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Number and percentages of cases which the contrast medium reaching the apex
| Group (N) | Reach the apex | P -value | |
|---|---|---|---|
| Yes | No | ||
| LAI (20) | 20 (100%) | 0 (0%) | <0.05* |
| PUI (20) | 9 (45%) | 11 (55%) | |
LAI: Laser-activated irrigation; PUI: Passive ultrasonic irrigation
Chi-square test; the significance value was set up at 0.05
