Patent ID: 7087540

Claim:
Resorbable bone replacement and bone formation material based on porous β-tricalcium phosphate (β-TCP), produced by (a) baking a phosphate powder of a chemical composition having residue on baking which yields theoretically chemically pure tricalcium phosphate; (b) forming blanks having microporosity using the chemically pure tricalcium phosphate (β-TCP); and (c) providing the baked blanks with substantially tubular pores, wherein formation of thermodynamically stable adjacent phases of β-TCP is inhibited, wherein the method further comprises; (i) powdering a presynthesis product obtained according to step (a), (ii) optionally baking the powdered presynthesis product together with phosphate powder according to step (a) and powdering the material obtained and optionally repeating step (ii) at least once; (iii) compressing the powdered product obtained in step (i) or step (ii) to form the blanks of step (b) and subjecting the blanks formed to final ceramic baking; and (iv) subjecting the baked blanks, at least about 99.5% of which consists of pure β-tricalcium phosphate (β-TCP), to step (c), wherein the baked blanks are resorbable in vivo.