ABSTRACT

The Compressive strength of the restorative materials determines its longevity against masticatory forces. The aim of this study was to compare the compressive strengths of three conventional glass ionomer cements using a Universal testing machine. Three groups of commercially available brands of Glass Ionomer restorative materials were used in this study: (10 samples in each group). Experimental glass ionomer cement (GIC) specimens fabricated using customized cylindrical moulds of dimension 6±1mm (height) × 4±1mm (diameter) were tested for evaluation of compressive strength using Universal Testing Machine (UTM). This was connected to a load measuring cell, which continuously recorded the load applied to the samples at a crosshead speed of 0.75 ± 0.25 mm per 1 minute till the samples fractured. The samples were statistically analysed using Kolmogorov Smirnov test, One-way ANOVA, and Tukey’s post hoc HSD. The results of the study showed that KetacTM Universal had the highest compressive strength among all the groups tested; Ionofil Molar had the second highest value, and the least value of compressive strength was seen with Fuji IX Extra. A good insight into material endurance was given, but the absolute values of the mechanical properties recorded must be interpreted with respect to the experimental conditions. Keywords: Compressive strength, KetacTM Universal, Fuji IX Extra, Ionofil molar, GIC
Publication date: 01/01/2023

https://ijbpas.com/pdf/2023/January/MS_IJBPAS_2023_6725.pdf

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https://doi.org/10.31032/IJBPAS/2023/12.1.6725