Babies usually start teething around 6 months of age and it is normal for the first milk teeth to come in before the age of 1 year. If the mother-to-be pays attention to balanced nutrition during pregnancy and does not suffer from calcium deficiency, high blood sugar, high blood pressure, trauma or infection, there will generally be no major problems with the development of the baby’s milk teeth. While the baby is still in the mother’s womb, the milk teeth already start to grow, develop and calcify, and the crown is basically developed within one year of birth. If the baby’s overall growth and development is normal and there is no sign of calcium deficiency after the pediatrician’s assessment, there is no need to take calcium supplements for teething alone. If the baby has a calcium deficiency or even rickets, it is recommended to take a reasonable calcium supplement under the guidance of a pediatrician.