Pengaruh Penambahan Nanoselulosa Serat Bambu Betung pada Bahan Basis Gigi Tiruan Resin Akrilik Polimerisasi Panas terhadap Kekuatan Transversal

Abstract

Heat cured acrylic resin is the most commonly used material for denture base fabrication. However, this material has the potential to crack or break due to wear and tear. To overcome this, bamboo betung fiber nanocellulose was added as a reinforcing material. This study aims to determine the effect of addiing bamboo betung fiber nanocellulose to the transverse strength on heat cured acrylic resin denture base material. The research design was an experimental laboratory study. The study was conducted on samples of heat cured acrylic resin denture base material without the addition of bamboo betung fiber nanocellulose and with addition of bamboo betung fiber nanocellulose at concentrations of 0.5%, 0.75%, and 1%. A total of 32 samples, with size of samples is 65×10×2.5 mm, were tested using a Universal Testing Machine to determine the transversal strength. Data was analyzed using one-way ANOVA and post hoc LSD (Least Significant Difference) tests. The normally distributed data was analyzed using the One-Way Anova, which showed significant differences in transversal strength with a p-value of 0.0001 (p<0.05), with the highest strength observed in the 0.75% concentration group. Post hoc LSD tests revealed significant differences between the group without the addition of bamboo betung fiber nanocellulose and those with the addition of bamboo betung fiber nanocellulose at concentrations of 0.5%, 0.75% and 1%, between 0.5% concentration and 1% concentration, between 0.75% concentration and 1% concentration with p-value = 0.0001 (p <0.05), and between 0.5% concentration and 0.75% concentration with p-value = 0.003 (p <0.05). The results indicated an increase in transversal strength with the addition of bamboo betung cellulose nanofibers at concentrations of 0.5%, 0.75%, and 1%, with the highest increase at the 0.75% concentration, followed by the 0.5% concentration. It can be concluded that the addition of bamboo betung fiber nanocellulose has an effect on the transversal strength of heat cured acrylic resin denture base material.