Table 1. The mean dye penetration in the study groups (n = 20).
| Cement | N | Mean ± SD (mm) |
| Polycarboxylate | 20 | 1.51±0.35 |
| glass ionomer | 20 | 0.81±0.23 |
| RMGI | 20 | 0.41±0.15 |
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