The efficiency of a new polishing material: nanotechnology liquid polish

This study evaluated the efficiency of a nanotechnology liquid polish system on the surface roughness of two different types of nano resin composites.

The resin composite materials tested in this study were Ceram-X (Dentsply) and Clearfil Majesty Esthetic (Kuraray). Forty standard samples of each resin composite material were prepared and stored in artificial saliva at 37 degrees C for one week. The samples of each material were randomly assigned to one of four test groups (n = 10) and contoured with carbide burs, except for Group 1 (control). Group 2 was treated with aluminum oxide-impregnated polymer points (Enhance Finishing System, Dentsply), followed by diamond-impregnated micropolishing points (PoGo, Dentsply); whereas Group 3 was treated with only a nanotechnology liquid polish system (Lasting Touch, Dentsply) and Group 4 was treated with aluminum oxide-impregnated polymer points and diamond-impregnated micropolishing points, then the nanotechnology liquid polish system. Surface roughness values (Ra) of all samples were obtained with an optical pro-filometer. The difference between the groups was assessed with one-way analysis of variance and the Kruskal Wallis test.

All finishing and polishing techniques created statistically rougher surfaces than the control group (p < 0.001). The lowest Ra values were detected in Group 4, although significant differences were not found between Groups 2 and 4 (p > 0.001) independent of the type of resin composites.

With the combination of finishing and polishing procedures, a nanotechnology liquid polish application may provide a more glossy surface for resin composite restorations.