二、小儿常见口腔病 1.龋齿这是牙齿的多发病,世界卫生组织把它列为侵袭人类、目前须防治的第三位疾患。龋齿是牙齿的釉质及其内层牙本质结构受到酸蚀和菌斑侵袭而发生的一种进行性损坏,形成如虫蛀状的黑褐色孔洞。在牙的咬(牙合)面沟窝不平处,或两牙之间的邻面, Second, children with common oral disease 1. Dental caries This is the frequent occurrence of teeth, the World Health Organization lists it as a human invasion, the third disease to be controlled. Dental caries is a progressive damage to the enamel and the inner dentin structure of the tooth that is subject to acid and plaque attacks, forming dark brown holes like worm-moth-like. In the teeth of the bite (occlusal) surface ditch uneven, or between the two teeth of the adjacent surface,