Microstructures of plasma-sprayed hydroxyapatite-coated Ti-6Al-4V dental implants.
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.
Tufekci
E
E
Ohio State University, Columbus, USA.
Brantley
W A
WA
Mitchell
J C
JC
McGlumphy
E A
EA
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*
D000497:Alloys; D001672:Biocompatible Materials; D015921:Dental Implants; C031462:titanium alloy (TiAl6V4); D017886:Durapatite; D000535:Aluminum; D014025:Titanium; D002118:Calcium