Table 4.
The Relationship between the Number of Cusps and the Number of Roots of the Upper and Lower Third Molars
| Cusps | Number of roots | |||
|---|---|---|---|---|
|
| ||||
| One | Two | Three | Four | |
| Three | 3 | 2 | 6 | 1 |
|
| ||||
| Four | 6 | 35 | 24 | 3 |
|
| ||||
| Five | 2 | 40 | 25 | 6 |
|
| ||||
| Six | 0 | 10 | 7 | 2 |
|
| ||||
| Seven | 0 | 3 | 0 | 1 |
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