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. 2019 Jan 14;19:14. doi: 10.1186/s12903-019-0710-z

Table 1.

Root anatomy and root canal morphology of maxillary teeth based on Vertucci’s classification

Maxillary teeth Number of roots Root Type Vertucci’s classification
Type I Type II Type III Type IV Type V Type VI Type VII Type VIII
Central Incisor (n = 347) 1 347 (100.0%)
Lateral Incisor (n = 362) 1 362 (100.0%)
Canine (n = 404) 1 404 (100.0%)
First Premolar (n = 304) 1 (n = 206) 35 (17.0%) 49 (23.8%) 32 (15.5%) 46 (22.3%) 11 (5.3%) 28 (13.6%) 5 (2.4%)
2 (n = 97) Buccal 97 (100.0%)
Palatal 97 (100.0%)
3 (n = 1) Mesial 1 (100.0%)
Distal 1 (100.0%)
Palatal 1 (100.0%)
Second Premolar (n = 333) 1 (n = 306) 178 (58.2%) 60 (19.6%) 31 (10.1%) 6 (2.0%) 20 (6.5%) 10 (3.3%) 1 (0.3%)
2 (n = 27) Buccal 26 (96.3%) 1 (3.7%)
Palatal 26 (96.3%)
First Molar (n = 344) 2 (n = 1) Buccal 1 (100.0%)
Palatal 1 (100.0%)
3 (n = 343) Mesiobuccal 219 (63.8%) 15 (4.4%) 5 (1.5%) 99 (28.9%) 5 (1.5%)
Distobuccal 343 (100.0%)
Palatal 340 (99.1%) 3 (0.9%)
Second Molar (n = 354) 1 (n = 10) 4 (40.0%) 2 (20.0%) 4 (40.0%)
2 (n = 32) Buccal 25 (78.1%) 4 (12.5%) 3 (9.4%)
Palatal 30 (93.8%) 2 (6.2%)
3 (n = 312) Mesiobuccal 282 (90.4%) 6 (1.9%) 24 (7.7%)
Distobuccal 312 (100.0%)
Palatal 312 (100.0%)