有个小朋友考了99分,为那宝贵的1分,哭了。那1分丢在哪里?原来,他竟然在考卷上把我大名鼎鼎的虫牙,解释为牙齿里有虫子。我虫牙里怎么会有虫子呢?呵呵,我为什么叫虫牙呢?是因为有的小朋友在咀嚼食物后,没有及时刷牙漱口,食物残渣在细菌的作用下发酵,产生酸性物质,侵蚀牙齿,使牙齿脱钙、软化,慢慢形成空洞,仿佛虫子咬过一样,所以叫虫牙,也叫龋齿。 There is a child exam 99 points, for that precious 1 minute, cried. Where did that 1 point go? Originally, he actually put my famous pest on the test paper and explained that there are bugs in his teeth. Oh, why do I call insects? Because some children chew food, there is no timely brushing mouthwash, food residue under the action of bacteria in the fermentation, resulting in acidic substances, erosion of teeth, so that Dental decalcification, softening, slowly forming a cavity, as if the insects bitten the same, so called insects, also known as dental caries.