Abstract
IntroductionThe purpose of this in vitro study was to evaluate the effect of three different polishing systems on the microhardness, surface roughness, and gloss of resin composites.Materials and MethodsThe materials evaluated were 3M™ ESPE™ Filtek™ Z-350 XT (3M™, St. Paul, MN, USA), Grandio (Voco, Cuxhaven, Germany), 3M™ ESPE™ Filtek™ Z250 (3M™, St. Paul, MN, USA), Shofu-Beautifil Flow (Shofu, Kyoto, Japan), and RestoFill HV N-FLO (Anabond Stedman, Chennai, India). A total of 450 samples were fabricated. Three finishing and polishing systems: PoGo® (Dentsply Caulk, Milford, DE, USA), Sof-Lex Spiral, and Sof-Lex Pop-On (3M™, St Paul, MN, USA) were evaluated. Hardness, roughness, and gloss were evaluated after finishing and polishing. The surface roughness was measured with a surface profilometer, microhardness was measured with the Struers Duramin-5 microhardness tester (Struers A/S, Ballerup, Denmark) and gloss was measured using a gloss meter. The measurement values were analysed by Kolmogorov-Smirnov, Shapiro-Wilks test, and two-way ANOVA.ResultsThe Sof-Lex Spiral group exhibited higher mean microhardness (p < 0.001), less surface roughness (p < 0.001), and higher gloss (p < 0.001). Filtek Z-250 exhibited higher mean microhardness (p < 0.001) than Grandio (p < 0.001) and Shofu Beautifil Flow (p < 0.001), and Filtek Z-350 XT exhibited more microhardness than Shofu Beautifil Flow (p < 0.001). Filtek Z-350 XT exhibited lower mean surface roughness than Filtek Z-250 (p < 0.05). Filtek Z-250 polished with Sof-Lex Spiral proved to have higher gloss (34.89 gloss units (GU)) than Grandio and RestoFill HV N-FLO (p < 0.05).ConclusionsHardest, smoothest, and glossiest surfaces were obtained with the Sof-Lex Spiral finishing/polishing system. The mean microhardness of Filtek Z-250 and Filtek Z-350 XT was found to be higher than other composites used in this study. Filtek Z-350 showed a lower mean surface roughness and Filtek Z-250 exhibited a higher mean gloss.
Highlights
The purpose of this in vitro study was to evaluate the effect of three different polishing systems on the microhardness, surface roughness, and gloss of resin composites
Filtek Z-250 polished with Sof-Lex Spiral proved to have higher gloss (34.89 gloss units (GU)) than Grandio and RestoFill HV N-FLO (p < 0.05)
Smoothest, and glossiest surfaces were obtained with the Sof-Lex Spiral finishing/polishing system
Summary
The materials evaluated were 3MTM ESPETM FiltekTM Z-350 XT (3MTM, St. Paul, MN, USA), Grandio (Voco, Cuxhaven, Germany), 3MTM ESPETM FiltekTM Z250 One nanofiller packable composite (Filtek Z-350 XT (3MTM, St. Paul, MN, USA)) with zirconia and silica clusters of 0.6 - 1.4 μm [15], one nanohybrid packable composite (Grandio (Voco, Cuxhaven, Germany)) with 20 - 60 nm glass and silica fillers [4], two nanohybrid flowable composites (Shofu Beautifil Flow (Shofu, Kyoto, Japan) with glass filler particle size -0.01 - 4.0 μm) and RestoFill HV N-FLO (Anabond Stedman, Chennai, India) with fumed silica (60 - 250 nm) and one micro-hybrid packable composite (Filtek Z-250 (3MTM, St. Paul, MN, USA)) with 0.01 - 3.5 μm zirconia-silica] with shade A2 and three finishing and polishing (F/P) systems: PoGo® (Dentsply Caulk, Milford, DE, USA), Sof-Lex Spiral (3MTM, St. Paul, MN, USA), and Sof-Lex Pop-On (3MTM, St. Paul, MN, USA) were evaluated in the present study. Sof-Lex Pop-On is a three-step polishing system composed of medium (20 μm), fine (18 μm), and super-fine (14 μm) aluminum oxide-impregnated discs [17]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
