Tooth Eruption Timing in Children

Primary Teeth Eruption Timeline

Primary teeth typically begin to erupt at around 6-8 months of age, with the lower central incisors appearing first, followed by a predictable sequence of eruption that continues until approximately 24-30 months of age when all primary teeth have emerged, as reported by the American Academy of Pediatrics 1

Indigenous children may experience primary tooth eruption at earlier ages than other children, which may contribute to earlier colonization by cariogenic bacteria and increased risk of early childhood caries, according to the American Academy of Pediatric Dentistry 1, 2

The American Academy of Pediatric Dentistry (AAPD) recommends that the first oral examination occur within six months of the eruption of the first primary tooth but no later than 12 months of age, with a strength of evidence level not specified 3, 4
The American Academy of Pediatrics recommends initial dental evaluation at 24 months of age, with a strength of evidence level not specified 3, 4
Oral health care should begin with the eruption of the first tooth, including twice-daily brushing with fluoridated toothpaste (rice grain-sized portion for children <36 months), as recommended by the American Dental Association 5, 6

Indigenous children may experience earlier primary tooth eruption compared to other populations 7

The American Academy of Pediatrics recommends starting twice-daily brushing with fluoridated toothpaste as soon as the first tooth appears, and applying fluoride varnish starting with first tooth eruption, then every 3-6 months thereafter 8
The American Academy of Pediatrics suggests that oral health care should begin immediately with the first tooth eruption, and the first dental examination should be scheduled within 6 months of first tooth eruption but no later than 12 months of age 8
For high-risk populations, the concept that "two is too late" is particularly important, as newly erupted teeth are most vulnerable to caries and early colonization by cariogenic bacteria occurs soon after eruption 7, 8