EFEKTIVITAS ANTIBAKTERI EKSTRAK DAUN TEH HIJAU (CAMELLIA SINENSIS. L) PAGAR ALAM TERHADAP BAKTERI STREPTOCOCCUS MUTANS

BILA, MARISA SALSA and Merdekawati, Listia Eka and Anastasia, Danica (2025) EFEKTIVITAS ANTIBAKTERI EKSTRAK DAUN TEH HIJAU (CAMELLIA SINENSIS. L) PAGAR ALAM TERHADAP BAKTERI STREPTOCOCCUS MUTANS. Undergraduate thesis, Sriwijaya University.

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Abstract

Background: Dental caries remains a prevalent oral health issue in Indonesia, with Streptococcus mutans identified as the main causative agent. While 0.2% chlorhexidine is effective, its side effects highlight the need for natural alternatives. Green tea (Camellia sinensis. L) contains antibacterial compounds like catechins and flavonoids. Objective: To evaluate the antibacterial effectiveness of green tea leaf extract from Pagar Alam against Streptococcus mutans. Methods: This in vitro true experimental study used a post-test only control group design with the disk diffusion method. Samples consisted of green tea extract at concentrations of 5%, 15%, and 25%, and a 0.2% chlorhexidine control. Inhibition zones were measured with a caliper and analyzed using One Way ANOVA and Post Hoc LSD tests. Results: The average inhibition zone diameters were 5.900 mm (5%), 7.908 mm (15%), and 10.033 mm (25%). The positive control showed 16.700 mm. Significant differences were observed among all groups (p<0.05). Conclusion: Green tea leaf extract from Pagar Alam can inhibit significantly the growth of Streptococcus mutans, with increasing antibacterial activity at higher concentrations. The 25% concentration yielded the highest inhibitory effect compared to the other concetrations. However, grean tea leaf extract from Pagar Alam is still not effective as antibacterial compared to CHX 0,2%.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Teh hijau, Camellia sinensis, Streptococcus mutans, antibakteri, zona hambat
Subjects:	R Medicine > RK Dentistry > RK1-715 Dentistry
Divisions:	04-Faculty of Medicine > 12201-Dentistry (S1)
Depositing User:	Marisa Salsa Bila
Date Deposited:	08 Jul 2025 07:45
Last Modified:	08 Jul 2025 07:45
URI:	http://repository.unsri.ac.id/id/eprint/177088

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