Skip to main content
. 2012 Mar-Apr;20(2):200–205. doi: 10.1590/S1678-77572012000200013

Table 3.

Means (standard deviations) for Knoop microhardness (%) values (2-way ANOVA, Bonferroni's test; p<0.05)

  Z250 Z350
Control 7.30 (0.17)a,A 22.28 (0.18)a,A
Listerine -14.88 (0.10)a,A 1.20 (0.27)a,A
Plax Classic -6.98 (0.08)a,A 15.83 (0.40)a,A
Plax alcohol-free -5.03 (0.23)a,A -25.73 (0.19)a,B
Periogard -0.24 (0.18)a,A 14.80 (0.24)a,A

Different lowercase letters in lines and uppercase letters in columns indicate statistically significant difference.