18 August 2020: Clinical Research
Root Anatomy and Root Canal Morphology of Maxillary Second Permanent Molars in a Chongqing Population: A Cone-Beam Computed Tomography Study
Yu Xia 123CDEF , Xin Qiao 123BC , Ya-jing Huang 123CD , Yue-heng Li 123AE* , Zhi Zhou 123AGDOI: 10.12659/MSM.922794
Med Sci Monit 2020; 26:e922794
Table 4 Root canal configurations of mesiobuccal roots.
| Number of roots | Left side (n/%) | Right side (n/%) | Fisher value | P | Male (n/%) | Female (n/%) | Fisher value | P | Total (n/%) |
|---|---|---|---|---|---|---|---|---|---|
| Type I (1-1) | 146 (73.00%) | 151 (75.50%) | 1.796 | 0.624 | 118 (68.60%) | 179 (78.50%) | 5.853 | 0.119 | 297 (74.25%) |
| Type II (2-1) | 13 (6.50%) | 16 (8.00%) | 15 (8.72%) | 14 (6.14%) | 29 (7.25%) | ||||
| Type III (1-2-1) | 4 (2.00%) | 5 (2.50%) | 6 (3.49%) | 3 (1.32%) | 9 (2.25%) | ||||
| Type IV (2-2) | 37 (18.00%) | 28 (14.00%) | 33 (19.19%) | 32 (14.04%) | 65 (16.25%) | ||||
| Total | 200 (100%) | 200 (100%) | – | – | 172 (100%) | 228 (100%) | – | – | 400 (100%) |