Formation of hydroxyapatite within porous TiO(2) layer by micro-arc oxidation coupled with electrophoretic deposition.
Micro-arc oxidation (MAO) is commonly used to modify the surface of Ti-based medical implants with a bioactive and porous titanium oxide (TiO(2)) layer. This study reports a novel method of incorporating hydroxyapatite (HA) within the TiO(2) layer by coupling MAO with an electrophoretic deposition (EPD) process. A HA-incorporated, porous TiO(2) layer was produced successfully on the Ti substrate using the EPD-coupled MAO treatment, as confirmed by electron microscopy observations. Addition of ethanol to the electrolyte solution containing the fine HA particles was essential to reduce the level of gaseous emission on the anode, which obstructs the attachment of HA particles. In vitro cellular assays showed that the incorporation of HA significantly improved the osteoblastic activity on the coating layer.
Kim
Dong-Yoon
DY
Seoul National University, Republic of Korea.
Kim
Miyoung
M
Kim
Hyoun-Ee
HE
Koh
Young-Hag
YH
Kim
Hae-Won
HW
Jang
Jun-Hyeog
JH
D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D017886:Durapatite / Q000737:chemistry*; D004586:Electrophoresis / Q000379:methods*; D004595:Electroplating / Q000379:methods*; D005740:Gases / Q000737:chemistry; D006358:Hot Temperature; D010084:Oxidation-Reduction; D016062:Porosity; D014025:Titanium / Q000737:chemistry*
D020099:Coated Materials, Biocompatible; D005740:Gases; C009495:titanium dioxide; D017886:Durapatite; D014025:Titanium