Synthesis and in vitro characteristics of biogenic-derived hydroxyapatite for bone remodeling applications.

The inorganic component of bone matrix, hydroxyapatite (HAp) (with formula Ca(PO)(OH)), can be obtained from inexpensive waste resources that serve as excellent calcium precursors. In the present study, HAp nano-powder was synthesized from eggshells (ES) and crab shells (CS) by wet chemical precipitation method. Also, a hybrid sample was considered which is a mixture of HAp nano-powder synthesized from eggshells (25%) and crab shells (75%) (EC).