The Assessment of the Abrasiveness for Resin Composite Finishing & Polishing Systems

Objective: This in vitro study was aimed to assess the abrasiveness of 4 different composite finishing and polishing systems, on two nano-hybrid materials.
 Methods: 40 disc samples were prepared mm diameter 2 thickness for each resin (Tetric EvoCeram BulkFill A1 body IPS Empress Direct A1; Ivoclar Vivadent, Schaan, Lichtenstein; n=80 total). Each group divided into system subgroups (Sof-Lex Disc, 3M, St. Paul MN, USA; Enhance&Pogo, Dentsply Sirona, Konstanz, Germany; OptraGloss, Shaan, Twist Dia, Kuraray Noritake, Tokyo, Japan; n=10 subgroup). Single surface sample roughened with 600 800 grit sandpapers (Carbimet, Special Silicone Carbide Grinding Paper, IL, USA), respectively. Initial (t1) measured a digital micrometer (BMI 770150, Germany). Then, finishing&polishing systems preformed one side samples, at 10 000 rpm, dry conditions, by single operator (30 s materal). Final thicknesses (t2) after procedures. Statistical analyses performed regarding t2-t1 values. Two-way Anova test used level abrasion materials. Tukey HSD multiple comparisons.
 Results: In terms materials, presented significantly greater (52.85 ± 42.26B) than Tetric Evo Ceram Bulk Fill (p < 0.001). & observed Sof-Lex Disc (91.25 47.22b) among all There no significant differences abrasiveness, between Enhance&Pogo - Optragloss = 0.859), Dia 0. 891), – 0.440).
 Conclusion: Both type material considered effective factors abrasion. The greatest 4-step (91 µm average), total 120 seconds application. 2-step similar ranged 24 36 average, 60 equal polishing.