Influence of black tea on Streptococcus mutans and Lactobacillus levels in saliva in a Saudi cohort

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Abstract

Objectives: Dental caries are associated with high counts of Streptococcus mutans (SM) and Lactobacillus (LB) and low saliva buffering capacity (BC). This study aimed to evaluate the antimicrobial activity of black tea on salivary cariogenic microflora, SM and LB species in an adult population. Antimicrobial activity was measured from the number of colony forming units (CFUs) of SM and LB, and BC of saliva. Methods: In this prospective experimental study, unstimulated saliva samples were acquired from the participants before, immediately after, and 1 h after drinking tea by collecting saliva in sterilised containers. Samples were taken to the laboratory for incubation and subsequent counting. SM and LB counts and BC of saliva were calculated using the caries risk test (CRT). Results: A total of 21 participants, 13 males and 8 females, with a mean age of 32.6 ± 8.02, were recruited in this study. Black tea had no significant effect on reducing the cariogenic bacterial counts (p > 0.05). Conclusion: Based on this study, it can be deduced that black tea exhibits an insignificant antimicrobial effect against Streptococcus mutans and Lactobacillus bacteria.

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APA

Ramadan, A. R. M., Bakeer, H. A., Mahrous, M. S., & Hifnawy, T. M. (2019). Influence of black tea on Streptococcus mutans and Lactobacillus levels in saliva in a Saudi cohort. Journal of Taibah University Medical Sciences, 14(2), 179–186. https://doi.org/10.1016/j.jtumed.2019.02.008

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