Table 5 Vertucci classification of the root canals of the mandibular molars.

From: Root and root canal morphology of mandibular first and second molars in a Jordanian subpopulation: a cross-sectional cone-beam computed tomography study

Tooth

Root

N (%)

Vertucci classification n (%, CI)

I

II

III

IV

VIII

Additional type 3 − 1

36

(n = 78)

M

75 (96.2)

–

49 (65.3, 54.1–75.3)

–

26 (34.7, 24.7–45.9)

–

–

D

78 (100)

62 (79.5, 68.5–87.5)

15 (19.2, 11.9–29.4)

–

1 (1.3, 0.03–7.2)

–

–

MB

3 (3.8)

1 (33.3, 0.8–90.6

1 (33.3, 0.8–90.6)

–

1 (33.3, 0.8–90.6)

–

–

ML

3 (3.8)

3 (100, 29.2–100)

–

–

-

–

–

37

(n = 81)

Single

7 (8.6)

2 (28.6, 5.1–70.9)

3 (42.9, 13.9–77.0)

–

1 (14.3, 0.4–57.9)

1 (14.3, 0.4–57.9)

–

M

70 (86.4)

2 (2.9, 0.4–10.0)

59 (84.3, 74.1–91.5)

–

9 (12.9, 6.9–22.3)

–

–

D

74 (91.4)

71 (95.9, 88.7–99.1)

3 (4.1, 0.9–11.3)

–

–

–

–

MB

4 (4.9)

3 (75, 21.9–98.7)

1 (25, 1.3–78.1)

–

–

–

–

ML

4 (4.9)

4 (100, 39.8–100)

–

–

–

–

–

46

(n = 81)

Single

1 (1.2)

–

–

–

–

1 (100, 2.5–100)

–

M

78 (96.3)

–

55 (70.5, 59.4–79.9)

–

23 (29.5, 20.1–40.6)

–

–

D

80 (98.8)

61 (76.2, 65.5–84.4)

15 (18.8, 11.5–29.1)

1 (1.2, 0.03–6.6)

3 (3.8, 0.8–10.7)

–

–

MB

2 (2.5)

1 (50, 1.3–98.7)

1 (50, 1.3–98.7)

–

–

–

–

ML

2 (2.5)

2 (100, 15.8–100)

–

–

–

–

–

47 (n = 92)

Single

10 (10.9)

2 (20, 2.5–55.6)

3 (30, 6.7–65.2)

–

–

3 (30, 6.7–65.2)

2 (20, 2.5–55.6)

M

77 (83.7)

–

64 (83.1, 73.4–90.1)

2 (2.6, 0.3–9.1)

11 (14.3, 7.5–23.9)

–

–

D

79 (85.9)

78 (98.7, 93.2–99.9)

1 (1.3, 0.03–6.8)

–

–

–

–

MB

5 (5.4)

4 (80, 28.3–99.5)

1 (20, 0.5–71.7)

–

–

–

–

DB

3 (3.3)

3 (100, 29.2–100)

–

–

–

–

–

ML

5 (5.4)

5 (100, 47.8–100)

–

–

–

–

–

DL

3 (3.3)

3 (100, 29.2–100)

–

–

–

–

–

Total (%)

663 (100)

307 (46.3, 42.4–50.3)

271 (40.9, 37.1–44.9)

3 (0.5, 0.1–1.6)

75 (11.3, 9.0–13.9)

5 (0.8, 0.3–2.0)

2 (0.3, 0.03–1.1)

  1. CI confidence interval.
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