COMPARATIVE STUDY REGARDING THE EFFECT OF DIFFERENT FINISHING AND POLISHING SYSTEMS...

What is it about?

Introduction: One of the main objectives of composite restorations procedure is to obtain a smooth surface for aesthetic reasons and for oral health. The aim of this study was to assess the surface morphology of a bulk fill composite material after finishing and polishing with three different finishing and polishing systems. Materials and methods: Filtek Bulk Fill Posterior composite resin was chosen for this study (3M ESPE St. Paul, MN, USA). Twenty cylindrical samples 5 mm in diameter and 2 mm thick were made using plastic molds. They were randomly and equally assigned to four groups. In group 1 (control) the samples were not subjected to finishing and polishing procedure. In study groups 2-4, the samples were finished using two tungsten carbide burs and then polished using one step Occlubrush system (KerrHawe SA, Switzerland) – group 2, with the two step Sof-Lex system (3M ESPE) – group 3, and with the multi-step Super Snap system (Shofu, Inc. Kyoto, Japan) – group 4. The surface characteristics of the samples were quantitatively analyzed using profilometry and qualitatively evaluated by scanning electron microscopy. The Kolmogorov-Smirnov normality test was used to determine the distribution of data in groups. ANOVA and Tukey post hoc statistical tests were used to compare the results in groups. Results: Finishing with tungsten carbide burs and two-steps Sof-Lex polishing system and one-step polishing system Occlubrush determined, higher roughness when comparing to multi-step Super Snap system. Conclusion: The surface characteristics of the studied composite resin were influenced by the type of finishing and polishing system used. Keywords: bulk-fill composite, finishing and polishing systems, profilometry, SEM.

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