In the pure titanium machined surfaces, the control specimen showed a more or less rough machined surface composed of alternating positive and negative lines corresponding to grooves and ridges. After treatment, machining line was more pronounced for the control specimens. but in general, test specimens were similar to control.

In the SLA surfaces, the control specimen showed that the macro roughness was achieved by large-grit sandblasting. subsequently, the acid-etching process created the micro roughness, which thus was superimposed on the macro roughness.

In the SLA surfaces, irrespective of the application time of 50mg/ml tetracycline - HCl solution , in general, test specimens were similar to control.

In the TiO₂blasted surfaces the control specimen showed the rough surface with small pits. The irregularity of the TiO₂blasted surfaces with 50mg/ml tetracycline - HCl solution was lessened and the flattened areas were wider relative to the application time of tetracycline - HCl solution.