Profilometric analysis of OptraPol®, OptraGloss®, and Sof-Lex® polishing systems on surface roughness of Endure Nano composite: An in vitro study

Aim: The aim of this study was to evaluate the efficacy of commercially available polishing systems, 3M Sof-Lex ® Diamond Polishing Spiral, Ivoclar Vivadent OptraPol ® , and Ivoclar Vivadent OptraGloss ® , on the surface roughness ( R a ) of Septodont Endure Nano composite using a profilometer. Materials and Methods: Thirty-six disc-shaped specimens (8 mm diameter and 4 mm thickness) of Endure Nano composite were fabricated using a custom-made mold and polymerized with an LED light-curing unit. All specimens were sequentially finished under running water with 400-, 600-, and 1000-grit silicon carbide abrasive papers to standardize surface texture and then stored in saline at 37°C for 24 h. The samples were randomly divided into three groups ( n = 12): Group I – Sof-Lex ® Diamond Polishing Spiral (3M ESPE, St Paul, MN, USA), Group II – OptraGloss ® (Ivoclar Vivadent AG, Schaan, Liechtenstein) Composite Kit Restoration Polisher and Group III – Optra Pól ® (Ivoclar Vivadent AG, Schaan, Liechtenstein) Composite Restoration Polisher; the polishing procedure for all three polishing systems was performed according to manufacturer instructions. Surface roughness ( R a ) was measured at three points per specimen using a profilometer, and mean values were calculated. Results: A statistically significant difference was found among the groups ( P < 0.005). OptraGloss ® ( R a = 0.2163 µm) demonstrated the lowest surface roughness, indicating the smoothest finish, followed by OptraPol ® ( R a = 0.4080 µm). In contrast, 3M Sof-Lex ® ( R a = 0.5086 µm) exhibited the highest surface roughness. Conclusions: OptraGloss ® was the most effective polishing system, producing a smoother surface compared to both OptraPol ® and 3M Sof-Lex ® .