Nano Silica and Nano Graphene Used in Dental Fillers: The Relation Between the Mechanical and Topography Properties

Page No.: 20-25 Volume: 14, Issue 1, 2020 ISSN: 1815-9346 Research Journal of Medical Sciences Copy Right: Medwell Publications Abstract: In the modern medicine, there are a lot of medical uses for the nanomaterial’s because it has a physical and mechanical features that is suitable with a lot of medical technologies. That we use the nano silica and nano graphene to improvement the mechanical properties of light-curing dental fillings. Nanographene and nanosilica added to composite resin have been blended with resin composite and with precise weight ratios. The fillers formed by LED curing during three time periods 20, 25, 30 sec mold made in dimensions (6×3 mm). The results of the mechanical properties of the fillings containing of nano graphene (compressive strength test) showed that it is more than the compressive strength of nano silica. The reason for the high compressive strength of fillings containing of nano graphene is due to the roughness of the surface of the fillings nano graphene higher than the roughness of the fillings nano silica surface as shown in the AFM measurement of the atomic force microscope. All the results of the study are within the International Quality Standards (ISO 4049) for dental restoration materials. The increase of the time period of the curing is very important to improve the polymerization process which greatly advances the mechanical and physical properties. The study of mechanical properties has shown that the nano graphene filler to look at compressive strength is more than the compressive strength of nano-silica. The relative roughness of the RMS indicates that the surface of the formed, crystallized and super smooth solids is as indicated in the Atomic Force Microscopy (AFM).