Table 4: Post hoc analysis (using Bonferroni multiple comparison test)
GROUP (P)
GROUP (Q)
MEAN DIFF(P-Q)
SIG (p VALUE)
Group IA
(Control)
Group IIA
Group IIIA
Group IVA
8.624
5.604
-2.261
.000
.000
.129
Group IIA
(Bleaching w/o antioxidant)
Group IA
Group IIIA
Group IVA
-8.624
-3.02
-10.89
.000
.017
.000
Group IIIA
(Bleaching with Na ascorbate)
Group IA
Group IIA
Group IVA
-5.604
3.02
-7.865
.000
.017
.000
Group IVA (Bleaching with GSE)
Group IA
Group IIA
Group IIIA
2.261
10.89
7.865
.129
.000
.000