الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 108 |  |  |
| | | from | 108 | | |
Abstract
Aim: This in vitro study evaluated the effect of polishing with different polishing systems on the surface roughness and bacterial adhesion of different tooth colored restorative materials. Methodology: A total number of 84 disk-shaped specimens (10 mm in diameter × 2 mm depth) were made with bioactive ionic resin [Activa bioactive restorative], resin modified glassionomer [Fuji 2 LC] and conventional glassionomer [Equia Fil,] (28 per each material group). The specimens were finished with super-fine grit finishing diamond bur and polished by a single operator using multi-step system (Sof-Lex), two-step system (Enhance polishing pastes), and one-step system (pogo), following the manufacturer’s instructions. Surface roughness was measured by Environmental Scanning Electron Microscope (ESEM). Bacterial adhesion tests were carried out by immersion of the specimens in a suspension of streptococcus mutans 1×106CFU/ mL, colony-forming units (CFU/mL) were evaluated. Data were analyzed by two-way analysis of variance with an adjustment for multiple comparisons and Pearson correlation. Results: Statistically significant differences in surface roughness and bacterial adhesion were identified by varying the polishing systems (p <0.001) and by the interaction between polishing system and restorative material (p <0.001). Pairwise comparisons revealed higher surface roughness and bacterial adhesion for Equia, Activa, and Fuji 2 LC when polished with Enhance polishing pastes. Conclusion: Surface roughness and bacterial adhesion were affected by restorative material type and polishing systems. The one-step system produced lowest surface roughness, while the two-step system produced the highest surface roughness and the bacterial adhesion of all.