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Merck Manual
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Tooth Eruption Times

Tooth Eruption Times

Teeth

Number

Age at Eruption*

Baby (Deciduous) Teeth (20 Total)

Lower front teeth (lower central incisors)

2

5–9 months

Upper front teeth (upper central incisors)

2

8–12 months

Upper side teeth (upper lateral incisors)

2

10–12 months

Lower side teeth (lower lateral incisors)

2

12–15 months

First back teeth (first molars)

4

10–16 months

Eye teeth or cuspids (canines)

4

16–20 months

Second back teeth (second molars)

4

20–30 months

Adult (Permanent) Teeth (32 Total)

First back teeth (first molars)

4

5–7 years

Front teeth (incisors)

8

6–8 years

Bicuspids (premolars)

8

9–12 years

Eye teeth or cuspids (canines)

4

10–13 years

Second back teeth (second molars)

4

11–13 years

Wisdom teeth (third molars)

4

17–25 years

*Varies greatly.

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