COMPARATIVE STUDY OF ACTIVITY OF GREEN TEA AND CHLOROHEXIDINE GLUCONATE MOUTHWASH ON STREPTOCOCCUS MUTANS – AN IN-VITRO STUDYPREETHI PAVITHRA AND ASHA RAMESHAbstract Nowadays green tea is commercially available and it is known to possess antibacterial and antioxidant activities. Even though chlorhexidine is the gold standard mouthwash, the use of green tea has been recommended for patients as a prophylactic measure who are susceptible to dental caries. So, the aim of this in vitro study was to evaluate the antibacterial activity of the green tea compared with chlorohexidine gluconate mouthwash as a standard against Streptococcus mutans. Green tea, chlorohexidine mouthwashes were used for comparative study and saline was used as a control to record the baseline value. McFarland standard was used to match the turbidity of bacterial suspension. Brain Heart infusion media was used for culture and subculture of bacteria. The results of the study indicate that green tea catechin mouthwash showed significant reduction in the bacterial colonies but it did not have a considerable antibacterial effect when compared with chlorhexidine gluconate. Green tea catechin mouthwash did not show comparable results to chlorhexidine in bacterial reduction but owing to its better taste and no known side-effects, it can be used regularly to have a check on the caries activity in susceptible individuals.Hence regular usage of green tea can reduce the activity of Streptococcus mutans found in saliva and eventually it can reduce the plaque and caries in saliva without any adverse effect.
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