From: The morphology of maxillary first and second molars analyzed by cone-beam computed tomography in a polish population
Number of root canals
Maxillary first molar
Maxillary second molar
n
Percent
C-shaped canal
–
4
1,9
1
2
1,0
40,5
8
3,9
3
75
59,5
145
70,0
110
48
23,2
5
100,0
Total
185
207