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 birth. Gums should be cleaned after each feeding. You can begin brushing your child's teeth as soon as they appear. Permanent teeth begin appearing around age 6, starting with the first molars and lower central incisors. This process continues until approximately age 21.

Most adults have 28 permanent teeth, or up to 32 including the third molars (or wisdom teeth). We usually recommend that a child’s first dental visit to the dentist occur by age 3. If you notice anything unusual (i.e. strange color, stain, delayed development, blistering of the gums) seek treatment earlier than 3.