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Table 3 Comparison of irrigation efficiency between real curved canal and modified curved canal

From: Influence of needle working length and root canal curvature on irrigation: a computational fluid dynamics analysis based on a real tooth

Curved root canal

Depth of effective velocity* (mm)

Effective shear stress#

Clean span (mm)

Clean depth (mm)

Real 23.4°

9.50

4.96

9.04

Modified 20°

9.31

3.17

8.77

Modified 30°

9.30

3.92

8.86

  1. Real 23.4°: Real canal with a curvature of 23.4°; Modified 20°: Modified canal with a curvature of 20°; Modified 30°: Modified canal with a curvature of 30°
  2. *Effective velocity: > 0.1 m/s
  3. #Effective shear stress: ≥ 100 Pa
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BMC Oral Health

ISSN: 1472-6831

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