Microstructure and Biological Properties of Plasma Sprayed Novel Bioactive Coatings

In this investigation, bioactive ceramic materials, including dicalcium silicate, titania, and zirconia, were deposited on titanium substrates by plasma spraying in order to determine their effect on the bioactivity of metal implants. Cell-seeding tests show that MG63 osteoblast-like cells grow and proliferate well on each of the coating materials. In the case of Ca₂SiO₄, the presence of silicon ions is thought to be the key to this behavior. In regard to TiO₂ and ZrO₂, the bioactivity is thought to result from the nanostructured surfaces and special surface compositions.