Abstract

COELHO, Keylla Dayanne et al. Influence of the composition of gases during plasma surface modification on adhesion of primary cells from dental pulp. Rev. Bras. Odontol. [online]. 2014, vol.71, n.1, pp. 67-71. ISSN 1984-3747.

Samples of titanium were nitrided using plasma and a composition of two gases: 80% H2-20% N2 and 20% H2-80% N2. The influence of these treatments on their physical chemical properties and biological response when subjected to the primary cell culture of dental pulp were studied. Analyses by X-ray diffraction indicate the formation of TiN in both nitrided samples in contrast to the non-nitrided surface samples that contained only the Ti-α phase. Changes in hardness, topography and wettability of these samples compared to non-nitrided samples were found as well. Finally, the analysis of cell’s adhesion in these samples indicate that treatment increases its value being higher for samples treated at higher hydrogen concentration.

Keywords : titanium; plasma nitriding; by cathodic cage discharge; primary dental cells..