[Significance of synthetic calcium phosphate ceramics as a bone replacement material].

With reference to the chemical and crystallographic differences, the line is drawn against bone substitute material produced from biological material. Extensive animal experiments demonstrated the good healing properties when using calcium phosphate ceramics in bony defects. In the long term, there was more new bone formed after filling up the defect with calcium phosphate ceramics than when using autologous bone grafts. Clinically, there is an indication for using this material to fill up bone cysts and defects if there is enough time for biodegradation; in other cases, a mixture using an autologous spongoid graft is necessary.