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,b) sandblasting the primary body, andc) etching the sandblasted primary body with an etching solution comprising hydrochloric acid, sulfuric acid and water at a temperature of above 80°C to obtain the body, said etching being performed for a duration of 350 seconds at least.
