Hydrogen peroxide toward enhanced oxide growth on titanium in PBS solution: Blue coloration and clinical relevance

Pan, Jinshan; Thierry, D.; Leygraf, C.

doi:10.1002/(sici)1097-4636(199603)30:3<393::aid-jbm14>3.3.co;2-j

Cited by 19 publications

(30 citation statements)

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“…[3] Treating the titanium surface with H 2 O 2 leads to the formation of a thicker porous oxide layer. [31] The determined capacitance is higher and the resistance is lower compared to untreated titanium surfaces. An occurring second time constant corresponds to an additional porous outer layer with a low resistance.…”

Section: H 2 Omentioning

confidence: 98%

“…A passive oxide layer of an alloy typically shows one time constant in the impedance spectrum. [3] If there are two time constants, the first one stands for the mentioned passive oxide film and the second time constant signifies a porous outer layer [3,[29][30][31][32] or a deposited film. [22] Different adsorbing layers also have different time constants.…”

Section: Fundamentalsmentioning

confidence: 99%

“…The inner barrier layer has a high corrosion resistance. [22,30,31,38] The outer porous layer is heterogeneous and has a low resistance. Defects of the unsealed surface are filled with electrolyte.…”

Section: Equivalent Circuit -Modelling the Interfacementioning

confidence: 99%

“…Defects of the unsealed surface are filled with electrolyte. [30][31][32]38] While the corrosion resistance is attributed to the inner layer, the ability of tissue integration should be ascribed to the porous outer layer. [39] The oxide layer capacitance C p is inversely proportional to the oxide layer thickness d = A e 0 e r /C p , with A being the oxide layer surface, e r the relative static permittivity of the oxide film, and e 0 the electric constant.…”

Section: Equivalent Circuit -Modelling the Interfacementioning

confidence: 99%

“…The resistance increases, [3,31] whereas the capacitance of the inner layer decreases with surface restoring. [31] The bone tissue at the interface may be integrated easier into the thicker oxide film, because there are more hydroxyl and phosphate ions in the thicker outer film that attract Ca ions. There might be a physical (extension of minerals into the porous layer) and chemical bonding mechanism (between oxides and HA-like components) in the region between titanium and tissue.…”

Section: H 2 Omentioning

confidence: 99%

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Biomaterial Interface Investigated by Electrochemical Impedance Spectroscopy

2008

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Electrochemical impedance spectroscopyElectrochemical impedance spectroscopy is an easy applicable sensitive technique. It is used to get information about the adsorption behaviour and the interactions of biomolecules with the electrode surface in a short measurement duration. Electrochemical processes can be modelled by an equivalent circuit and various parameters reflecting certain properties of the interface can be determined. The electrochemical properties of the interface are influenced by proteins and cells adsorbing at the surface. Different modified surfaces can be analyzed before, during, and after cell contact, respectively. Applying bias potentials also changes the behaviour of attaching cells and proteins. Changes in the medium composition have an influence on the electrochemically detectable surface properties.Biosensors are developed consecutively to detect biomolecules. Enzymes, lipids and membranes can be analyzed and the adsorption behaviour of DNA and antigens at modified electrode surfaces can be determined. Different technologies using microchips were constructed to allow a fast screening of electrochemical properties and discrimination of biological molecules or cells. ApplicationElectrochemical impedance spectroscopy serves not only for determination of the capacity of new battery materials or corrosion behaviour and long term stability of diverse alloys and oxide layers, it can also be used to gain information about biomolecules. The adsorption behaviour of cells [1][2][3] and proteins, [4] the amount of adsorbed proteins, [4][5][6][7] surface charge densities [4][5][6] and adsorption coefficients [5] can be determined. Interactions of implant surfaces with biological devices, changes in the polarizability of functional groups, the transport of ions or dipoles through polymer layers and mineralization processes, for instance of bone tissue can be assessed. The change of the Gibbs free energy and the entropy due to protein binding to the surface can be calculated [4,6,8] and the affinity of biomolecules to the surface can be estimated. [4] Electrochemical techniques are introduced as biosensors. Antigens, ssDNA or enzymes are immobilized at the surface and according antibodies, DNA and distinct proteins can be ADVANCED ENGINEERING MATERIALS 2008, 10, No. 10

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Section: H 2 Omentioning

confidence: 98%

Section: Fundamentalsmentioning

confidence: 99%

Section: Equivalent Circuit -Modelling the Interfacementioning

confidence: 99%

Section: Equivalent Circuit -Modelling the Interfacementioning

confidence: 99%

Section: H 2 Omentioning

confidence: 99%

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Biomaterial Interface Investigated by Electrochemical Impedance Spectroscopy

2008

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Fracture of Ni‐Ti superelastic alloy under sustained tensile load in physiological saline solution containing hydrogen peroxide

Yokoyama

Ogawa

Fujita

et al. 2007

J Biomedical Materials Res

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The fracture of Ni-Ti superelastic alloy has been investigated by a sustained tensile-loading test in physiological saline solution containing hydrogen peroxide (0.15M NaCl + 0.3M H(2)O(2)). The fracture always occurs when the applied stress exceeds the critical stress for martensite transformation. In contrast, under a low applied stress, the fracture does not always occur within 1000 h. The fracture is probably mainly caused by localized corrosion associated with the preferential dissolution of nickel ions. In 0.3M H(2)O(2) solution without NaCl, the fracture does not occur even under a high applied stress. The results of the present study imply that one reason for the fracture of the Ni-Ti superelastic alloy in vivo is localized corrosion due to the synergistic effects of hydrogen peroxide and sodium chloride under applied stress.

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The effect of scanning electrochemical potential on the short‐term impedance of commercially pure titanium in simulated biological conditions

Ehrensberger

Gilbert

2010

J Biomedical Materials Res

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The electrochemical history (voltage-time variations) of titanium oxide-solution interfaces can vary widely in vivo, particularly where oxide abrasion is present, and it is important to assess the effects of voltage on the impedance behavior of the interface. Potential step impedance analysis (PSIA) utilizes a time and frequency domain methodology to assess the electrochemical impedance of electrified interfaces over a range of voltages. The PSIA method was used to study the combined effects of scanning electrical potential and the presence of solution-born organic species (protein, amino acids, etc.) on the electrochemical properties of cpTi. The specific solutions used in these scanning PSIA experiments were phosphate buffered saline and cell culture medium supplemented with 10% fetal bovine serum. The results show that electrochemical impedance properties of cpTi are voltage-time history dependent and strongly influenced by electrical potential within the -1000 mV to +1000 mV range studied. Moreover, the presence of biologically relevant molecules in the electrolyte solution alters the impedance properties only at cathodic potentials. Specifically, at cathodic potentials, these organic species have been shown to suppress the cathodic current density, shift the zero current potential in the cathodic direction, and increase the interfacial capacitance, polarization resistance, and the distribution of surface relaxation times. At anodic potentials, the presence of the organic species does not alter any of the electrochemical properties examined. Overall, these results show the importance of understanding of the variation in electrochemical potentials achievable in vivo and the effects voltage history has on interfacial electrochemical behavior.

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Hydrogen peroxide toward enhanced oxide growth on titanium in PBS solution: Blue coloration and clinical relevance

Cited by 19 publications

References 0 publications

Biomaterial Interface Investigated by Electrochemical Impedance Spectroscopy

Biomaterial Interface Investigated by Electrochemical Impedance Spectroscopy

Fracture of Ni‐Ti superelastic alloy under sustained tensile load in physiological saline solution containing hydrogen peroxide

The effect of scanning electrochemical potential on the short‐term impedance of commercially pure titanium in simulated biological conditions

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