Fabrication of cancel. ous bone type bone replacement

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Feasibility of cancellous bone type bone replacement was evaluated by learning the cancellous bone. First,αtricalcium phosphate foam was prepared using polyurethane foalln as a template based on so-called ceralnics foam method. Then, the foam was treated hydrothermally in the presence of ammonium carbonate. Carbonate apatite foaln that has the silnilar interconnected porous structure was found to be prepared. Carbonate apatite foam was found to be replaced by bone when the bone defect was reconstructed by the carbonate apatite foam.