Uji Pengaruh Saliva Buatan Terhadap Kekuatan Tekan Semen Ionomer Kaca Tipe Ii Yang Direndam Dalam Minuman Isotonik

Abstract

The immersion of GIC type II in acid drink like isotonic drink could reduce the compressive strength (CS) of GIC type II. This is due to the matrix degradation process of GIC in acid condition. But on the other hand, there is artificial saliva that can neutralize this condition. Purpose: Purpose of this study was to evaluate the effect of artificial saliva on compressive strength of GIC type II immersed in isotonic drink. Method: The GIC specimens of 6mm x 6mm x 12mm (length x width x depth) were immersed for 24 hours in water, 24 hours in isotonic drink, 24 hours in isotonic drink and continue with 72 hours in artificial saliva, 48 hours in isotonic drink, and 48 hours in isotonic drink and continue with 144 hours in artificial saliva. The compressive strength was determined using Universal Testing Machine with a crosshead speed of 0.5 mm/min. Statistical analysis was performed by one-way ANOVA and post-hoc LSD test ( = 0.05). Result: Statistic test shows significant difference of CS (p<0,05). Conclusion: conclusion of this study artificial saliva gives effect to the rising of the compressive strength of GIC type II immersed in isotonic drink. Keywords: Isotonic drink, artificial saliva, compressive strength, Glass Ionomer Cement type II. Abstrak: Perendaman SIK tipe II dalam minuman asam seperti minuman isotonik dapat mengurangi kekuatan tekan SIK tipe II. Hal ini disebabkan proses degradasi matriks SIK pada kondisi asam. Namun di sisi lain, saliva buatan yang dapat menetralkan kondisi ini. Tujuan: untuk untuk mengetahui pengaruh saliva buatan terhadap kekuatan tekan SIK yang direndam dalam minuman isotonik. Metode: Spesimen SIK tipe II berukuran 6mm x 6mm x 12 mm (panjang x lebar x tinggi) direndam selama 24 jam dalam air, 24 jam di dalam minuman isotonik, 24 jam di dalam minuman isotonik dan lanjutkan dengan 72 jam pada saliva buatan, 48 jam di minuman isotonik, dan 48 jam di minum isotonik dan lanjutkan dengan 144 jam dalam saliva buatan. Kekuatan tekan diukur menggunakan Universal Testing Machine dengan kecepatan 0,5 mm / min. Analisis statistik dilakukan dengan one-way ANOVA dan post-hoc uji LSD ( = 0,05). Hasil: Uji statistik menunjukkan perbedaan yang signifikan dari kekuatan tekan (p <0,05). Simpulan: terdapat pengaruh saliva buatan terhadap kekuatan tekan SIK tipe II yang direndam dalam minuman isotonik. Kata kunci: minuman isotonik, saliva buatan, kekuatan tekan, Semen Ionomer Kaca tipe II.

Effect of Water-Settable Gic Immersion in River Water and Pdam Water on Diametral Tensile Strength

“…3 The results showed that the pH of each solution was 2.9 for river water, 7.5 for PDAM water, and 7 for sterile distilled water. This is in accordance with the theory of Fitriyana et al (2014) which states that materials exposed to an acidic pH will experience a higher decrease in mechanical properties, thus causing the value of the diametral tensile strength of the water settable GIC sample group immersed in river water to have the lowest value compared to with other sample groups. 14 Based on this research, it can be concluded that there is an effect of immersion in water settable GIC in river water and PDAM water on diametric tensile strength.…”

“…In Fitriyana's (2014) study, it was stated that GIC suffered more morphological damage when it was in the oral cavity which had an acidic pH compared to those that only had contact with saliva. 14 The value of the diametrical tensile strength in the water settable GIC sample group immersed in PDAM water has a higher average value than the water settable GIC sample group immersed in river water and has a lower average value than the conventional GIC sample group immersed in aquadest which is equal to 8.42MPa. This is consistent with the research of Nadia et al, which states that PDAM water is not acidic, because filtration and coagulation has been carried out to neutralize the pH of the water.…”

“…This is in accordance with the research of Permatasari et al (2016) which states that the restoration material immersed in sterile distilled water does not experience significant changes in mechanical properties. 14 The results of research by Feng et al (2018) stated in their research that the restoration material by immersing in sterile water for six months did not show significant changes in mechanical properties. In Fitriyana's (2014) study, it was stated that GIC suffered more morphological damage when it was in the oral cavity which had an acidic pH compared to those that only had contact with saliva.…”

“…This is in accordance with the research of Permatasari et al (2016) which states that restoration after immersion in river water experiences a higher degradation than sterile aquadest. 14 Research by Cender (2018) reveals that the degradation of restorative materials is due to exposure to acidic solutions, while restorative materials exposed to sterile water do not change significantly in mechanical properties. 14 This is supported by research by Singh et al (2012) which states that the restorative materials exposed to acid solutions experience a significant reduction in mechanical properties compared to restorations exposed to distilled water.…”

“…14 Research by Cender (2018) reveals that the degradation of restorative materials is due to exposure to acidic solutions, while restorative materials exposed to sterile water do not change significantly in mechanical properties. 14 This is supported by research by Singh et al (2012) which states that the restorative materials exposed to acid solutions experience a significant reduction in mechanical properties compared to restorations exposed to distilled water. 11 In this study, there was no significant difference between the water settable GIC sample group immersed in PDAM water and the conventional GIC sample group immersed in distilled water because the pH of the PDAM water was close to neutral so it did not experience a significant decrease.…”