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Table 2 Root canal number of mandibular incisors in different age groups n

From: A micro–computed tomographic analysis of the root canal systems in the permanent mandibular incisors in a Chinese population

Age

N

Central incisors (n = 53)

Lateral incisors (n = 53)

Total incisors (n = 106)

Single

Double

Single

Double

Single

Double

 < 30 yrs

10

3

1

3

3

6

4

30 ~ 60

48

25

4

14

5

39

9

 > 60

48

17

3

20

8

37

11

Total

106

45

8

37

16

82

24

  1. Age group difference has no statistical significance for each tooth type (p = 0.717 and 0.521 for mandibular central and lateral incisors, respectively)
  2. Single: Single canal, Double: Double canals