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你对牙龄知多少?人的一生有二副牙齿:一副是乳牙(俗称奶牙),一副是恒牙。乳牙从出生后6、7个月开始萌生,至2岁左右全部萌出,其数目为20颗。大约在6岁左右更换恒牙,至12岁左右替换完毕。补钙能健牙吗?牙齿及颌骨在生长发育过程中,需要大量的 VitD 及钙磷元素。由于全身疾病、营养障碍等原因导致 VitD 及钙盐的缺乏会引起牙齿釉质发育不全,好发龋齿。因此,在儿童生长发育期应多喝牛奶,保证 VitD 及钙的需求。
How much do you know about the age of the teeth? There are two pairs of teeth in one's life: one is the deciduous teeth (commonly known as the baby teeth) and the other is the permanent teeth. Deciduous teeth from 6,7 months after birth initiation, to 2 years old all eruption, the number of 20. Replace the permanent teeth about 6 years old, to 12 years old replacement is completed. Calcium can be healthy teeth? Teeth and jaw in the process of growth and development, require a large number of VitD and calcium and phosphorus elements. Due to systemic diseases, nutritional disorders and other causes lead to lack of VitD and calcium salts can cause tooth enamel hypoplasia, prone to dental caries. Therefore, in the growth and development of children should drink more milk, to ensure the demand for VitD and calcium.