RESULTS
According to ANOVA, the restorative material,
staining agent, and their interaction were found to
play a statistically significant role (P=0.0001) in
color change. The means and standard deviations of
color difference of each resin composite in each staining
solution are given in Table 2, as well as the differences
among groups.
For all the resin composite restorative material
groups, the lowest ΔE
* values were consistently observed
in Group W, followed by Group Co. There
were no significant differences in color difference between
Group T and Group C, and these groups also
demonstrated higher ΔE
* values than Group W and
Group Co. The highest color difference for all the
resin composite restorative materials tested was observed
in Group RW.
In terms of comparison among the five different
restorative materials, no significant differences were
observed between the Filtek P60 and Filtek Z250 material
groups. Moreover, these groups demonstrated
significantly less color change than the nanohybrids
(Grandio and Filtek Supreme)and Quadrant LC(a
universal resin composite)- whereby differences in
color change were not significant among the latter
three material groups.
RESULTSAccording to ANOVA, the restorative material,staining agent, and their interaction were found toplay a statistically significant role (P=0.0001) incolor change. The means and standard deviations ofcolor difference of each resin composite in each stainingsolution are given in Table 2, as well as the differencesamong groups.For all the resin composite restorative materialgroups, the lowest ΔE* values were consistently observedin Group W, followed by Group Co. Therewere no significant differences in color difference betweenGroup T and Group C, and these groups alsodemonstrated higher ΔE* values than Group W andGroup Co. The highest color difference for all theresin composite restorative materials tested was observedin Group RW.In terms of comparison among the five differentrestorative materials, no significant differences wereobserved between the Filtek P60 and Filtek Z250 materialgroups. Moreover, these groups demonstratedsignificantly less color change than the nanohybrids(Grandio and Filtek Supreme)and Quadrant LC(auniversal resin composite)- whereby differences incolor change were not significant among the latterthree material groups.
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