Human Dentition: Number & Types of Teeth in Adults & Children
Adult (Permanent) Dentition – 32 Teeth
| Type | Count | Function | Eruption |
|---|---|---|---|
| Central Incisors | 4 | Cutting | 6–8 yr |
| Lateral Incisors | 4 | Cutting | 7–9 yr |
| Canines (Cuspids) | 4 | Tearing | 9–12 yr |
| First Premolars | 4 | Crushing | 10–12 yr |
| Second Premolars | 4 | Crushing | 10–13 yr |
| First Molars | 4 | Grinding | 6–7 yr |
| Second Molars | 4 | Grinding | 11–13 yr |
| Third Molars (Wisdom) | 4 | Grinding | 17–25 yr (variable) |
| Type | Count | Eruption | Exfoliation |
|---|---|---|---|
| Central Incisors | 4 | 6–12 mo | 6–7 yr |
| Lateral Incisors | 4 | 9–16 mo | 7–8 yr |
| Canines | 4 | 16–23 mo | 9–12 yr |
| First Molars | 4 | 13–19 mo | 9–11 yr |
| Second Molars | 4 | 23–33 mo | 10–12 yr |