Table 4.
Statistical analysis for mean ± St. Deviation of VRS and VAS and P-value for the effect of bleaching protocol on post-bleaching teeth sensitivity at each period
| Baseline | 1-day post-bleaching | 2-days post-bleaching | 1-week post-bleaching | ||
|---|---|---|---|---|---|
| VRS | High light intensity | 0 | 2.1 ± 0.7 | 0.5 ± 0.5 | 0 |
| Descending light intensities | 0 | 1.3 ± 0.4 | 0.3 ± 0.4 | 0 | |
| P-value | --- | 0.006* | 0.418NS | --- | |
| VAS | High light intensity | 0 | 42.1 ± 7.1 | 10.5 ± 12.4 | 0 |
| Descending light intensities | 0 | 28.3 ± 15.5 | 8.3 ± 12.3 | 0 | |
| P-value | --- | 0.019* | 0.435NS | --- | |
*
: significant (p ≤ 0.05); NS: non-significant (p > 0.05).