Osteoplastic "Bio-Ost" matrix with a special technology for reducing the mineral phase of the bone preserves collagen and native growth factors. After exposure in hydrating solutions, it has plasticity — it can change shape and is easily modeled. Demineralized blocks are less durable than standard sponge blocks, but they are more quickly incorporated into the metabolism and can be used in areas with low regenerative potential, for example, in the treatment of atrophic false joints. The replacement period for bone tissue is 4-12 months.