From: Evaluation of root and canal morphology of maxillary permanent first molars in an Emirati population; a cone-beam computed tomography study
Mesiobuccal root
Distobuccal root
Palatal root
Single canal configuration
 Type I
104 (19.9%)
512 (98%)
516 (98.8%)
Two canals configuration
 Type II
308 (59%)
10 (2%)
6 (1.2%)
 Type III
30 (5.7%)
–
 Type IV
80 (15.3%)