Bone filling guiding regeneration of bone tissue and the subsequent restitution of bone function is one of the most important fields of application of ceramic materials in modern bone surgery. Whereas in the case of bioceramics used for manufacturing of structural elements for joint prosthesis, reliability and mechanical properties matter most, in the case of materials for bone regeneration the features that enable forming of good mineralized bone tissue, closely connected to the surface of implanted (grafted) material are the most important ones. Therefore the shape and texture as well as microstructure, chemical and phase composition, and surface properties of this kind of ceramic biomaterials are of singular importance.
The present work evaluates alumina biomaterials of different microstructure and surface properties that were obtained from parent compositions of diversified raw materials. For this goal test samples of porous and compact alumina were prepared. Comparative tests of the main properties were conducted, including the following: degree of consolidation, chemical and phase composition, identification of the type and layout of crystalline phases and mechanical properties of alumina materials. Chemical methods, X-ray and microscopic examinations were used.
Analysis of the results demonstrated differences in apparent density, compressive strength and microstructure of alumina materials obtained from diversified raw materials. These differences could affect the behavior of porous alumina grafts in the environment of living organism.
This research was supported by the State Committee of Scientific Research (grant No. 3 T08D 044 26)