Research Article
Effect of Laser and Conventional Office Bleaching and Polishing on the Color Change of Stained Nanohybrid and Microhybrid Composite Resin
Table 4
Mean color change after stain-removal procedures compared with after staining (ΔE2).
| | Composite resin | Method | Mean ± SD | Maximum | Minimum |
| | Clearfil | Polishing | 3.96 ± 2.11 | 7.06 | 1.18 | | Office bleaching | 3.71 ± 0.98 | 5.68 | 2.76 | | Laser bleaching | 3.22 ± 1.87 | 6.5 | 0.92 |
| | Grandio | Polishing | 4.46 ± 2.7 | 8.85 | 1.5 | | Office bleaching | 5.81 ± 2.11 | 9.12 | 3.56 | | Laser bleaching | 6.0 ± 3.31 | 10.99 | 1.79 |
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