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(a) Cumulative chlorhexidine release in PBS (pH 7.3) and (b) duration of antimicrobial activity of Cemex® with different concentrations of pure chlorhexidine (0.5, 1, 2, 3, 4, 5% w/w) (mean ± SD, n = 3). (c) Cumulative percentage of chlorhexidine release in PBS (pH 7.3) and (d) duration of antimicrobial activity of Cemex with 3% w/w chlorhexidine either as pure powder or in coated NPs (mean ± SE, n = 6).
