The impact of different low-pressure plasma types on the physical, chemical and biological surface properties of PEEK

Plasma treatment can be used as surface of PEEK (poly-ether-ether-ketone) to increase the bonding strength between veneering composite and dental prosthetic frameworks or enhance biocompatibility implants. These improvements are probably based on chemical changes surface. However, aim study was evaluate impact different low-pressure plasma treatments properties PEEK, such roughness, hydrophilicity, micro-hardness, crystallinity biological activity PEEK. Due treatments, 143 disc-shaped specimens pure implantable were divided into 4 groups: (no treatment, n = 29), H-PEEK (hydrogen 38), O-PEEK (oxygen H/O-PEEK (hydrogen/oxygen with a gas mix ratio 2:1, 38). Subsequently, contact angle, crystallinity, micro-hardness human osteoblast cell coverage area each group examined. The plasma-treated groups increased significantly compared untreated group, whereas significant differences in results tests could shown all up test force 0.02N. Cell density higher treated vs. surfaces. Oxygen H/O revealed most effective, worked ten times faster achieve same effects. hydrogen-oxygen, 2/1-mixed combines effect hydrogen oxygen which strongly improve implant material, HOB adhesion.