Chemical Etching of Ultrafine Grained Titanium Surfaces to Optimise Cell Attachment

Abstract:

The goal of this research was to create a surface topography that would promote cell attachment onto Ultrafine-grained Grade 2 Titanium. Morphologies that assist the deposition of bone tissue and reduce colonisation by unwelcome bacteria onto dental implant surfaces are created most often by sand-blasting, chemical etching, or these two in combination. Discs of thickness 2 mm from the machined base material were prepared for this study. After machining, the samples were chemically etched. Three etchants were used: 30 % HCl and 85% H₃PO₄, and the two in combination. The etching temperatures were 20 °C, 40 °C, and 60 °C, the etching times were 5 minutes and 120 minutes. The surface morphologies of the discs were examined by confocal microscope and scanning electron microscope (SEM), and compared to the machined-only samples as reference values. Samples treated in the 30% HCl solution at 40 °C for 120 minutes and then in the 85 % H₃PO₄ solution at the same temperature and time altered macro and micromorphology together in ways which assist the attaching of bone.

• Periodical: Materials Science Forum (Volume 812)
• Pages: 265-270
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.812.265
• Online since: February 2015
• Authors: Attila Terdik, Péter Nagy, Eszter Bognár, Árpád Joób-Fancsaly, József Piffkó
• Keywords: Implant, Micromorphology, Osseointegration, Surface Roughness, Ultrafine-Grained Titanium

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