Skip to main content

Table 1 Number and frequency of roots 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

Sex 1 root (%) 2 roots (%) 3 roots (%) Additional (%) Kappa value P value
Female (469) 344 (73.3%) 125 (26.7%) 1.2372 0.2660
Male (431) 330 (76.6%) 100 (23.2%) 1 (0.2%)
Total (900) 674 (74.9%) 225 (25.0%) 1 (0.1%)