Interdental Jurnal Kedokteran Gigi (IJKG)
Vol. 22 No. 2 (2026): Interdental Jurnal Kedokteran Gigi (IJKG)

Antibacterial Activity of Cymbopogon citratus Extract Against Post-Endodontic Bacteria: A Disc Diffusion Study

Rina Permatasari (Department of Conservative Dentistry, Faculty of Dentistry, Universitas Prof. Dr. Moestopo (B), Jakarta, Indonesia)
Nasywa Khabiza Zauhayr (Faculty of Dentistry, Universitas Prof. Dr. Moestopo (B), Jakarta, Indonesia)
Syarla Feonisa Alzena (Faculty of Dentistry, Universitas Prof. Dr. Moestopo (B), Jakarta, Indonesia)



Article Info

Publish Date
12 Aug 2026

Abstract

Introduction: Root canal treatment failure is frequently associated with persistent microbial infection, particularly by Enterococcus faecalis and Staphylococcus aureus. Sodium hypochlorite remains the gold standard irrigant; however, its cytotoxicity has encouraged the exploration of herbal alternatives. Cymbopogon citratus contains bioactive compounds with potential antibacterial properties. Material and Methods: This laboratory experimental study evaluated the antibacterial activity of Cymbopogon citratus extract at concentrations of 10%, 20%, and 30% against E. faecalis ATCC 29212 and S. aureus ATCC 29213 using the disc diffusion method. Sodium hypochlorite 2.5% was used as the positive control and 96% ethanol as the negative control. Data were analyzed using one-way ANOVA followed by Bonferroni post hoc test. Results and Discussion: The highest inhibition zone for E. faecalis was observed at 20% concentration (1.63 ± 0.48 mm), while for S. aureus, the highest value was found at 10% concentration (2.06 ± 1.15 mm). No statistically significant differences were found among extract concentrations (p>0.05), whereas sodium hypochlorite demonstrated significantly higher antibacterial activity (p<0.001). Conclusion: Cymbopogon citratus extract demonstrated weak antibacterial activity and was not comparable to sodium hypochlorite. Its potential as an alternative root canal irrigant requires further optimization and validation.

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Journal Info

Abbrev

interdental

Publisher

Subject

Biochemistry, Genetics & Molecular Biology Dentistry Medicine & Pharmacology Public Health

Description

Interdental Journal is a scientific published and supported by Faculty of Dentistry Universitas Mahasaraswati Denpasar and published Three Times a year. The submission process opens throughout the year. All submitted manuscript will be screened with double-blind peer review and editorial decision ...