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Total operating time of different groups
| Group | Total operating time in minutes |
|---|---|
| Group1 | |
| (G.G+ Hand H-files) | 41.973A |
| Group2 | |
| (D-Race) | 26.3206C |
| Group3 | |
| (D-Race and XP-Endo Finisher) | 33.3173B |
| Group4 | |
| (D-Race and XP -Endo Finisher R) | 32.0977B |
Indicates significant difference, while asymmetrical capital letters indicate significant differences among groups (p<0.05)
