Table 2.
Comparison of the microtensile bond strength of every group with the control group. (PC: carbamide peroxide; SA: sodium ascorbate; PH: hydrogen peroxide).
| Groups | Bleaching Treatments | Difference of Means | p-Value | 95% Confidence Interval | |
|---|---|---|---|---|---|
| Lower | Upper | ||||
| Control | 5% PC without SA | 3.5600 | 0.006 | 1.0668 | 6.0532 |
| 5% PC with SA | −1.3675 | 0.277 | −3.8607 | 1.1257 | |
| 10% PC without SA | 11.4800 | 0.000 | 8.9868 | 13.9732 | |
| 10% PC with SA | 2.1050 | 0.097 | −0.3882 | 4.5982 | |
| 16% PC without SA | 17.0513 | 0.000 | 14.5580 | 19.5445 | |
| 16% PC with SA | 3.5700 | 0.006 | 1.0768 | 6.0632 | |
| 6% PH without SA | 9.6013 | 0.000 | 7.1080 | 12.0945 | |
| 6% PH with SA | 3.3288 | 0.010 | 0.8355 | 5.8220 | |