勤刷牙,保持牙齿完整无缺,可有效维持心血管系统的健康。美国一项以42000名40岁以上成年人为对象的调查表明,全口牙齿保持完好者的心脏病发病率为4.7%,失去1颗～5颗牙齿者的发病率为5.7%,失去6颗～31颗牙齿者的发病率为7.5%,没有一颗牙齿者的发病率为8.5%。专家指出,对于担心心 Brushing teeth frequently to maintain intact teeth can effectively maintain the health of the cardiovascular system. A survey of 42,000 adults over the age of 40 in the United States showed that the incidence of heart disease with intact teeth intact was 4.7%, the incidence of loss of one to five teeth was 5.7% and the loss of six ~ The incidence of 31 teeth was 7.5%, the incidence of one tooth is 8.5%. Experts point out that for fear of heart