Avaliação da rugosidade superficial de dois materiais estéticos submetidos à diferentes sistemas de polimento intra-oral

Abstract

The aim of this study was to evaluate the influence of polishing systems on the surface roughness of two aesthetic restorative materials. 54 Bulk fill composite specimens (3M Espe) were prepared using a metallic matrix and photoactivated under a polyester strip, and 54 lithium disilicate specimens (E-max, Ivoclar Vivadent) were pressed as manufacture’s instruction. Each material was randomly divided in three groups (n = 18) a control group and two other groups according to the polishing system to be used: Resin: (E1) Sof-Lex Pop-On (3M Espe) and (E2) Dimanto (VOCO); Ceramics: (E1) Exa-Cerapol (EDENTA) and (E2) Kenda dental polishers (Kenda). The mean surface roughness (Ra) of both materials was measured in E0 (polyester strip or glaze), E1 (after using diamond tips, simulating occlusal adjustment), E2 (polishing system), using a Mitutoyo SJ- 400. The results were analyzed by Two-way ANOVA of repeated measures and Tukey's test, with a significance level of 5%. The Sof-Lex ™ Pop-On polishing system promoted roughness similar to that of the polyester strip (E0) in both groups (E1 and E2). For ceramics, the results showed no significant difference in each analyzed step and between the roughness obtained by both polishing systems. Therefore, we can conclude that the polishing on the resin, regardless of the type of polishing system used, reduced the roughness produced by the diamond tip, promoting an ideal surface smoothness. However, for ceramics, the polishing with the proposed systems was not able to promote the desired surface smoothness.