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KMID : 1004520120280040339
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Journal of Dental Rehabilitation and Applied Science
2012 Volume.28 No. 4 p.339 ~ p.347
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The Surface Characteristic Changes of Hydroxyapatite Coated Ti Disc When Immersed in NaCl Solution
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Baek Yeon-Wha
Kim Myung-Joo
Kwon Ho-Beom
Lim Young-Jun
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Abstract
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In previous studies, methods for enhancing cellular response on the Hydroxyapatite coated implant surface were
described. In this study, the changes of surface characteristics such as surface roughness, contact angle, surface energy
and surface morphology were observed when Hydroxyapatite coated Ti discs were immersed in NaCl solution for various
time. Hydroxyapatite coated Ti discs were immersed in 0.9% NaCl solution for 7, 14 and 21 days at 37℃. The control
group comprises dry identical discs not immersed in a solution. (n=3) All discs were dried in air completely and the surface roughness was measured using confocal laser scanning microscopy(CLSM). Static contact angle was recorded by video contact angle analyzer after dropping distilled water on the surface. The surface energy was calculated from contact angles of the three liquids. Surface was observed using a field emission-scanning electron microscope(FE-SEM).
As a result, the surface roughness of immersed Hydroxyapatite coated Ti discs increased significantly and the contact
angle decreased comparing with control group discs. The surface energy of immersed discs increased except for discs
immersed for 14 days.
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KEYWORD
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contact angle, hydrophilicity, Hydroxyapatite coated implant, surface energy, surface roughness
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