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Lasers in Medical Science

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01.11.2009 | Original Article

In vitro and in vivo studies of osteoblast cell response to a titanium-6 aluminium-4 vanadium surface modified by neodymium:yttrium–aluminium–garnet laser and silicon carbide paper

verfasst von: M. E. Khosroshahi, M. Mahmoodi, H. Saeedinasab

Erschienen in: Lasers in Medical Science | Ausgabe 6/2009

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Abstract

The effects of neodymium:yttrium–aluminium–garnet (Nd:YAG) laser and silicon carbide (SiC) paper on the surface micro-topography of titanium-6 aluminium-4 vanadium (Ti6Al4V) alloy were examined in relation to the response of bone cells. The study was performed in three distinct stages: (1) after surface treatment of samples by laser and SiC paper, the surface hardness, surface roughness, corrosion resistance and surface tension were evaluated; (2) the growth of mouse connective tissue fibroblast cells (L-929) on untreated and treated samples was assessed in vitro; (3) the response of goat osteoblast cells to untreated and treated implanted samples was assessed in vivo. The surface roughness varied between 7 ± 0.02 for laser-treated samples (LTSs) at 140 J cm⁻² and 21.8 ± 0.05 for mechanically treated samples (MTSs). The surface hardness was found to vary from 377 Vickers hardness number (VHN) for MTSs to 850 VHN for LTSs. A corrosion potential of −0.21V was achieved for the LTSs compared with −0.51V for the MTSs. The LTSs exhibited a more hydrophilic behaviour (i.e. wettability) than did the MTSs. No cytotoxicity effect, unlike for the MTSs, was observed for the LTSs. The results of in vivo tests indicated longitudinal growth of osteoblast cells along the grooves on the samples formed by the SiC paper, and multidirectional spreading of the cells on the LTSs.

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Titel: In vitro and in vivo studies of osteoblast cell response to a titanium-6 aluminium-4 vanadium surface modified by neodymium:yttrium–aluminium–garnet laser and silicon carbide paper
verfasst von: M. E. Khosroshahi
M. Mahmoodi
H. Saeedinasab
Publikationsdatum: 01.11.2009
Verlag: Springer-Verlag
Erschienen in: Lasers in Medical Science / Ausgabe 6/2009
Print ISSN: 0268-8921
Elektronische ISSN: 1435-604X
DOI: https://doi.org/10.1007/s10103-008-0628-1

Springer Medizin

Abstract

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