Research Article
Impact of Bleaching before or after Veneer Preparation on Color Masking Ability of Laminate Veneers: An In Vitro Study
Table 2
ANOVA test showing the significance among the tested groups.
| | Sum of squares | df | Mean square | | Sig. |
| | Between groups | 562.199 | 5 | 112.440 | 10.025 | 0.0001 | Within groups | 605.640 | 54 | 11.216 | | | Total | 1167.839 | 59 | | | |
| | Between groups | 10.163 | 5 | 2.033 | 1.861 | 0.116 | Within groups | 58.967 | 54 | 1.092 | | | Total | 69.130 | 59 | | | |
| | Between groups | 108.406 | 5 | 21.681 | 1.289 | 0.282 | Within groups | 908.323 | 54 | 16.821 | | | Total | 1016.729 | 59 | | | |
| | Between groups | 198.698 | 5 | 39.740 | 3.880 | 0.004 | Within groups | 553.084 | 54 | 10.242 | | | Total | 751.782 | 59 | | | |
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