饭后不宜立即刷牙,尤其是在刚刚吃过酸性食物后,马上刷牙有害牙齿健康。牙齿是由牙冠和牙根组成,牙冠的最外层是牙釉质,它是全身最坚硬的部分,保护着里面的牙本质和牙髓。牙釉质虽然坚硬,但它遇到酸性物质后,其中的钙和磷分子易与酸发生反应而脱矿,这时牙齿会变得松软而脆弱。 Do not brush your teeth immediately after a meal, especially after having eaten acidic foods, immediately brush your teeth harmful to your teeth. The teeth consist of a crown and root. The outermost layer of the crown is enamel, the hardest part of the body that protects the dentin and pulp. Although enamel is hard, it encounters acid substances, in which calcium and phosphorus molecules react easily with the acid and demineralize, when the teeth become soft and weak.