Table 2.
Percentages of failure modes after microtensile test. T0, T6 and T12 indicate specimens that were tested after storage for 24 h, 6 months or 12 months, respectively. Fractures were classified as: A, adhesive; CD, cohesive failure in dentin; CC, cohesive failure in resin composite; M, mixed failure.
| Adhesive system | Adper Scotchbond 1XT | XP Bond | ||||
|---|---|---|---|---|---|---|
| Storage time | T0 | T6 | T12 | T0 | T6 | T12 |
| 0.2% chlorhexidine | 30% A 70% M [5/163] |
30% A 5% CC 65% M [5/154] |
30% A 70% M [6/161] |
40% A 5% CD 55% M [7/158] |
35% A 65% M [6/154] |
30% A 10% CD 60% M [4/159] |
| 2% chlorhexidine | 35% A 10% CD 55% M [8/167] |
35% A 5% CD 60% M [5/162] |
50% A 5% CD 45% M [7/149] |
45% A 55% M [4/163] |
30% A 10% CC 60% M [5/162] |
40% A 15% CD 45% M [7/164] |
| Control group | 35% A 65% M [6/159] |
30% A 10% CC 60% M [9/172] |
35% A 10% CD 55% M [5/167] |
35% A 65% M [6/154] |
35% A 5% CD 60% M [7/165] |
35% A 15% CC 50% M [6/158] |
[number of premature failed sticks/number of intact sticks tested].