The teething process Teething refers to the phase when your baby gets the firstset of teeth during infancy or early childhood. Erupted through the gums, the firstset of teeth is known as primary teeth or milky teeth. Teething usually begins when your baby is around 6 months of age. The age at whichan infant begins to get teeth may vary and teething may begin in some infants asyoung as 3 months. In some rare cases, a few...