Table 3 The frequency distribution and percentage of the number of roots and root canals according to sex in the mandibular first molars
| Â | Number of roots | Number of root canals | ||||||
|---|---|---|---|---|---|---|---|---|
Two roots | Three roots | Â | Two root canals | Three root canals | Four root canals | Five root canals | Â | |
Male (n/%) | 345 (72.8%) | 129 (27.2%) | 474 (100.0%) | 6 (1.3%) | 256 (54.0%) | 210 (44.3%) | 2 (0.4%) | 474 (100.0%) |
Female (n/%) | 549 (78.4%) | 151 (21.6%) | 700 (100.0%) | 47 (6.7%) | 407 (58.1%) | 240 (34.3%) | 6 (0.9%) | 700 (100.0%) |
| Â | 894 (76.1%)* | 280 (23.9%)* | 1174 (100.0%) | 53 (4.5%)* | 663 (56.5%) | 450 (38.3%)* | 8 (0.7%) | 1174 (100.0%) |