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Table 1 Cumulative CHX release for specimens with differing levels of nanoparticle substitution at each of 5 time points

From: Development of a novel antimicrobial-releasing glass ionomer cement functionalized with chlorhexidine hexametaphosphate nanoparticles

  Cumulative CHX release [nmol.mm-2] (standard deviation in parentheses)
NP substitution [%] 1 h 24 h 8 days 15 days 33 days
0 0.01 (0.003)a 0.01 (0.02)a 0.11 (0.06)a 0.12 (0.07)a 0.16 (0.08)a
1 0.16 (0.08)a, b 0.20 (0.09)a, b 0.48 (0.15)a, b 0.56 (0.16)a, b 0.65 (0.17)a, b
2 0.66 (0.18)b 0.70 (0.19)b 1.04 (0.21)b 1.17 (0.22)b 1.30 (0.24)b
5 1.30 (0.24)c 1.39 (0.25)c 2.03 (0.34)c 2.30 (0.36)c 2.51 (0.38)c
10 2.52 (0.38)d 2.65 (0.40)d 3.40 (0.43)d 3.73 (0.44)d 4.01 (0.45)d
20 4.02 (0.48)e 4.20 (0.50)e 5.09 (0.55)e 5.46 (0.59)e 5.94 (0.67)e
  1. Within each time point, superscript letters indicate statistically homogeneous groups, so figures with different superscript letters are statistically significantly different to a 95% confidence level at that time.