Plasma-enriched hydroxyapatite-based fillers and methods of filling bone gaps in oral surgery, orthopedic procedures, and cosmetic surgery are disclosed. The fillers contain a substance comprising an anticoagulant antidote, a substance comprising hydroxyapatite, and blood or plasma. The blood may be either autologous or allogeneic. The fillers have a dough-like consistency and can be manipulated easily by a surgeon.