Table 4: Scheffe's post hoc multiple comparison of dye penetration for the tested groups
| Groups | Apacaries gel | Spoon excavator | Er:YAG laser |
| Apacaries gel | 1.000 | 0.877 | 0.041 |
| Spoon excavator | – | 1.000 | 0.123 |
| Er:YAG laser | – | – | 1.000 |
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