J Dent Oral Biol | Volume 7, Issue 3 | Research Article | Open Access
Ashu Michael Agbor1*, Kouekam Alida1, Tembe Estella Fokunang3, Pierre Kwete Fotsing2, Charles Ntungwen Fokunang3 and Sudeshni Naidoo4
1Department of Community Oral Health, Université des Montagnes Dental School, Cameroon
2Department of Medical Laboratory Sciences, Université des Montagnes, Cameroon
3Department of Pharmacotoxicology and Pharmacokinetics, University of Yaoundé 1, Cameroon
4Department of Community Oral Health, University of The Western Cape – South Africa
*Correspondance to: Ashu Michael Agbor
Fulltext PDFBackground: Apart from dental caries, periodontal diseases constitute the second major reason for dental consultation. Tea and extracts from tea leaves is the most consumed beverage worldwide but the impact of tea on oral bacteria has not been widely studied. The purpose of the present study was to evaluate the antibacterial activities of Camellia sinensis (tea leaves) on bacteria responsible for periodontal diseases. Methods: This was an in-vitro laboratory study on green and black tea leaves carried out at the laboratory of the Université des Montagnes Teaching Hospital in Cameroon. The leaves were subjected to two extractions techniques: One by maceration in 95% ethanol and the other by infusion in water. Results: The yields obtained were 13.85% and 10.50% ethanolic extracts of the leaves of green tea and black tea respectively and 22.98% and 19.49% for the ethanolic and their aqueous extracts by infusion of green tea and black tea respectively. Phytochemical screening demonstrated the presence of polyphenols such as flavonoids, coumarins, tannins, sennosides, quinones, phenols, as well as alkaloids, terpenoids and cardiac glycosides. The ethanolic extracts showed higher polyphenol contents than the respective aqueous extracts (37.82 and 17.43 mgEqAT/g of extract versus 18.36 and 14.79 mgEqAT/g of extract).Polyphenols were higher in green tea leaves compared to black tea. Extracts from green tea leaves had bactericidal activity on all the strains of the isolated bacteria unlike black tea extracts that had bacteriostatic activity on all strains.
Camellia sinensis, Green tea, black tea, Antibacterial activity, Prevotella intermedia; Fusobacterium nucleatum; Aggregatibacter actinomycetemcomitan, Cameroon
Agbor AM, Alida K, Fokunang TE, Fotsing PK, Fokunang CN, Naidoo S. Tea (Camellia sinensis) Leaves Exhibit Antibacterial Activities on Bacteria Responsible for Periodontal Diseases. J Dent Oral Biol. 2022; 7(3): 1197. ISSN: 2475-5680.