From: New quantitative classification of the anatomical relationship between impacted third molars and the inferior alveolar nerve
Anatomical relationship
Contact
Non-contact
Total
Percentage (%)
0 ~ 30°
23
21
44
32.1
30° ~ 60°
1
2
3
2.1
60° ~270°
0
270° ~ 300°
0.8
300° ~ 330°
6
29
21.2
330° ~ 360°
54
60
43.8
37
100
137