The present invention relates to a process for preparing a body having an osseointegrative topography formed on its surface. The process comprises the steps ofA) providing a primary body made of a titanium-zirconium alloy containing 13 to 17 wt-% of zirconium, the alloy further containing iron as an alloy component in an amount of less than 0.05 wt-%,B) sandblasting the primary body,C) at least partially removing the native oxide layer formed on the titanium-zirconium alloy by treating the implant with a pickling solution comprising HF and HNO3； andD) etching the sandblasted primary body with an etching solution comprising hydrochloric acid, sulfuric acid and water.
