From: The morphology of maxillary first and second molars analyzed by cone-beam computed tomography in a polish population
MB2 canal in maxillary second molar teeth
Age (Y)
Total
20–30
31–40
n
Percent
MB2 present
9
18,0
39
68,4
48
MB2 absent
41
82,0
18
31,6
59
50
100,0
57
107