Journal of Oral Medicine and Pain

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Fig. 4.

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Fig. 4. Comparisons of mean concentrations of IL-8 and MMP-9 according to pain intensity. The IL-8 and MMP-9 levels were more than two-fold higher in the mild pain group (NRS 1–4) than in the control group (NRS 0) and tended to decrease from the moderate pain group (NRS 5–6) to the severe pain group (NRS 7–10) (p<0.05). The Kruskal-Wallis test was performed to compare the concentrations of IL-8 and MMP-9 between groups. IL-8, interleukin-8; MMP-9, matrix metalloprotease 9; NRS, numerical rating scale.
Journal of Oral Medicine and Pain 2019;44:160-8 https://doi.org/10.14476/jomp.2019.44.4.160
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