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Histopathological analysis: mean and standard deviation (±SD) of depth of thermal damage (mm) in groups of samples (N.) by power (watt) and time (second) settings.
| Variables | Time: 2 s | Time: 4 s | ||
|---|---|---|---|---|
| N | Mean (±SD) | N | Mean (±SD) | |
| Depth of damage (mm) | ||||
| Power: 30 W | 15 | 1.1432 (±0.0112) | 14 | 1.3221 (±0.0324) |
| Power: 60 W | 13 | 1.0012 (±0.0109) | 16 | 1.4117 (±0.0127) |
| p-value a | 0.4149 | 0.8345 | ||
Wilcoxon rank test, p-value between groups 30 and 60 W.
