Effect of surface sealant on the surface roughness of different composites and evaluation of their microhardness

• Published in: European Oral Research Vol. 54; no. 1; pp. 1 - 8
• Main Authors: Gurbuz, Ozge, Cilingir, Aylin, Dikmen, Benin, Ozsoy, Alev, Mert Eren, Meltem
• Format: Journal Article
• Language: English
• Published: Turkey Istanbul University Press 01.01.2020; İstanbul Üniversitesi Yayınları; Istanbul University Faculty of Dentistry; Istanbul University
• Subjects: Analysis; Diş Hekimliği; Hardness; Mechanical properties; microhardness; resin composite; roughness; surface sealant; Tıp; İstanbul; Türkiye; microhardness; surface sealant; mechanical properties; Roughness; resin composite; mechanical; properties
• DOI: 10.26650/eor.20200020
• ISSN: 2630-6158; 2149-2352

The aim of this study was to evaluate the effect of a surface sealant on the surface roughness of different composites and compare their microhardness values. Sixty disc-shaped specimens were prepared and assigned to 6 groups (n =10). Groups were prepared as follows; Group 1 (Herculite XRV Ultra), Group 2 (Beautifil Bulk Restorative) and Group 3 (Filtek Bulk Fill Posterior Restorative). Groups 4, 5, and 6 were prepared by applying a surface sealant (BisCover LV) on the specimens in groups 1, 2 and 3. Surface hardness of the discs in group 1, 2, and 3 and surface roughness of the discs in all groups were measured using the Vickers hardness test and a profilometer, respectively. One-way ANOVA was used to test for differences among the groups. No significant differences were observed in the microhardness and roughness between the experimental and control groups for each restorative materials. Group 3 showed the highest surface hardness and group 4 showed the lowest surface roughness values. Using the BisCover LV resin after the polishing step has no significant effect on the surface roughness. The highest hardness values were obtained for the Filtek Bulk Fill Posterior Restorative after the polishing step. The smoothest surfaces were obtained for all experimental groups using the BisCover LV resin after the polishing step, Herculite XRV Ultra showed lower average roughness values than the other materials.