Figure 1 | Scientific Reports

Figure 1

From: Ex vivo study of molecular changes of stained teeth following hydrogen peroxide and peroxymonosulfate treatments

Figure 1The alternative text for this image may have been generated using AI.

Bleaching methods significantly alter teeth' biochemical profiles. (a) Boxplots of non-normalized whiteness index (WIO) show a significant difference between Control and H2O2/MPS bleaching methods. This is a whiteness index based on human perception studies, − WIO are darker teeth and + WIO are whiter teeth23. Analysis of variance (ANOVA) followed by Tukey’s Honestly Significant Difference (HSD) Test. ***p < 0.05. (b) PCA shows a clear separation between control and bleaching methods according to the Permutational Analysis of Variance (PERMANOVA), R2 = 0.27, p < 0.001. (c) Heatmap of the top 47 features with VIP scores > 1.00 extracted from pairwise PLS-DA models. The asterisks in the scores plots represent group centroids.

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