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The experimental groups of the study.
| Group | Type of restoration |
|---|---|
| 1 | Filtek Z250 (40 sec light-curing, 55°C, inserted in bulk) |
|
| |
| 2 | Filtek Flow (40 sec light-curing, inserted in bulk) |
|
| |
| 3 | Filtek Flow (0.5 mm layer at the axial wall, 20 sec light-curing) + Filtek Z250 (40 sec light-curing, 23°C) |
|
| |
| 4 | Filtek Flow (0.5 mm layer at the axial wall, no light-curing) + Filtek Z250 (23°C) and co-light-curing for 40 sec |
|
| |
| 5 (control) |
Filtek Z250 (40 sec light-curing, 23°C, inserted in bulk) |
