15/04/2026
Tooth eruption follows a predictable timeline across childhood and adolescence. Baby teeth (primary) emerge between ages 0–3, while permanent teeth replace them from ages 6–12. The final stage is wisdom teeth, which typically erupt between 17–21 years.
Year-by-Year Tooth Eruption Timeline
Primary (Baby) Teeth
• 0–1 year: Central incisors (front teeth) begin to erupt.
• 1–2 years: Lateral incisors, first molars, and canines appear.
• 2–3 years: Second molars erupt, completing the set of 20 baby teeth.
Permanent (Adult) Teeth
• 6–7 years: First permanent molars and lower central incisors.
• 7–9 years: Upper central and lateral incisors.
• 9–11 years: Canines and premolars begin to erupt.
• 11–13 years: Second molars complete most of the permanent set.
• 17–21 years: Wisdom teeth (third molars) may erupt, though sometimes they remain impacted or are removed.
Key Points
• Baby teeth finish erupting by age 3.
• Permanent teeth start around age 6 and continue until early adulthood.
• By age 13, most permanent teeth are in place.
• Wisdom teeth are the last stage, often causing dental issues.
• Genetics and health can influence eruption timing.
