Oxygen-Inhibited Coating Roughness of Nanohybrid Composite Resins Compared by Two Polishing Systems

A nanohybrid composite resin in dentistry is a dental restorative material that combines particles of different sizes to improve its mechanical and esthetic properties. It contains nano-sized filler particles (1-100 nanometers), which gives it excellent strength, polishability, and durability. The objective of this research was to evaluate the roughness of the oxygen-inhibited layer in nanohybrid resins using two polishing systems. Forty resin samples were made, applying two systems: (Forma, Ultradent) with (Diamond Pro, FGM) and (Super-Snap, SHOFU); and (Herculite Précis, Kerr) with the same systems. The results showed that, for (Forma, Ultradent) resin, there were no significant differences between the polishing systems, while for (Herculite Précis, Kerr) resin, it was observed that (Super-Snap, SHOFU) was more efficient than (Diamond Pro, FGM). However, no significant differences were found based on resin type.