Table 1. Mean ± standard deviations (SD) of shear bond strength values (MPa) and frequency (%) of fracture patterns in the study groups.
| Adhesive strategy | Surface contaminations | Shear bond strength (MPa) | Fracture patterns (%) | ||
| Mean ± SD | Adhesive | Cohesive | Mixed | ||
| Etch-and-Rinse | Control | 29.58 ± 3.81A | 0 (0%) | 4 (33.33%) | 8 (66.66%) |
| Blood | 13.74 ± 3.60BC | 4 (33.33%) | 0 (0%) | 8 (66.66%) | |
| Saliva | 15.07 ± 5.47BC | 5 (41.6%) | 0 (0%) | 7 (58.4%) | |
| Aluminium Cl | 20.47 ± 5.36BD | 5 (41.6%) | 0 (0%) | 7 (58.4%) | |
| Ferric Sulfate | 18.00 ± 3.66B | 4 (33.33%) | 0 (0%) | 8 (66.66%) | |
| Disclosing Agent | 25.08 ± 3.60AD | 4 (33.33%) | 4 (33.33%) | 4 (33.33%) | |
| Self-etch | Control | 28.59 ± 2.27A | 0 (0%) | 3 (25%) | 9 (75%) |
| Blood | 12.32 ± 2.73B | 5 (41.6%) | 0 (0%) | 7 (58.4%) | |
| Saliva | 11.53 ± 4.00B | 3 (25%) | 0 (0%) | 9 (75%) | |
| Aluminium Cl | 17.74 ± 4.14B | 7 (58.4%) | 0 (0%) | 5 (41.6%) | |
| Ferric Sulfate | 13.71 ± 4.17B | 5 (41.6%) | 0 (0%) | 7 (58.4%) | |
| Disclosing Agent | 24.82 ± 4.59A | 4 (33.33%) | 4 (33.33%) | 4 (33.33%) | |
Different superscripts represent statistically significant differences (P < 0.05).