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Table 3 Root canal configuration of mandibular incisors (Vertucci’s classification) n (%)

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

Type of root canal configuration

Central incisors

Lateral incisors

Total incisors

Type I (1–1)

45 (84.9%)

37 (69.8%)

82 (77.4%)

Type II (2–1)

1 (1.9%)

0 (0.0%)

1 (0.9%)

Type III (1–2-1)

6 (11.3%)

14 (26.4%)

20 (18.9%)

Type V (1–2)

1 (1.9%)

2 (3.8%)

3 (2.8%)

Total

53 (100.0%)

53 (100.0%)

106 (100.0%)