Tea has been linked to a group of medicaments –Ayurveda, the ancient Indian system of medicine, known as ‘Rasayanas’ that confer attainment of positive health, resistance to diseases and assured full lifespan of quality living, unlike drugs that cure after disease has struck. It is considered to be one of the most common beverage of the world. Nowadays, tea is becoming the source of interest for research and prevention of oral diseases. Out of various types of tea, Green tea has been extensively studied and has been found to have various beneficial effects. Green tea has received considerable attention because of its numerable scientifically proven health benefits, due to polyphenols Besides polyphenols, green tea contains additional antioxidants such as carotenoids, tocopherols (vitamin E derivatives) and vitamin C. Its extract is considered to be a naturally occurring antimicrobial agent. Green tea being an antimicrobial and an antioxidant has shown inhibition of certain bacteria causing oral diseases. The microorganisms causing oral diseases are the gram positive and gram negative bacteria. This paper elaborates the effect of green tea extract with chlorhexidine on the 3 major oral bacteria namely P.gingivalis, S.mutans and E.faecalis