Table 4.
Classification of mandibular third molar based on the Pell and Gregory and the Winter’s criteria
| Classification | Number | % |
|---|---|---|
| Inclination of the longitudinal axis of the molar | ||
| Distoangular | 8 | 30.8 |
| Horizontal | 8 | 30.8 |
| Mesioangular | 5 | 19.2 |
| Vertical | 3 | 11.5 |
| Inverted | 1 | 3.8 |
| Linguoangular | 1 | 3.8 |
| Buccoangular | 0 | 0 |
| Depth (with respect to occlusal plane) | ||
| Position A | 7 | 26.9 |
| Position B | 18 | 69.2 |
| Position C | 1 | 3.8 |
| Available space (with respect to ascending mandibular ramus) | ||
| Class I | 6 | 23.1 |
| Class II | 16 | 61.5 |
| Class III | 4 | 15.4 |
| IA | 1 | 3.8 |
| IIA | 6 | 23.1 |
| IIIA | 0 | 0 |
| IB | 5 | 19.2 |
| IIB | 9 | 34.6 |
| IIIB | 4 | 15.4 |
| IC | 0 | 0 |
| IIC | 1 | 3.8 |
| IIIC | 0 | 0 |
The twenty six cases evaluated by orthopantomography were divided according to the Winter’s classification and the Pell and Gregory classification