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Structure and In Vitro Bioactivity of Si Enriched Hydroxyapatite/TiO2 Coatings on Pure Titanium by Micro-Arc Oxidation

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Abstract:

The effect of Si doping on the bioactivity and characteristics of hydroxyapatite/TiO2 composite films was investigated. Pure titanium plates were treated to form Ca, P and Si enriched titania-based films by using micro-arc oxidation (MAO). Then, some specimens were undergone a further hydrothermal treatment to produce a thin outermost layer of hydroxyapatite (HA). Experiments revealed that that the film, which was about 10μm thick, was composed of amorphous silicon dioxide, amorphous calcium phosphate, rutile and anatase. The film was porous and uneven, with the pore size of 1-4μm. No obvious cracks exist on the surface. In order to investigate the cytocompatibility of the films, periodontal ligament (PDL) cells were seeded onto the surface of the films. It was concluded that the Si ion did not influence the characters of MAO film but Si enriched hydroxyapatite/ TiO2 composite coatings exhibited an effect on cell attachment.

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Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Pages:

1596-1598

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.336-338.1596

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Online since:

April 2007

Authors:

Rong Rong Nie, Feng Zhu, Li Ru Shen, Zhi Qing Chen, Xiao Yu Li, Xia Deng, Gang He, Yong Zhao, Zhi Hong Liang

Keywords:

Cytocompatibility, Micro-Arc Oxidation (MAO), Silicon, Simulated Body Fluid (SBF)

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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