龋齿俗称“虫牙”,实际上并没有虫子,它是牙齿在内外因素影响下,硬组织逐渐发生破坏和崩解的一种疾病。患龋齿的牙齿称为龋齿。国际卫生组织把龋齿列为继心脑血管疾病和癌症之后重点防治的第三位疾病。龋齿发病初期不易引起主观症状,因此,一旦发现,往往已发展得比较严重,究其发病原因主要有三点: (一)细菌因素。口齿不洁易使细菌滞留于齿面,牙菌斑就是附着于牙面的一种软而粘的不易被清除的物质,它是细 Caries commonly known as “insects”, in fact, no worms, it is the tooth under the influence of internal and external factors, the gradual destruction of hard tissue and a disintegration of a disease. Teeth suffering from dental caries called dental caries. WHO ranks dental caries as the third most prevalent disease after cardiovascular disease and cancer. Caries early onset is not easy to cause subjective symptoms, therefore, once found, tend to have developed more serious, there are three main causes of its pathogenesis: (A) bacterial factors. Tooth dirty easy to make bacteria remain in the tooth surface, plaque is attached to the tooth surface of a soft and sticky not easy to remove substances, it is thin