Table 4 Minimum, maximum, mean ± standard error, standard deviation and median values of time to remove root canal filling material (seconds)
Group | N | Minimum | Maximum | Mean ± std error | Std Deviation | Median | P value |
|---|---|---|---|---|---|---|---|
ProTaper Universal | 11 | 112.00 | 137.00 | 124.18 ± 2.32 | 7.68 | 123.00c | < 0,05 |
Reciproc R25 | 12 | 102.00 | 116.00 | 108.50 ± 1.20 | 4.15 | 108.00b | |
R-Endo | 12 | 204.00 | 230.00 | 218.42 ± 2.24 | 7.77 | 217.50d | |
XP-Endo Retreat | 12 | 62.00 | 87.00 | 73.33 ± 2.40 | 8.32 | 73.00a | |
Hand file | 11 | 238.00 | 267.00 | 252.82 ± 3.14 | 10.43 | 252.00e |