Eruption Of Your Child’s Teeth
Children’s teeth begin forming before birth in the second trimester. As early as 4 months old, your child’s first primary (baby) teeth begin to erupt through the gums. The first teeth generally seen are the lower central incisors, followed closely by the upper central incisors. All 20 primary teeth usually appear by age 3, although the pace and order of eruption vary.
Permanent teeth begin appearing around age 6, starting with the first molars and lower central incisors. This process continues until approximately age 21.