Electrochemical corrosion analyses and characterization of surface-modified titanium

Ong, Joo L.; Lucas, L. C.; Raikar, Ganesh N.; Gregory, J. C.

doi:10.1016/0169-4332(93)90036-b

Cited by 95 publications

(52 citation statements)

References 20 publications

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“…The XPS high-resolution spectra are dominated by a doublet peak at ~459 and ~464 eV, which can be assigned to TiO 2 (Ti 2p3/2 and Ti 2p1/2, respectively). A difference of 5.8 to 6.0 eV in binding energies between the Ti 2p3/2 and Ti 2p1/2 peaks of the doublet further corroborated the presence of TiO 2 on all the surfaces 29 . The XPS measurements indicate that the titanium implants from the group 4 coated by the HA-blasting process are completely covered by HA, because no Ti peaks are observed in the XPS spectra.…”

Section: Xps Analysismentioning

confidence: 53%

“…TiO 2 has been referenced with a value of 71.5 eV 29 . The Deconvolution of high resolution spectra of the carbon 1s peaks revealed three components for each surface: C=O, C-O or C-OH, and C-C (graphite) or CH (hydrocarbon) 6,29 . The binding energies for these three components in the present study were ~288.53, ~286.80, and ~285.00 eV, respectively.…”

Section: Xps Analysismentioning

confidence: 99%

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Chemical and topographic analysis of treated surfaces of five different commercial dental titanium implants

Pedrosa

Martins

2012

Mat. Res.

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We present a detailed investigation of the surface characteristics of five commercial titanium implants with different surface finishing (double acid etching, anodization and incorporation of Ca/P, acid etching and deposition of Ca/P, hydroxyapatite-blasting, acid etching and Ca/P-blasting) produced by five different manufacturers. A set of experimental techniques were employed to study the surface chemical composition and morphology: XPS, XRD, SEM, EDS, and AFM. According to the implat manufacturers, the addition of Ca and P at the implant surface is a main feature of these implants (except the double acid etched implant, which was included for comparative purpose). However, the results showed a great discrepancy on the final amount of these elements on the implant surface, which suggests a different effectiveness of the employed surface finishing methods to fix those elements on the implant surface. Our results show that only the method used by the manufacturer of hydroxyapatite-blasting surface finished implants was efficient to produce a hydroxyapatite coating. This group also showed the highest roughness parameters.

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Section: Xps Analysismentioning

confidence: 53%

Section: Xps Analysismentioning

confidence: 99%

Chemical and topographic analysis of treated surfaces of five different commercial dental titanium implants

Pedrosa

Martins

2012

Mat. Res.

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“…Studies on surface properties of Ti have indicated the presence of amorphous TiO 2 with oxide thickness in the range of 30 to 100 Å. 5,6 The amphoteric characteristics of titanium oxide that resulted from surface hydroxyl groups were reported to change its surface zeta potential as a result of the change in pH. 17,24,25 Surface analyses from our group using X-ray photoelectron spectroscopy indicated a 5.8 eV peak separation between the Ti 2p 1/2 and Ti 2p 3/2 peaks for the Ti surfaces and the TiO 2 single crystal standard.…”

Section: Discussionmentioning

confidence: 99%

“…3,4 Depending on the sterilization technique and surface treatments, oxide thickness in the range of 30 to 100 Å were often reported. 5,6 Because rapid adsorption of proteins have been shown to be the first few events occurring when a foreign material is implanted, the investigation of protein adsorption on implant surfaces needs to be critically evaluated. [7][8][9][10] Protein adsorption, such as the adsorption of human serum protein on TiO 2 , had been attributed to a salt bridge.…”

Section: Introductionmentioning

confidence: 99%

Protein adsorption on titanium surfaces and their effect on osteoblast attachment

Yang

Cavin

Ong

2003

J Biomedical Materials Res

148

114

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The objective of this study was to investigate the adsorption of albumin and fibronectin on titanium (Ti) surfaces and the effect of preadsorbed albumin and fibronectin on osteoblast attachment in vitro. Bovine serum albumin and bovine fibronectin were used in this study. Maximum adsorption of bovine serum albumin and fibronectin on Ti surfaces was observed to occur after 180-min incubation. In the presence of preadsorbed proteins, osteoblast attachment on Ti surfaces was observed to be enhanced compared to control Ti surfaces. However, cell attachment was affected by the types of protein adsorbed. Preadsorbed albumin was observed to have no significant effect on the amount of osteoblast cells attached. In comparison to control Ti surface and Ti surfaces preadsorbed with albumin, Ti surfaces preadsorbed with fibronectin for 15 min was observed to significantly increase osteoblast cell attachment, whereas Ti surfaces preadsorbed with fibronectin for 180 min did not affect cell attachment. In addition, cell morphology of the attached cells on protein preadsorbed Ti surfaces was not affected by the type of protein used in this study. It was concluded from this study that the concentration of fibronectin adsorbed on Ti surfaces was higher compared to albumin. In addition, it was also concluded that the concentration of fibronectin on Ti surfaces plays a role in governing cell attachment.

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“…11 Because ion release changes the environmental fluid condition and influences cellular responses to the implant surface, an increase in oxide thickness and crystallinity has been suggested as a means for improving ion dissolution resistance. 12,13 Moreover, the absorption concentration of complement C3, which is related to the cellular attachment, increases with an increase in the thickness and/ or crystallinity of the titanium oxide. 14 Thomas and Cook 15 examined variables affecting osseous contact by implants and concluded that surface texture was a very significant parameter in implant fixation.…”

Section: Introductionmentioning

confidence: 99%

Surface characteristics and structure of anodic oxide films containing Ca and P on a titanium implant material

Zhu

Ong

Kim

et al. 2002

J. Biomed. Mater. Res.

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An anodic oxide film that formed on titanium with a mixture of beta-glycerophosphate sodium (beta-GP) and calcium acetate was investigated. The anodic oxide had interconnected pores (ca. 1-2 microm in diameter) and intermediate roughness (0.60-1.50 microm). In addition, it contained a mixture of amorphous, anatase, and rutile oxides. With an increase in the anodizing voltage and/or concentration of calcium incorporated into the oxide, the degree of oxide crystallinity increased. However, with an increase in the concentration of beta-GP, the degree of oxide crystallinity decreased. It was concluded that the surface roughness, oxide crystallinity, and surface composition of the anodic oxide were dependent on the voltage, current density, and concentration of the electrolyte. It was also concluded that the anodized surface could be optimized for maximum osseointegration.

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Electrochemical corrosion analyses and characterization of surface-modified titanium

Cited by 95 publications

References 20 publications

Chemical and topographic analysis of treated surfaces of five different commercial dental titanium implants

Chemical and topographic analysis of treated surfaces of five different commercial dental titanium implants

Protein adsorption on titanium surfaces and their effect on osteoblast attachment

Surface characteristics and structure of anodic oxide films containing Ca and P on a titanium implant material

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