The production of ceramic bone substitutes using direct foaming processes offers a promising opportunity to develop customised solutions for bone regeneration applications. Two different routes for the production of such ceramic bone foams are being investigated: one based on a silica gel foam that hardens in air and one that requires subsequent thermal treatment (calcination) to achieve the desired properties.Various analysis techniques are used to characterise the physical properties of the foams produced. These include scanning electron microscopy (SEM) to analyse the microstructure, the determination of density and porosity, rheology, tension and bending tests to determine the mechanical strength.In addition, the biocompatibility of the ceramic bone foams will be analysed, as this is a crucial aspect for their potential use in biomedical applications to ensure that the foams do not cause undesirable reactions in the body.The results of this study will help to deepen the understanding of the production and characterisation of ceramic bone foams and expand their potential applications in regenerative medicine. This research thus contributes to the development of advanced bone regeneration materials that can be used to improve the treatment of bone injuries and bone regeneration.