Compressive and Diametral Tensile Strength of Dental Stones with SiO2 and Al2O3 Nanoparticles
Journal Title: International Journal of Medical Science and Innovative Research (IJMSIR) - Year 2018, Vol 3, Issue 10
Abstract
It was investigated the effect of SiO2 and Al2O3nanoparticles on mechanical properties of Type III andType IV dental stones. A total of 200 disc-shaped specimens in 3 mm diameter and 6 mm height for compressive testsand specimens in 6mm diameter and 3mm height for diametral tensile tests were prepared (n=10) (Control, %1 SiO2, % 5 SiO2, %1 Al2O3, %5 Al2O3). Before mechanical tests, specimens were kept in dry condition for 7 days. Compressive and diametral tensile tests were performed in an universal test machine .The data were statistically analyzed using ANOVA and Tukey’s HSD test. The interaction between nanoparticles and type of dental stone was found to be significantly important (p<0.05). The lowest diametral strength was observed in 5% SiO2 nanoparticleadded Type IV dental stone.The lowest compressive strength was observed in 5% SiO2 nanoparticle added Type III dental stone.For both dental stones the compresive and diametral strength values decreased by adding SiO2and Al2O3 nanoparticles.Thediametral and compressive tensile strength values decreased as increasing %wt ofSiO2 and Al2O3 nanoparticlesfor both dental stone and improved dental stone. The incorporation of %1-%5 SiO2 and Al2O3 nanoparticles to Type III and Type IV dental stones decreased the diametral and compressive strength.As the %wt ofSiO2 and Al2O3 nanoparticlesincreased,the compressive and diametral tensile strength of both dental stone and improved dental stone decreased.
Authors and Affiliations
Dr. Necla Demir
Keywords
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