日本爱知县癌症中心研究所最近的一项研究结果显示,每天刷牙两次以上有助于预防口腔癌和食道癌。研究人员询问在该中心就诊的961名头面口颈癌或食道癌患者,以及2883名健康人,有无刷牙、吸烟、饮酒习惯。被调查者年龄20~79岁,平均61岁。分析结果显示,每天刷牙两次以上的人,患口腔或食道癌的危险比只刷一次牙的人低29%;完全不刷牙的人,患口 A recent study by the Aichi Prefecture Cancer Center Research Institute in Japan showed that brushing twice a day or more can help prevent oral cancer and esophageal cancer. The researchers asked about 961 patients with head and neck cancer or esophageal cancer at the center, and 2883 healthy people with brushing, smoking, and drinking habits. The respondents were 20 to 79 years old, with an average age of 61 years. The results of the analysis show that people who brush their teeth twice or more a day have a 29% lower risk of suffering from oral or esophageal cancer than those who only brush their teeth once; those who do not brush their teeth at all are affected.