When Do Children Lose Their Bottom Molars? Primary Tooth Exfoliation Timeline
Primary (baby) second molars are the last to exfoliate, typically between ages 10–12.
Primary Dentition Exfoliation Sequence (Approx.)
| Tooth | Age Range |
|---|
| Central incisors (lower then upper) | 6–7 years |
| Lateral incisors | 7–8 years |
| First molars | 9–11 years |
| Canines | 9–12 years |
| Second molars | 10–12 years |
Individual Variation
- Girls slightly earlier than boys.
- Genetics, nutrition, premature birth, systemic disease affect timing.
- Delayed >1 year past average → dental evaluation (radiograph for impaction, agenesis).
Permanent Successors
- Second premolars replace primary second molars.
- Eruption: 10–12 years (mandibular slightly before maxillary).
Parental Tips
- Encourage gentle wiggling of loose teeth.
- Maintain oral hygiene; avoid premature extraction.
- Space maintainer if primary molar lost early (prevents drift).
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