Abstract
Previously, we reported that the structure of new bone formed around implants and the crystalline structure differed from the cortical bone. Furthermore, we analyzed the crystallization of new bone in a small region after implantation, and detected CaCO3 (calcite and aragonite) in the new bone. Then, we analyzed the cortical bone of a normal rabbit tibia by Imaging Plate-Micro-X-ray diffraction (IPMicro-XRD), and detected CaCO3 (calcite) in the normal bone. The involvement of CaCO3 in the normal bone suggests that it is important to re-evaluate the mechanism of the bone.