Table 3 Variation of root canal after preparation at different insert angles (mean ± SD)
Groups | The variation of root canal after preparation | ||||
|---|---|---|---|---|---|
Working length (mm) | The mean of offset on central axis (mm) | Curvature(°) | preparation time (s) | Success rate (%) | |
Group − 10° | .41 ± .26 | .247 ± .041 | 4.22 ± 1.06 | 59.41 ± 6.33 | 75 |
Group − 5° | .34 ± .17 | .145 ± .042 | 3.86 ± 1.21 | 52.62 ± 7.84 | 85 |
Group 0° | .20 ± .12 | .085 ± .032 | 2.54 ± 0.87 | 54.58 ± 7.15 | 90 |
Group 5° | .17 ± .15 | .073 ± .025 | 2.08 ± 0.93 | 53.89 ± 6.64 | 90 |
Group 10° | .37 ± .36 | .119 ± .035 | 3.59 ± 1.34 | 51.33 ± 8.60 | 80 |
P-value | 0.025 | 0.018 | 0.031 | 0.030 | N/A |