title: Microstructures of plasma-sprayed hydroxyapatite-coated Ti-6Al-4V dental implants.
abstract: The purpose of this study was to investigate the microstructure of plasma-sprayed hydroxyapatite coatings and the elemental composition near the coating-substrate interface for two commercial implants, using the scanning electron microscope. Both coating surfaces and cross-sectioned specimens were examined. The results indicated that while the surface microstructures of both implants were consistent with the plasma-spraying process, the scale of the constituents was much finer for one product. In cross-section, both coatings exhibited minimal porosity and intimate contact with the titanium alloy substrate. It was found that limited interdiffusion of titanium and calcium occurred near the interface.
authors.affiliation: Ohio State University, Columbus, USA.
authors.forename: E
authors.initials: E
authors.lastname: Tufekci
authors.forename: W A
authors.initials: WA
authors.lastname: Brantley
authors.forename: J C
authors.initials: JC
authors.lastname: Mitchell
authors.forename: E A
authors.initials: EA
authors.lastname: McGlumphy
mesh_terms: D000497:Alloys; D000535:Aluminum / Q000032:analysis; D001672:Biocompatible Materials / Q000737:chemistry*; D002118:Calcium / Q000032:analysis; D015921:Dental Implants; D004058:Diffusion; D017886:Durapatite / Q000737:chemistry*; D004577:Electron Probe Microanalysis; D008422:Materials Testing; D016062:Porosity; D013499:Surface Properties; D014025:Titanium / Q000032:analysis / Q000737:chemistry*
chemical_list: D000497:Alloys; D001672:Biocompatible Materials; D015921:Dental Implants; C031462:titanium alloy (TiAl6V4); D017886:Durapatite; D000535:Aluminum; D014025:Titanium; D002118:Calcium