Table 3.
Shear bond strength (MPa) ± SD of groups A to E/modes of failure.
| Group code | Cement/bonding | No. of specimens failed | No. of specimens | Mean SBS ± SD | Mode of failure of tested specimens | |||
|---|---|---|---|---|---|---|---|---|
| agent | in water before testing | tested | 1 | 2 | 3 | 4 | ||
| A | Optibond FL | 1 | 13 | 10.03 ± 3.50a,1 | 3 | 1 | 1 | 8 |
| B | One Coat Bond | 1 | 11 | 7.21 ± 2.831 | 7 | 2 | 0 | 2 |
| C | Single Bond | 2 | 11 | 8.24 ± 3.351 | 6 | 2 | 0 | 3 |
| D | Go! | 5 | 8 | 6.94 ± 1.53b,1 | 1 | 0 | 0 | 7 |
| E (control) | RXU | 2 | 11 | 7.17 ± 2.091 | 1 | 2 | 1 | 7 |
|
| ||||||||
| Percentage of failures | 37.04% | 16.67% | 1.85% | 51.85% | ||||
Groups with the same superscript number in the same columns are not significantly different (P > 0.05).
Groups with a different superscript letter in the same column are significantly different (P < 0.05).
Mode failure 1: adhesive failure at the ceramic-cement interface, Mode failure 2: adhesive failure at the bonding surface-cement interface, Mode failure 3: cohesive failure within the cement or Mode failure 4: mixed failure (any combination of the first three modes).