Abstract
Abstract Objective This study aims to examine the antibacterial effect of saga leaf extract on Enterococcus faecalis bacteria, which causes root canal treatment failure. Materials and Methods This research was conducted using a laboratory experimental method with saga leaf extract at 3.125, 6.25, 12.5, 25, 50, and 100% concentrations. Two percent chlorhexidine acts as the positive control, and 100% dimethyl sulfoxide as the negative control. The diameter of the inhibition zones was measured using the well diffusion test method. Statistical Analysis Data from the measurement of inhibition zone diameter were obtained and tested statistically using the normality test (Shapiro–Wilk), homogeneity test (Levene), parametric test (one-way analysis of variance), and further test (post hoc test). Results The largest inhibition zone diameter observed in this study was 9.46 mm at 100% concentration; however, it was not bigger than the positive control, which was measured at 16.55 mm. The research data were analyzed based on the classification of Davis and Stout inhibition zones. Conclusion This study concludes that saga leaf extract has an antibacterial effect on the growth of E. faecalis bacteria.
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