The influence of ultraviolet irradiation on sandblasted and acid-etching surface adsorbing human fibronectin.
- Author:
Shaobing LI
1
;
Xueyang ZHANG
2
;
Jia NI
;
Congyun WEI
;
Mingdeng RONG
;
Lei ZHOU
Author Information
- Publication Type:Journal Article
- MeSH: Adsorption; Fibronectins; chemistry; Humans; Microscopy, Electron, Scanning; Surface Properties; Titanium; Ultraviolet Rays; Wettability
- From: Chinese Journal of Stomatology 2014;49(4):234-238
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo study the influence of ultraviolet (UV) irradiation on physical and chemical properties of sandblasted and acid-etched (SA) titanium surface and their ability to adsorb human fibronectin (HFn).
METHODSSA and UV-SA surfaces were separately prepared. Surface morphology, roughness, elemental composition, wettability and HFn adsorption assay were performed for comparative analysis of these two surfaces.
RESULTSSA and UV-SA surface had a similar morphology with multi-holes, and average roughness. UV-SA surface had a lower C content (22.83%) and higher O content (51.20%) and presented hydrophilicity, while SA surface showed hydrophobicity. But the quantity of adsorbed HFn on SA surface at 10 min assay point [(0.41 ± 0.07) µg] was statistically higher than that on UV-SA surface [(0.26 ± 0.08) µg](P = 0.007).
CONCLUSIONSUV irradiation would not change the morphology and roughness of SA surface. However, it could reduce the hydrocarbon and increase the hydroxyl groups, and the absorption of HFn on UV-SA surface at 10 min assay point was statistically lower than that on SA surface. Therefore, the in-vitro bioactivity of UV-SA surface was not as good as that of SA surface.
