TY  - JOUR
T1  - Nano Silica and Nano Graphene Used in Dental Fillers: The Relation Between the Mechanical
and Topography Properties
AU - Ali Hameed, Dhulfiqar AU - Ameer, Nihadabdul 
JO  - Research Journal of Medical Sciences
VL  - 14
IS  - 1
SP  - 20
EP  - 25
PY  - 2020
DA  - 2001/08/19
SN  - 1815-9346
DO  - rjmsci.2020.20.25
UR  - https://makhillpublications.co/view-article.php?doi=rjmsci.2020.20.25
KW  - Nanographene
KW  -nanosilica
KW  -surface morphology
KW  -compressive strength
KW  -roughness
KW  -curing
AB  - In the modern medicine, there are a lot of<br>
medical uses for the nanomaterial’s because it has a<br>
physical and mechanical features that is suitable with a<br>
lot of medical technologies. That we use the nano silica<br>
and nano graphene to improvement the mechanical<br>
properties of light-curing dental fillings. Nanographene<br>
and nanosilica added to composite resin have been<br>
blended with resin composite and with precise weight<br>
ratios. The fillers formed by LED curing during three time<br>
periods 20, 25, 30 sec mold made in dimensions<br>
(6&times;3 mm). The results of the mechanical properties of the<br>
fillings containing of nano graphene (compressive<br>
strength test) showed that it is more than the compressive<br>
strength of nano silica. The reason for the high<br>
compressive strength of fillings containing of nano<br>
graphene is due to the roughness of the surface of the<br>
fillings nano graphene higher than the roughness of the<br>
fillings nano silica surface as shown in the AFM<br>
measurement of the atomic force microscope. All the<br>
results of the study are within the International Quality<br>
Standards (ISO 4049) for dental restoration materials. The<br>
increase of the time period of the curing is very important<br>
to improve the polymerization process which greatly<br>
advances the mechanical and physical properties. The<br>
study of mechanical properties has shown that the nano<br>
graphene filler to look at compressive strength is more<br>
than the compressive strength of nano-silica. The relative<br>
roughness of the RMS indicates that the surface of the<br>
formed, crystallized and super smooth solids is as<br>
indicated in the Atomic Force Microscopy (AFM).
ER  -