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. 2018 Jul 19;8:10936. doi: 10.1038/s41598-018-29188-x

Figure 4.

Figure 4

Enamel surface hardness change (∆%SH; median incl. 25 and 75 percentiles) related to baseline after pellicle modification and after 72 h of biofilm formation and intermitted “cleaning”. NOTE: Negative values represent decrease in SH, positive values represent increase in SH. Statistically significant differences between the modification and the control are shown.