Method for producing an implant blank

A method for producing an implant blank (100) from a starting body, said implant blank (100) comprising at least one first area, which is a surface area (102), and a second area, which is a core area (101), wherein the surface area (102) has at least one bioactive surface material (502) and extends from at least one first surface (103) in the direction of the core area (101), and the core area (101) has at least one carrier material that can be subjected to mechanical load, characterized in that the starting body has a porosity for controlling a targeted distribution of the bioactive surface material (502) within the starting body and is loaded with a solution (500) of the bioactive surface material (502) in a first step, which is a loading step, and in a second step, which is a distribution control step, the distribution of the bioactive surface material (502) within the starting body is controlled such that the solution (500) has a higher concentration within the surface area (102) than within the core area (101), the control being effected by regulating one or more environmental parameters in a sealed closed environment (200), wherein the distribution of the bioactive surface material (502) is effected within the starting body by a convection current, and wherein a direction of flow and velocity are controlled by targeted generation of environmental parameter gradients by adjusting humidity differences or pressure differences or temperature differences with respect to different surfaces of the starting body.