Previous research has shown the drink to be useful in the prevention of other mouth diseases such as caries and periodontal disease, which are also risk factors for oral cancer.

• 之前的研究已经证明，绿茶对防治其它口腔疾病确实有用，如龋齿、牙周病等，而这些口腔疾病也是导致口腔癌的危险诱因。