Table 1 Remnant depth and width of scratches on the enamel before and after irradiation under different loads in relation to prism orientation
From: Effect of gamma irradiation on the wear behaviour of human tooth enamel
| Â | The perpendicular-sectioned enamel slides | The parallel-sectioned enamel slides | ||||
|---|---|---|---|---|---|---|
|  | Before irradiation (n = 6) | After irradiation (n = 6) | P value | Before irradiation (n = 6) | After irradiation (n = 6) | P value |
Depth (nm) 20 mN | 25 ± 3 | 29 ± 6 | 0.34 | 43 ± 18 | 52 ± 16 | 0.45 |
40 Mn | 79 ± 8 | 101 ± 13 | 0.03 | 91 ± 22 | 154 ± 19 | 0.005 |
60 mN | 181 ± 10 | 223 ± 10 | 0.0009 | 247 ± 74 | 381 ± 30 | 0.02 |
Width (um) 20 mN | 2.8 ± 0.3 | 2.9 ± 0.2 | 0.55 | 3.7 ± 0.4 | 4.0 ± 0.7 | 0.36 |
40 mN | 3.5 ± 0.3 | 3.8 ± 0.2 | 0.16 | 4.1 ± 0.5 | 4.4 ± 0.3 | 0.27 |
60 mN | 4.7 ± 0.5 | 5.0 ± 0.3 | 0.12 | 4.9 ± 1.4 | 5.3 ± 0.7 | 0.56 |
