Abstract: Method for the realization of a biologically compatible prosthesis component including the steps of having at least two materials with different physical/chemical features, defining in forming means the component as a composition of at least two volumes of at least two materials, sintering the component in the forming means and at a preset sintering temperature (T1).

Abstract: Coatings of scarcely crystalline carbonated hydroxyapatite are deposited on metallic or ceramic substrates, by immersing the substrates in a solution containing calcium phosphate and bicarbonate ions, with a molar ratio calcium/phosphate from 0.8 to 2 and a pH from 6.8 to 8.0. Subsequently, the solution is heated to 50-80° C., thus raising the pH and causing a spontaneous deposition of carbonated hydroxyapatite on the substrates. The obtained coatings are highly biocompatible, osteoconductive, bioactive and biodegradable, and can be utilized in structures used for preparing orthopaedic and dental prostheses and implants.