Usually 1-week-old babies will have 6 to 10 teeth, but the exact number is not clear. Usually baby’s milk teeth start to erupt at 4~10 months after birth, and over time, 1-week-old babies will grow 6~10 teeth. Usually, the number of teeth erupting in 1-year-old babies is related to nutrition, genetics and other factors. Babies with adequate nutritional intake and early eruption of milk teeth in the family can usually erupt 6 to 10 teeth at around 1 year of age. For a small number of babies who do not have sufficient nutritional intake and whose family teeth erupt late, 6 to 8 teeth may erupt at this age. Teething is a physiological phenomenon, teething individual children may have a low fever, increased saliva, salivation and sleep disturbance, irritability and other symptoms, parents do not need to worry too much. During the period of teething, parents should ensure a balanced intake of nutrients, as far as possible to warm and cool suitable, soft food. If your baby is experiencing abnormalities during teething, you should seek medical attention to prevent the condition from worsening.