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. 2019 Mar 2;8(2):81–89. doi: 10.1302/2046-3758.82.BJR-2018-0170.R2

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© 2019 Author(s) et al.

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Fig. 4 — Chart summarizing the compressive modulus values. An asterisk (*) denotes a significant difference from control, p < 0.05. Ten specimens were tested from each group. CON, negative control without any additive; RIF, loaded with 1 g of rifampin; AA, positive control loaded with ascorbic acid; HQ, positive control loaded with hydroquinone.