From: The morphology of maxillary first and second molars analyzed by cone-beam computed tomography in a polish population
MB2 canal in maxillary first molar teeth
Age (Y)
Total
21–30
31–40
n
Percent
MB2 present
28
58,3
82
59,9
110
MB2 absent
20
41,7
55
40,1
75
48
100,0
137
185