Skip to main content

Table 3 Frequency of distribution of root canal configurations in mandibular first molars according to sex

From: Cone-beam computed tomography analysis of root canal morphology in mandibular first molars in a Chinese population: a clinical study

   Type I Type II Type III Type IV Type V Type VI Type VII Type VIII +
Root Sex 1-1 2-1 1-2-1 2-2 1-2 2-1-2 1-2-1-2 3-
Mesial F (469) 23 (4.9%) 69 (14.7%) 2 (0.4%) 357 (76.1%) 9 (1.9%) 1 (0.2%) 8 (1.7%)
M (430) 4 (0.9%) 80 (18.6%) 1 (0.2%) 333 (77.4%) 3 (0.7%) 9 (2.1%)
T (899) 27 (3.0%) 149 (16.6%) 3 (0.3%) 690 (76.8%) 12 (1.3%) 1 (0.1%) 17 (1.9%)
Distal F (344) 260 (75.6%) 26 (7.6%) 4 (1.2%) 30 (8.7%) 24 (7.0%)
M (330) 275 (83.3%) 17 (5.2%) 1 (0.3%) 23 (7.0%) 12 (3.6%) 2 (0.6%)
T (674) 535 (79.4%) 43 (6.4%) 5 (0.7%) 53 (7.9%) 36 (5.3%) 2 (0.3%)
Distobuccal F (125) 123 (98.4%) 2 (1.6%)
M (100) 99 (99%) 1 (1%)
T (225) 222 (98.7%) 3 (1.3%)
Distolingual F (125) 125 (100%)
M (100) 100 (100%)
T (225) 225 (100%)