Ti Oxide Films Formed by an Anodizing Process for Use in Dental Implants

Anodic oxide films were formed on titanium using an electrolyte solution containing phosphoric acid for dental implants by an electrochemical method. The parameters of the oxidation process were current density and electrolyte concentration. The micro structural morphology, surface roughness, thickness of the oxide layer and the behavior of voltage-time curves were examined. The results show that the surface roughness, porosity size and the thickness of the oxide layer showed similar trends as the process parameters were changed. The surface morphology of the samples was observed for different current densities at a constant electrolyte concentration. The pore size, thickness and roughness of the anodic oxide films are directly proportional to the maximum voltage and the slope of the voltage to time transient (dV/dt) curves during the growth of the galvanostatic anode oxide film on plate type Ti.

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Photoluminescence of Anodic Oxide Films on Aluminium

ElectroComponent Science and Technology ◽

10.1155/apec.3.91 ◽

1976 ◽

Vol 3 (2) ◽

pp. 91-95 ◽

Cited By ~ 26

Author(s):

Sakae Tajima ◽

Nobuyoshi Baba ◽

Kenichi Shimizu ◽

Issei Mizuki

Keyword(s):

Electrolyte Concentration ◽

Oxide Films ◽

Anodic Oxide ◽

Point Of View ◽

High Current ◽

Anodic Oxide Films ◽

Inorganic Acids ◽

Purity Aluminium ◽

High Purity Aluminium ◽

Current Densities

A wide variety of anodic oxide films were investigated from the photoluminescent point of view. It was found that the phenomenon of photoluminescence appears only on the films anodically formed in organic acids instead of inorganic acids. In particular, thick oxalic acid films formed in low electrolyte concentration, with high current densities on high purity aluminium, gave intense photoluminescence. The luminescent centres were presumed to be the carboxylate ions which had been incorporated in the films during anodisation.

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The Effects of Anodic Oxide Films Produced by β-Glycerophosphate and Calcium Acetate Anodizing on Attachment and Spreding of Osteoblaste-Like Cell

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.330-332.75 ◽

2007 ◽

Vol 330-332 ◽

pp. 75-78

Author(s):

Y.T. Jung ◽

J.W. Park ◽

S.I. Yeo ◽

Byung Ju Choi ◽

Kyo Han Kim ◽

...

Keyword(s):

Surface Roughness ◽

Oxide Films ◽

Anodic Oxide ◽

Calcium Acetate ◽

Control Surface ◽

Oxide Surface ◽

Scanning Electron Micrographs ◽

Anodic Oxide Films ◽

Positive Effects ◽

Significant Difference

The effect of anodic oxide films produced by β-glycerophosphate (β-GP) and calcium acetate (CA) anodizing on osteoblast-like cell attachment and spreading were evaluated in this study. Anodic oxide films were produced in different conditions: Group 1, 0.02 M β-GP and 0.2 M CA; Group 2, 0.03 M β-GP and 0.2 M CA; Group 3, 0.03 M β-GP and 0.2 M CA. Anodic oxide surface was significantly rougher in comparison to the control untreated titanium surfaces, and the surface roughness and composition of phosphate and oxide increased as the concentration of β-GP was increased. There was no significant difference in the cell viability when cells were cultured on the control or anodized surface using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. Scanning electron micrographs revealed more spread cells on the anodized surface than on the smooth control surface. In conclusion, we suggested that the positive effects of anodized surfaces produced by β-GP and CA on spreading of osteoblast-like cells may be the result of the difference of surface roughness and amount of Ca and P in the oxide layer.

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