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http://dx.doi.org/10.4047/jkap.2011.49.4.333

The effect of different crystallization temperature of the hydroxyapatite coating produced by ion beam-assisted deposition on anodizing-treated titanium disks on human osteosarcoma cells  

Pae, Ah-Ran (Department of Prosthodontics, School of Dentistry, Kyung Hee University)
Won, Hyun-Du (Department of Prosthodontics, School of Dentistry, Kyung Hee University)
Lee, Richard Sung-Bok (Department of Prosthodontics, School of Dentistry, Kyung Hee University)
Kim, Hyeong-Seob (Department of Prosthodontics, School of Dentistry, Kyung Hee University)
Woo, Yi-Hyung (Department of Prosthodontics, School of Dentistry, Kyung Hee University)
Publication Information
The Journal of Korean Academy of Prosthodontics / v.49, no.4, 2011 , pp. 333-340 More about this Journal
Abstract
Purpose: The aim of this study was to study the effect of hydroxyapatite (HA) coating crystallinity on the proliferation and differentiation of human osteosarcoma cells. Materials and methods: Surface roughness of the titanium disks increased by anodizing treatment and then HA was coated using ion beam-assisted deposition (IBAD). HA coating was crystallized by heat-treated at different temperature ($100^{\circ}C$, $300^{\circ}C$, $500^{\circ}C$, $800^{\circ}C$). According to the temperature, disks were divided into four groups (HA100, HA300, HA500, HA800). With the temperature, crystallinity of the HA coating was different. Anodized disks were used as control group. The physical properties of the disk surface were evaluated by surface roughness tests, XRD tests and SEM. The effect of the crystallinity of HA coating on HOS cells was studied in proliferation and differentiation. HOS cells were cultured on the disks and evaluated after 1, 3, 5, and 7 days. Growth and differentiation kinetics were subsequently investigated by evaluating cell proliferation and alkaline phosphatase activity. Results: Regardless of the heat-treated temperature, there is no difference on the surface roughness. Crystallinity of the HA was appeared in the groups of HA500, HA800. HOS cells proliferation, ALP activity were higher in HA500 and HA800 group than HA100 and HA300. Conclusion: Within the results of this limited study, heat treatment at $500^{\circ}C$ of HA coating produced by IBAD has shown greater effect on proliferation and differentiation of HOS cells. It is considered that further in vivo study will be necessary.
Keywords
Cell proliferation; Alkaline phophatase activity;
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