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. 2018 Apr 3;8:5509. doi: 10.1038/s41598-018-23831-3

Figure 4.

Figure 4

Colony-forming units (CFU) of S. mutans biofilms on resins with 0% or 3% DMAHDM (mean ± sd; n = 6). To evaluate drug resistance to DMAHDM, 20 passages were tested, each using the surviving bacteria from the previous passage as inoculum. From 1 to 20 passages, the CFU on the DMAHDM resin was maintained to be 3 log less than that without DMAHDM, indicating no drug resistance. In (a), bars with dissimilar letters are significantly different from each other (p < 0.05). In (b), all values are similar (p > 0.1).