The surface and cross-section characteristics of the plasma-sprayed calcium phosphate coatings, along with the microstructures and elemental compositions near the titanium alloy interface, were investigated by scanning electron microscopy for two different dental implants of proprietary compositions: Integra!® (Calcitek) and BioVent ® (Dentsply). Elemental concentrations (Ca, P, Ti, AI, and V) near the interfaces were obtained by X-ray energy-dispersive spectroscopy. Coating surfaces exhibited a splat deposition topography of greatly differing microstructural scale for the two implants, along with other features characteristic of the plasma-spraying process; cross-sections of the coatings revealed minimal porosity. Some interdiffusion of principally titanium and calcium was found within a narrow region near the ceramic- metal interface, perhaps contributing to chemical bonding.
Brantley, W. A.; Tufecki, E.; Mitchell, J. C.; Foreman, D. W.; and McGlumphy, E. A.
"Scanning Electron Microscopy Studies of Ceramic Layers and Interfacial Regions for Calcium Phosphate-Coated Titanium Dental Implants,"
Cells and Materials: Vol. 5
, Article 7.
Available at: http://digitalcommons.usu.edu/cellsandmaterials/vol5/iss1/7