13 January 2021 : Clinical Research
Analysis of Root Canal Curvature and Root Canal Morphology of Maxillary Posterior Teeth in Guizhou, China
Xin Qiao123CDEF, Tingting Xu4BC, Liang Chen123D, Deqin Yang123AG*DOI: 10.12659/MSM.928758
Med Sci Monit 2021; 27:e928758
Table 3 Distribution of main root canal configuration of 200 maxillary posterior teeth (n %).
| Tooth position | Number | Type I (n %) | Type II (n %) | Type III (n %) | Type IV (n %) | Type V (n %) | Type VI (n %) | Type VII (n %) | Type VIII (n %) |
|---|---|---|---|---|---|---|---|---|---|
| First premolar | 50 | 6 (12%) | 13 (26%) | 4 (6%) | 22 (44%) | 3 (6%) | 1 (2%) | 1 (2%) | 0 (0%) |
| Second premolar | 50 | 22 (44%) | 14 (28%) | 0 (0%) | 11 (22%) | 2 (4%) | 1 (2%) | 0 (0%) | 0 (0%) |
| MB root of the First molar | 50 | 14 (28%) | 6 (12%) | 5 (10%) | 16 (32%) | 7 (14%) | 2 (4%) | 0 (0%) | 0 (0%) |
| MB root of the Second molar | 50 | 24 (48%) | 5 (10%) | 7 (14%) | 9 (18%) | 2 (4%) | 2 (4%) | 0 (0%) | 1 (2%) |