Table 2 Comparison of fracture modes for various groups
Group | A, resin cohesive fracture | B, dentin cohesive fracture | C, interface fracture | D, mixed fracture | Total |
|---|---|---|---|---|---|
Various energy levels | |||||
Control | 1 | 0 | 6 | 1 | 8 |
Acid | 0 | 0 | 7 | 1 | 8 |
50Â mJ | 1 | 1 | 6 | 0 | 8 |
100Â mJ | 1 | 1 | 5 | 1 | 8 |
150Â mJ | 0 | 0 | 7 | 1 | 8 |
200Â mJ | 0 | 1 | 7 | 0 | 8 |
250Â mJ | 1 | 0 | 5 | 2 | 8 |
300Â mJ | 1 | 0 | 6 | 1 | 8 |
Total | 5 (7.81%) | 3 (4.69%) | 49 (76.56%) | 7 (10.94%) | 64 |
Various frequency levels | |||||
Control | 1 | 0 | 6 | 1 | 8 |
Acid | 1 | 0 | 7 | 0 | 8 |
5Â Hz | 0 | 0 | 8 | 0 | 8 |
10Â Hz | 0 | 0 | 8 | 0 | 8 |
15Â Hz | 1 | 1 | 5 | 1 | 8 |
20Â Hz | 1 | 0 | 6 | 1 | 8 |
25Â Hz | 1 | 1 | 5 | 1 | 8 |
30Â Hz | 1 | 1 | 5 | 1 | 8 |
Total | 6 (9.38%) | 3 (4.68%) | 50 (78.13%) | 5 (7.81%) | 64 |