Pengaruh Desinfeksi Ekstrak Daun Jarak Kepyar (Ricinus communis) 25% Terhadap Zona Hambat Candida albicans dan Kekuatan Impak Basis Gigi Tiruan Resin Akrilik Polimerisasi Panas

Abstract

The heat-polymerized acrylic resin denture base has biological properties that can become a site for the growth of microorganisms such as Candida albicans, as well as mechanical properties, one of which is impact strength. Denture disinfection can be carried out using herbal disinfectants such as castor leaf extract (Ricinus communis). Castor leaves contain chemical compounds that act as antifungal agents, including alkaloids, flavonoids, triterpenoids, tannins, and phenolics, which can reduce the impact strength of denture bases. This study aims to determine the effect of disinfection with 25% castor leaf extract on the inhibition zone of Candida albicans and the impact strength of heat-polymerized acrylic resin denture bases after 1 and 2 years of simulation. This study uses an experimental laboratory design. The research method involves disinfecting denture base samples with 25% castor leaf extract as the treatment group, with 1 year and 2 year simulations. The results were analyzed using univariate tests and T-tests. The average inhibition zone of Candida albicans in the 25% castor leaf extract group for the 1 year simulation was 11.61 ± 0.77 mm and for the 2 year simulation was 12.05 ± 0.67 mm. The average impact strength in the 25% castor leaf extract group for the 1 year simulation was 1284.53 ± 145.73 J/m² and for the 2 year simulation was 1187.34 ± 295.60 J/m². The T-test results showed significance for the 1 year simulation (p = 0.047) and the 2-year simulation (p = 0.001). This indicates that there is an effect of 25% castor leaf extract disinfection on the inhibition zone of Candida albicans in heat-polymerized acrylic resin denture bases. For impact strength, the T-test results for the 1 year simulation (p = 0.449) and 2 year simulation (p = 0.544) showed no significant effect. Therefore, the conclusion is that 25% castor leaf extract has a strong effect on Candida albicans inhibition but does not affect the impact strength of heat-polymerized acrylic resin denture bases after 1 and 2 years of simulation