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Table 2 Root canal morphologies of mandibular premolars

From: Frequency of non-single canals in mandibular premolars and correlations with other anatomical variants: an in vivo cone beam computed tomography study

 

Vertucci classification, n (%)

I

II

III

IV

V

VI

VII

VIII

Additional

Others

C-shape

1–1

2–1

1–2-1

2

1–2

2–1-2

1–2–1-2

3

2–3

3–2

  

Mandibular first premolar (n = 971)

 

765 (78.78)

22 (2.27)

31 (3.19)

4 (0.41)

106 (10.92)

0 (0)

1 (0.1)

0 (0)

1 (0.1)

5 (0.51)

 

36 (3.71)

C-shape (n = 36)

5 (13.9)

28 (77.8)

  

3 (8.3)

 

Mandibular second premolar (n = 997)

 

981 (98.4)

14 (1.4)

2 (0.2)