Microscopic Evaluation of Failed Anode Oxidized Titanium Implant After Decontamination

Objectives: Using the recycle implant in the medical casting industry for fabrication of a new prosthesis is required for needy people. Evaluate and compare the surface topography and porous microstructure of anode oxidized TiUnit Nobel Biocare failed implant by Scanning Electron microscope after decontamination in order to recycle the implant.
Methods: Failed implant was acquired from NYU periodontolgy department, and fixed by formaline10 %, washed, and dehydrated by ethanol. Then the implant was observed with SEM Hitachi with an environmental mode at a low vacuum for surface topography. Then the implant was decontaminated with half-liter buffered solution 14% EDTA, pH7.4, and the solution is refreshed every day for 4 days to remove hard tissue. After that, the implant was bleached with Clorox pH 11 for a half hour to remove the organic tissue. Then the sample was cleaned by water, dried for SEM observation.
The surface texture of the anode oxidized TiUnit Noble Biocare failed implant after the decontamination process and the new anode oxidized TiUnit Noble Biocare implant was compared.
Results: By using SEM and compare topography porous microstructure of failed anode oxidized TiUnite implant after decontamination process by 14% EDTA with the same working distance, vacuum mode and accelerating voltage with different magnifications:
There is no different microstructure and porosity of the anodic-oxidized surface of the Noble TiUnit dental implant between the failed implant decontaminated by 14% EDTA and the new one.
Conclusions: Using the decontamination method for recycling failed implant is feasible.