Evaluation of titanium oxide-wollastonite-hydroxyapatite composites as a potential bone replacement material
List of Authors
  • R. Dinesh , S. Meenaloshini

Keyword
  • Bone replacement, Wollastonite, Titanium Oxide, Hydroxyapatite

Abstract
  • Composite biomaterials have become popular in the medical field and has high demand. Calcium silicate ceramics, in particular wollastonite (CaSiO3), is commonly used as a biomaterial for bone regeneration. The combination of wollastonite with titanium oxide (TiO2) and hydroxyapatite has the potential to be used as a material for bone regeneration. Titanium oxide, wollastonite and hydroxyapatite (TiO2-CaSiO3-HA) composite/s were prepared and characterized by means of physical and mechanical properties. The composition used in this research displayed greatest mechanical and physical properties when compared to pure wollastonite. The composites were sintered at various sintering temperatures and held for 1.5 hours respectively. Samples sintered with a holding time of 1.5 hours and a higher titanium oxide content in the composite displayed good modulus of elasticity, and a fair amount of porosity. TiO2-CaSiO3-HA composites were immersed in Hartman’s solution and it was found that an apatite layer was formed on the surface of the samples. These results indicate that the TiO2-CaSiO3-HA composites have the potential to be a future bone replacement material.

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