INVESTIGATION OF ANTIBACTERIAL ACTIVITY TITANIUM ALLOY AT DIFFERENT SURFACE TREATMENT

Titanium-alloy materials have been used for dental implants due to their excellent biological compatibility, superior mechanical strength and high corrosion resistance. The osseointegration of titanium dental implants is related to their composition and surface treatment. A better anti-bacterial performance of the abutment seated in the prosthetic crown is beneficial for the osseointegration and for avoiding the infection after implantation surgery.

Plasma Electrolytic Oxidation (PEO) was performed on Ti in electrolyte containing calcium acetate monohydrate (Ca(CH3COO)₂•H₂O) and sodium phosphate monobasic dihydrate (Na₂HPO₄•2H₂O) using a pulse power supply.

All the oxidized coatings contained Ca and P as well as Ti and O, and the porous coatings were made up of anatase, rutile and hydroxyapatite. All samples were tested for antibacterial activity.