Tooth Development

The following tables chart average ages in which primary and permanent teeth erupt. Please keep in mind that these are only average ranges.

Upper Primary (Baby) Teeth	Lower Primary (Baby) Teeth
Central Incisor 8-12 months	Central Incisor 6-10 months
Lateral Incisor 9-13 months	Lateral Incisor 10-16 months
Cuspids 16-22 months	Cuspids 17-23 months
First Molar 13-19 months	First Molar 14-18 months
Second Molar 25-33 months	Second Molar 23-31 months

Permanent Upper Teeth	Permanent Lower Teeth
Central Incisor 7-8 years	Central Incisor 6-7 years
Lateral Incisor 8-9 years	Lateral Incisor 7-8 years
Cuspids 11-12 years	Cuspids 9-10 years
First Bicuspids 10-11 years	First Bicuspids 10-12 years
Second Bicuspids 10-12 years	Second Bicuspids 11-12 years
First Molars 6-7 years	First Molars 6-7 years
Second Molars 12-13 years	Second Molars 11-13 years
Third Molars 17-21 years	Third Molars 17-21 years