February 2017 Vol. 5 No.2

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Original Research Article

Effect of two surface sealant agents on surface roughness of a nano-hybrid resin composite

Faika Abdelmegid^1*, Fouad Salama², Majedah Al-Homaidhi³, Tarfa Bin Moharib⁴ and Mashari Al-Ohali⁵

¹Associate Professor, Department of Oral Medicine and Diagnostic Sciences, College of Dentistry, King Saud University, Riyadh, Kingdom of Saudi Arabia
²Professor, Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University, Riyadh, Kingdom of Saudi Arabia
³Lecturer, Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University
⁴Specialist, Pediatric Dentistry Division, Dental Department, Security Forces Hospital Program, Riyadh, Kingdom of Saudi Arabia
⁵Dental Intern, College of Dentistry, King Saud University, Riyadh, Kingdom of Saudi Arabia

*Corresponding Author’s E-mail: fabdelmegid@ksu.edu.sa

Accepted February 09, 2016

Abstract

The objective of this investigation was to assess the influence of two surface sealant agents on surface roughness of the nano-hybrid resin composite. Thirty cylindrical specimens were prepared from a nano-hybrid resin composite (Grandio) after covering with Mylar matrix strip with no finishing or polishing. The specimens were randomly allocated into 3 groups/10 each: Group 1/control/Mylar strip/no surface treatment; group 2 surface sealant (Biscover LV) was applied, and group 3 surface sealant (G-Coat Plus) was applied. The surface roughness (Ra) was determined with a stylus profilometer and the topography of representative samples of the control and experimental specimens were evaluated by scanning electron microscopy (SEM). Group 1/control showed the lowest Ra (M±SD) 0.053±0.021. While Ra of group 2 (Biscover LV) and group 3 (G-Coat Plus) were 0.369±0.040 and 0.381±0.047 respectively. There was no statistically significant difference of surface roughness when Biscover LV and G-Coat Plus surface sealants were applied (p>0.05). SEM examination of the surface of all groups showed comparable surface topography. The surface roughness of the nano-hybrid resin composite tested in this study showed lowest Ra value when Mylar strip was used. No significant difference of surface roughness was found when the two surface sealant agents were applied.

Keywords: Composite Glaze, Nano-Hybrid Resin Composite, Surface Roughness, Surface Sealants