发育正常的儿童,一般在两岁半左右长完第1套牙齿--乳牙。此时就应该训练儿童刷牙,从小养成良好的口腔卫生习惯。有些家长不太注意这一点,总想等孩子大些才开始学刷牙。曾经有一个三岁的小朋友,满口牙全是黑色的,牙齿基本都烂掉了,原来患儿的妈妈从来都是让孩子含着奶瓶睡觉,很少清洁口腔。 Normal development of children, usually at about two and a half long finished the first set of teeth - deciduous teeth. At this point should train children to brush their teeth, childhood to develop good oral health habits. Some parents do not pay much attention to this point, always want to wait for children bigger before they begin to learn to brush their teeth. There was a three-year-old child, full mouth full of black teeth are basically rotten, the original child’s mother has always been to allow children to sleep with a bottle, rarely clean the mouth.