the invention relates to a process for producing a bone - regeneration material . according to the method , a bio - compatible , open - pored body is exposed to a vacuum and osteoinductive and / or osteogenic substances are absorbed into the pores of the body , for example by means of a vacuum generated therein . it is thus possible to produce a bone - regeneration material , which contains osteoinductive and / or osteogenic substances in the pores of the bio - compatible body , said substances acting as a network structure for new somatic cells that are to grow into the porous body .