From: Radiographic study of the distribution of maxillary intraosseous vascular canal in Koreans
CH
<11
<13
<15
<17
<19
<21
21≤
Sum
N (number)
2
9
17
31
18
6
92
N (%)
2.2
9.8
18.5
33.7
19.6
6.4
100