In recent years, some Si and Mg containing ceramics have drawn interests in the development of bone implant materials.6, 7 and 8 Previous research suggests that silicon, as an essential element in skeletal development. Calrisle9, 10 and 11 first reported in the 1970s that silicon was uniquely localized in the active areas of young bone and involved in the early stage of bone calcification. Similar studies by Schwarz and Milne12 have shown that silicon deficiency in rats resulted in skull deformation, with the cranial bones appearing flatter than normal.