Table 2 Effect of root canal curvature on irrigation efficiency in modified root canals with a 30-G flat needle at 4.75 mm needle working length
Root canal curvature (mm) | Depth of effective velocity* (mm) | Effective shear stress# | |
|---|---|---|---|
Clean span (mm) | Clean depth (mm) | ||
0° | 8.62 | 2.06 | 8.37 |
5° | 8.58 | 1.94 | 8.35 |
10° | 8.83 | 2.79 | 8.40 |
20° | 9.31 | 3.17 | 8.77 |
30° | 9.30 | 3.92 | 8.86 |