The functionality of biomaterials must assure a good osteointegration of endobone implants used for the maxilo-facial implants. Materials must present a gradient for porosity and one for composition (presents of a bioactive phase in titan matrix). The exterior porosity, in the contact zones with the bone tissue, favors the incipient cellular processes (the adhesion and attachment of osteoblastes, proliferation and cellular differentiation and nucleation of mineral bone). The pores must be open and with a specific surface more great. It’s preferred the exterior intercommunicating porosity.