The Utilization of Eggshell as Reinforcing Material of Heat Cured Acrylic Resin Denture Base

Heat-cured acrylic resin is easily fractured and can be prevented by adding reinforcing materials of duck eggshell powder. Furthermore, it used as a biocompatible material due to the high content CaCO3. This study aims determine effect 2.5% 5% eggshells reinforcement for denture base with heat-cured on transverse strength. The method an laboratory experiments post-test only control design conducted January 2022. samples were made agent powder’s weight in mould sized 65 x 10 2.5 ± 0.5 mm 11 each group. curing process was executed at temperature 70°C 90 minutes before increasing 100°C 30 minutes, strength measured using Universal Testing Machine. sample tested univariate analysis results average group 66.59 1.88 MPa, after 72.61 3.05 MPa 86.14 4.09. one-way ANOVA LSD tests showed significant p-value = 0.001 (p < 0.05) <0.05). highest value found group, followed 2.5%, lastly,