Milk teeth usually start to emerge when a child is about 6 months old and are fully completed after 2.5 to 3 years. However, the timing of the emergence of milk teeth can vary within a 1-year range. Therefore, if a 7-month-old child has not yet grown teeth but is developing normally, parents should not be too worried, as this could simply be a natural delay in teething.

To know which vitamins a 1-year-old, 2-year-old, or 3-year-old child needs, parents must understand the child's needs to provide sufficient essential vitamins and minerals.