Surface roughness of nanofill and nanohybrid composite resin and ormocer-based tooth-colored restorative materials after several finishing and polishing procedures

Journal of Biomaterials Applications
Meserret Başeren

Abstract

The purpose of this study was to evaluate the effect of several finishing and polishing procedures on the surface roughness of nanofill and nanohybrid composites and ormocer-based dental restorative materials. The materials included a nanofill composite (Supreme); a nanohybrid composite (Grandio); and an ormocer (organically modified ceramic) (Admira). Forty specimens of each material were prepared using a Mylar strip (polyester strip) and randomly divided into four finishing and polishing groups (n =10): (I) Diamond bur/Super-snap Rainbow Technique Kit(Al(2)O(2)-coated, graded abrasive discs); (II) Diamond bur/Astropol and Astrobrush system (silicone abrasive polishers and brush system); (III) Tungsten carbide bur/Super-snap Rainbow Technique Kit; and (IV) Tungsten carbide bur/Astropol and Astro-brush system. The average surface roughness (Ra) in micrometers was measured using a "Mahr Perthometer S4P" Surface Roughness Tester and the data were compared using ANOVA at P <or=0.05. The results of this study indicated that the Mylar strip produced the smoothest surface on all materials and among the finishing-polishing methods the first and the third methods performed significantly smoother surfaces than the second and the fourth ...Continue Reading

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