There is no definite time for each newborn to teethe, different environment and genes will also affect the time of teething, generally speaking, it is normal to teethe around 6-8 months. Newborns teething first will grow lower front teeth, before teething newborns usually appear drooling, love to bite things, swollen gums, this time to pay attention to maintain oral hygiene. If the newborn is not teething after more than 6 months, it may be due to the baby’s lack of calcium, you can appropriate sun exposure, reduce the amount of formula, try to eat breast milk and so on. If the baby has not grown milk teeth after 10 months, it is recommended to go to the relevant formal hospital as soon as possible to do some formal examination to check the reasons for the lack of teeth, according to the reasons to take the relevant diagnosis and treatment.