Abstract
AbstractSome kinds of metals, such as titanium and its alloys, bond directly to living bone without fibrous tissue. One of the key techniques for enhancing bone-forming ability of the metallic biomaterials is to modify their surface using bioactive ceramics. This chapter introduces various coatings on the metals to give high bioactivity, which is to have an effect on bonding to living bone. The first section is concerned with bioactive ceramic coatings using calcium phosphates or calcium silicates. These coatings show high bonding strength and enhance the biocompatibility, which refers to ability of materials to interact with living tissue and cells, in vivo and in vitro. The next section describes bioactive glass and glass-ceramic coatings on the metal surface. These materials have a significant advantage in that their chemical/physical properties can be controlled by the choice of the chemical composition. The third section is concerned with modification of Ti and its alloys for forming bioactive oxide layers.KeywordsBioactivityCalcium phosphateCalcium silicate,Bioactive glassTitanium oxide
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