5 ‘Biomaterials for bone Regenerative Medicine’ Transtech Publishers, Switzerland CHAPTER 6 ‘Calcium Phosphate-based Materials for Bone Regenerative Medicine’ N. Sooraj Hussain, C.M. Botelho, M. A. Lopes, M. Santos, J. V. Lobato, R. M. Pinto, M. Gutierres and J. D. Santos