龋齿的发生不是虫子蛀成的。那么,坚硬的牙齿为什么会出现空洞呢?牙齿坚硬组织的主要成分是钙、镁、磷等矿物质,遇酸能溶解。口腔中的细菌遇到糖类便形成一种酸,溶蚀牙齿,形成缺损,这就是龋齿发生的原因。预防龋齿除注意口腔卫生外,饮茶是一种天然有效的方法。临床观察发现,凡有饮茶习惯的人较少发生龋齿,这是 Dental caries are not worm-eaten. So, why hard teeth appear hollow it? The main component of hard tissue teeth is calcium, magnesium, phosphorus and other minerals, in case of acid can be dissolved. Bacteria in the mouth encounter carbohydrates will form an acid, erosion of teeth, the formation of defects, which is the cause of dental caries. Prevention of dental caries In addition to pay attention to oral hygiene, drinking tea is a natural and effective method. Clinical observation found that those who have the habit of drinking tea less dental caries, which is