Pengaruh Penambahan Nanosilika Abu Cangkang Kelapa Sawit pada Bahan Basis Gigi Tiruan Resin Akrilik Polimerisasi Panas Terhadap Penyerapan Air

Abstract

The most commonly used denture base material is heat cure acrylic resin. The disadvantage of this material is that it easily absorbs water. This can be overcome by the addition of palm kernel shell ash nanosilica. The purpose of this study was to determine the effect of the addition of palm kernel shell ash nanosilica at a concentration of 5% and 6% to heat cure acrylic resin denture base material on the water absorption. This research was carried out on samples without and with the addition of palm kernel shell ash nanosilica at concentrations of 5% and 6%. There were 27 samples measuring 50×0.5 mm. The samples were tested by weighing the weight of the material that had been soaked in water using an analytical balance to determine the value of water absorption. Value analysis with univariate test to determine the mean value and standard deviation, one-way ANOVA test to determine the effect, and LSD test to determine significant differences. The results of this study obtained the mean value and standard deviation of the control group of 4.99 ± 1.00 µg/mm3, the 5% concentration group was 3.79 ± 0.94 µg/mm3, and the 6% concentration group was 2.23 ± 1.06 µg/mm3. There is a significant effect with a value of p=0.001. There were significant differences between the control group and the 5% and 6% concentration groups with a value of p=0.019 and p=0,001. From the results, it is known that the denture base materials with addition of palm kernel shell ash nanosilica at a concentration of 6% has the lowest water absorption value.