrochemical impedance study of the corrosion of Tytin dental amalgam was carried out in electrolytes similar to artificial saliva with or without lactic acid, and in standard inorganic artificial saliva with higher ionic concentration. Spectra were recorded in the presence and absence of dissolved oxygen to show the importance of the formation of oxide film and the adsorption of the organic component, as well as the exposed surface microstructure. The data, supported by open circuit potential and polarisation curve experiments, obtained in the presence and absence of dissolved oxygen are interpreted in the light of possible corrosion mechanisms.

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Section: Introductionmentioning

confidence: 98%

The corrosion of dental amalgam in artificial salivas: an electrochemical impedance study

Brett

Trandafir

2004

Journal of Electroanalytical Chemistry

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“…Any alteration in the chemical composition of Ti alloys may lead to stabilization of a certain phase and crystal structure: the high temperature Ti has a body-centered cubic (BCC) crystal structure, β-phase, while the low temperature phase (α) displays a hexagonal close-packed (HCP) structure (e.g., CP Ti) and the combination of the two phases (α + β) (e.g., Ti-6Al-4V) [18]. The β-type titanium alloys containing beta-stabilizing elements (e.g., Nb, Ta and Zr) exhibit many advantages such as lower Young's moduli that are closer to that of the human bone (which can mitigate bone loss and implant loosening due to stress shielding), non-allergic and non-toxic elements such as Nb, Ta and Zr, excellent corrosion resistance due to the formation of more stable oxide layers and good biocompatibility [19,20]. Body fluid present in the immediate vicinity of implants contains organic and inorganic solutions of cations Mg 2+ , Ca 2+ , Na + , K + , and anions SO 4 2− , Cl − , HCO 3 − , H 2 PO 4 − .…”

Section: Introductionmentioning

confidence: 99%

On the Corrosion Behaviour of Low Modulus Titanium Alloys for Medical Implant Applications: A Review

Afzali

Ghomashchi

Oskouei

2019

Metals

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The corrosion behaviour of new generation titanium alloys (β-type with low modulus) for medical implant applications is of paramount importance due to their possible detrimental effects in the human body such as release of toxic metal ions and corrosion products. In spite of remarkable advances in improving the mechanical properties and reducing the elastic modulus, limited studies have been done on the electrochemical corrosion behaviour of various types of low modulus titanium alloys including the effect of different beta-stabilizer alloying elements. This development should aim for a good balance between mechanical properties, design features, metallurgical aspects and, importantly, corrosion resistance. In this article, we review several significant factors that can influence the corrosion resistance of new-generation titanium alloys such as fabrication process, body electrolyte properties, mechanical treatments, alloying composition, surface passive layer, and constituent phases. The essential factors and their critical features are discussed. The impact of various amounts of α and β phases in the microstructure, their interactions, and their dissolution rates on the surface passive layer and bulk corrosion behaviour are reviewed and discussed in detail. In addition, the importance of different corrosion types for various medical implant applications is addressed in order to specify the significance of every corrosion phenomenon in medical implants.

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“…Furthermore, metallic restorations, such as dental implants and abutments are exposed to different cations (such as Mg 2+ , Ca 2+ , Na + , K + ) and anions (like SO 4 2− , Cl − , HCO 3− , H 2 PO 4− ) in the oral cavity [38]. Moreover, these corrosion-contributing factors can facilitate the release of metal ions from abutments into surrounding tissues [39].…”

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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The Influence of Artificial Body Fluids on Metallic Corrosion

Cited by 8 publications

References 4 publications

The corrosion of dental amalgam in artificial salivas: an electrochemical impedance study

The corrosion of dental amalgam in artificial salivas: an electrochemical impedance study

On the Corrosion Behaviour of Low Modulus Titanium Alloys for Medical Implant Applications: A Review

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

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