Children’s teeth begin forming before birth. As early as 4 months, the first primary, or baby teeth to erupt through the gums are the lower central incisors, followed closely by the upper central incisors. Although all 20 primary teeth usually appear by age 3, the pace and order of their eruption varies.
Oral care should begin soon after baby’s birth. Gums should be cleaned after each feeding. You can begin brushing your child’s teeth as soon as they appear.