Table 1A: Comparison of mean surface roughness and standard deviation when composite resins subjected to Sof-Lex polishing system
| Subgroups | N | Mean | S.D. | Std. error | Min value | Max value | |||||||
| IIA | 10 | 0.04303 | 0.005106 | 0.001615 | 0.0321 | 0.0501 | |||||||
| IIB | 10 | 0.06847 | 0.00351 | 0.0011 | 0.0625 | 0.0729 | |||||||
| IIC | 10 | 0.11254 | 0.03039 | 0.009613 | 0.0887 | 0.1889 |