Highly porous bioceramics based on octacalcium phosphate

Abstract

The method of obtaining highly porous ceramics by chemical transformation of ceramics based on α-tricalcium phosphate (TCP) to dicalcium phosphate dihydrate (DCPD) followed by hydrolysis to octacalcium (OCP) phosphate was explored. This method provides an opportunity to get monophase OCP as well as biphasic calcium phosphate with a different ratio of α-TCP/DCPD or DCPD/OCP. The microstructure and mechanical properties depending on the phase composition and processes in held conditions were studied. Using this method makes it possible to increase the compressive strength by up to 7 times because of morphological modifications inside the crystals.