26 May 2026 : Laboratory Research
Comparative Evaluation of Polymeric and Metal Ultrasonic Tips for the Removal of Calcium Hydroxide From Root Canals
Ahmet AkayDOI: 10.12659/MSM.952774
Med Sci Monit 2026; 32:e952774
Table 2 Comparison of amount of observed residual Ca(OH)2 in artificial grooves.
| Level | Group | Score 0 (none) | Score 1 (<50%) | Score 2 (>50%) | Score 3 (full) | P value |
|---|---|---|---|---|---|---|
| 0 (0%)a | 5 (25%)a | 9 (45%)a | 6 (30%)a | 0.007* | ||
| 3 (15%)a | 11 (55%)a | 6 (30%)a | 0 (0%)b | |||
| 3 (15%)a | 9 (45%)a | 8 (40%)a | 0 (0%)b | |||
| 0 (0%) | 5 (25%)a | 10 (50%)a | 5 (25%)a | 0.007* | ||
| 0 (0%) | 13 (65%)b | 7 (35%)a | 0 (0%)b | |||
| 0 (0%) | 11 (55%)ab | 9 (45%)a | 0 (0%)b | |||
| * Pearson’s Chi-Square test; CNI – conventional needle irrigation; MUA – metal ultrasonic activation; PUA – polymer ultrasonic activation. Groups sharing the same letter do not differ significantly at the .05 level. | ||||||






