SigmaGraft: InterOss 1.0mm-2.0mmHydroxyapatite bone grafting material for use in dentistry. Made from a proven multi step purification process that leaves only a bone composition, it is a highly purified osteoconductive material for bone regeneration. Having an interconnected network of macro and micro pores and large inner surface areas that provides an ideal environment for cell attachment, InterOss is chemically and structurally comparable to mineralized human bone.