[Bone substitution with semisynthetic and natural apatite].

Authors demonstrate, based on animal experiment first in the literature of this country both the synthetic and the natural (coral) apatite as a bone substituting material. Complete and partial bone defects in 24 animals of the experience were filled with the materials examined. The speed of healing after the transplantation of the two implants, the mechanical characteristics of the healing bone (fracture solidity) are evaluated using both materials and in both types of the defect. It is stated that evaluable difference could not be observed from the viewpoint of the duration of healing between the two materials whereas considering the fracture solidity the coral substitution proved to be significantly better. The differences between the groups considering the complications (suppuration, pseudoarthrosis) are also assessed.