The Impact of Different Acids Etch on Sandblasted Titanium Dental Implant Surfaces Topography

Abstract

Purpose: The study was conducted to evaluate the effect etching with different types of acids on sandblasted titanium dental implant surface topography. Materials and Methods: Pure polished titanium discs were blasted with Aluminum oxide powder (Al 2 O 3) with particle size 50 µm using 4.5 bar pressure. Then the blasted discs were etched using different acids solutions separately for 5 min, 15 min, 30 min. Surface roughness was measured using profilometry. Topography was examined using scanning electron microscopy (SEM). Results: The morphology and the surface roughness of titanium discs was changed dramatically after blasting with alumina, a rough surface was visible to the naked eye with Ra value of 0.627 µm. A steep increase in surface roughness (Ra value) of alumina blasted/acid etched surfaces were noticed for all acid types immediately after the start of etching. The increase in Ra was more than 0.2 µm for all acid types. Slight changes in Ra value were observed with longer etching times. Conclusions: This work shows that surface roughness using blasting procedure depended upon type and particle size of used material and original surface roughness of the substrate. Etching blasted surface with different types of acids produce different surface topography and different roughness, and a slight difference in duration have significant impact on titanium surface topography.