eruption / Teeth
Tooth eruption timing
When a particular tooth usually comes through.
Against a reference
LowerLeftcentral incisor
6 months to 10 months
Usually comes in
- 6 years to 8 years
- Usually falls out
| central incisor | 6 months to 10 months |
|---|---|
| lateral incisor | 10 months to 16 months |
| first molar | 14 months to 18 months |
| canine | 17 months to 23 months |
| second molar | 1y 11m to 2y 7m |
The source table’s eruption age range, retrieved by tooth type and position.
Step by step
Choose primary or permanent, then upper or lower jaw, then the side and the tooth. Left and right are the child’s own — not the side you see facing them, which is the easiest thing to get backwards. Primary teeth have no premolars, so those options do not appear.
What this number cannot tell you
Eruption ranges are wide; a few months either way is inside them. An eruption window is not a shedding deadline — the age a permanent tooth comes through is not the age its baby tooth has to be gone. Nothing here judges early or late, or advises treatment.
An example
A lower central baby incisor usually comes in between 6 and 10 months, and falls out between 6 and 8 years.
Common questions
- Why is there no number?
- There is no figure here that can be given with confidence, so none is given. The normal range for questions like this is wide anyway — a few minutes with a paediatrician or dentist usually settles it.
- What if my child’s age or country is not covered?
- It will say plainly that this age is not covered, rather than borrow figures from another age or another country. How far a standard reaches is set by whoever published it, and stretching it gives a placing that is simply wrong.
Next
The others in the same group.