Diagnostic aids | Direction of cracks | Total | x2 | p value | ||
| Mesiodistal n = 161 n (%) | Buccolingual n = 99 n (%) | Combination n = 4 n (%) |
|
|
|
Naked eye | 6 (3.7) | 82 (82.8) | 4 (100) | 88 | 200.997 | <0.001 |
Transillumination | 105 (65.2) | 13 (13.1) | 0 (0.0) | 118 | 70.565 | <0.001 |
Dye | 20 (12.4) | 6 (6.1) | 0 (0.0) | 26 | 3.238 | 0.198 |
Magnification | 30 (18.6) | 2 (2.0) | 0 (0.0) | 32 | 20.602 | <0.001 |