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 1 Numbers of roots.
Number of roots | Left side (n/%) | Right side (n/%) | χ2 | P | Male (n/%) | Female (n/%) | χ2 | P | Total (n/%) |
---|---|---|---|---|---|---|---|---|---|
One root | 21 (10.50%) | 18 (9.00%) | 0.264 | 0.876 | 15 (8.72%) | 24 (10.52%) | 2.153 | 0.341 | 39 (9.75%) |
Two roots | 24 (12.00%) | 25 (12.50%) | 17 (9.88%) | 32 (14.04%) | 49 (12.25%) | ||||
Three roots | 155 (77.50%) | 157 (78.50%) | 140 (81.40%) | 172 (75.44%) | 312 (78.00%) | ||||
Total | 200 (100%) | 200 (100%) | – | – | 172 (100%) | 228 (100%) | – | – | 400 (100%) |