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Effects of green tea and its products on dental caries and periodontal diseases : A review

Mohsen Hormozi


Green tea is a popular health drink routinely consumed by many people. Green tea is derived from the dried leaves of the plant Camellia sinensis. Green tea is usually available in the form of beverage, mouthwash containing extract of green tea, and as a chewing gum. Intake of green tea polyphenols has shown preventive eff ect against cancer and cardiovascular disease in experimental and epidemiologic studies. Green tea with its active chemical ingredients possesses diverse pharmacological properties that include anti-infl ammatory, antioxidant, and antibacterial effects. It has been suggested that green tea promotes periodontal health by reducing infl ammation, preventing bone resorption, and limiting the growth of certain bacteria associated with periodontal diseases. Periodontitis is a chronic disease of the supporting structures of teeth, which can destroy periodontal structures and result in tooth loss. The possible protective properties of green tea on oral health are related to the existence of fl uoride, catechin, and polyphenols in its content. Polyphenols are the most common antioxidants in foodstuff s, which have an important role in the prevention of chronic diseases. Regarding the existing articles about polyphenols, it appears consumption of polyphenol-containing products may be effective in plaque control and prevention of periodontal diseases. Therefore, it is suggested that the results of in vitro studies be assessed by clinical trials. In vitro studies have shown that green tea polyphenols inhibit the growth and cellular adherence of periodontal pathogens, and their production of virulence factors. Green tea products might have an eff ective role in oral health by decreasing the incidence of dental caries and periodontal disease. Measures, which were used in periodontal studies, were more valuable clinically. The evaluation of the eff ect of green tea products on dental caries needs more longitudinal studies. The aim of this study is to review the eff ect of green tea in dental caries and periodontal diseases.


Dental caries; green tea; periodontal disease

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