Surface Modification of Direct-Current and Radio-Frequency Oxygen Plasma Treatments Enhance Cell Biocompatibility

The sand-blasting and acid etching (SLA) method can fabricate a rough topography for mechanical fixation and long-term stability of titanium implant, but can not achieve early bone healing. This study used two kinds of plasma treatments (Direct-Current and Radio-Frequency plasma) to modify the SLA-t...

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Bibliographic Details
Published in:Materials 2017-10, Vol.10 (11), p.1223
Main Authors: Chou, Wan-Ching, Wang, Rex C-C, Liu, Cheng, Yang, Chyun-Yu, Lee, Tzer-Min
Format: Article
Language:English
Subjects:
Biocompatibility
Blasting
Healing
Implantation
Oxygen plasma
Plasma
Protein adsorption
Radio frequency
Sandblasting
Surgical implants
Topography
X ray photoelectron spectroscopy
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Summary:The sand-blasting and acid etching (SLA) method can fabricate a rough topography for mechanical fixation and long-term stability of titanium implant, but can not achieve early bone healing. This study used two kinds of plasma treatments (Direct-Current and Radio-Frequency plasma) to modify the SLA-treated surface. The modification of plasma treatments creates respective power range and different content functional OH groups. The results show that the plasma treatments do not change the micron scale topography, and plasma-treated specimens presented super hydrophilicity. The X-ray photoelectron spectroscopy (XPS)-examined result showed that the functional OH content of the RF plasma-treated group was higher than the control (SLA) and DC treatment groups. The biological responses (protein adsorption, cell attachment, cell proliferation, and differentiation) promoted after plasma treatments, and the cell responses, have correlated to the total content of amphoteric OH groups. The experimental results indicated that plasma treatments can create functional OH groups on SLA-treated specimens, and the RF plasma-treated SLA implant thus has potential for achievement of bone healing in early stage of implantation.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma10111223