Table 4. Fracture analysis, means and (standard deviations).
| Fracture pattern in percent of bonded surface | ||||||||||
| 24 h storage at 37°C | 500 thermocycles +5/+55°C | |||||||||
| Adhesive | Cohesive resin | Cohesive tooth | Cohesive total | Adhesive | Cohesive resin | Cohesive tooth | Cohesive total | |||
| Clearfil | Enamel | Human | 24 (30) | 14 (22) a | 62 (29) a | 76 (30) | 12 (25) | 12 (14) | 77 (24) | 89 (25) |
| SE Bond | Bovine | 19 (31) | 28 (15) a | 54 (27) | 82 (31) | 29 (44) | 17 (24) | 57 (40) | 74 (43) | |
| Dentin | Human | 16 (19) | 28 (24) | 57 (30 ) b | 85 (19) | 0 (0) | 21 (29 ) | 80 (29) | 100 (0) | |
| Bovine | 22 (36) | 18 (16) | 60 (36) | 78 (36) | 10 (16) | 26 (19) | 65 (31) | 91 (16) | ||
| Optibond | Enamel | Human | 0 (0) | 7 (8) | 93 (8) a | 100 (0) | 6 (19) | 12 (18) | 82 (23) | 94 (19) |
| FL | Bovine | 13 (22) | 12 (13) | 75 (26) | 87 (22) | 2 (6) | 24 (24) | 75 (25) | 98 (6) | |
| Dentin | Human | 0 (0) | 13 (12) b | 87 (12) bc | 100 (0) | 10 (32) | 12 (22) | 78 (35) | 90 (32) | |
| Bovine | 18 (25) | 36 (23)b | 46 (30)c | 82 (25) | 34 (36) | 9 (13) | 57 (36) | 66 (36) | ||
Significant differences (a) between human and bovine enamel or dentin, respectively, are indicated by the same superscript letter, (b) prior to and after TC are underlined, and (c) between cohesive failures in the resin and the tooth are in italic (p<0.05).