Primary (Baby) Teeth Development

The initial growth of primary teeth begins during the second trimester of pregnancy (around 16–20 weeks). At this stage, expectant mothers should maintain a nutritious diet to support the development of the infant’s bones and soft tissues.

Though the timing of tooth eruption varies individually, primary teeth generally begin to emerge when the infant is 6–8 months old. By age three, a full set of twenty primary teeth typically appears.

Request an Appointment

The American Academy of Pediatric Dentistry (AAPD) recommends a first “well-baby” dental visit around twelve months of age (or six months after the first tooth emerges). This visit helps familiarize the infant with the dental office, allows monitoring of dental development, and gives parents the chance to ask questions.

Which Teeth Emerge First?

Teeth usually emerge in pairs, starting at the front of the mouth:

  • Lower central incisors: Appear between 6–10 months. Begin flossing as soon as two adjacent teeth emerge.
  • Upper central incisors: Appear between 8–12 months. Teething discomfort can be eased with clean teething rings or cold damp cloths.
  • Upper and lower lateral incisors: Emerge between 9–16 months, adjacent to central incisors. Pediatric dentists recommend ending sippy cup use by 14 months to reduce “baby bottle tooth decay.”
  • Canines (cuspids) and first molars: Emerge between 13–23 months, located next to the lateral incisors on each arch.
  • Second molars: Usually appear last, beginning on the lower arch, completing the full set of twenty primary teeth by about 33 months.

Pediatric dentists often apply dental sealants to molars to protect against trapped food, bacteria, and enamel-eroding acids.

Reducing the Risk of Early Cavities

Primary teeth are important for maintaining space for permanent teeth, supporting proper speech, guiding tongue posture, and aiding chewing. Proper care is essential to prevent early cavities (caries).

Helpful Tips:

  • Brush twice daily: Use a pea-sized amount of ADA-approved non-fluoridated toothpaste for children under two, and fluoridated toothpaste for children over two. Choose a soft-bristled toothbrush suitable for infants.
  • Start flossing: Begin once two adjacent teeth appear. Your pediatric dentist can demonstrate effective techniques.
  • Provide a balanced diet: Limit sugary and starchy snacks that feed cavity-causing bacteria. Offer a variety of nutritious foods for healthy teeth and gums.
  • Set a good example: Children are more likely to brush and floss if they see their parents doing the same. Use age-appropriate books to teach about oral hygiene.
  • Regular dental visits: Biannual visits allow the pediatric dentist to monitor oral development, perform professional cleanings, apply topical fluoride, and coat molars with sealants.

If you have questions or concerns about your child’s tooth development, contact your pediatric dentist for guidance.